Page 1 Toshiba Personal Computer Satellite M20 Maintenance Manual TOSHIBA CORPORATION S/ No. Satellite M20 Maintenance Manual...
Page 2 The information presented in this manual has been reviewed and validated for accuracy. The included set of instructions and descriptions are accurate for the Satellite M20 at the time of this manual's production. However, succeeding computers and manuals are subject to change without notice.
Page 3: General
Preface This maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Satellite M20, referred to as Satellite M20 in this manual. The procedures described in this manual are intended to help service technicians isolate faulty Field Replaceable Units (FRUs) and replace them in the field.
Page 4 The manual is divided into the following parts: Chapter 1 Hardware Overview describes the Satellite M20 system unit and each FRU. Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve FRU problems. Chapter 3 Test and Diagnostics describes how to perform test and diagnostic operations for maintenance service.
Page 5 Text that you are instructed to type in is shown in the boldface type below: DISKCOPY A: B: The display Text generated by the XXXXX that appears on its display is presented in the type face below: Format complete System transferred Satellite M20 Maintenance Manual...
Page 6: Table Of Contents
System Board ....................... 2-10 2.5-inch HDD ....................... 2-20 Keyboard ......................2-25 Display ......................... 2-27 DVD-ROM Drive....................2-29 CD-ROM Drive....................2-31 2.10 LAN........................2-33 2.11 Cooling Module....................2-34 Chapter 3 Diagnostic Programs General ........................3-1 Quick Start......................3-3 Option........................3-9 Satellite M20 Maintenance Manual...
Page 7 Subtests......................... 3-18 System Test ......................3-22 Memory Test ......................3-29 Storage........................3-34 Video ........................3-39 Communication (COMM)..................3-47 3.10 Peripherl ....................... 3-54 3.11 Audio ........................3-58 3.12 Mode Error Codes and description............... 3-59 Satellite M20 Maintenance Manual...
Page 8 Bluetooth Card ..................... 4-44 4.12 Top Cover with the Display Assembly ..............4-46 4.13 I/O Board......................4-50 4.14 System Board ....................... 4-51 4.15 Display Mask......................4-53 4.16 Inverter Board ...................... 4-55 4.17 LCD Module ......................4-57 viii Satellite M20 Maintenance Manual...
Page 9 Board Layout ....................B-1 Appendix C Pin Assignments.................... C-1 Appendix D Keyboard Scan/Character Codes ..............D-1 Appendix E Key Layout.....................E-1 Appendix F Wiring Diagrams.................... F-1 Appendix G BIOS Rewrite Procedures ................G-1 Appendix H EC/KBC Rewrite Procedures................ H-1 Satellite M20 Maintenance Manual...
Page 10 Satellite M20 Maintenance Manual...
Page 11 Chapter 1 Hardware Overview...
Page 12 1 Hardware Overview 1-ii Satellite M20 Maintenance Manual...
Page 13 CD-ROM Drive ....................... 1-14 CD-R/RW Drive ...................... 1-15 CD-RW/DVD-ROM Drive ..................1-16 DVD-Multi Drive..................... 1-17 Power Supply ......................1-18 1.10 Batteries ........................1-19 1.10.1 Main Battery..................1-19 1.10.2 Battery Charging Control ..............1-19 1.10.3 RTC Battery ..................1-20 Satellite M20 Maintenance Manual 1-iii...
Page 14 Table 1-4 CD-R/RW drive specifications................1-15 Table 1-5 CD-RW/DVD-ROM drive specifications ............1-16 Table 1-6 DVD-Multi drive specifications................1-17 Table 1-7 Battery specifications ..................1-19 Table 1-8 Quick/normal charging time................1-19 Table 1-9 RTC battery charging/data preservation time ............ 1-20 1-iv Satellite M20 Maintenance Manual...
Page 15: Features
1 Hardware Overview Features The Toshiba Satellite M20 is a lightweight notebook PC based on the Mobile Banias processor, providing high-speed processing capabilities and advanced features. The computer employs a Lithium Ion battery that allows it to be battery-operated for a longer period of time.
Page 16 The keyboard has 86 keys confirming to the UK key layout. The keyboard has 86 keys confirming to the Korea key layout. Batteries The computer has a removable Lithium Ion battery pack and an internal RTC battery. Satellite M20 Maintenance Manual...
Page 17 Type III (10.5 mm) card, capable of using a variety of PC Cards including 16-bit Multiple Function PC Cards and CardBus cards. Toshiba Pointing Device Toshiba Pointing Device is AccuPoint. Fast Serial InfraRed (FIR) communications port An IrDA 1.1 compatible FIR port is provided, enabling wireless communication at a high speed of 1.15 or 4 Mbps.
Page 18 ITU-TV.92. The transfer rates are 56 Kbps for data reception, 33.6 Kbps for data transmission, and 14,400 bps for fax transmission. Note, however, that the actual speed depends on the line quality. The RJ11 modem jack is used to accommodate a telephone line. Satellite M20 Maintenance Manual...
Page 19: Figure 1-1 Front Of The Computer
Expansion Head Memory PC Card Speaker Phone Slot Right Cooling Ext. Module AC Adapter LCD/FL Inverter Docking System Board Conn Keyboard Serial Battery Parallel PS/2 Mouse Selectable Main /Keyboard Battery Wireless Figure 1-2 System unit configuration Satellite M20 Maintenance Manual...
Page 20: Figure 1-3 System Unit Block Diagram
Bridge 2nd BATTERY Internal LPC DR/RCV Serial (MAX3243) (1/2) EC/KBC Flash (2/2) Super I/O (LPC 47N253) (LPC47N253) Parallel Stick Point K/B PS/2 Main Battery KPA AC E2PROM 1269A PS/2 PS/2 Figure 1-3 System unit block diagram Satellite M20 Maintenance Manual...
Page 21 − 512 MB (32M x 16 x 8P) − 1024 MB (32M x 16 x 16P) − 1024 MB (64M x 16 x 8P) • 2.5 volt operation • No parity bit • 64-bit data transfer Satellite M20 Maintenance Manual...
Page 22 − PCI IDE controller − Support for ATA-66 (GB) and ATA-100 (30/40/60 GB) − USB interface − SMBus interface − Super I/O interface − Power management control − Suspend/resume control − ACPI support PC Card controller • Ti1520 Satellite M20 Maintenance Manual...
Page 23 A single LPC 47N253 chip is used to serve as KBC/ EC.and Super IO. • KBC − Scan controller function − Interface controller function − Controlling the switching between the AccuPoint and external PS/2 mouse or between the built-in keyboard and external PS/2 keyboard or their simultaneous operation Satellite M20 Maintenance Manual...
Page 24 − Digital signal conductor protection − Ring wake-up support − Communication codes supported: For data communication: V.90 (56K bps) data communication control V.32 bis (14.4K, 12K, 9600) V.22 bis (2400, 1200) V.22 (1200) V.23 (1200, 600, 75) V.21 (300) 1-10 Satellite M20 Maintenance Manual...
Page 25 − IEEE802.11b : max11Mbits/s − IEEE802.11a : max54Mbits/s • Frequency Channel − IEEE802.11b : 2.4GHz − IEEE802.11a : 5.0GHz − Super I/O • LPC 47N253 − Serial port control − Parallel port control − Infrared communications control Satellite M20 Maintenance Manual 1-11...
Page 26: Figure 1-4 2.5-Inch Hdd
MK3021 DK23EB- DK23EA- MK4019 Formatted 60.0116GB 60.0116GB 60.0116GB 30.0058GB 40.0007GB 30.0058GB 40.0007GB capacity (GB) User data 117,210,24 117,210,24 117,210,24 58,605,120 78,140,160 58,605,120 78,140,160 sectors Bytes/sector Rotational 4200rpm 5400rpm 5400rpm 4200rpm 5400rpm 4200rpm 5400rpm speed (RPM) 1-12 Satellite M20 Maintenance Manual...
Page 27: Table 1-2 Dvd-Rom Drive Specifications
Rotational speed (RPM) 4,670 Max 5,100Max Data buffer size (Kbytes) Formats supported DVD-ROM, DVD-R (Read) CD-DA, CD+(E)G, CD-MIDI, CD-TEXT CD-ROM, CD-ROM XA, CD-I CD-I Bridge (Photo-CD, Video-CD) Multisession CD (Photo-CD, CD-EXTRA, CD-R, CD-RW) CD-R (Read), CD-RW (Read) Satellite M20 Maintenance Manual 1-13...
Page 28: Table 1-3 Cd-Rom Drive Specifications
Average full stroke access 240 (Typ.) Rotational speed (RPM) 5,136 Data buffer size (Kbytes) Formats supported CD-DA, CD-ROM, CD-R, CD-ROM XA, CD-I FMV, Photo CD (Multisession) , VIDEO CD, CD Extra (CD Plus), CD-G, CD-RW 1-14 Satellite M20 Maintenance Manual...
Page 29: Table 1-4 Cd-R/Rw Drive Specifications
110 (max 24, Typ.) Speed Read: CD-ROM, CD-R (max 24) CD-RW (max 24) Write: CD-R (max 8) CD-RW (max 8) Cache (Mbytes) Formats supported Video CD, Photo CD, CD-ROM, CD-ROM XA, CD-EXTRA, CD-R, CD-Rewritable, CD-DA, CD-Text Satellite M20 Maintenance Manual 1-15...
Page 30: Table 1-5 Cd-Rw/Dvd-Rom Drive Specifications
CD-I, CD-I Bridge CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, (Photo-CD, Video- CD-ROM, CD-ROM XA, MIXED MODE CD), Multisession CD, CD-I, CD-I Bridge (Photo-CD, CD (Photo-CD, Video-CD), Multisession CD (Photo-CD, CD-EXTRA, CD-EXTRA, Portfolio, CD-R, CD-RW), Portfolio) CD-R, CD-RW 1-16 Satellite M20 Maintenance Manual...
Page 31: Table 1-6 Dvd-Multi Drive Specifications
Ultra DMA Mode 2(33.3MB/sec) Average seek time DVD-ROM: 170ms CD-ROM: 130ms DVD-S: 130ms DVD-R/DVD-RW: 150ms Data buffer size (Mbytes) Formats supported DVD-RAM, DVD-R, DVD-RW, DVD-ROM, DVD-Video, CD-R, CD-RW, CD-DA, CD-ROM/XA, CD-ROM, Video-CD, CD-I, Photo CD, CD-Extra, CD-TEXT Satellite M20 Maintenance Manual 1-17...
Page 32: Power Supply
• Monitors the voltage output to the system block (load/logic circuit side). • Monitors the voltage, overvoltage, input/output current of the battery pack. • Monitors the internal temperature of the battery pack. • Monitors the supply voltage from the AC adapter. 1-18 Satellite M20 Maintenance Manual...
Page 33: Table 1-7 Battery Specifications
When the AC adapter is attached, the battery is charged by off-state charge when the system is powered off or by on-state charge when it is powered on. Table 1-8 Quick/normal charging time Charge time Off-state charge About 3 hours On-state charge About 5 hours Satellite M20 Maintenance Manual 1-19...
Page 34: Table 1-9 Rtc Battery Charging/Data Preservation Time
Table 1-8 lists the charging time and data preservation period of the RTC battery. Table 1-9 RTC battery charging/data preservation time Status Time Charging AC Adapter or main battery pack used About 8 hours time (power on) 1-20 Satellite M20 Maintenance Manual...
Page 35 2 Troubleshooting Chapter 2 Troubleshooting Satellite M20 Maintenance Manual...
