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Aiwa HV-MC90 Service Manual

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HV-MC90
KE
SIMPLE-2
SERVICE MANUAL
BASIC VIDEO MECHANISM
VIDEO CASSETTE RECORDER
: D33Y1-2HD/PAL(6721RF0412A)
A par t of contents is adequate.
Re-issuing is under r equest.
S/M Code No. 09-019-358-4N1

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Summary of Contents for Aiwa HV-MC90

  • Page 1 HV-MC90 SIMPLE-2 SERVICE MANUAL BASIC VIDEO MECHANISM VIDEO CASSETTE RECORDER : D33Y1-2HD/PAL(6721RF0412A) A par t of contents is adequate. Re-issuing is under r equest. S/M Code No. 09-019-358-4N1...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ..............3 15. Support CST ..............64 ACCESSORIES LIST .............. 4 16. Base Assembly P4 ............64 DISASSEMBLY INSTRUCTIONS ..........5 17. Opener Lid ..............64 SERVICE POSITION ............... 6 18. Arm Assembly T/up ............64 VCR TEST TAPE INTERCHANGEABILITY TABLE ....

  • Page 3: Specifications

    SPECIFICATIONS Video recording system Rotary 2 head helical scanning system Video head 2 heads Video signal system PAL/MESECAM color signal, 625 lines, 50 fields NTSC color signal, 525 lines, 60 fields Usable cssettes VHS video cassettes Recording/playback time PAL/MESECAM SP: 5 hours max. with E-300 tape. LP: 10 hours max.

  • Page 4: Accessories List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC S8-35R-P00-66W INSTRUCTION ASSY S7-11R-2P0-36A RC UNIT,P8(CLA112TW HA7IA) S8-50R-CAA-260 CABLE,COAXIAL 1200M/M...

  • Page 5: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS -1/1 1. Top Case Removal 4. Main C.B. Removal (see Fig. 3) 1) Remove 4 screws holding the top case. 1) Remove 2 screws B holding the panel assy, distri-butor. 2) Release 5 tabs, and then simultaneously lift the panel assem- 2.

  • Page 6: Service Position

    SERVICE POSITION -1/1 To set the mechanism to the service position in active status: Insert a spacer as shown below: The service position can be set in the stable status without any defective contact. MAIN C.B MECHA SPARSER 60mm MAIN C.B D33 MECHANISM REAR PANEL SPARSER...

  • Page 7: Vcr Test Tape Interchangeability Table

    VCR TEST TAPE INTERCHANGEABILITY TABLE -1/1 There are two types of the new allgnment tape CH-1B (for NTSC) and CH-2 (for PAL). On each tape four signals (1)-(4) are recorded for the times and in the order shown below. (1) : 8min. → (2) : 2min. → (3) : 5min. → (4) : 5min. The TTV-MP1 (for M-PAL), TTV-MS1 (for MESECAM) and TTV-S1 (for SECAM) allgnment tapes have the same contents as the previous tapes.

  • Page 8: Electrical Main Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC MAIN S BD 101 87-070-173-010 DIODE,S1WBA60...
  • Page 9 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC MAIN SC-N22-3AK-948 CAP,0.022UF 50V MAIN SC-N10-20K-518 CAP,1000P-50V...
  • Page 10 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC MAIN S IC 501 SI-MCR-NE0-07B IC,UPD784927GF-214-3BA...
  • Page 11 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC MAIN SR-D27-01F-608 RES,2.7K-1/6W MAIN SR-D56-01F-608 RES,5.6K-1/6W MAIN SR-D56-01F-608 RES,5.6K-1/6W...
  • Page 12 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC MAIN SR-D10-01F-608 RES,1.0K-1/6W MAIN SR-D10-01F-608 RES,1.0K-1/6W...
  • Page 13 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC MAIN S8-740-00T-000 WIRE,COPPER 0.6 ROLL MAIN S8-740-00T-000 WIRE,COPPER 0.6 ROLL...
  • Page 14 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC MAIN S8-740-00T-000 WIRE,COPPER 0.6 ROLL MAIN S8-740-00T-000 WIRE,COPPER 0.6 ROLL...
  • Page 15 Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC MAIN S8-740-00T-000 WIRE,COPPER 0.6 ROLL MAIN S8-740-00T-000 WIRE,COPPER 0.6 ROLL...

