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Sony SLV-772HF Service Manual
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Sony SLV-772HF Service Manual

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SERVICE MANUAL
G
j
Refer to the SERVICE MANUAL of VHS
MECHANICAL ADJUSTMENT
MECHANICAL ADJUSTMENTS. (9-921-647-11)
MICROFILM
SLV-772HF/ 779HF
Photo: SLV-779HF
RMT-V266
for
SPECIFICATIONS
Canadian Model
VIDEO CASSETTE RECORDER
RMT-V266
US Model
SLV-779HF
SLV-772HF/779HF
S MECHANISM

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Summary of Contents for Sony SLV-772HF

  • Page 1 SLV-772HF/ 779HF RMT-V266 SERVICE MANUAL US Model SLV-779HF Canadian Model SLV-772HF/779HF Photo: SLV-779HF RMT-V266 S MECHANISM Refer to the SERVICE MANUAL of VHS MECHANICAL ADJUSTMENT MECHANICAL ADJUSTMENTS. (9-921-647-11) SPECIFICATIONS VIDEO CASSETTE RECORDER MICROFILM...
  • Page 2 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SERVICE NOTE • MA-341 (6/7) (MODE CONTROL) SCHEMATIC DIAGRAM ································································ 4-17 ERROR CODE INDICATION ··········································· 4 • MA-341 (7/7) (POWER SUPPLY) SCHEMATIC DIAGRAM ································································ 4-19 GENERAL • DM-84 (TAPE OPARATION) PRINTED Getting Started WIRING BOARD ····················································· 4-22 Unpacking ···········································································...

  • Page 4: Service Note

    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...

  • Page 5: General

    SLV-772HF/779HF SECTION 1 This section is extracted from GENERAL instruction manual.
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  • Page 29: Disassembly

    SLV-772HF/779HF SECTION 2 DISASSEMBLY NOTE: Follow the disassembly procedure in the n umerical order giv en. 2-1. CASE, FRONT PANEL BLOCK ASSEMBLY 1 Tapping screws 3 Upper case 6 Connector 2 Tapping screws Hooks 5 Connector Hooks 4 Connector Hooks Hooks 2-2.

  • Page 30: Rear Panel

    2-3. REAR PANEL 2 Rear panel (Engaged by the hook.) Hooks Hooks Hooks 1 POWER code stopper 2-4. MA-341 BOARD 2 Two screws 1 Four screws (Sumitite (B3) +BV) (Sumitite (B3) +BV) 3 MA-341 board with mechanism deck...

  • Page 31: Mechanism Deck

    2-5. MECHANISM DECK 3 Two connectors 6 Two screws (BVTP 3 × 12) 4 Screw 2 Screw (BVTP 3 × 12) (BVTP 3 × 12) 0 Mechanism deck 1 Flexible board 9 MA-341 board 5 MD base (R) 8 MD base (M) 7 MD base (R)

  • Page 32: Internal Views

    2-6. INTERNAL VIEWS — Top View — M901 Drum Assembly DZH-0A7A/Z-RP 8-839-057-51 ACE head block assembly A-6775-052-A Pinch press block assembly FE head A-6759-863-B 1-500-144-11 FL complete assembly A-6759-619-B Reel (S) table Reel (T) table 3-977-508-01 3-977-507-01 — Bottom View — M902 DC motor (capstan) 1-698-971-11...

  • Page 33: Circuit Boards Location

    2-7. CIRCUIT BOARDS LOCATION MA-341 VIDEO, AUDIO, SERVO/SYSTEM CONTROL, TUNER, POWER SUPPLY MF-316 (POWER, EJECT SWITCH) DM-84 (TAPE OPARATION) 2-5E...

  • Page 35: Block Diagrams

    SLV-772HF/779HF SECTION 3 BLOCK DIAGRAMS 3-1. OVERALL BLOCK DIAGRAM DRUM MOTOR IC160 (2/2) MA-341 BOARD (SEE PAGE 4-7,9,11,13,15,17,19) SYSTEM DRUM D VS DRUM CONTROL SERVO MOTOR S701 D PG RF CH DRUM D FG DRUM (SEE PAGE 4-23) VHF/ MF-316...

  • Page 36: Video Block Diagram

    SLV-772HF/779HF 3-2. VIDEO BLOCK DIAGRAM IC201 @ª REC IC201 @ª PB MA-341 BOARD FROM OSD V OUT (SEE PAGE 4 – 7, 9) IC160 %™ OSD V OUT PB IC160 %™ IC160 13 Q VD SYSCON BLOCK (SEE PAGE 3-5) IC201 @£...

