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SERVICE MANUAL
MODEL
KV-PF21K70
http://cxema.ru
COMMANDER DEST.
CHASSIS NO.
RM-960
Korea
SCC-U35A-A
MUTING
POWER
DISPLAY
MTS
VIDEO
TV
1
2
3
4
5
6
7
8
9
0
JUMP
ENT
SOUND
VOL
CH
MODE
FAVORITE
WAKE UP
SELECT
SLEEP
PIC MODE
AUTO
ADD/
CABLE
PROGRAM
ERASE
TV
BG-3S
MODEL
COMMANDER DEST. CHASSIS NO.
TRINITRON
Self Diagnosis
Supported model
CHASSIS
COLOR TV
®
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Table of Contents
Related Manuals for Sony KV-PF21K70 Trinitron
Summary of Contents for Sony KV-PF21K70 Trinitron
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Page 1: Service Manual
Self Diagnosis Supported model SERVICE MANUAL BG-3S CHASSIS MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO. KV-PF21K70 RM-960 Korea SCC-U35A-A MUTING POWER DISPLAY VIDEO JUMP SOUND MODE FAVORITE WAKE UP SELECT SLEEP PIC MODE AUTO ADD/ CABLE PROGRAM ERASE TRINITRON COLOR TV... - Page 2 CARBON PAINTED ON THE CRT, AFTER REMOVING THE LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE ANODE. COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS MANUAL.
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Page 3: Table Of Contents
KV-PF21K70 RM-960 TABLE OF CONTENTS Section Title Page Section Title Page SELF DIAGNOSIS FUNCTION 5. DIAGRAMS ........ 4 Block Diagram ............35 1. GENERAL ............Frame Schematic Diagram ........38 Circuit Boards Location .......... 40 2. DISASSEMBLY Schematic Diagrams and Printed Wiring Boards ... 40 2-1. -
Page 4: Self Diagnosis Function
KV-PF21K70 RM-960 SELF DIAGNOSTIC FUNCTION The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically begin to flash. The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. - Page 5 KV-PF21K70 RM-960 DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT 2 times 5 times Lamp ON 0.3 sec. Lamp OFF 3 sec. Lamp OFF 0.3 sec. STANDBY/SLEEP lamp Diagnostic Item Flash Count* +B overcurrent/overvoltage 2 times Vertical deflection stopped White balance failure 5 times * One flash count is not used for self-diagnostic.
- Page 6 KV-PF21K70 RM-960 SELF-DIAGNOSTIC SCREEN DISPLAY For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurances of failure for confirmation on the screen: [To Bring Up Screen Test] In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below: [Screen display] / channel [5] / Sound volume [-] / Power ON ˘...
- Page 7 KV-PF21K70 RM-960 SELF-DIAGNOSTIC CIRCUIT IC301 IC001 IC003 Y/CHROMA JUNGLE SYSTEM MEMORY FROM IK-IN IO-8DAT B-DAT FROM O-LED [+B] Q604 C3 PROTECT IO-SDAT [V] Q509/507 [+B overcurrent ªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.
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Page 11: Set-Up Adjustments
KV-PF21K70 SECTION 3 RM-960 SET-UP ADJUSTMENTS • The following adjustments should be made when a complete Perform the adjustments in the following order : realignment is required or a new picture tube is installed. 1. Beam Landing • These adjustments should be performed with rated power 2. -
Page 12: Convergence
KV-PF21K70 RM-960 3-2. CONVERGENCE Preparation : • Before starting this adjustment, adjust the focus, horizontal size V. STAT and vertical size. • Minimize the brightness setting. • Provide dot pattern. (1) Horizontal and Vertical Static Convergence Center dot H. STAT VR H. - Page 13 KV-PF21K70 RM-960 (2) Dynamic Convergence Adjustment Preparation: • Before starting this adjustment, adjust the horizontal static convergence and the vertical static convergence on DY (3) Screen-corner Convergence Fix a Permalloy assy corresponding to the misconverged areas a-d : screen-corner misconvergence a to d : Permalloy assembly –...