Page 36 Procedure 2 Test Program Check ..............2-25 Procedure 3 Connector Check and Replacement Check......... 2-25 DVD-ROM Drive ....................2-27 Procedure 1 DVD-ROM Cleaning Check............2-27 Procedure 2 Test Program Check ..............2-27 Procedure 3 Connector Check and Replacement Check......... 2-27 2-ii Satellite M20 Maintenance Manual...
Page 37 Procedure 1 Test Program Check ..............2-31 Procedure 2 Connector Check and Replacement Check......... 2-31 2.11 Cooling Module ....................... 2-32 Procedure 1 Test Program Check ..............2-32 Procedure 2 Connector Check and Replacement Check......... 2-32 Satellite M20 Maintenance Manual 2-iii...
Page 38 Printer port LED board ................2-12 Tables Table 2-1 Printer port LED boot mode status (1/3)............2-14 Table 2-2 Printer port LED resume mode status (1/7) ..........2-17 Table 2-3 HDD error code and status................2-21 2-iv Satellite M20 Maintenance Manual...
Page 39: Outline
12. External PS/2 mouse 13. Multimedia sound system with line-in and line-out ports 14. Headphone 15. Microphone 16. External FDD attachment 17. A-BEX TEST CD-ROM TCDR-702 18. Music CD 19. DVD-ROM TSD-1 (TOSHIBA EMI DVD Test Media) Satellite M20 Maintenance Manual...
Page 40: Basic Flowchart
The basic flowchart in Figure 2-1 serves as a guide for identifying a possibly faulty FRU. Before going through the diagnostic flowchart steps, verify the following: Make sure the Toshiba version of Windows® XP has been installed on the HDD. Any other operating system can cause the computer to malfunction.
Page 41 Message "In Touch with Procedure in Section 2.8 Tomorrow Toshiba" displayed See the previous page to "Password=" displayed ?? delete the password. Follow the HDD diagnostic OS started ?? Procedure in Section 2.6 Figure 2-1 Basic flowchart (1/2) Satellite M20 Maintenance Manual...
Page 42 Perform the continuous test to check if the error is intermittent. Identify the test resulting in the Any error detected by the error and perform the appropriate diagnostic program ?? diagnostic procedures The system is normal. Figure 2-1 Basic flowchart (2/2) Satellite M20 Maintenance Manual...
Page 43 7. If an error is detected by the LAN test, follow the LAN troubleshooting procedures in section 2.12. 8. If an error is detected by the Fan On/Off test, follow the cooling module troubleshooting procedures in Section 2.13. Satellite M20 Maintenance Manual...
Page 44: Power Supply
Battery LED Battery LED Power supply status On in orange Battery being charged On in green Battery fully charged, with AC adapter connected Blinking in orange Battery low *1 while driving the computer (at equal intervals) Else Satellite M20 Maintenance Manual...
Page 45 Make sure the DC IN LED goes on in green. If it does not, go to Procedure 2. Check 2 Make sure the Battery LED goes on in orange or green. If it does not, go to Procedure 3. Satellite M20 Maintenance Manual...
Page 46: Procedure 2 Connection Check
• If the battery LED does not go on, perform Check 3. Check 3 Make sure the battery pack has been correctly installed in the computer. If the battery LED does not go on while the battery pack has been installed correctly, go to Procedure 3. Satellite M20 Maintenance Manual...
Page 47: Procedure 3 Replacement Check
Check 2. Check 2 Replace the system board with a new one. If the battery pack is still not working properly, perform Check 3. Check 3 Replace the CPU with a new one. Satellite M20 Maintenance Manual...
Page 48: System Board
Procedure 1 Message Check Procedure 2 Printer Port LED Check (in Boot Mode) Procedure 3 Printer Port LED Check (in Resume Mode) Procedure 4 Test Program Check Procedure 5 Replacement Check 2-10 Satellite M20 Maintenance Manual...
Page 49 If an error message appears on the display, perform Check 1. If there is no error message, go to Procedure 2. If there is no error beep code tone out, go to Procedure 4 If Toshiba MS-DOS or Toshiba Windows 2000/XP is loaded normally, go to Procedure 5. Check 1 If the following error message is displayed on the screen, press the F1 key as prompted.
Page 50 Figure 2-2 shows the printer port LED. Figure 2-2 Printer port LED Figure 2-3 illustrates how the printer port LED shows a status value. Printer port LED status = 35H Figure 2-3 Printer port LED board 2-12 Satellite M20 Maintenance Manual...
Page 51 NOTE: The printer port LED displays each status upon completion of the corresponding POST test item. If the POST terminates with 21h displayed on the printer port LED, for example, the POST has completed KBC initialization and detected an error Satellite M20 Maintenance Manual 2-13...
Page 52 1C H DEBUG_VIDEO_EQUIP_INIT Initialize Video (6845 Regs),set display mode 1D H DEBUG_VIDEO_COLOR_INIT Initialize Color Adapter,and setup display reg. DEBUG_VIDEO_BW_INIT Initialize Monochrome Adapter,and setup display reg. DEBUG_HWIO_TEST_DMA_PAG Send out some value,to test 8237A Page Registers 2-14 Satellite M20 Maintenance Manual...
Page 53 Install and initialize the hardware vectors 3D H DEBUG_MOUSE_INIT Clear keyboard buffer for search and Init the Mouse DEBUG_KEYB_SET_LEDS_1 Send keyboard command to Update keyboard NUMLOCK status DEBUG_OEM_DEVICE_CONFIG special init of COMM and LPT ports Satellite M20 Maintenance Manual 2-15...
Page 54 DEBUG_BEGIN_BOOT_CODE Into Int19, to boot from floppy or other boot device DEBUG_ACPI_INIT Initialize the ACPI function DEBUG_PM_CPU_INIT Power manager initial & GEYSERVILLE CPU initialize DEBUG_USB_HC_INIT Clear USB status register and Initiallize the USB Hub controllor 2-16 Satellite M20 Maintenance Manual...
Page 55: Procedure 3 Printer Port Led Check (In Resume Mode)
Jump to the reset point DIAG_CRISIS_BOOT Proceed with Crisis Boot,first initial superio and boot device DIAG_FATAL_ERROR Fatal Error,like the RAM error or ROM error C C H DIAG_CRISIS_BEGIN Start process the Crisis recovery procedure DIAG_RESUME_RAM_ERROR Resume SMRAM not Found Satellite M20 Maintenance Manual 2-17...
Page 56: Procedure 4 Test Program Check
Procedure 5 Replacement Check The system board, memory, or CPU may be defective. Disassemble the computer following the steps described in Chapter 4 and replace the system board, memory module or CPU with a new one. 2-18 Satellite M20 Maintenance Manual...
Page 57: Inch Hdd
If the problem persists, go to Procedure 2. Procedure 2 Partition Check Enter the Toshiba MS-DOS system. Perform the following checks: Check 1 Type C: and press the Enter key. If you cannot change to drive C, perform Check 2.
Page 58: Inch Hdd
Abort, Retry, Fail? Check 5 Use the SYS command in the Toshiba MS-DOS system to install system files. If the following message appears on the display, the system files have been transferred to the HDD. Restart the computer. If the problem persists, go to Procedure 3.
Page 59: Procedure 4 Test Program Check
Disk Controller Self Test Failed Disk Controller Test unexpected interrupt Failed Disk Controller action Test Failed disk dos not support SMART disk read attribute threshold error disk read attribute value error disk SMART attribute value error Satellite M20 Maintenance Manual 2-21...
Page 60: Procedure 5 Connector Check And Replacement Check
The System board may be damaged. Replace it with a new one following the disassembling instructions in Chapter 4. If the problem persists, perform Check 4. Check 4 The CPU may be damaged. Replace it with a new one following the disassembling instructions in Chapter 4. 2-22 Satellite M20 Maintenance Manual...
Page 61: Keyboard
If the cable is loose or off, reconnect it firmly and return to Procedure 2. If there is still an error, perform Check 2. Check 2 The keyboard may be faulty. Replace it with a new one following the instructions in Chapter 4. If the problem persists, perform Check 3. Satellite M20 Maintenance Manual 2-23...
Page 62 Chapter 4. If the problem persist, perform Check 5. Check 5 The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one. 2-24 Satellite M20 Maintenance Manual...
Page 63: Display
3. If there is still an error, perform Check 2. Check 2 The LCD/FL cable may be faulty. Replace it with a new one and return to Procedure 3. If there is still an error, perform Check 3. Satellite M20 Maintenance Manual 2-25...
Page 64 The CPU may be faulty. Replace it with a new one following the instructions in Chapter 4. Check 10 The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform Check 10. 2-26 Satellite M20 Maintenance Manual...
Page 65: Dvd-Rom Drive
Insert the diagnostics CD in the computer's CD-ROM, turn on the computer and run the test. Then insert a test DVD (Toshiba-EMI DVD-ROM TEST DISK TSD-1) into the DVD-ROM drive. See Chapter 3 for information on how to perform the test.
Page 66 Chapter 4. If the problem persist, perform Check 6. Check 6 The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform Check 3. 2-28 Satellite M20 Maintenance Manual...
Page 67: Cd-Rom Drive
Check 2. Check 2 The connector may be faulty. Replace the connector with a new one following the steps in Chapter 4. If the CD-ROM drive is still not functioning properly, perform Check 3. Satellite M20 Maintenance Manual 2-29...
Page 68: Cd-Rom Drive
Chapter 4. If the problem persist, perform Check 6. Check 6 The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one. 2-30 Satellite M20 Maintenance Manual...
Page 69: Lan
Chapter 4. If the problem persist, perform Check 3. Check 3 The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one. Satellite M20 Maintenance Manual 2-31...
Page 70: Cooling Module
The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform Check 5. Check 4 The CPU may be faulty. Replace it with a new one following the steps in Chapter 4. 2-32 Satellite M20 Maintenance Manual...
Page 71 2.14 Cooling Module 2 Troubleshooting Check 5 The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one. Satellite M20 Maintenance Manual 2-33...
Page 72 Chapter 3 Diagnostic Programs...
Page 73 Display LOG File .................. 20 3.3.9 LOG Viewer ..................21 3.3.10 LOG File Sample................... 22 Subtests ........................24 System Test......................... 28 Memory Test....................... 32 Storage ........................36 Video........................... 40 Communication (COMM) ..................48 3.10 Peripheral ........................54 Satellite M20 Maintenance Manual...
Page 74 3 Diagnostic Programs 3.11 Error Codes and description..................57 3.12 Quick Test Item List ...................... i Satellite M20 Maintenance Manual...
Page 76: General