  • Page 16: Transistor Illustration

    TRNSISTOR ILLUSTRATION -1/1 E C B E C B E C B SRA2203 KTA1273 2SA1980 SRC1203 KTC3205 2SC5343 2SC5344 -16-...

  • Page 17: Wire Harness Diagram

    WIRING HARNESS DIAGRAM -1/1 PMD01 PMD01 DRUM M.GND MOTOR MCOM PMC01 PMC01 MOTOR GND I-LIMIT CAPSTAN CAP CONTROL 12VA MOTOR CAP REV "H" 5.3VA P3D02 P3D02 CTL(+) CTL(-) A/E(-) MAIN C.B A/E(+) HEAD A.REC A.PB MS501 MS501 MODE S1 MODE S2 MODE SW MODE S3 MODE S4...

  • Page 18: Block Diagram

    BLOCK DIAGRAM -1/4 (POWER SECTION) -18-...
  • Page 19 BLOCK DIAGRAM - 2/4 (VIDEO SECTION) ¥ PB Mode SYSTEM CONTROL SECTION X302 X301 3.58MHz 4.43MHz MD3M1 (MODULATOR) V.H.SW CONTROL C-CCD SYSTEM CONTROL X-tal Serial Cont SECTION V.ENV VCO/OSC interface CLOCK Drive 5 V.IN HEAD1 HEAD2 PB-AMP PB CH2 SP CH2 Y-CCD FROM CYL.HEAD...
  • Page 20 BLOCK DIAGRAM -3/4 (AUDIO SECTION) IC301 HA118717F VIDEO/AUDIO PROCESSOR Q304-Q306 Q307 REC "H" JK3M1 AUDIO SYSTEM CONTROL SECTION AUDIO REC/PB AUDIO HEAD PB EQ MD3M1 (MODULATOR) A.IN Q302,Q303 FL301,Q301 BIAS AUDIO :AUDIO(REC) SIGNAL ERASE SYSTEM HEAD REC "H" CONTROL :AUDIO(PB) SIGNAL SECTION FULL ERASE...
  • Page 21 BLOCK DIAGRAM - 4/4 ( SYSTEM CONTROL SECTION) LOADING P3D02 MOTOR CTL(+) CTL(-) CAPSTAN HEAD MOTOR MOTOR DRIVE DRUM MOTOR AUDIO/VIDEO SECTION RESET -214-3BA PG.ADJ SYSTEM CONTROL NTSC P.B u-COM SW5T10-SW5T13 SW5T1,SW5T3-SW5T6 POWER SECTION TSOP2838WE1 (REMOTE SENSOR) -21-...

  • Page 22: Schematic Diagram 1. Power

    SCHEMATIC DIAGRAM - 1/3 (POWER SECTION) MAIN(POWER SECTION)C.B 22uH C129 SRA2203 0.022u HOT GND 1N5822 22uH 470pF PHOTO 5.6K AC INPUT HOT CIRCUIT NOTES) Warning NOTES) Symbol denotes AC ground. NOTES) Parts that are shaded are critical NOTES) With respect to risk of fire or NOTES) Symbol denotes DC chassis ground.

  • Page 23: Audio/Video

    SCHEMATIC DIAGRAM - 2/3 (AUDIO/VIDEO SECTION) MAIN(AUDIO/VIDEO SECTION)C.B VIDEO AUDIO 2SA1980G BUFFER SYSTEM CONTROL SECTION VIDEO/AUDIO PROCESSOR C3M3 0.01u (MODULATOR) POWER SECTION L310 100uH CYL. MD3M1 HEADS AERIAL /ANT Sharpness control RF. OUT SYSTEM CONTROL SECTION WAVEFORM 2SC5344Y :PB VIDEO SIGNAL :PB CHROMA SIGNAL :PB Y SIGNAL :REC VIDEO SIGNAL...