  • Page 37: Block Diagram

    SLV-772HF/779HF 3-3. SERVO/SYSTEM CONTROL/TUNER BLOCK DIAGRAM FROM MA-341 BOARD (SEE PAGE 4-11,15) RF VIDEO Q500 VIDEO IC160 IC160 (3/3) BLOCK UNSW 5V TU VIDEO IC201 39 SYSTEM CONTROL (SEE PAGE 3-3) L161 D161 M12V AVCC D162 L162 L163 D109 RF AUDIO IC360 13...

  • Page 38: Audio Block Diagram

    SLV-772HF/779HF 3-4. AUDIO BLOCK DIAGRAM MA-341 BOARD (SEE PAGE 4-9,13) IC360 AUDIO PROCESSOR (HIFI) DRUM AUDIO CN260 HEAD Q382 CJ561 MUTE LINE MUTE AUDIO Q381 MUTE Q380 MUTE MUTE MUTE NA IN C389 RF AUDIO TU701 TUNER BLOCK NA OUT...

  • Page 39: Power Block Diagram

    SLV-772HF/779HF 3-5. POWER BLOCK DIAGRAM MA-341 BOARD (SEE PAGE 4 – 19) T600 TU701 R614 L604 R705 D609 +30V L703 POWER IC601 TRANS L704 D600 LF600 CN600 L601 D608 SW12V IC160 LINE SERVO/SYSTEM RECT FILTER F600 CONTROL P CONT P CONT SW12...

  • Page 41: Printed Wiring Boards And Schematic Diagrams

    SLV-772HF/779HF 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.
  • Page 42 MA-341 MA-341 BOARD BOARD (SERVO/SYSTEM CONTROL BLOCK) (VIDEO BLOCK (IC260)) 4fsc (out) C VIDEO IN !¡ IC160 #ª IC160 %§ REC/PB REC/PB IC260 4 REC/PB 5.0Vp-p 2.1Vp-p 14.31818MHz 3.6Vp-p OSC OUT !™ C SYNC IC160 $∞ IC160 %• REC/PB REC/PB IC260 5 REC/PB 4.2Vp-p 24.9MHz...

  • Page 43: Frame Schematic Diagram

    SLV-772HF/779HF 4-1. FRAME SCHEMATIC DIAGRAM FRAME SCHEMATIC DIAGRAM...

  • Page 44: Printed Wiring Boards And Schematic

    SLV-772HF/779HF 4-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS MA-341 (VUDEO, AUDIO, SERVO/SYSTEM CONTROL, TUNER, POWER SUPPLY) PRINTED WIRING BOARD There are few cases that the part printed on this diagram isn’t mounted in this model. — Ref. No. MA-341 Board; 1,000 Series —...
  • Page 45 SLV-772HF/779HF For schematic diagram MA-341 (1/7) (VIDEO) SCHEMATIC DIAGRAM • Refer to page 4-5 for printed wiring board. — Ref. No. MA-341 Board; 1,000 Series — • Refer to page 4-2 for waveforms. EP_L_IN _EP_OUT PB FELT EP_H_IN MA-341 BOARD...
  • Page 46 SLV-772HF/779HF MA-341 (2/7) (AUDIO) SCHEMATIC DIAGRAM For schematic diagram • Refer to page 4-5 for printed wiring board. — Ref. No. MA-341 Board; 1,000 Series — • Refer to page 4-2 for waveforms. AUDIO 4-10 MA-341(2/7)
  • Page 47 SLV-772HF/779HF MA-341 (3/7) (SERVO/SYSTEM CONTROL) SCHEMATIC DIAGRAM For schematic diagram • Refer to page 4-5 for printed wiring board. — Ref. No. MA-341 Board; 1,000 Series — • Refer to page 4-2 for waveforms. Note : Note : The components identified by Les composants identifiés par...
  • Page 48 SLV-772HF/779HF MA-341 (4/7) (AUDIO PROCESS) SCHEMATIC DIAGRAM For schematic diagram • Refer to page 4-5 for printed wiring board. — Ref. No. MA-341 Board; 1,000 Series — AUDIO PROCESS 4-13 4-14 MA-341(4/7)
  • Page 49 SLV-772HF/779HF MA-341 (5/7) (TUNER) SCHEMATIC DIAGRAM For schematic diagram • Refer to page 4-5 for printed wiring board. — Ref. No. MA-341 Board; 1,000 Series — Note : Note : The components identified by Les composants identifiés par mark ! or dotted line with mark une marque ! sont critiques ! are critical for safety.
  • Page 50 SLV-772HF/779HF MA-341 (6/7) (MODE CONTROL) SCHEMATIC DIAGRAM For schematic diagram • Refer to page 4-5 for printed wiring board. — Ref. No. MA-341 Board; 1,000 Series — MF-316 2.7k RD5.6ES-T1B3 1.5k MF-316 MODE CONTROL 4-17 4-18 MA-341(6/7)
  • Page 51 SLV-772HF/779HF MA-341 (7/7) (POWER SUPPLY) SCHEMATIC DIAGRAM For schematic diagram • Refer to page 4-5 for printed wiring board. — Ref. No. MA-341 Board; 1,000 Series — 6.8M 1000p 0.033 DIA.5 AGC1A-V0 0.0022 100p 2SC4054P 200V 22 1/4W MPG06D-6052PKG3 AU02A-V0 0.47...