A LPT Loop back Connector (for LPT port Loop back test) A standard LPT printer (for LPT Printer test) A Test Media CD (A-BEX TEST CD-ROM TCDR-702)(for CD-ROM test) A Test Media DVD (Toshiba-EMI DVD-ROM TEST DISK TSD-1) An External Monitor (for DISPLAY test) Satellite M20 Maintenance Manual...
Page 77 If a USB floppy drive is connected, and an unprotected floppy diskette with more then 50KB spare space in the drive, system will save all log files into the root directory the diskette; otherwise, system will save all log files in the root directory of RAM disk. Satellite M20 Maintenance Manual...
Page 78: Quick Start
Please see the following example-- Mouse test. Use arrow key to select ‘PS2 Mouse’ item on ‘Peripheral’ in the menu, then press Space key to select it. (When selected, there is a X marked in the Satellite M20 Maintenance Manual...
Page 79 Select ‘Test Mouse’ or press F8 to run the test. The test information would prompt in the screen as below. This test item need user to verify whether the mouse works normally. The test result will be displayed in the following screen: Satellite M20 Maintenance Manual...
Page 80 CPU Speed Test (Step by Step): Select test item: Select System—CPU—CPU Speed, then press the Enter key. Parameters Setting Choose the OK button after you set the proper parameters in the following window. Satellite M20 Maintenance Manual...
Page 81 As to the method adopted in CPU Speed test, user should highlight the test item and press Enter to start testing. And the user has to setup the parameters every time before running the test. Using this method, only one test item would be tested at one time. Satellite M20 Maintenance Manual...
Page 82: Audio Play Test
3.2.6 DMI Write In addition to reading the DMI information, DMI Write also permit attributes editing and updating: Manufacture, Product Name, Version, Serial Number, UUID and OEM Part Number, etc. The following screen will be displayed: Satellite M20 Maintenance Manual...
Page 83 The confirmation screen is as below: The attributes that have been modified would be marked in red, otherwise in yellow. User could press F2 to save the changes, or press F4 to ignore and exit the current program. Satellite M20 Maintenance Manual...
Page 84: System Information
The name of the program is marked on the top of the screen. At the bottom, the function keys are listed for user operation. During the detection, keyboard operation is invalid. When the detection finished, the hardware components information will be displayed as follows: Satellite M20 Maintenance Manual...
Page 85: View Logs
3.2.10 The Diagnostics Screen Explanation Below is an example of running a test item. It includes the following parts: Diagnostics Windows, Test Status Area, Progress Bar, Error List, Test Item’s Title, Status Bar and Message Box. Satellite M20 Maintenance Manual...
Page 86 When the user calls ABORT ALL, the following message box will prompt for his selecting. 4. Title Bar: Title Bar located at the top of the window, it includes information as follows: Satellite M20 Maintenance Manual...
Page 87 ‘S.TIME: 2003-03-27 19:17:11’ in the above screen; Break On Error: Display ‘HALT’ as shown in the above screen when ‘Break On Error’ is enabled; Wait On Error: Display ‘WAIT’ as shown in the above screen when ‘Wait On Error’ is enabled; Satellite M20 Maintenance Manual...
Page 88 3.2 Quick Start 3 Diagnostic Programs Pause Enable: Display PAUSE when “Pause Enable” is enabled; Manual Interrupt Method: Display ‘Esc: Break’ to tell the user how to manually interrupt the test process. Satellite M20 Maintenance Manual...
Page 89: Options
Execute all selected test items in this editor, the hot key is F8. If “Interactive” option in batch parameters has not been selected on, a warning message would be shown as below: Edit Batch Parameters • Satellite M20 Maintenance Manual...
Page 90: Batch Parameters Configuration
Service Diagnostics Editor by command of EXIT. Exit to DOS • Exit the Service Diagnostics Editor and back to DOS. 3.3.2 Batch Parameters Configuration The batch parameters configuration screen can be accessed through Service Diagnostics/OPTIONS -> EDIT BATCH PARAMETERS -> BATCH PARAMETERS: Satellite M20 Maintenance Manual...
Page 91 Whether the option here is enabled, it would affect all the test items while the same option in “Item Parameters Configuration” only affect that test item Monitor Battery Life Monitor the remaining battery capacity (percent). Monitor CPU Thermal Monitor the CPU temperature. Satellite M20 Maintenance Manual...
Page 92: Item's Parameters Configuration
Repeat times of the test item. Interactive • Pause at the end of test items and wait for the user to response whether the test item requires the user to assist the test process, such as the Key Stroke test. Satellite M20 Maintenance Manual...
Page 93: Load Batch Parameters
Below is the screen shot of “Load Batch Parameters”. In this window, you can specify the .INI files that you wanted to be edited or modified. 3.3.5 Save Batch Parameters Here you can save the edited or modified content to the batch parameters files. Satellite M20 Maintenance Manual...
Page 94: Log Parameters Setting
'Log File Name' will be generated. Log Options • Log Errors With this parameter selected, errors will be recorded when the test fails. Log Test Activities With this parameter selected, the subtest results will be recorded. Log Test Start Time Satellite M20 Maintenance Manual...
Page 95: Specify Log Viewer
You can specify the Log file viewer in the Specify Log Viewer screen. The default viewing program of Service Diagnostics is LogView.exe 3.3.8 Display LOG File You can specify the Log file for viewing in the Display Error Log File screen. Satellite M20 Maintenance Manual...
Page 96: Log Viewer
Specify LOG Viewer. 3.3.9 LOG Viewer Service Diagnostic Log viewer: ↑, ↓ • Scroll a line backward or forward on the screen. Page Up, Page Down • Scroll a page backward or forward on the screen. Satellite M20 Maintenance Manual...
Page 97: Log File Sample
The following section is a sample of log file: DIAG REPORT <Module Name>: Service Diagnostic Ver 1.00 ..Keydoard Test Build Date 2002.12.31 [KBLed] Begin Time: Thu Mar 13 14:38:05 2003 Satellite M20 Maintenance Manual...
Page 98 <Module Name>: Service Diagnostic Ver 1.00 ..System Board Test Ver2002.12.31 [Speaker] Begin Time: Thu Mar 13 14:39:24 2003 Speaker : FAIL ITEM TEST FAIL Function ID :306 Error Code :30612 Error Message :System Board Speaker Error End Time: Thu Mar 13 14:39:34 200 Satellite M20 Maintenance Manual...
Page 99: Subtests
Incremental Decremental Test [Idcrment] Extended Pattern Read/Write Cycle Test [XWRCycle] Read Cycle Test [XRCycle] Walking 1's Test [WalkHigh] Walking 0's Test [WalkLow] Memory Address [Address] Refresh Test [Refresh] Cache Memory [CacheOne] Random Memory Randomize Test [Random] Satellite M20 Maintenance Manual...
Page 100 VESA 800x600x32K Mode [V800600_16] VESA 800x600x64K Mode [V800600_24] VESA 800x600x16M Mode [V800600_32] VESA 800x600x32bit Mode 1024X768 Video Modes [V1024768_8] VESA 1024x768x256 Mode [V1024768_15] VESA 1024x768x32K Mode [V1024768_16] VESA 1024x768x64K Mode [V1024768_24] VESA 1024x768x16M Mode [V1024768_32] VESA 1024x768x32bit Mode Satellite M20 Maintenance Manual...
Page 101 [COMInLoopback1] External Loop back [COMExLoopback1] FIFO Test [COMFIFO1] Parity Check [COMParity1] Stop Bits Check [COMStopbit1] Word Length Check [COMWordlength1] IrDA IrDA Master [IrMaster] IrDA Slave [IrSlave] LAN Card Device ID Detection [DeviceID] Vendor ID Detection [VendorID] Satellite M20 Maintenance Manual...
Page 102 3.4 Subtests 3 Diagnostic Programs Mac Address Detection [MAC Address] Peripheral Keyboard Keyboard Map [KBMap] Keyboard Data Line [KBDataLn] Keyboard Led [KBLed] Keyboard Clock Line [KBClokLn] Mouse PS2 Mouse [MSPS2] Stick Point [MSStick] Satellite M20 Maintenance Manual...
Page 103: System Test
CPU Speed Comparison--Whether you want to make a comparison of the CPU speed with the value set in ‘Expected CPU Speed’, you should choose ‘Yes’; otherwise, ‘No’. Satellite M20 Maintenance Manual...
Page 104 PC user to operate at a higher frequency when plugged into a wall outlet and automatically switch to a lower power and frequency when running on battery, conserving battery life. Satellite M20 Maintenance Manual...
Page 105 This test item is to check whether the DMA controller works normally. 2. Interval Timer This test item is to check whether the Interval Timer (18.2Hz, 55ms) works normally. 3. Clock/Calendar This test item is to check whether the system clock/calendar works normally. 4. Speaker Satellite M20 Maintenance Manual...
Page 106 ACPI Table Test: Check the correctness of ACPI relative configuration tables in the current system. Subtest 03 FAN Speed Test This test item is to check whether the fan currently used works normally in the different speeds of stop, slow, middle and fast. Satellite M20 Maintenance Manual...
Page 107: Memory Test
‘Percent (%) mentioned at below; Pattern Size: Choose the pattern size – BYTE, WORD, DWORD or ALL; Percent (%): Choose the percentage of the defined range of the memory to be tested; Satellite M20 Maintenance Manual...
Page 108 Extended Pattern In addition to the above pattern test with the memory, there are Read/Write Cycle test and Read Cycle Test for the extended memory. Below is the parameter dialog window of the extended pattern test. Satellite M20 Maintenance Manual...
Page 109 This test item is to check whether the memory refresh works normally. The parameter dialog window is as follows: Subtest 08 Cache Memory The test item is to check whether the CPU internal cache memory could be accessed correctly. Satellite M20 Maintenance Manual...
Page 110: Memory Test
Subtest 10 Data Bus Test This test item is to check whether the data bus works normally. Subtest 11 Memory Speed Test This test item is to check the data transferring rate for the cache memory and the system memory. Satellite M20 Maintenance Manual...
Page 111: Storage
LBA Start, LBA End--Specify the start and end byte in LBA (Large Block Address); Retry—Specify the maximum retrying times whether the operation fails; Percent—Specify the coverage rate in percentage of the total disk; Test Mode—Choose test mode from the following options: Satellite M20 Maintenance Manual...
Page 112 Option-- Select sequential test or random test; Percent-- Specify the coverage rate in percentage of the total disk. 3. Performance Check the HDD’s seeking speed and transferring the data rate. This test item involves the following parameter: Satellite M20 Maintenance Manual...