  • Page 24: System Control

    SCHEMATIC DIAGRAM - 3/3 (SYSTEM CONTROL SECTION) MAIN(SYSTEM CONTROL SECTION)C.B 10/11 11/11 PAUSE/STILL PLAY / F.FWD REW/ 560uH SYSYEM POWER STOP/EJECT STANDBY/ON MOTOR DRIVE DRUM MOTOR TOH-30M05G1 LOADING MOTOR 9/11 4/11 TSOP2838WE1 AUDIO/VIDEO (REMOTE SENSOR) SECTION 5/11 -214-3BA SYSTEM 3/11 CONTROL u-COM 6/11...

  • Page 25: Wiring 1. Main C.b

    WIRING - 1/1 (MAIN C.B) JK3M1 AC200 ~ 240V 50Hz AUDIO VIDEO PMC01 PMD01 P3D02 PML01 P3D01 MAIN C.B LOADIG CAPSTAN MOTOR DRUM MOTOR AUDIO/CTR CYL. HEADS HEADS MOTOR PCM01 PDM01 MD3M1 AERIAL /ANT RF. OUT P3D03 FULL ERASE HEAD V.H/S MODE SW SW5T6...

  • Page 26: Audio/Video Section

    WAVEFORMS -1/2 AUDIO/VIDEO SECTION IC301 Pin IC301 Pin IC301 Pin 18, 21, IC301 Pin 18 21 23 100mV/10msec DIV 100mV/10msec DIV 100mV/10msec DIV 200mV/10msec DIV VV/EE VV/EE (Main De-Emphasis out) (Main De-Emphais Clamp Drive IN Pin (VIDEO IN) Peacking) Y-out(to 1H CCD) Pin Y-out(from 1H CCD) Pin IC301 Pin IC301 Pin...

  • Page 27: System Control Section

    WAVEFORMS -2/2 SYSTEM CONTROL SECTION IC501 Pin IC501 Pin IC501 Pin IC501 Pin IC501 Pin REC/PB QUE/REV REC/PB IC501 Pin IC501 Pin IC501 Pin IC501 Pin REC/PB REC/PB REC/PB -27-...

  • Page 28: Voltage Chart 1. Power/Nicam Section

    VOLTAGE CHART -1/2 1. POWER SECTION IC101 IC103 Gate Anode Cathode 0.009 0.01 IC103 17.4 17.6 TRANSISTOR Emitter Collector Base IC102 Q152 12.9 13.1 12.8 Q153 Q155 Q156 17.6 17.4 2. AUDIO/VIDEO SECTION IC301 REC PIN TRANSISTOR Emitter Collector Base Q301 0.25 4.78 0.25 0.43...

  • Page 29: System Control

    VOLTAGE CHART -2/2 3. SYSTEM/CONTROL SECTION IC501 REC PIN REC PIN REC PIN 5.16 5.16 1.75 5.17 5.17 5.17 5.17 5.17 2.57 5.17 5.17 5.17 2.57 5.17 5.17 2.58 2.58 2.58 2.58 68 5.14/0 5.14/0 5.17 5.17 1.27 2.58 2.58 2.58 2.58 2.92 5.17...

  • Page 30: Adjustment

    ADJUSTMENT -1/1 Test Equipment 1. Servo Adjustment • Oscilloscope • + Driver • Digital Multimeter 1) PG Adjustment • Video Signal Generator • Test Tape (SP) • Monitor Scope • Level Meter • Recording Tape • Power Supply MODE MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION 416µsec ±...

  • Page 31: Ic Block Diagram

    IC BLOCK DIAGRAM -1/1 VREG(5V) MCOM ROTOR U IN THERMAL SHUT-DOWN POSLTION DET. CIRCUIT V IN CIRCUIT W IN MASK CIRCUIT WAKE-UP TIMING SOFT CONTROL CONTROL SWITCHING CIRCUIT CIRCUIT DRIVE CIRCUIT U OUT V OUT W OUT 8 DIVIDER PC OUT VCO IN 1kΩ...