  • Page 52: Wiring Board

    SLV-772HF/779HF DM-84 (TAPE OPARATION) PRINTED WIRING BOARD — Ref. No. DM-84 Board; 2,000 Series — MA-341 There are few cases that the part printed on this diagram isn’t mounted in this model. BOARD (AUDIO BLOCK (IC201)) MA-341 VIDEO, AUDIO, !¶...

  • Page 53: Power/Eject Switch

    SLV-772HF/779HF MF-316 (POWER/EJECT SWITCH) SCHEMATIC DIAGRAM MF-316 (POWER/EJECT SWITCH) PRINTED WIRING BOARD — Ref. No. MF-316 Board; 2,000 Series — — Ref. No. MF-316 Board; 2,000 Series — There are few cases that the part printed on this diagram isn’t mounted in this model.

  • Page 55: Interface, Ic Pin Function Description

    SLV-772HF/779HF SECTION 5 INTERFACE, IC PIN FUNCTION DESCRIPTION 5-1. SYSTEM CONTROL — MECHANISM BLOCK INTERFACE (MA-341 BOARD IC160) CASSETTE CASSETTE TAPE TAPE STOP Signal Pin No. EJECTED LOARDING UNLOARDING THREADING UNTEREADING MA-341 Board IC160#£ MA-341 Board MODE 1 — —...

  • Page 56: System Control - System Control Peripheral Circuit Interface

    5-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE (MA-341 BOARD IC160) Signal Pin No. I/O level MA-341 Board RESET Normally “H”, “L” when service interruption detected or restored. IC160#¢ MA-341 Board I2C DATA 1 Serial communication data to EEPROM I2C161. IC160#™...

  • Page 57: Servo/System Control Microprocessor Pin Functions (Ma-341 Board Ic160)

    5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS (MA-341 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...
  • Page 58 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...

  • Page 59: Mechanical Adjustments

    SLV-772HF/779HF 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 AERIAL 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...

  • Page 60: Input/Output Levels And Impedance

    2-1-5. Input/Output Levels and Impedance 2-2. POWER SUPPLY CHECK 2-2-1. Output Voltage Check (MA-341 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...

  • Page 61: Servo System Check

    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-341 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.

  • Page 62: Hifi Switching Position Adjustment

    2-4-2. HiFi Switching Position Adjustment 2-4-3. Normal Audio System Adjustment (MA-341 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. •...

  • Page 63: Adjusting Parts Location Diagram

    2-5. ADJUSTING PARTS LOCATION DIAGRAM MA-341 BOARD (CONDUCTOR SIDE) CJ561 CN270 VIDEO/AUDIO LINE RF/HF SWP IN/OUT +30 V Q605 Q603 MTR12 V Q607 JS401 +12 V IC601 -11 V 6-6E...

  • Page 65: Repair Parts List

    SLV-772HF/779HF 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.

  • Page 66: Chassis Section

    7-1-2. CHASSIS SECTION not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks * 51 3-959-383-01 BASE (R), MD 3-970-608-21 SUMITITE (B3), +BV * 52 A-6791-802-A MA-341 BOARD, COMPLETE 3-979-564-51 PANEL, REAR...

  • Page 67: Mechanism Deck Section-1

    7-1-3. MECHANISM DECK SECTION-1 #701 supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 3-977-509-01 WASHER, THRUST 3-977-514-01 OPENER, LID 3-977-507-01 TABLE, REEL (S) (GRAY) 3-977-441-01 GEAR, PINCH PRESSING 3-977-508-01 TABLE, REEL (T) (BLACK) 3-977-445-01 GEAR, TG8 ARM DRIVING 1-500-144-11 HEAD, FE 3-977-465-01 SPRING, EXTENSION (RVS BRAKE) 3-977-495-01 SHAFT TG2...