Page 113 Check the CDROM controller’s status. 2. Data Transfer Rate Check the data transfer rate of the CDROM drive. It will read data from the CDROM disc and calculate the data transfer rate. This test needs a data CD. Satellite M20 Maintenance Manual...
Page 114 Check the write function of CDRW drive. The CDRW disk must be formatted with Direct CD format. 8. Tray Eject Test Check the eject function of the CDROM. It will eject the CDROM and ask the user to confirm if operation success. Satellite M20 Maintenance Manual...
Page 115: Video
It will be displayed as follows:. 2. Text Attribute This test item is to check whether the text attribute of normal, hi-intensity, inverse, and blinking in VGA text mode could be correctly displayed on the screen. Satellite M20 Maintenance Manual...
Page 116 This test item is to check whether the video memory could be correctly written and read in VGA text mode. Based on the comparison of written data with read data, the program would report PASS or FAIL. Satellite M20 Maintenance Manual...
Page 117 In the test, user is required to respond based on the instruction in the screen. 5. 80 * 25 Text Mode This test item is to check whether 80*25 Text Mode works normally. In the test, user is required to respond based on the instruction in the screen. Satellite M20 Maintenance Manual...
Page 118 This test item is to check whether all the video modes supported by the video card works normally. In the test, user is required to respond following the instruction in the screen. 1. 640X480 Video Modes Test Satellite M20 Maintenance Manual...
Page 119 (write data & read data). Below is the test item’s parameter dialog window: Subtest 05 AGP Test This test item is to report the system’s Accelerated Graphics Port status and check whether AGP registers works normally. Satellite M20 Maintenance Manual...
Page 120: Video
Direct Color Test This test item is to check the video adapter’s composing ability of direct color in high and true color mode. In the test, user is required to respond based on the instruction in the screen. Satellite M20 Maintenance Manual...
Page 121 BitBlt is the abbreviation of ‘Bit Block Translate’, that means the copy of data block for 3 types, from video memory to video memory, from video memory to system memory, and from system memory to video memory. Satellite M20 Maintenance Manual...
Page 122 What should be done is to write the data of the type of BitBLT operation and the location of BitBLT source area and destination area into the BitBLT registers, and all those operations will be completed automatically by BitBLT engine with minimum CPU intervention. Satellite M20 Maintenance Manual...
Page 123: Communication (Comm)
1. Register Check Check whether the data register and control register works normally. 2. IRQ Check Check whether LPT interrupt works normally. 3. External Loop back Check whether there is open or short circuit issue. 4. ECP Mode Satellite M20 Maintenance Manual...
Page 124 This test item shorts circuits in the external pins, to unite data sending and data receiving as self-shake and self-circle. Below is the external connector’s description: Fixture Status (PIN2) RD (PIN3) TD (PIN7) RTS (PIN8) CTS (PIN1) DCD (PIN4) DTR (PIN6) DSR (PIN9) RI 1. Register Check Satellite M20 Maintenance Manual...
Page 125 3. Internal Loop back This test item is to check whether the COM port could correctly send and receive data at different transferring rate through internal cycle system. Below is the parameter dialog window. Parity: Choose the parity mode; Satellite M20 Maintenance Manual...
Page 126 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps, and 115200bps. The unit under testing (UUT) is called Slave, that requires a unit whose IrDA works normally(that is called Master) for transferring data between Slave and Master. Below is the parameter dialog window of IrDA test. Satellite M20 Maintenance Manual...
Page 127 Prepare a Master whose IrDA works normally, then run the test item in ‘Comm/IrMaster’ under Diagnostics menu; The master stays here to wait for slave requesting. Prepare a slave. User should choose the test item ‘Comm/IrSlave’ and set parameters. Below is the Slave Testing window. Satellite M20 Maintenance Manual...
Page 128 1. Device ID Detection Detect the device ID of the network card. 2. Vendor ID Detection Detect the vendor ID of the network card. 3. MAC Address Detection Detect the MAC address of the network card. Satellite M20 Maintenance Manual...
Page 129 Whether keyboard test failure, program can terminated the test and report the fail information when it is time to timeout. 2. Keyboard Clock Line Test Check whether the keyboard clock line works normally 3. Keyboard data Line Test Check whether the keyboard data line works normally Satellite M20 Maintenance Manual...
Page 130 To test PS/2 mouse’s functionality, user should insert a PS/2 mouse before booting the unit; At the below screen of PS/2 mouse test, user can press the left button, right button, and move the mouse to verify its functions. Satellite M20 Maintenance Manual...
Page 131 This test item needs to be done by hand. When it draws a cursor on the screen, user needs to move the mouse and watch whether the cursor moves to the correct direction with the movement of the mouse. Satellite M20 Maintenance Manual...
Page 132: Error Codes And Description
The CPU frequency can not CPU Speedstep Speed alternate normally with the Confirm with the same type CPU. Change Error change of power mode. The CPU MMX register is MMX Test Error Replace the CPU. damaged. 02xx Memory Satellite M20 Maintenance Manual...
Page 133 As above. of the permitted range. The timer counts imprecisely. The frequency is beyond the Periodic Faster Error As above. standard. The frequency is below the Periodic Slower Error As above. standard. Satellite M20 Maintenance Manual...
Page 134 As above. 1) Physical problems with the 1) Check whether there is any video card. physical problem with the video VGA Mode Error 2) Physical problems with the card. monitor. 2) Check whether there is any Satellite M20 Maintenance Manual...
Page 135 1) Physical problems with the problem. 8bits Text and Attribute video card. 2) Check and see whether the Test Error 2) Physical problems with the monitor has any physical monitor. problem. 8bits Video Mode Test As above. As above. Satellite M20 Maintenance Manual...
Page 136: Audio
DTR/STR Connection As above. As above. Error Toshiba Fixture Error As above. As above. No Paper No papers in the printer. Check for papers in the printer. Satellite M20 Maintenance Manual...
Page 137 1) Check for the external fixture on the COM PORT; Data Receive Ready The Data Receive Ready Interrupt Error Interrupt can not be invoked. 2) Try with other test software; 3) Replace the SUPPER IO chip. Satellite M20 Maintenance Manual...
Page 138 Keyboard Map & Stroke Test Check the KBD connection and Test Fail fails. repeat the test. LED Flash Test Fail LED Flash test fails. As above. Clock Line Test Fail Clock Line Test fails. As above. Satellite M20 Maintenance Manual...
Page 139 As above. Test Failed Disk dos not support Change HD which supported Disk dos not support SMART SMART SMART and test again Disk read attribute Disk read attribute threshold Send the HD for repair. threshold error error Satellite M20 Maintenance Manual...
Page 140 The Disk in CDROM is The Disk in CDROM is not CD- Replace a CD-RW disk with not CD-RW Direct CD format or send the CD- ROM for repair. Eject Error Wrong CD-ROM drive. Exit from the wrong drive. Satellite M20 Maintenance Manual...
Page 142: Quick Test Item List
Direct Color Test LCD Panel Sequential/Random R/W SMART Check LAN Card Device ID Detection Vendor ID Detection Mac Address Detection IRQ Check Fixture External Loop back Fixture IRQ Check Fixture Internal Loop back Fixture External Loop back Fixture Satellite M20 Maintenance Manual...
Page 143 Chapter 4 Replacement Procedures...
Page 144 4 Replacement Procedures 4-ii Satellite M20 Maintenance Manual...
Page 145 Selectable Bay Modules................... 4-20 Removing the Selectable Bay Module............... 4-20 Installing the Selectable Bay Module ..............4-21 Disassembling the DVD-ROM Drive..............4-22 Assembling the DVD-ROM Drive ..............4-23 Switch Cover......................4-24 Removing the Switch Cover ................4-24 Satellite M20 Maintenance Manual 4-iii...
Page 146: Cooling Module
Power Supply Board ....................4-49 Removing the Power Supply Board..............4-49 Installing the Power Supply Board ..............4-49 4.14 Sound Board......................4-50 Removing the Sound Board ................4-50 Installing the Sound Board ................4-51 4.15 Cooling Module ....................... 4-52 4-iv Satellite M20 Maintenance Manual...
Page 147 Installing the Membrane Switch ................ 4-60 4.19 Samsung 14.1-inch FL ..................... 4-61 Removing the Samsung 14.1-inch FL tube............4-61 Installing the Samsung 14.1-inch FL tube ............4-68 4.20 Toshiba 14.1-inch FL....................4-69 4.21 Sharp 14.1-inch FL ....................4-82 Satellite M20 Maintenance Manual...
Page 148 Figure 4-22-04 Removing the display mask step (4)............4-35 Figure 4-22-05 Removing the display mask step (5)............4-36 Figure 4-22-06 Removing the display mask step (6)............4-36 Figure 4-22-07 Removing the display mask step (7)............4-36 4-vi Satellite M20 Maintenance Manual...
Page 149 Figure 4-47 Removing the screws for fixing the FL tube back cover ......... 4-66 Figure 4-48 Disconnecting the FL tube ground wire............4-66 Figure 4-49 Removing the FL tube..................4-67 Figure 4-50 Removing the tape and insulation sheet............4-69 Figure 4-51 Removing the screws ..................4-70 Satellite M20 Maintenance Manual 4-vii...
Page 150 Figure 4-67 Replacing the lamp unit .................. 4-85 Figure 4-68 Attaching the bezel..................4-86 Figure 4-69 Fastening the screws on both sides ..............4-86 Figure 4-70 Attaching the protective cover and tapes ............4-87 Figure 4-71 Visual inspections ................... 4-88 4-viii Satellite M20 Maintenance Manual...
Page 151 4 Replacement Procedures Satellite M20 Maintenance Manual 4-ix...
Page 153 4. 1 0 4.15 4.18 4.19 4. 2 0 Sound Cooling Membrane Speakers LCD/FL inverter board, both of which are Module Switch Cable Boar Microphone shown above the LCD module. 4.13 Power Cooling module 4.17 System 4.16 Board Satellite M20 Maintenance Manual...