  • Page 32: Ic Description

    IC DESCRIPTION -1/1 (µPD784927GF-214-3BA) -1/3 Pin No. Pin Name Description DFG MON Not connected DPG MON Not connected CFG MON Not connected CTL MON Not connected OSD ENA Not connected OSD CLOCK Not connected OSD DATA Not connected Not connected DRUM PWM Drum PWM control CAP.
  • Page 33 IC DESCRIPTION -1/1 (µPD784927GF-214-3BA) -2/3 Pin No. Pin Name Description A.REPEAT LED POWER LED CST-IN LED Not connected Not connected CAP.REV. “H” A.MUTE “H” Not connected LD (+) LD (-) I-LIMIT REC “H” CAP ADJ DRUM ADJ Not connected OPTION PWR FAIL 62 ~ 64 Not connected...
  • Page 34 IC DESCRIPTION -1/1 (µPD784927GF-214-3BA) -3/3 Pin No. Pin Name Description CTL OUT2 VREFC AVSS1 AVDD1 CFG AMP OUT CFG AMP IN S-REEL SENSOR T-REEL SENSOR C.SYNC -34-...

  • Page 35: Electrical Troubleshooting

    ELECTRICAL TROUBLESHOOTING -1/13 1. Power Circuit(SMPS) (1) No 5.3VA. No 5.3VA. Replace the F101 Is the F101 normal? (Use the same Fuse). Is the BD101 normal? Replace the BD101. Is the R101 normal? Replace the R101. Does the oscillation waveform appear at Is Vcc(about 15~19V) permittable at the the IC101 Pin 1? IC101 Pin 4?
  • Page 36 ELECTRICAL TROUBLESHOOTING -2/13 7. Power Circuit(SMPS) (2) No 13VA. No 13VA. Does 5.3VA work normally? Check whether 5.3VA is out of order. Is the D109 normal? Replace the D109. Check 13VA/12VA Line of the Main PCB short. (3) No 12VA. No 12VA.
  • Page 37 ELECTRICAL TROUBLESHOOTING -3/13 7. Power Circuit(SMPS) (4) No 5V. No 5V. Is 5.3VA put into the Q153/Q155 collector? Is the Q156 Base “H”? Check the Power Control. Is about 5.5V put into the Does the 13VA Line work normally? Q153/Q155 Base? Check the 13VA Line.
  • Page 38 ELECTRICAL TROUBLESHOOTING -4/13 2. SERVO CIRCUIT (1) Unstable Video in PB MODE Unstable Video in PB Mode. Does the Noise level of the screen change periodically? Do the CTL pulses appear Is adjusting the height of at the IC501 Pin 89? the CTL Head accurate? Does the CFG waveform Readjust the height of the...
  • Page 39 ELECTRICAL TROUBLESHOOTING -5/13 2. SERVO CIRCUIT (3) When the Capstan Motor doesn’t run, When the Capstan Motor doesn’t run, Refer to “SMPS(CAPSTAN/12Volt) Does 12VA appear at the PMC01? Trouble Shooting”. Does 2.8V appear at the PMC01 Pin 4? Check the PMC01 and the Capstan Does the PWM signal appear at the IC501 Pin 10? Motor Ass’y.
  • Page 40 ELECTRICAL TROUBLESHOOTING -6/13 3. Y/C CIRCUIT (1) No Video in EE Mode, No Video in EE Mode Check the Video Input Does the Video signal Jack. appear at the IC301 Pin 31? (Line In Jack) Is 5V applied to the IC301 Check the 5V Line.
  • Page 41 ELECTRICAL TROUBLESHOOTING -7/13 3. Y/C CIRCUIT (2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode, Is 5V applied to the IC301 Check the line of the 5.3V Pins 12, 36, 61, 67, 90, 96? Line. (Power Circuit) Is the I C Bus siganl applied Refer to ‘SYSTEM I...
  • Page 42 ELECTRICAL TROUBLESHOOTING -8/13 3. Y/C CIRCUIT (3) When the C(Color) signal doesn’t appear on the screen in PB Mode, Is 5V applied to the IC301 Check the line of the 5.3V Pins 12, 36, 61, 67, 90, 96? Line. (Power Circuit) Does the Color signal Does the X301(4.43MHZ) Replace the X301 or...
  • Page 43 ELECTRICAL TROUBLESHOOTING -9/13 3. Y/C CIRCUIT (4) When the Video signal doesn’t appear on the screen in REC Mode, Is the EE signal normal? Check EE Mode. Is 5V applied to the IC301 Check the line of the 5.3V Pins 12, 36, 61, 67, 90, 96? Line.(Power Circuit) Does PB Mdoe operate Check PB Mode.
  • Page 44 ELECTRICAL TROUBLESHOOTING -10/13 4. AUDIO CIRCUIT (1) No sound in EE Mode No sound in EE Mode. No sound. Check the line of the 5V Line. Is 5V applied to the IC301 Pin 96? (Power Circuit) Is the Audio signal applied to the Check the path of LINE/AUDIO.
  • Page 45 ELECTRICAL TROUBLESHOOTING -11/13 3. Y/C CIRCUIT (3) No sound in REC Mode, No sound in REC Mode, Sound is not recorded. Refer to “No sound in PB Is Playback O.K.? Mode,”. Is the Audio signal applied Check the path of Line to the IC301 Pin 9? Audio.
  • Page 46 ELECTRICAL TROUBLESHOOTING -12/13 5. SYSTEM/KEY CIRCUIT (1) AUTO STOP Auto Stop Does the SW30 waveform Check the Drum Motor appear at the IC501 signal. Pin 24? Do T/UP Reel Pulses Do the T-UP Reel Pulses Does 5.0V appear at the appear at the Q514 appear at the IC501 Pin 99? RS501?
  • Page 47 ELECTRICAL TROUBLESHOOTING -13/13 (3) KEY doesn’t working KEY doesn’t working. Is 5VA applied to the IC501 Refer to “SMPS 5.3VA Pin 14? Trouble Shooting”. Does LED display change Replace the defective when a function button is switches. pressed? -47-...

