Sony slv-798hf; slv-998hf video cassette recorder (82 pages)
Summary of Contents for Sony SLV-789HF
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SLV-789HF/ 792HF/ 799HF RMT-V267A SERVICE MANUAL US Model SLV-789HF/799HF Canadian Model SLV-789HF/792HF/799HF Photo: SLV-799HF RMT-V267A S MECHANISM Refer to the SERVICE MANUAL of VHS MECHANICAL ADJUSTMENT MECHANICAL ADJUSTMENTS. (9-921-647-11) SPECIFICATIONS VIDEO CASSETTE RECORDER MICROFILM...
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CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU PUBLISHED BY SONY.
SERVICE NOTE 1. ERROR CODE INDICATION • Error codes are indicated using the lower 5 digits in the fluorescent display tube. “At this time, Colon “:” between character is not indicated.” Mode code indication when the error has occurred. Error code ERROR CODE 0 No error 1 Cam encoder error Loading direction...
SLV-789HF/792HF/799HF SECTION 3 BLOCK DIAGRAMS 3-1. OVERALL BLOCK DIAGRAM AR-20 BOARD DRUM MOTOR IC160 (2/2) MA-342 BOARD (SEE PAGE 4-28) (SEE PAGE 4-7,9,11,13,15,17,19,21) IC570 SYSTEM DRUM D VS DRUM CONTROL SERVO MOTOR D PG DRUM VHF/ D FG DRUM VIDEO...
SLV-789HF/792HF/799HF 3-2. VIDEO BLOCK DIAGRAM AR-20 BOARD MA-342 BOARD (SEE PAGE 4-7,9) (SEE PAGE 4-28) IC570 CN201 CN201 CN570 ARC DATA CJ561 IC160 IC160 42 ARC DATA DATA (1/3) ARC CLK Q500 Q561 LINE FROM IC160 41 ARC CLK CN201...
SLV-789HF/792HF/799HF 3-5. POWER BLOCK DIAGRAM MF-316 BOARD MA-342 BOARD (SEE PAGE 4-19) (SEE PAGE 4-26) IC403 REMOTE CONTROL RECEIVER CN403 CN461 D 5V TU701 T600 L604 R705 D609 D461 +30V L703 IC871 POWER V SET L704 P CONT M12 VDD 20...
SLV-789HF/792HF/799HF SECTION 4 PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) (For printed wiring boards) • b: Pattern from the side which enables seeing.
SLV-789HF/792HF/799HF 4-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS There are few cases that the part printed on this diagram isn’t mounted in this model. MA-342 (VIDEO, AUDIO, SERVO/SYSTEM CONTROL,TUNER) PRINTED WIRING BOARD — Ref. No. MA-342 Board:1,000 Series — MA-342 BOARD...
SLV-789HF/792HF/799HF DM-84 (TAPE OPERATION) PRINTED WIRING BOARD DM-84 (TAPE OPERATION) SCHEMATIC DIAGRAM — Ref. No. DM-84 Boards:2,000 Series — — Ref. No. DM-84 Boards:2,000 Series — There are few cases that the part printed on this diagram isn’t mounted in this model.
SLV-789HF/792HF/799HF MF-316 (POWER, EJECT SWITCH) PRINTED WIRING BOARD MF-316 (POWER, EJECT SWITCH) SCHEMATIC DIAGRAM — Ref. No. MF-316 Boards:4,000 Series — — Ref. No. MF-316 Boards:4,000 Series — There are few cases that the part printed on this diagram isn’t mounted in this model.
SLV-789HF/792HF/799HF DI-71 (DIAL TIMER SWITCH) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM AR-20 (ARC) PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM — Ref. No. DI-71 Boards:1,000 Series — — Ref. No. AR-20 Boards:3,000 Series — There are few cases that the part printed on this diagram isn’t mounted in this model.
5-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE (MA-342 BOARD IC160) Signal Pin No. I/O level MA-342 Board RESET Normally “H”, “L” when service interruption detected or restored. IC160#¢ MA-342 Board I2C DATA 1 Serial communication data to EEPROM I2C161. IC160#™...
5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS (MA-342 BOARD IC160) Pin No. Pin Name Function DEST Destination control input FULL ERS TU AFT Tuner analog AFT input FUNC KEY2 Key input FUNC KEY1 Key input S SENS Tape end sensor input T SENS Tape top sensor input V RF ENV...
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Pin No. Pin Name Function WHITE LEVEL White level signal input OSD V OUT OSD Video signal output OSD Vcc SW 5V (OSD block) External low-pass filter for slicer/AFC is connected to this terminal V HOLD External capacitor for slicer is connected to this terminal C VIDEO IN Control video signal input (osd, tuner, sorvo) D Ground...
SLV-789HF/792HF/799HF SECTION 6 ADJUSTMENTS 6-1. MECHANICAL ADJUSTMENTS 2-1-3. Set-up of Adjustment In this adjustment, NTSC pattern generator is connected with LINE input terminal. When check to tuner, connected VHF/UHF terminal. For the mechanical adjustments, please refer to the Check that the synchronizing signal of the Y signal has an amplitude “VHS MECHANICAL ADJUSTMENT MANUAL...
2-1-5. Input/Output Levels and Impedance 2-2. POWER SUPPLY CHECK 2-2-1. Output Voltage Check (MA-342 Board) Video input: LINE IN Input signal: 1 Vp-p, 75 ohms, unbalanced, Mode STANDBY sync negative +30 V Check Video output: LINE OUT C627 ‘ Measurement point Output signal: 1 Vp-p, 75 ohms, unbalanced, sync negative Specified value...
2-3. SERVO SYSTEM CHECK 2-4. AUDIO SYSTEM ADJUSTMENT 2-3-1. RF Switching Position Adjustment • Adjust both L ch and R ch. (MA-342 Board) [Connecting Instruments] [Adjustment Purpose] To adjust the link of the A-ch and B-ch of the tape playback outputs. Audio line OUTPUT L/R To make the unit compatible with other tapes and units.
2-4-2. Hi-Fi Switching Position Adjustment 2-4-3. Normal Audio System Adjustment (MA-342 Board) • Make adjustment in the SP mode unless otherwise specified. Use [Adjustment Purpose] a normal VHS cassette for an adjustment tape. To adjust the link of the A-ch and B-ch of the tape playback outputs. •...
2-5. ADJUSTING PARTS LOCATION DIAGRAM MA-342 BOARD (CONDUCTOR SIDE) CJ561 CN270 VIDEO/AUDIO LINE PB RF/RF SWP/HF ADJ IN/OUT C627 Q605 +30 V MTR12 V JS401 +12 V Q607 +6 V IC601 ND420 Q603 -11 V C642 +5 V 6-6E...
SLV-789HF/792HF/799HF SECTION 7 REPAIR PARTS LIST 7-1. EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • The mechanical parts with no reference number The components identified by mark ! or have some differences from the original one.
AR-20 DI-71 DM-84 7-2. ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • CAPACITORS: • SEMICONDUCTORS parts list may be different from the parts uF: µF In each case, u: µ, for example: specified in the diagrams or the components •...