Page 154: General
DANGER: Always use the genuine batteries or replacement batteries authorized by Toshiba. Batteries other than those differ in specifications and are incompatible with the computer. They may burst or explode. Never heat or disassemble the battery packs to avoid leakage of alkaline solutions.
Page 155 Inside the PC are components that become hot during operation (such as the CPU and cooling module). To avoid burns, let the hot components cool down before starting inspection or repair task. Satellite M20 Maintenance Manual...
Page 156: Before You Begin
See the appropriate explanations and figures for screw sizes. To avoid personal injury, use care to handle components that have sharp edges or corners. After you have replaced an FRU, check that the FRU works correctly to ensure normal computer operation. Satellite M20 Maintenance Manual...
Page 157: Disassembly Procedures
Check that all the required screws are used to fix the FRUs. Using wrong screws can damage the threads or heads of the screws or does not ensure firm FRU fixing. After installing an FRU, make sure that the FRU and computer can work normally. Satellite M20 Maintenance Manual...
Page 158: Tools And Equipment
- By DTI 0.153 N･m (1.5 kgf･cm) - By Sharp 0.092 N･m (0.9 kgf･cm) - By Samsung 0.153 N･m (1.5 kgf･cm) M2.5x4 PSP TITE screws 0.204 N･m (2.0 kgf･cm) M2.5x6 GIZA TITE screws 0.36 N･m (3.5 kgf･cm) Satellite M20 Maintenance Manual...
Page 159: Colors Of Screw Shanks
U (stands for unique-pan head screws, studs, etc.) Symbol examples 6 mm bind screw 12 mm bind screw 5 mm stud (The numeral represents the rounded length of the threaded portion irrespective of the entire stud length.) Satellite M20 Maintenance Manual...
Page 160: Removing The Battery Pack
Do not drop, hit, twist, or bend the battery packs. Do not scratch or break up their casing. 1. Turn the computer upside down so that its front can face you. 2. Slide out the battery lock. Figure 4-1 Battery lock Satellite M20 Maintenance Manual...
Page 161 4 Replacement Procedures 3. Slide the battery release latch and remove the battery pack from the computer. NOTE: Dispose of the used battery packs as required by local ordinances or regulations. Figure 4-2 Removing the battery pack Satellite M20 Maintenance Manual...
Page 162: Installing The Battery Pack
2. Push the eject button for the PC card to be removed until it stops and release the button. 3. When the eject button popped out slightly, push it again. 4. When the PC card popped out, grasp it and pull it out. 4-10 Satellite M20 Maintenance Manual...
Page 163: Installing The Optional Pc Card
3. Lock the PC card by sliding the PC card security lock. After the PC card is installed, check the hardware configuration in the Hardware Setup or TSETUP program to make sure that the PC card in compatible with the current hardware configuration. Satellite M20 Maintenance Manual 4-11...
Page 164: Removing The Optional Memory
2. Remove the two M2.5x4 white bind screws. 3. Remove the memory cover. CAUTION: Do not touch the connectors on the memory modules or in the computer. Contaminated connectors can cause memory access problems. Figure 4-4 Removing the memory cover 4-12 Satellite M20 Maintenance Manual...
Page 165 4. Spread out the two memory lock stoppers so that the memory module can be raised. 5. Pull the memory module up and out at an angle, using care to the connectors. Figure 4-5 Removing the optional memory Satellite M20 Maintenance Manual 4-13...
Page 166: Installing The Optional Memory
TSETUP program to make sure that the installed memory module has been recognized by the system. If it has not been recognized yet, check the connections. CAUTION: To prevent system malfunctions, always use Slot A first to insert the memory modules. 4-14 Satellite M20 Maintenance Manual...
Page 167: Removing The Mdc Card
2. Remove one M2.5x4 black bind screw. 3. Remove the MDC cover. CAUTION: Do not touch the connectors on the MDC card or in the computer. Contaminated connectors can cause MDC card failures. Figure 4-6 Removing the MDC cover Satellite M20 Maintenance Manual 4-15...
Page 168 4. Remove the two M2.2x4 white bind screws for fixing the MDC card. 5. Raise the MDC card and disconnect it from CN501. 6. Disconnect the MDC cable from the connector PJ1 on the MDC card. Figure 4-7 Removing the MDC card 4-16 Satellite M20 Maintenance Manual...
Page 169: Installing The Mdc Card
After the computer is turned on, check the hardware configuration in the Hardware Setup or TSETUP program to make sure that the installed MDC card has been recognized by the system. If it has not been recognized yet, check the connections. Satellite M20 Maintenance Manual 4-17...
Page 170: Hdd
Remove the HDD (hard disk drive) according to the following procedures and Figures 4-8, 4-9, and 4-10. 1. Remove one M2.5x6 black bind screw for fixing the HDD cover. 2. Remove the HDD cover by sliding it in the direction of the arrows. Figure 4-8 Removing the HDD cover 4-18 Satellite M20 Maintenance Manual...
Page 171 4. Place the HDD pack on a flat surface (such as a desk), and remove the two M3x4 white flat-head screws. 5. Remove the HDD bracket. Figure 4-10 Removing the HDD bracket CAUTION: Do not apply pressure to the top or bottom of the drive. Satellite M20 Maintenance Manual 4-19...
Page 172: Installing The Hdd
HDD pack by its sides. 4. Insert the white plastic grip into the gap between the computer and HDD pack, and install the HDD cover. 5. Fix the HDD cover with one M2.5x6 black bind screw. 4-20 Satellite M20 Maintenance Manual...
Page 173: Selectable Bay Modules
For removing the selectable bay cover, see the explanations of "Disassembling the CD-ROM Drive." CAUTION: Handle the selectable bay module carefully, because it becomes hot during operation. Figure 4-11 Removing the selectable bay module Satellite M20 Maintenance Manual 4-21...
Page 174: Installing The Selectable Bay Module
Install the selectable bay module according to the following procedures and Figure 4-11. 1. Place the selectable bay module in the correct position and slide it in. 2. Push it until it clicks into place. 4-22 Satellite M20 Maintenance Manual...
Page 175: Disassembling The Dvd-Rom Drive
1. Remove the two M2x8 black bind screws. 2. Remove the connector cover and connector from the DVD-ROM drive. Figure 4-12 Removing the connector from the DVD-ROM drive 3. Remove the five M2x3 white super flat-head screws. 4. Remove the frame. Satellite M20 Maintenance Manual 4-23...
Page 176: Assembling The Dvd-Rom Drive
1. Attach the frame to the DVD-ROM drive. 2. Fix the frame with the five M2x3 white super flat-head screws. 3. Attach the connector and connector cover to the DVD-ROM drive, and fix them with the two M2x8 black bind screws. 4-24 Satellite M20 Maintenance Manual...
Page 177: Switch Cover
Remove the switch cover according to the following procedures and Figures 4-14 and 4-15. 1. Turn the computer upside down. 2. Remove two M2.5x12 black bind screws. 3. Remove the eight latches on the switch cover. Figure 4-14 Removing the Switch cover Satellite M20 Maintenance Manual 4-25...
Page 178: Install The Switch Cover
Install the switch cover according to the following procedures and Figures 4-14 and 4-15. 1. Install the switch cover. 2. Turn the computer upside down. 3. Fix switch cover with two M2.5x12 black bind screws. 4-26 Satellite M20 Maintenance Manual...
Page 179: Keyboard
3. Move the keyboard in the direction of the arrow until the keyboard connector appears. Figure 4-16 Removing the keyboard lock and screws 4. Disconnect the keyboard cable from CN18 on the system board and remove the keyboard. Satellite M20 Maintenance Manual 4-27...
Page 180: Installing The Keyboard
2. Align the latches on the front of the keyboard with the latch holes on the top cover. 3. Fix the keyboard with the keyboard lock and M2.5x2 black bind screws. 4. Install the keyboard holder in the correct position and fasten the five latches securely. 4-28 Satellite M20 Maintenance Manual...
Page 181: Wireless Lan Card
4. Disconnect the two antenna cables with the tweezers. 5. Spread out both the left and right stoppers for fixing the wireless LAN card until the card can be raised. Satellite M20 Maintenance Manual 4-29...
Page 182: Installing The Wireless Lan Card
Wireless LAN cards can fail if they are contaminated with sweat, natural oils, etc. from your hands. 4. Fix the antenna cables with glass tape. 5. Install the wireless LAN card cover. 6. Fix the cover with one M2x4 black screw. 4-30 Satellite M20 Maintenance Manual...
Page 183: Speakers
3. Remove the speaker cables from the guides (grooves) on the top cover. 4. Remove the two and M2.5x6 black flat-head screws (one screw for one speaker). 5. Remove the left and right speakers. Figure 4-20 Removing the speakers Satellite M20 Maintenance Manual 4-31...
Page 184: Installing The Speakers
1. Place the left and right speakers in their correct position and fix them with the M2.5x6 black flat-head screws. (one screw for onespeaker). 2. Push the speaker cables into the guides on the top cover. 3. Fix the two M2.5x20 black bind screws. 4-32 Satellite M20 Maintenance Manual...
Page 185: Display Mask
4.8 Display Mask 4 Replacement Procedures Display Mask Removing the Display Mask Remove the display mask according to the following procedures and Figure 4-22. 1. Remove the six seals for covering the screws. 2. Remove the two M2.5x6 black flat-head screws and four white flat-head screws. NOTE: When removing the screws, support the display by its back with one hand.
Page 186 Fig 4-22-03 Removing display mask step (3) Fig 4-22-04 Removing display mask step (4) b. Same as above step-a, fully separate the display mask and LCM panel in left side portion and right side portion. 4-34 Satellite M20 Maintenance Manual...
Page 187 Fig 4-22-05 Removing display mask step (5) Fig 4-22-06 Removing display mask step (6) c. The last step is to fully separate the downside portion of display mask and LCM panel. Fig 4-22-07 Removing display mask step (7) Satellite M20 Maintenance Manual 4-35...
Page 188: Installing The Display Mask
2. Fix the display mask with the six M2.5x6 black flat-head screws. NOTE: When fastening the screws, support the display by its back with one hand. 3. Attach the six seals to the screw heads to cover the screws. 4-36 Satellite M20 Maintenance Manual...
Page 189: Fl Inverter Board
1. Remove the M2x5 white bind screw. Figure 4-23 Removing the FL inverter board 2. Raise the FL inverter board and disconnect the LCD/FL cable from CN1. 3. Disconnect the HV cable from CN2 and remove the FL inverter board. Satellite M20 Maintenance Manual 4-37...