  • Page 48: Mechanical Exploded View 1/1

    MECHANICAL EXPLODED VIEW -1/1 HD3M1 LED502 -48-...

  • Page 49: Mechanical Main Parts List 1/1

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC S1-10R-012-8U0 CASE,TOP S2-10R-002-3F0 FRAME,MAIN S9-30R-010-2A0 HOLDER LED...
  • Page 50 COLOR NAME TABLE Basic color symbol Color Basic color symbol Color Basic color symbol Color Black Cream Orange Green Gray Blue Transparent Blue Gold Pink Silver Titan Silver Brown Violet White Transparent White Yellow Transparent Yellow Metallic Blue Light Blue Transparent Green Dark Blue Transparent Orange...

  • Page 51: Mechanism Exploded View 1/3

    MECHANISM EXPLODED VIEW -1/3 -51-...

  • Page 52: Mechanism Main Parts List 1/3

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC S1-41R-000-2C0 CHASSIS ASSY D33Y S3-01R-003-2A0 PLATE ASSY TOP S8-10R-006-8A0 BRACKET SIDE(L)

  • Page 53: Mechanism Exploded View 2/3

    MECHANISM EXPLODED VIEW -2/3 -53-...

  • Page 54: Mechanism Main Parts List 2/3

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC S7-23R-D10-4B0 DRUM ASSY,SUB D33-2CH S6-80R-B00-4A0 MOTOR,DRUM GVD-L33Y S6-80R-B00-3A0 MOTOR,DRUM VH4300...

  • Page 55: Mechanism Exploded View 3/3

    MECHANISM EXPLODED VIEW -3/3 -55-...