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Page 14: Focus Adjustment
KV-PF21K70 RM-960 3-3. FOCUS ADJUSTMENT 3-4. G2 (SCREEN) AND WHITE BALANCE Adjust FOCUS control on the flyback transformer for the best ADJUSTMENTS 1. G2 (SCREEN) ADJUSTMENT focus. 1) Set the PICTURE to normal. 2) Put to VIDEO input mode without signals. 3) Connect R, G and B of the C3 board cathode to the oscillo- scope. -
Page 15: Circuit Adjustments
KV-PF21K70 SECTION 4 RM-960 CIRCUIT ADJUSTMENTS 4-1. ADJUSTMENTS WITH COMMANDER Service adjustments are made with the RM-960 that comes with 1, 4 this unit. Select the adjustment item. ↓ a. ENTERING SERVICE MODE 3, 6 Raise/lower the data value. With the unit on standby ↓... -
Page 16: Adjustment Method
KV-PF21K70 RM-960 4-2. ADJUSTMENT METHOD Item Number 00 of device GEO Use the same method for all Items. Use 1 and 4 to select the This explanation uses H-Position as an example. [MUTING] 1. Select “GEO 00 HPS” with the 1 and 4 buttons. adjustment item, use 3 and 6 to adjust, write with 2. -
Page 23: Diagrams
KV-PF21K70 KV-PF21K70 KV-PF21K70 SECTION 5 RM-960 RM-960 RM-960 DIAGRAM 5-1. BLOCK DIAGRAM SP ASSY MAIN. TUVIF TV V in AUDIO AUDIO OUT TU101 IC201 TV L in PROSESSOR BTF-FA401 TA8223K IC203 <slave: C0H> TDA7429L COMB FILTER <slave: 80H> (Glass Combs) CN304 V1 out COMB Y in... -
Page 24: Frame Schematic Diagram
KV-PF21K70 KV-PF21K70 KV-PF21K70 RM-960 RM-960 RM-960 5-2. FRAME SCHEMATIC DIAGRAM 5-3. CIRCUIT BOARDS LOCATION CN5901 CN704 CN701 200V VM MUTE PICTURE CN703 TUBE (RGB OUT) VELOCITY MODULATION NECK ASSY 5-4. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS DY ASSY Note: • All capacitors are in µF unless otherwise noted. - Page 25 (1) Schematic Diagram of A(1/2) board CN101 CN104 CN303 TO B3 BOARD TO H3 BOARD CN205 CN106 CN302 TO SPEAKER CN105 TO B3 BOARD CN1407 CN608 CN3603 :TAB CN201 TO B3 BOARD CN203 CN1405 CN102 CN901 CN1406 CN204 POWER SUPPLY,HV, TO B3 BOARD TO B3 BOARD TU101...
- Page 26 (2) Schematic Diagram of A(2/2) board CN507 TO C3 BOARD C644 C656 R500 CN1801 0.0022 R602 C645 R603 (P1-9H) 0.01 470k 135V 250V 135V 135V 135V 135V 135V 135V :FPRD R502 R501 NS ROT (P1-3H) D631 T604 L517 C500 135V ERC04-06SE L516 D632...
- Page 27 KV-PF21K70 KV-PF21K70 KV-PF21K70 RM-960 RM-960 RM-960 A BOARD IC001 CXP86461-628S NO TE: A BOARD The circuit indicated at left contains high voltage of over [POWER SUPPLY, HV, MICON, Y/C JUNGLE] 600 Vp-p. Please pay attention when inspecting or D004 D614 repairing it to prevent an electric shock.
- Page 28 (3) Schematic Diagrams of VM1 and C3 boards CN702 :TAB RGB OUT L701 :EL0607 CN5901 200V :S-MICRO C704 0.022 R703 C701 400V 0.0047 100k FOCUS 1/2W TO A BOARD CN701 CN306 G1-1 J701 :MINI R705 C5919 SOCKET 200V TO A BOARD C5902 RV702 CN505...
- Page 29 KV-PF21K70 KV-PF21K70 RM-960 RM-960 [VELOCITY MODULATION] [RGB OUT] – C Board – PRINTED WIRING BOARD – VM1 Board – C3 BOARD WAVEFORMS SECAM C3 BOARD IC701 STV-5112S 25Vp-p (H) 89Vp-p (H) 90Vp-p (H) BLUE FEEDBACK (RED FEEDBACK, NTSC 3.58 NTSC 4.43 GREEN FEEDBACK) BLUE OUTPUT PAL/SECAM :...
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Page 30: Schematic Diagram Of A(1/2) Board
KV-PF21K70 KV-PF21K70 RM-960 RM-960 (4) Schematic Diagram of F board [CISPR] PRINTED WIRING BOARD – F Board – CISPR F4601 CN4601 T3.15A FUSE 250V VDR461 JW4603 T4601 ERZV14D621 T.L.F AC IN AC OUT R4601 JW4604 AC IN AC OUT 1/2W CN4602 CN4603 :TAB... -
Page 31: Semicondutors
KV-PF21K70 KV-PF21K70 RM-960 RM-960 5-5. SEMICONDUCTORS DIODE TRANSISTOR AU-01Z-V1 D1NS4 UN2111 IRF614 CXA2139S (48PIN) RU-1P EL1Z HZS9.1NB2 UN2211 CXP86449-628S (64PIN) MARKING SIDE ERA22-08 RD20ES-B2 UN2213 TDA7429L (8PIN) VIEW GP08D RD30ESB2 UN2216 RD33EB3T RD3.9ES-B2 2SD2114K RD6.8ES-B1 2SC1162-G RGP02-17EL-6433 1SS119-25 2SC2712-YG 11EQS04 11ES2-NTA2B CATHODE TOP VIEW... -
Page 32: Exploded View
KV-PF21K70 KV-PF21K70 RM-960 RM-960 SECTION 6 EXPLODED VIEW NOTE: REF. NO. PART NO. DESCRIPTION REMARK • • Items with no par t number and no Items marked " * " are not stocked since The components identified by shading and mark ! are critical X-4037-848-1 BEZNET ASSY 3, 28, 33 they are seldom required for routine...