Page 190: Installing The Fl Inverter Board
1. Connect the LCD/FL cable to CN1, and connect the HV cable to CN2. 2. Place the FL inverter board in the correct position. 3. Fasten the M2x5 white bind screw to fix the FL inverter board. 4-38 Satellite M20 Maintenance Manual...
Page 191: Lcd Modules
1. Open the display panel. Disconnect the LCD/FL cable CN7 on the system board. 2. Remove the three M2.5x4 black bind screws for fixing the LCD module. 3. Carefully tilt the LCD module toward you. Figure 4-25 Removing the 14.1-inch LCD module and screws Satellite M20 Maintenance Manual 4-39...
Page 192 M2.5x6 white bind screw LCD module M2x4 white bind screw M2x4 white bind screw Figure 4-26 Remove LCD Panel Holder Screw 6. Remove the tape and gasket for securing the LCD/FL cable connector and disconnect the LCD/FL cable. 4-40 Satellite M20 Maintenance Manual...
Page 193 Right LCD bracket M2x4 white bind screw LCD module Left LCD bracket M2x4 white bind screw Figure 4-27 Remove LCD Latch Holder Screw Gasket LCD module LCD/FL cable connector Figure 4-28 Remove LCD/FL Cable Connecter Satellite M20 Maintenance Manual 4-41...
Page 194: Installing The 14.1-Inch Lcd Module
4. Place the LCD in the correct position and fix it with the two M2x6 white bind screws and M2x4 white bind screws. 5. Place the LCD module in the correct position and fix it with the three M2.5x4 black bind screws. 4-42 Satellite M20 Maintenance Manual...
Page 195: Top Cover
- Ten M2.5x6 black bind screws - One M2.5x4 black bind screws - One M2.5x12 black bind screw - Two M2x4 white bind screws Figure 4-29 Removing the screws from the bottom and back of the computer Satellite M20 Maintenance Manual 4-43...
Page 196 3. Disconnect the flat cable of the membrane switch from CN19 on the system board. M2.5x6 black bind screw CN19 Flat cable of the memberane switch Figure 4-30 Removing the top cover 4. Remove the top cover, using care to the three latches at the front. 4-44 Satellite M20 Maintenance Manual...
Page 197: Installing The Top Cover
3. Turn the computer upside down and fix it with the following 14 screws: - Ten M2.5x6 black bind screws - One M2.5x4 black bind screws - One M2.5x12 black bind screw - Two M2x4 white bind screw Satellite M20 Maintenance Manual 4-45...
Page 198: Rtc Batteries
4.12 RTC Batteries WARNING: To replace RTC (real-time clock) batteries, always use genuine batteries or replacement batteries authorized by Toshiba. Using batteries other than those can cause battery explosions or other damage. Never use an RTC battery that looks abnormal. Replace it with a new one, and dispose of the old battery as required by local ordinances or regulations.
Page 199: Removing The Rtc Battery
Install the RTC battery according to the following procedures and Figure 4-31. 1. Connect the RTC battery cable to the RTC battery connector on the power supply board. 2. Place the RTC battery in the correct position. 4-48 Satellite M20 Maintenance Manual...
Page 200: Power Supply Board
2. Fix the power supply board with the two M2.5x4 black bind screws. 3. Connect the cable harnesses to CN21 and CN22 on the system board. Satellite M20 Maintenance Manual 4-49...
Page 201: Sound Board
2. Remove the M2.5x4 black flat-head screw for fixing the sound board. 3. Remove the lever of the slide switch. 4. Remove the sound board CN1002 CN1001 CN10 CN1000 Figure 4-33 Removing the sound board 4-50 Satellite M20 Maintenance Manual...
Page 202: Installing The Sound Board
3. Attach the lever of the slide switch to the correct position. 4. Fix the sound board with the M2.5x4 black flat-head screw. 5. Connect the SUMI-cards to CN1002 and CN10 on the system board. Satellite M20 Maintenance Manual 4-51...
Page 203: Cooling Module
1. Disconnect the cable of the cooling module from CN15 on the system board. 2. Remove the two M2.5x6 black flat-head screws and four M2x4 white bind screws. 3. Remove the cooling module. CN15 Figure 4-34 Removing the cooling module 4-52 Satellite M20 Maintenance Manual...
Page 204: Installing The Cooling Module
NOTE: Apply silicon greases with a special syringe to cover the surface of the CPU chip completely. CPU chip Figure 4-35 Applying silicon greases 2. Place the cooling module in the correct position. 3. Fasten the four M2x4 white bind screws. 4. Fasten the two M2.5x6 black flat-head screws. Satellite M20 Maintenance Manual 4-53...
Page 205 4 Replacement Procedures 4.15 Cooling Module 5. Connect the cooling module cable to CN15 on the system board. 4-54 Satellite M20 Maintenance Manual...
Page 206: Cpu
1. Unlock the CPU by rotating the cam on the CPU socket 180 degrees to the left with a flat-blade screwdriver (in the order shown in the figure below). 2. Remove the CPU. Figure 4-36 Removing the CPU Satellite M20 Maintenance Manual 4-55...
Page 207: Installing The Cpu
2. Attach the CPU to the correct position in the CPU socket. Align the CPU with the CPU socket by using the triangle as a guide. Figure 4-37 Installing the CPU CAUTION: Place the CPU by aligning the triangle with the shaded area. 4-56 Satellite M20 Maintenance Manual...
Page 208 4.16 CPU 4 Replacement Procedures 3. Fix the CPU by rotating the cam 180 degrees to the right with a flat-blade screwdriver. Figure 4-38 Fixing the CPU Satellite M20 Maintenance Manual 4-57...
Page 209: System Board
If not so, parts on the board can be damaged when the HDD case is removed. 5. Remove the three M2.5x4 black flat-head screws for fixing the system board. 6. Remove the system board. 4-58 Satellite M20 Maintenance Manual...
Page 210: Installing The System Board
5. Place the selectable bay cover in the correct position and fixed it with the three M2.5x6 black flat-head screws. 6. Fasten the three M2.5x4 screws and fix the system board and I/O board to the base cover. Satellite M20 Maintenance Manual 4-59...
Page 211: Membrane Switch
Installing the Membrane Switch Install the membrane switch according to the following procedures and Figure 4-41. 1. Place the membrane switch in the correct position. 2. Fix it with the three M2.5x4 black flat-head screws. 4-60 Satellite M20 Maintenance Manual...
Page 212: Samsung 14.1-Inch Fl
4-42 to 4-49. 1. Flip the LCD module over and remove the PCB cover and three pieces of tape. CAUTION: Use care not to damage the PCB. Figure 4-42 Removing the PCB cover and tape Satellite M20 Maintenance Manual 4-61...
Page 213 2. Remove the two screws for fixing the power supply board. CAUTION: Use care not to damage the PCB. Source PCB Screw Screw Figure 4-43 Removing the two screws for fixing the power supply board 4-62 Satellite M20 Maintenance Manual...
Page 214 3. Release the 18 hooks and remove the upper chassis from the frame. There are six hooks at the top, four hooks on each of the left- and right-hand sides, and four hooks at the bottom. Top hooks Side hooks Bottom hooks Figure 4-44 Releasing the 18 hooks Satellite M20 Maintenance Manual 4-63...
Page 215 4 Replacement Procedures 4.19 Samsung 14.1-inch FL 4. Remove the panel assembly from the backlight assembly. CAUTION: Use care not to damage the TCP during working. Panel assembly Backlight assembly Figure 4-45 Removing the panel assembly 4-64 Satellite M20 Maintenance Manual...
Page 216 4.19 Samsung 14.1-inch FL 4 Replacement Procedures 5. Remove the two clips. 6. Remove these: Prism sheet Diffuser sheet Light guide plate (LGP) Reflective sheet Clip Clip B/L sheets Figure 4-46 Removing the clips and backlight sheets Satellite M20 Maintenance Manual 4-65...
Page 217 Figure 4-47 Removing the screws for fixing the FL tube back cover 8. Disconnect the ground wire of the FL tube from the frame. Hot wire Frame GND wire Figure 4-48 Disconnecting the FL tube ground wire 4-66 Satellite M20 Maintenance Manual...
Page 218 4.19 Samsung 14.1-inch FL 4 Replacement Procedures 9. Remove the FL tube from the frame. FL assembly Frame Figure 4-49 Removing the FL tube Satellite M20 Maintenance Manual 4-67...
Page 219: Installing The Samsung 14.1-Inch Fl Tube
8. Fix the power supply board with the two screws. 9. Attach the PCB cover and three pieces of tape. 4-68 Satellite M20 Maintenance Manual...
Page 220: Toshiba 14.1-Inch Fl
4.20 Toshiba 14.1-inch FL 4 Replacement Procedures 4.20 Toshiba 14.1-inch FL Replace the Toshiba 14.1-inch FL tube according to the following procedures and Figures 4-50 to 4-61. 1. Attach a protective sheet to the display screen of the module. 2. Flip the module over and place it on a flat surface that is free of foreign objects.
Page 221 CAUTION: To unfasten the screws, use an insert bit of point size 0 for Philips screwdrivers. Product label ＦＬ破棄ラベル > P C - G F 1 3 < FL disposal label ＢＬ　Ｓ／Ｎ　ラベル Label (cautions for disposal of FL tubes) BL S/N label Figure 4-51 Removing the screws 4-70 Satellite M20 Maintenance Manual...
Page 222 When removing the bezel, gently remove the top double-sided tape at the bottom of the surface of the bezel to prevent cell damage. Use care not to deform the bezel. Figure 4-52 Removing the double-sided tape Satellite M20 Maintenance Manual 4-71...
Page 223 4.20 Toshiba 14.1-inch FL 10. Spread out the PCB horizontally, as shown in Figure 4-53. CAUTION: Use care not to damage the TAB. ＸＰＣＢを裏面から開く． Open the X-PCB from the reverse side. Figure 4-53 Spreading out the PCB horizontally 4-72 Satellite M20 Maintenance Manual...
Page 224 Use care not to peel off the masking tape in the three areas on the cell. 両面テープ３箇所はがしながら Remove the cell by peeling off the three セルをはずす． pieces of double-sided tape. Figure 4-54 Removing the cell of the PCB assembly Satellite M20 Maintenance Manual 4-73...
Page 225 ベゼル開口部より the opening of the bezel. (4597, Sumitomo 3M) テープのはみ出し無きこと両面テープ：４５９７（住友３Ｍ） (tape length) 2 8 5 （テープ長さ） ±0 .5 Tapes must not be overlapped. テープ同志重ならないこと Figure 4-55 Attaching double-sided tape to the bezel's reverse side 4-74 Satellite M20 Maintenance Manual...
Page 226 The sheet must not be dislocated from the frame. シートがフレームからはずれていないこと。 The frame must not be overlaid with the sheet. The sheet must not be シートがフレームに乗り上げないこと dislocated from the frame. シートがフレームからはずれていないこと。 Figure 4-56 Inspecting the replacement backlight Satellite M20 Maintenance Manual 4-75...
Page 227 Use care not to damage the TAB. ＰＣＢ付きセル Cell of PCB 左上突き当て Align the top バックライト Backlight left corner. 両面テープ剥離紙とる：３箇所 Remove paper on the double-side tape (three locations). Figure 4-57 Removing the paper coated with a mold release 4-76 Satellite M20 Maintenance Manual...