  • Page 56: Mechanism Main Parts List 3/3

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC S1-41R-000-2C0 CHASSIS ASSY D33Y S4-00R-000-5A0 BELT CAPSTAN S6-80R-A00-1A0 MOTOR(MECH) CAPSTAN F2QSB53...

  • Page 57: Other Parts List

    Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers. UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL HV-MC90 KEJC S2-920-53A-000 BAG SOFT(VCP) S5-340-50A-000 BATTERY S5-01R-343-0K0 BOARD ASSY,CLA112TW NA7IA...

  • Page 58: Deck Mechanism Parts Locations

    DECK MECHANISM PARTS LOCATIONS • Top View Pracedure Fig- Part Fixing Type Starting 1 Drum Assembly 3 Screws , Cap FPC A-1 2 Plate Assembly Top Two Hooks 3 Holder Assembly CST Chassis Hole Bracket Side 'L' 5 6 Bracket Assembly Door 4 Guide CST 2 Hooks...

  • Page 59: Deck Mechanism Disassembly

    DECK MECHANISM DISASSEMBLY (S2) Stator (S2) (S3) Drum Motor (S3) Rotor Drum Sub Assembly (Fig. A-1-1) Drum FPC (S1) (For Jog Shuttle Models) (S1) (S1) Optional Parts Holder FPC or Holder FPC or Holder FPC (only for 2HD Models) (only for 4HD-Mono Models) (only for 4HD-Hi-Fi Models) Cap FPC (Fig.
  • Page 60 DECK MECHANISM DISASSEMBLY Plate Assembly Top (Fig. A-2-1) Holder Assembly CST Lever Stopper(R) (Fig. A-2-2) Arm Assembly F/L (Fig. A-2-6) Arm F/L Lever Assembly S/W (Fig. A-2-7) (S4) (H5) Bracket Side (L) (S4) (Fig. A-2-4) Groove Gear Rack F/L Groove Bracket (For Jog Shuttle Models) Assembly Door...

  • Page 61: Plate Assembly Top

    DECK MECHANISM DISASSEMBLY 2. Plate Assembly Top (Fig. A-2-1) 1) Unhook the (H1) and separate the Left Side. 2) Unhook the (H2) and lift up the Plate Assembly Top. NOTE (1) When reassembling, confirm (A),(B) Part of the Plate (H4) Assembly Top is inserted to the (L),(R) Grooves of the (H3) Bracket Side(L) and Bracket Assembly Door.

  • Page 62: Arm Assembly Cleaner

    DECK MECHANISM DISASSEMBLY Arm Assembly Cleaner (Fig. A-3-1) (S5) Base Assembly A/C Head ( H1) (Fig. A-3-3) (Fig. A-3-2) Head F/E Fig. A-3 (For Jog Shuttle Models) NOTE (1) Place the Spring Lever S/W of the above (No.1) as 8. Arm Assembly Cleaner(Fig. A-3-1) original position.

  • Page 63: Brake Assembly S

    DECK MECHANISM DISASSEMBLY Spring S Brake Brake Assembly S (Fig. A-4-1) Arm Assembly Tension Reel T Spring Tension (Fig. A-4-5) Band Assembly Spring T Brake (Fig. A-4-3) Tension Reel S Brake Assembly T (Fig. A-4-2) (Fig. A-4-4) (For Jog Shuttle Models) Fig.

  • Page 64: Support Cst

    DECK MECHANISM DISASSEMBLY Opener Lid (Fig. A-5-3) Arm Assembly T/up (Fig. A-5-4) Assembly Pinch Base Assembly P4 (Fig. A-5-5) Support CST (Fig. A-5-1) (Fig. A-5-2) Fig. A-5 15. Support CST (Fig. A-5-1) NOTE 1) Break away the (A) part shown above Fig. A-5-1 from (1) When reassembling, confirm the opener lid is placed on the Embossing of the Chassis in the clockwise direction, the Hook(H1) of the Arm Assembly T/UP as below figure.