  • Page 68: Mechanism Deck Section-2

    7-1-4. MECHANISM DECK SECTION-2 #701 #701 #702 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks X-3947-581-1 BRAKE ASSY,MAIN(T) X-3944-378-1 ROLLER ASSY, GUIDE 3-977-462-01 SPRING,EXTENTION. (MAIN BRAKE) 3-965-178-01 SPRING X-3947-573-1 ARM ASSY, PENDULUM 3-969-632-04 BASE, DRUM X-3947-580-2 BRAKE ASSY, MAIN(S) A-6750-328-E SHUTTLE (T) BLOCK ASSY 3-977-513-02 LEVER, REC PROOF 3-977-501-01 PLATE, LUMINOUS...

  • Page 69: Mechanism Deck Section-3

    7-1-5. MECHANISM DECK SECTION-3 M902 #701 M903 #703 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 3-977-437-01 RETAINER,CAM MOTOR 3-977-455-01 GEAR, LOADING(T) X-3947-584-1 ASSY, REEL DIRECT 3-977-456-03 SPRING, TORSION (LOAD T) 3-977-443-01 WASHER, STOPPER X-3947-579-1 LEVER ASSY, LOADING(T) 3-977-438-01 WORM - WHEEL 3-977-451-01 GEAR, LOADING(S) 3-977-506-01 ARM, LIMITTER SELECTION...

  • Page 70: Electrical Parts List

    DM-84 MA-341 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 •...
  • Page 71 MA-341 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C216 1-126-160-11 ELECT C311 1-163-014-00 CERAMIC CHIP 0.0027uF 10% C217 1-163-037-11 CERAMIC CHIP 0.022uF C312 1-163-016-00 CERAMIC CHIP 0.0039uF 10% C218 1-162-306-11 CERAMIC 0.01uF C313 1-164-232-11 CERAMIC CHIP 0.01uF C220 1-164-232-11 CERAMIC CHIP...
  • Page 72 MA-341 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C510 1-164-004-11 CERAMIC CHIP 0.1uF < CONNECTOR > C511 1-163-038-00 CERAMIC CHIP 0.1uF C512 1-124-584-00 ELECT 100uF CN101 1-779-724-11 CONNECTOR, BOARD TO BOARD 5P C513 1-163-009-11 CERAMIC CHIP 0.001uF CN102 1-779-723-11 CONNECTOR, BOARD TO BOARD 9P...
  • Page 73 MA-341 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < FUSE HOLDER > JR141 1-216-295-00 METAL CHIP 1/10W JR142 1-216-295-00 METAL CHIP 1/10W FH600 1-533-399-31 HOLDER, FUSE JR143 1-216-296-00 METAL CHIP 1/8W FH601 1-533-399-31 HOLDER, FUSE JR144 1-216-296-00 METAL CHIP 1/8W...
  • Page 74 MA-341 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < COIL > Q382 8-729-230-49 TRANSISTOR 2SC2712-YG Q500 8-729-010-05 TRANSISTOR MSB709-RT1 L101 1-414-930-21 INDUCTOR 2.2uH Q502 8-729-216-21 TRANSISTOR 2SA1162-Y L161 1-414-936-21 INDUCTOR 22uH Q561 8-729-010-05 TRANSISTOR MSB709-RT1 L162 1-414-936-21 INDUCTOR 22uH...
  • Page 75 MA-341 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R180 1-216-061-00 METAL CHIP 3.3K 1/10W R316 1-216-109-00 METAL CHIP 330K 1/10W R182 1-216-049-00 METAL CHIP 1/10W R317 1-216-071-00 METAL CHIP 8.2K 1/10W R183 1-216-295-00 METAL CHIP 1/10W R318 1-216-065-00 METAL CHIP...
  • Page 76 MA-341 MF-316 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R561 1-216-037-00 METAL CHIP 1/10W < SWITCH > R562 1-249-407-11 CARBON 1/4W F R563 1-249-408-11 CARBON 1/4W F S101 1-762-108-11 SWITCH, PUSH (1 KEY) R564 1-216-021-00 METAL CHIP 1/10W S102 1-771-155-11 SWITCH, ROTARY (MECHANICAL MODE)
  • Page 77 MF-316 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < RESISTOR > R461 1-216-013-00 METAL CHIP 1/10W R462 1-216-029-00 METAL CHIP 1/10W R463 1-216-089-00 METAL CHIP 1/10W R491 1-216-295-00 METAL CHIP 1/10W R492 1-216-295-00 METAL CHIP 1/10W R493 1-216-022-00 METAL CHIP...
  • Page 78 SLV-772HF/779HF Sony Corporation 99B1635-1 Printed in Japan ©1999.2 Home A&V Products Company 9-921-716-11 Published by Quality Assurance Dept. — 98 — (Shinagawa)

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