Page 228 NOTE: The GND-CU and lamp reflector on the left-hand side must not go beyond the edges of the bezel. Use care not to damage the cables and TAB. The bezel latches must be engaged (there are five latches on the top edge, and two latches on the bottom edge). Satellite M20 Maintenance Manual 4-77...
Page 229 CAUTION: Fasten the screws in the orders shown in Figure 4-60. No loose fastening is allowed. The tightening torque must not exceed 0.147 Ｎ･ m (1.5kgf ･ cm) for all the eight screws. For the Philips screwdrivers, use an insert bit of point size 0. 4-78 Satellite M20 Maintenance Manual...
Page 230 22. Attach the tape for the bezel to the bottom area close to the lamp (two locations). 23. Attach the tape for fixing the FL tube cable (one location). CAUTION: When attaching tape and insulation sheets, use care not to damage the TAB and lamp cable connections. Satellite M20 Maintenance Manual 4-79...
Page 231 The tape edge must not go モジュール端を目安に貼る貼り基準： beyond the bezel's edge. ベゼル端から出ないことゴムキャップ：ケーブル引き出し口を覆うこと Rubber cap: Must cover the opening for the cable. Figure 4-61 Attaching the insulation sheet and tape 4-80 Satellite M20 Maintenance Manual...
Page 232 (C), tape for lead fixing (D), and retention tape (H). Do not remove the shield tape (I) completely (leave the tape attached partially). Use care not to damage the TCP and chips. Discard the removed tapes. Figure 4-62 Removing the protectives cover and tape Satellite M20 Maintenance Manual 4-81...
Page 233 3. Flip the module over again (with the top of the module facing up) and remove the two clips that are close to the lamp. Clips Figure 4-64 Removing the clips close to the lamp 4-82 Satellite M20 Maintenance Manual...
Page 234 5. Flip the bezel over and remove the two screws (E) and lamp cover (F). Then replace the lamp unit (G) with a new one. Maximum allowed releasing torque is 0.1078N･m (1.1kgf･cm ). Figure 4-66 Removing the lamp cover Satellite M20 Maintenance Manual 4-83...
Page 235 8. Check that the guide rib is not overlaid with the panel. 9. After fitting the U-shaped side of the bezel to the P chassis, attach the bezel by pressing the two clips close to the lamp into place. 4-84 Satellite M20 Maintenance Manual...
Page 236 10. Fasten the five screws (E) on both sides. Check that the two clip sare engaged in place firmly. Maximum allowed tightening torque is 0.1176N ･ m (1.2kgf ･ cm). Clips Figure 4-69 Fastening the screws on both sides Satellite M20 Maintenance Manual 4-85...
Page 237 − Align a shorter side with the location where the head of the screw is covered. • When attaching the retention tape (H) − Align both a longer and a shorter sides with the rectangular hole. Rectangular hole Engaging pins Figure 4-70 Attaching the protective cover and tapes 4-86 Satellite M20 Maintenance Manual...
Page 238 Upon completion of the assembly, perform visual inspections, as shown in Figure 4-90. Engagement Attachment Engagement Attachment Screw Screw Engagement Engagement Screw Screw Damage Attachment Deformation Engagement Engagement Engagement Engagement Attachment Figure 4-71 Visual inspections Satellite M20 Maintenance Manual 4-87...
Page 239: Appendices
6000 1 次 Appendices...
Page 240 Appendices App-ii Satellite M20 Maintenance Manual...
Page 241: Keyboard
CN22 Power Supply Board I/F Connector (15-Pin) ........... C-16 C.17 CN21 Power Supply Board I/F Connector (14-Pin) ........... C-16 C.18 CN20 Power Supply Connector ................C-16 C.19 CN23 Power Supply Connector ................C-17 C.20 CN1 PS/2 Connector (6-Pin)................C-17 Satellite M20 Maintenance Manual App-iii...
Page 242 Korea Keyboard ....................E-2 Appendix F Wiring Diagrams ...................F-1 Parallel Port Wraparound Connector ................. F-1 Serial Port Wraparound Connector................F-1 Serial Port Direct Cable (9-Pin to 9-Pin) ..............F-2 Serial Port Direct Cable (9-Pin to 25-Pin) ..............F-2 App-iv Satellite M20 Maintenance Manual...
Page 243 Appendices Appendix G BIOS Rewrite Procedures ................G-1 Appendix H EC/KBC Rewrite Procedures..............H-1 Satellite M20 Maintenance Manual App-v...
Page 244: System Board
Table C-13 Parallel connector pin assignments (25-Pin) ..........C-15 Table C-14 Serial connector pin assignments (9-Pin) ............C-15 Table C-15 DC IN connector pin assignments (4-Pin) ...........C-15 Table C-16 Power supply board I/F connector pin assignments (15-Pin) ......C-16 App-vi Satellite M20 Maintenance Manual...
Page 245 Scan codes in Numlock mode............... D-6 Table D-4 Scan codes with Fn key................. D-6 Table D-5 Scan codes in overlay mode................D-7 Table D-6 No.124 key scan code ................... D-7 Table D-7 No.126 key scan code ................... D-8 Satellite M20 Maintenance Manual App-vii...
Page 246: Appendix A Handling The Lcd Module
LCD cover before securing the module with four screws. Do not force the module into place, because stress can affect its performance. Also, the panel’s polarized surface is easily scarred, so be carefully when handling it. Satellite M20 Maintenance Manual...
Page 247 Also, never scratch the surface. 4. If water or other liquid is left on the panel’s surface for a long period, it can change the screen’s tint or stain it. Be sure to quickly wipe off any liquid. Satellite M20 Maintenance Manual...
Page 248 5. Glass is used in the panel, so be careful not to drop it or let it strike a hard object, which could cause breakage or cracks. 6. CMOS-LSI circuits are used in the module, so guard against damage from electrostatic discharge. Be sure to wear a wrist or ankle ground when handling the module. Satellite M20 Maintenance Manual...
Page 249 7. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods. 8. Do not store the module at temperatures below specifications. Cold can cause the liquid crystals to freeze, lose their elasticity or otherwise suffer damage. Satellite M20 Maintenance Manual...
Page 250 9. Do not disassemble the LCD module. Disassembly can cause malfunctions. 10. If you transport the module, do not use packing material that contains epoxy resin (amine) or silicon glue (alcohol or oxime). These materials can release gas that can damage the panel’s polarization. Satellite M20 Maintenance Manual...
Page 251: Appendix B Board Layout
Apx. B Board Layout Appendices Appendix B Appendix B Board Layout System Board Front View Figure B-1 System Board layout (front) c b a Z Satellite M20 Maintenance Manual...
Page 252 Serial connector USB connector PS/2 Connector Internal left speaker connector JACK1 TV OUT connector LCD/FL INVERTER connector Internal right speaker connector CN10 Sound board I/F connector CN1002 Sound board I/F connector CN14 PC CARD SLOT connector Satellite M20 Maintenance Manual...
Page 253: System Board Back View
Apx. B Board Layout Appendices System Board Back View Figure B-2 System Board layout ( back ) A’ B’ H’ C’ G’ D’ E’ F’ Table B-2 System board ICs and connectors (back) Satellite M20 Maintenance Manual...
Page 254 Expansion memory connector slot B B’ CN504 Memory connector C’ JACK1001 HEAD PHONE Connector D’ JACK1000 Microphone Connector E’ CN501 MDC Connector F’ CN500 BIOS Socket G’ CN502 MDC I/F Connector H’ CN503 Expansion docking Connector B Satellite M20 Maintenance Manual...
Page 255: Power Board Front View
Apx. B Board Layout Appendices Power Board Front View Figure B-3 Power Board layout (Front) Satellite M20 Maintenance Manual...
Page 256: Power Board Back View
Power Board Layout (Back View) Table -3 Power supply board ICs and connectors Mark Number Name Main battery connector CN522 System board I/F Connector CN521 System Board I/F Connector CAB1 System board I/F wiring SUB battery connector Satellite M20 Maintenance Manual...
Page 257: Appendix C Pin Assignments
M_DATA_R_(7) M_DATA_R_(8) M_DATA_R_(12) +V2.5 +V2.5 M_DATA_R_(9) M_DATA_R_(13) M_DQS_R(1) M_DM_R(1) M_DATA_R_(10) M_DATA_R_(14) M_DATA_R_(11) M_DATA_R_(15) +V2.5 +V2.5 M_CLK_DDR0 +V2.5 M_CLK_DDR0# M_DATA_R_(16) M_DATA_R_(20) M_DATA_R_(17) M_DATA_R_(21) +V2.5 +V2.5 M_DQS_R(2) M_DM_R(2) M_DATA_R_(18) M_DATA_R_(22) M_DATA_R_(19) M_DATA_R_(23) M_DATA_R_(24) M_DATA_R_(28) +V2.5 +V2.5 M_DATA_R_(25) M_DATA_R_(29) Satellite M20 Maintenance Manual...
Page 258 +V2.5 +V2.5 +V2.5 +V2.5 +V2.5 +V2.5 M_CKE1 M_CKE0 M_A_FR_(12) M_A_FR_(11) M_A_FR_(9) M_A_FR_(8) M_A_FR_(7) M_A_FR_(6) M_A(5) M_A(4) M_A_FR_(3) M_A(2) M_A(1) M_A_FR_(0) +V2.5 +V2.5 M_A_FR_(10) M_BS1_FR# M_BS0_FR# M_RAS_FR# M_WE_FR# M_CAS_FR# M_CS0# M_CS1# M_DATA_R_(32) M_DATA_R_(36) M_DATA_R_(33) M_DATA_R_(37) +V2.5 +V2.5 Satellite M20 Maintenance Manual...
Page 259 M_DATA_R_(47) +V2.5 +V2.5 +V2.5 M_CLK_DDR1# M_CLK_DDR1 M_DATA_R_(48) M_DATA_R_(52) M_DATA_R_(49) M_DATA_R_(53) +V2.5 +V2.5 M_DQS_R(6) M_DM_R(6) M_DATA_R_(50) M_DATA_R_(54) M_DATA_R_(51) M_DATA_R_(55) M_DATA_R_(56) M_DATA_R_(60) +V2.5 +V2.5 M_DATA_R_(57) M_DATA_R_(61) M_DQS_R(7) M_DM_R(7) M_DATA_R_(58) M_DATA_R_(62) M_DATA_R_(59) M_DATA_R_(63) +V2.5 +V2.5 ICH_SMDAT +V3S ICH_SMCLK +V3S Satellite M20 Maintenance Manual...
Page 260: Cn505 Expansion Memory Slot B Connector (2) (200-Pin
M_DATA_R_(7) M_DATA_R_(8) M_DATA_R_(12) +V2.5 +V2.5 M_DATA_R_(9) M_DATA_R_(13) M_DQS_R(1) M_DM_R(1) M_DATA_R_(10) M_DATA_R_(14) M_DATA_R_(11) M_DATA_R_(15) +V2.5 +V2.5 M_CLK_DDR3 +V2.5 M_CLK_DDR3# M_DATA_R_(16) M_DATA_R_(20) M_DATA_R_(17) M_DATA_R_(21) +V2.5 +V2.5 M_DQS_R(2) M_DM_R(2) M_DATA_R_(18) M_DATA_R_(22) M_DATA_R_(19) M_DATA_R_(23) M_DATA_R_(24) M_DATA_R_(28) +V2.5 +V2.5 M_DATA_R_(25) M_DATA_R_(29) Satellite M20 Maintenance Manual...
Page 261 +V2.5 +V2.5 +V2.5 +V2.5 +V2.5 +V2.5 M_CKE3 M_CKE2 M_AB(12) M_AB(11) M_AB(9) M_AB(8) M_AB(7) M_AB(6) M_AB(5) M_AB(4) M_A(3) M_AB(2) M_AB(1) M_A(0) +V2.5 +V2.5 M_AB(10) M_BS1# M_BS0# M_RAS# M_WE# M_CAS# M_CS2# M_CS3# M_DATA_R_(32) M_DATA_R_(36) M_DATA_R_(33) M_DATA_R_(37) +V2.5 +V2.5 Satellite M20 Maintenance Manual...
Page 262 M_DATA_R_(47) +V2.5 +V2.5 +V2.5 M_CLK_DDR4# M_CLK_DDR4 M_DATA_R_(48) M_DATA_R_(52) M_DATA_R_(49) M_DATA_R_(53) +V2.5 +V2.5 M_DQS_R(6) M_DM_R(6) M_DATA_R_(50) M_DATA_R_(54) M_DATA_R_(51) M_DATA_R_(55) M_DATA_R_(56) M_DATA_R_(60) +V2.5 +V2.5 M_DATA_R_(57) M_DATA_R_(61) M_DQS_R(7) M_DM_R(7) M_DATA_R_(58) M_DATA_R_(62) M_DATA_R_(59) M_DATA_R_(63) +V2.5 +V2.5 ICH_SMDAT +V3S ICH_SMCLK +V3S Satellite M20 Maintenance Manual...
Page 263: Cn7 Lcd/Fl Inverter Connector (40-Pin
+V5S_R1 INV_PWM_3 +V5S +V5S CN6 External Monitor Connector (15-Pin) Table C-4 External monitor connector pin assignments (15-pin) Pin No. Signal Name Pin No. Signal Name ROUT GOUT BOUT VGAGND VGAGND VGAGND +V5S DAC_DDCADATA DAC_HSYNC DAC_VSYNC DAC_DDCACLK Satellite M20 Maintenance Manual...