  • Page 65: Belt Capstan/Motor Capstan

    DECK MECHANISM DISASSEMBLY Belt Capstan (Fig. A-6-1) Motor Capstan Washer(W1) Clutch Assembly D33-K (Fig. A-6-3) (Fig. A-6-2) Washer(W2 ) Optional Parts Gear H-Up/D-K Gear Up/D-K Lever F/R (For Hi-Rewind Models) (For Normal Models) (Fig. A-6-4) Hook(H1) Spring Up/D Brake Assembly Capstan (For 4HD Models) (Fig.

  • Page 66: Bracket Assembly Jog

    DECK MECHANISM DISASSEMBLY Brake Assembly Capstan Hole (A)+(B) Barke Assembly Capstan Gear Cam (H2) (For 4HD Models) Spring Capstan (Fig. A-7-4) Hole (A) Guide Rack F/L (H1) Barke Assembly Jog (S4) (S4) (For Jog Shuttle Models) (Fig. A-7-2) Gear Rack F/L (Fig.

  • Page 67: Gear Drive/Gear Cam/Gear Connector

    DECK MECHANISM DISASSEMBLY Washer (W1) Gear Drive (Fig. A-8-1) Gear Cam Hole (B) (Fig. A-8-2) Brake Assembly Capstan (For 4HD Models) Gear Connector Hole (A) (Fig. A-8-3) Gear Connector Hole (A')+(A) Hole (B') Hole (A') Chassis Bracket Assembly L/D Motor Hole (B')+(B) (Fig.

  • Page 68: Gear Sector

    DECK MECHANISM DISASSEMBLY Washer (W1) Gear Sector (Fig. A-9-1) (S4) Base Tension Plate Slider (Fig. A-9-2) (Fig. A-9-3) Lever Tension (Fig. A-9-4) (For Jog Shuttle Models) Fig. A-9 29. Gear Sector (Fig. A-9-1) NOTE 1) Remove the Washer(W1) and lift up the Gear Sector. 30.

  • Page 69: Gear Assembly P3/Gear Assembly P2

    DECK MECHANISM DISASSEMBLY (Fig. A-10-1) Gear Assembly P3 Gear Assembly P3 Gear Assembly P2 (Fig. A-10-2) Gear Assembly P2 Chassis Optional Parts Base Assembly P2 Arm Assembly Idler Arm Assembly Idler Jog (Fig. A-10-4) (For Normal Models) For Jog Shuttle Models (Fig.

  • Page 70: Tools And Fixtures For Service

    DECK MECHANISM DISASSEMBLY • Tools and Fixfures for Service 1. Cassette Torque meter 2. Alignment tape 3. Torque gauge SRK-VHT-303(Not SVC part) (See figure below) 600g.Cm ATG 4. Torque gauge adaptor 5. Post height adjusting driver 6. + Type driver (∅ 5) Parts No: SV-TGO-030-000 (SMALL) SV-TGO-020-000 (LARGE)

  • Page 71: Deck Mechanism Adjustment

    DECK MECHANISM ADJUSTMENT 1.Mechanism Alignment Position Check Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected. Test Conditions (Mechanism Test Equipment/ Fixture Check Point Condition) • Mechanism and Mode Switch Position • Blank tape •...

  • Page 72: Preparation For Adjustment

    DECK MECHANISM ADJUSTMENT 2. Preparation for Adjustment (To set the Loading the Cassette without Tape. Cover the Holes of the End Sensors at the both sides of Deck Mechanism to the Loading state the Bracket Side(L) and Bracket Assembly Door to without inserting a Cassette Tape).

  • Page 73: Guide Roller Height Adjustment

    DECK MECHANISM ADJUSTMENT 4.Guide Roller Height Adjustment Purpose: To regulate the Height of the Tape so that the Bottom of the Tape runs along the Tape Guide Line on the Lower Drum. 4-1. Preliminary Adjustment Test Equipment/ Fixture Test Conditions (Mechanism Condition) Adjustment Point •...