Page 264: Cn14 Pc Card Slot Connector (150-Pin
A_CADR(12) A_CADR(23) A_CADR(15) A_CADR(22) A_CADR(16) ACARDVPP ACARDVCC A_RDY_IREQ A_CADR(21) A_WE# A_CADR(20) A_CADR(14) A_CADR(19) A_CADR(13) A_CADR(18) A_CADR(8) A_CADR(17) A_CADR(9) A_IOWR# A_CADR(11) A_IORD A_OE# A_VS1 A_CADR(10) A_CE1# A_CE2# A_CDAT(15) A_CDAT(7) A_CDAT(14) A_CDAT(6) A_CDAT(13) A_CDAT(5) A_CDAT(12) A_CDAT(4) A_CDAT(11) A_CDAT(3) Satellite M20 Maintenance Manual...
Page 265 B_CADR(23) B_CADR(15) B_CADR(22) B_CADR(16) BCARDVPP BCARDVCC B_RDY_IREQ B_CADR(21) B_WE# B_CADR(20) B_CADR(14) B_CADR(19) B_CADR(13) B_CADR(18) B_CADR(8) B_CADR(17) B_CADR(9) B_IOWR# B_CADR(11) B_IORD B_OE# B_VS1 B_CADR(10) B_CE1# B_CE2# B_CDAT(15) B_CDAT(7) B_CDAT(14) B_CDAT(6) B_CDAT(13) B_CDAT(5) B_CDAT(12) B_CDAT(4) B_CDAT(11) B_CDAT(3) B_CD1# Satellite M20 Maintenance Manual...
Page 266: Cn10 Sound Board I/F Connector (30-Pin
+V3S +AVCC +AVCC SPK_OUT_R+ SPK_OUT_L+ AREF VOLUME SE_HP# KILL_SWCH IR_TX IR_RX IR_SD CN15 Cooling Module Connector (3-Pin) Table C-7 Cooling module connector pin assignments (3-pin) Pin No. Signal Name Pin No. Signal Name +V5S FAN1_TACH C-10 Satellite M20 Maintenance Manual...
Page 267: Cn18 Keyboard Connector (34-Pin
SCAN OUT(11) SCAN OUT(10) SCAN IN(3) SCAN IN(2) SCAN IN(1) SCAN OUT(9) SCAN OUT(8) SCAN OUT(7) SCAN IN(0) SCAN OUT(6) SCAN OUT(5) SCAN OUT(4) SCAN OUT(3) SCAN OUT(2) SCAN OUT(1) SCAN OUT(0) +V5S CAPS_LED#_3 NUM_LED#_3 SCROLL_LED#_ Satellite M20 Maintenance Manual C-11...
Page 268: Cn501 Mdc Connector (30-Pin
Pin No. Signal Name PHONE MDC_+V3 MDC_+3V FRAME_SYNC_ICH SDATA_OUT_ICH SDATA_IN1_ICH CODEC_RST#_ICH BITCLK_3_ICH C.10 CN502 MDC I/F Connector Table C-10 MDC I/F connector pin assignments (2-Pin) Pin No. Signal Name Pin No. Signal Name MDMTIP MDMRNG C-12 Satellite M20 Maintenance Manual...
Page 269: Cn17 Selectable Bay Connector (72-Pin
SDCS1#_3 SDA(2) SDA(0) +V5S_MB +V5S_MB +V5S_MB SDA(1) IRQ15_3 SDDACK#_35 SDIORDY_35 SDIOR#_3 SDIOW#_3 SDDRQ_35 SDD15 SDD00 SDD14 SDD01 +V5S_MB +V5S_MB SDD13 SDD02 SDD12 SDD03 SDD11 SDD04 SDD10 SDD05 SDD09 SDD06 SDD08 SDD07 SDRST#_3 CD_GND CDAUDL CDAUDR Satellite M20 Maintenance Manual C-13...
Page 270: Cn16 Hdd Connector (44-Pin
Pin No. Signal Name PDRST#_3 PDD07 PDD08 PDD06 PDD09 PDD05 PDD10 PDD04 PDD11 PDD03 PDD12 PDD02 PDD13 PDD01 PDD14 PDD00 PDD15 PDDRQ_35 PDIOW#_3 PDIOR#_3 PDIORDY_35 PDDACK#_35 IRQ14_3 PDA1 PDA0 PDA2 PDCS1#_3 PDCS3#_3 HDD_LED# +V5S +V5S C-14 Satellite M20 Maintenance Manual...
Page 271: Cn5 Parallel Connector (25-Pin
Serial connector pin assignments (9-Pin) Pin No. Signal Name Pin No. Signal Name RING C.15 CN11 DC IN Connector (4-Pin) Table C-15 DC IN connector pin assignments (4-Pin) Pin No. Signal Name Pin No. Signal Name +VADPTR +VADPTR Satellite M20 Maintenance Manual C-15...
Page 272: Cn22 Power Supply Board I/F Connector (15-Pin
CN20 Power supply Connector pin assignments (20-Pin) Pin No. Signal Name Pin No. Signal Name +VADPTR +V5a CHG_EN AC_SEL ACPRES BAT_LATCH_RS BATT_PWM BAT0_CLK BAT0_DATA BAT1_CLK BAT1_DATA CHG_0 DCHG_0 CHG_1 DCHG_1 BATT_IN0 BATT_IN1 +V3AON SLP_S4#_3R RTCVCC C-16 Satellite M20 Maintenance Manual...
Page 273: Cn23 Power Supply Connector
Pin No. Signal Name Pin No. Signal Name CVBS_B C.22 CN2 USB Connector (8-Pin) Table C-22 USB connector pin assignments (8-Pin) Pin No. Signal Name Pin No. Signal Name USBVCC1 USB_PN0_B USB_PP0_B USBVCC1 USB_PN2_B USB_PP2_B Satellite M20 Maintenance Manual C-17...
Page 274: Cn19 Membrane Connector (6-Pin
RJ45 (8-Pin+2LED)/RJ11 (2-Pin) connector pin assignments Pin No. Signal Name Pin No. Signal Name LED_LAN# +3ALWAYS LED_LANACT# +3ALWAYS MDMTIP MDMRNG C.25 CN12 MINI PCI Connector (124-Pin) Table C-25 MINI PCI connector pin assignments (124-Pin) (1/2) C-18 Satellite M20 Maintenance Manual...
Page 275 Apx. C Pin Assignments Appendices Pin No. Signal Name Pin No. Signal Name WLON# PIRQC#_3 +V5S +V3S PIRQB#_3 PCI_RESET#_ CLK_MINIPCI_3R +V3S MPCIREQ0#_3 MPCIGNT0#_3 +V3S PCI_AD(31) PCI_PME#_3 PCI_AD(29) PCI_AD(30) PCI_AD(27) +V3S PCI_AD(25) PCI_AD(28) PCI_AD(26) PCI_CBE#(3) PCI_AD(24) Satellite M20 Maintenance Manual C-19...
Page 276 PCI_AD(17) PCI_AD(18) PCI_CB#(2) PCI_AD(16) PCI_IRDY#_3 +V3S PCI_FRAME#_3 CLKRUN#_3 PCI_TRDY#_3 PCI_SERR#_3 PCI_STOP#_3 +V3S PCI_PERR#_3 PCI_DEVSEL#_ PCI_CB#(1) PCI_AD(14) PCI_AD(15) PCI_AD(13) PCI_AD(12) PCI_AD(11) PCI_AD(10) AD09-P3P PCI_AD(8) PCI_CB#(0) PCI_AD(7) +V3S +V3S PCI_AD(6) PCI_AD(5) PCI_AD(4) PCI_AD(2) PCI_AD(3) PCI_AD(0) +V5S PCI_AD(1) C-20 Satellite M20 Maintenance Manual...
Page 277: Cn8 Internal Left Speaker Connector (3-Pin
Pin No. Signal Name Pin No. Signal Name SPK_OUT_L+ SPK_OUT_L- C.27 CN9 Internal Right Speaker Connector (2-Pin) Table C-27 Internal right speaker connector pin assignments (2-Pin) Pin No. Signal Name Pin No. Signal Name SPK_OUT_R+ SPK_OUT_R- Satellite M20 Maintenance Manual C-21...
Page 278: Cn503 Expansion Docking Connecter B (240 Pin + Power
Appendices Apx. C Pin Assignments C.28 CN503 Expansion Docking connecter B (240 pin + power) --- Satellite M20 model no use, only TE2300 model is available. Table C-28 Expansion Docking connector B (240 pin + power) (1/4) Pin No. Signal Name Pin No.
Page 279 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved DCOUT DCOUT DOCK_I2C_CLK IF-P5V +V5ALWAYS Reserved Reserved USB_PWR_EN USB_OC#4 USB_PWR_EN USB_OC#5 SHUTDOWN# Reserved DOUTL+ Satellite M20 Maintenance Manual C-23...
Page 280 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved +V3_ICHLAN TERMPL DCOUT DCOUT DOCK_I2C_DAT IF-P5V Reserved Reserved Reserved USB_PP4 USB_PN4 USB_PP5 USB_PN5 DOUTR+ DOUTR- DOUTL- DINL- DINR+ SLCT BUSY ACK# PDATA_R(5) PDATA_R(3) C-24 Satellite M20 Maintenance Manual...
Page 281: Cn520 Rtc Battery Connector (2-Pin
RTC battery connector pin assignments (2-Pin) Pin No. Signal Name Pin No. Signal Name RTCVCC Sound Board C.30 JACK1001 Headphone Connector (8-Pin) Table C-30 Headphone connector pin assignments (8-Pin) Pin No. Signal Name Pin No. Signal Name AB_SPK_OUT_L AB_SPK_OUT_L +AVCC_BOARD Satellite M20 Maintenance Manual C-25...
Page 282: Jack1000 Microphone Connector (8-Pin
AB_A_LEFT +AVCC_BOARD +AVCC_BOARD +AVCC_BOARD +AVCC_BOARD +AVCC_BOARD C.33 CN1001 IR Connector (10-Pin) Table C-33 IR connector pin assignments (10-Pin) Pin No. Signal Name Pin No. Signal Name +V3ALWAYS_ AB_KILL_SW BOARD +V3S_BOARD +V3S_BOAR +V3S_BOARD AB_IR_TX AB_IR_RX AB_IR_SD C-26 Satellite M20 Maintenance Manual...
Page 283 Apx. D Keyboard Scan/Character Codes Appendix D Keyboard Scan/Character Codes Table D-1 Scan codes (set 1 and set 2) (1/4) Code set 1 Code set 2 Note Keytop Make Break Make Break ‘ ~ 7 & BkSp Satellite M20 Maintenance Manual...
Page 284 Table D-1 Scan codes (set 1 and set 2) (2/4) Code set 1 Code set 2 Note Keytop Make Break Make Break Caps Lock ‘ “ Enter Shift (L) No.102 , < . > Shift (R) Satellite M20 Maintenance Manual...
Page 285 Appendices Table D-1 Scan codes (set 1 and set 2) (3/4) Code set 1 Code set 2 Note Keytop Make Break Make Break Ctrl Alt (L) Space ALT (R) ← Home ↑ ↓ PgUp PgDn → Satellite M20 Maintenance Manual...
Page 286: Appendix D Keyboard Scan/Character Codes
4. * Fn key does not generate a code by itself. 5. * This key corresponds to key No. 42 in a 102-key model. 6. * Refer to Table D-6, No. 124 key scan code. 7. * Refer to Table D-7, No. 126 key scan code. Satellite M20 Maintenance Manual...
Page 287 Shift key, scan codes are changed as listed below: With left Shift With right Shift Set 1 E0 AA __________ E0 B6 E0 2A ___________ E0 36 Set 2 E0 F0 12 ________ E0 F0 59 E0 12 ___________ E0 59 Satellite M20 Maintenance Manual...
Page 288 Code set 2 Make Break Make Break ← Home ↑ ↓ PgUp PgDn → Table D-4 Scan codes with Fn key Code set 1 Code set 2 Keytop Make Break Make Break CTRL LALT ARROW NUMERIC Scrl Satellite M20 Maintenance Manual...
Page 289 Code set 1 Code set 2 Make Break Make Break (–) Table D-6 No.124 key scan code Shift Code set 1 Code set 2 Make Break Make Break Prt Sc Common Ctrl + Shift + Alt + Satellite M20 Maintenance Manual...
Page 290 Keyboard Scan/Character Codes Table D-7 No.126 key scan code Shift Code set 1 Code set 2 Make Make Pause Common* E1 1D E1 F0 Ctrl* E0 46 7E E0 F0 *: This key generates only make codes. Satellite M20 Maintenance Manual...
Page 291: Appendix E Key Layout
Apx E Key Layout Appendices Apx. E Key Layout Appendix E Key Layout United States (US) Keyboard Figure E-1 US keyboard United Kindom (UK) Keyboard Figure E-2 UK keyboard Satellite M20 Maintenance Manual...
Page 292: Korea Keyboard
Appendices Apx E Key Layout Korea Keyboard Figure E-3 Korea keyboard Satellite M20 Maintenance Manual...
Page 293: Appendix F Wiring Diagrams
Apx. F Wiring Diagrams Appendices Appendix F Appendix F Wiring Diagrams Parallel Port Wraparound Connector Figure F-1 Parallel port wraparound connector Serial Port Wraparound Connector Figure F-2 Serial port wraparound connector Satellite M20 Maintenance Manual...
Page 294: Serial Port Direct Cable (9-Pin To 9-Pin
Apx. F Wiring Diagrams Serial Port Direct Cable (9-Pin to 9-Pin) Figure F-3 Serial port direct cable (9-pin to 9-pin) Serial Port Direct Cable (9-Pin to 25-Pin) Figure F-4 Serial port direct cable (9-pin to 25-pin) Satellite M20 Maintenance Manual...
Page 295: Appendix Gbios Rewrite Procedures
] key (on the left of the space key). (Keep holding down the key until a message appears on the screen.) The BIOS rewriting starts. 6. When the process is completed, eject the BIOS/EC/KBC rewriting disk and the system is automatically reset. Satellite M20 Maintenance Manual...
Page 296: Appendix Hec/Kbc Rewrite Procedures
5. Normally it takes about 30 seconds to rewrite the EC/KBC. It may take 3 minutes (maximum), depending on the conditions of the computer or ICs. The computer is not hung up. Allow sufficient time. Never reboot or turn off the power to the computer before the rewriting is completed. Satellite M20 Maintenance Manual...

Toshiba Satellite M20 Maintenance Manual

Table of Contents

Figures

Chapter 4 Replacement Procedures

Chapter 1 Hardware Overview

Chapter 2 Troubleshooting

Chapter 2 Troubleshooting

Chapter 3 Diagnostic Programs

Table of Contents

Appendix

Appendix A Handling the LCD Module

Appendix B Board Layout

Appendix C Pin Assignments

Appendix D Keyboard Scan/Character Codes

Appendix E Key Layout

Appendix F Wiring Diagrams

Appendix Gbios Rewrite Procedures

Appendix Hec/Kbc Rewrite Procedures

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Summary of Contents for Toshiba Satellite M20