  • Page 74: Audio/Control (A/C) Head Adjustment

    DECK MECHANISM ADJUSTMENT 5. Audio/Control (A/C) Head Adjustment Purpose: To insure that the Tape passes accurately over the Audio and Control Tracks in exact Alignment in both the Record and Playback Modes. 5-1. Preliminary Adjustment (Height and Tilt Adjustment) Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape. Test Equipment/ Fixture Test Conditions (Mechanism Condition) Adjustment Point...

  • Page 75: Confirm That The Tape Passes Smoothly Between The Take-Up Guide And Pinch Roller

    DECK MECHANISM ADJUSTMENT 5-2. Confirm that the Tape passes smoothly then slowly turn the Tilt Adjustment Screw(C) in the Counterclockwise direction. between the Take-up Guide and Pinch Roller(using a Mirror or the naked eye). After completing Step 5-1.(Preliminary Adjustment), NOTE: check that the Tape passes around the Take-up Guide and Pinch Roller without Folding or Curling at the Top Check the RF Envelope after adjusting the A/C Head, if...

  • Page 76: Adjustment After Replacing Drum Assembly (Video Heads)

    DECK MECHANISM ADJUSTMENT 7. Adjustment after Replacing Drum Assembly (Video Heads) Purpose: To correct for shift in the Roller Guide and X value after replacing the Drum. Test Conditions Test Equipment/ Fixture Connection Point Adjustment Points (Mechanism Condition) • CH-1: PB RF Envelope •...

  • Page 77: Maintenance/Inspection Procedure

    MAINTENANCE/INSPECTION PROCEDURE 1 Check before starting repairs The following faults can be remedied by cleaning and oiling. Check the needed lubrication and the conditions of cleanliness in the unit. Check with the customer to find out how often the unit is used, and then determine that the unit is ready for inspection and maintenance.

  • Page 78: Required Maintenance

    MAINTENANCE/INSPECTION PROCEDURE 4. Supplies Required for Inspection and 2. Required Maintenance Maintence The recording density of a VCR(VCP) is much higher than that of an audio tape recorder. VCR(VCP) components must (1) Grease : Kanto G-311G (Blue) or equivalent be very precise, at tolerances of 1/1000mm, to ensure (2) Isopropyl Alcohol or equivalent compatiblity with other VCRs.

  • Page 79: Greasing

    MAINTENANCE/INSPECTION PROCEDURE (2) Periodic greasing 5-2) Greasing Grease specified locations every 5,000 hours. (1) Greasing guidelines Apply grease, with a cleaning patch. Do not use excess 1) Loading Path Inside & Top side 5) Lever Tension Groove grease. It may come into contact with the tape transport 2) Shaft 6) Clutch Assembly D33 Shaft or drive system.

  • Page 80: Mechanism Troubleshooting Guide

    MECHANISM TROUBLESHOOTING GUIDE 1.Deck Mechanism Auto REW doesn't work. Is the output of END sensor of supply side "H"? "H": more than 3.5V "L": less than 0.7V~1V Is the Vcc. voltage of End Check the syscon power. sensor 5V? Replace End sensor. Is the voltage across IR LED Replace LED.
  • Page 81 MECHANISM TROUBLESHOOTING GUIDE AUTO STOP. (PLAY/CUE/REV) Check aligment positions (page 71) Check spring Pinch. In Play/Cue/Rev is the pinch roller in contact with the capstan Is the output of DFG, DPG OK? Replace Drum Motor. shaft. Are there T/up and supply reel Check Servo, Syscon.
  • Page 82 MECHANISM TROUBLESHOOTING GUIDE In PB mode Tape Presence not sensed. Is the Pinch Roller attached Check Alignment positions to the Capstan Motor Shaft? (page 94) Does the T/Up Is the Belt ok? Replace the Belt. Reel turn? Check the clutch and the Idler Does the Capstan Motor turn? Assembly.

  • Page 83: Front Loading Mechanism

    MECHANISM TROUBLESHOOTING GUIDE 2. Front Loading Mechanism Cassette cannot be inserted. Is the Lever Switch Spring Replace or add the Does the Lever Switch work? damaged or omitted? Lever Switch Spring. Does the F/L switch work Replace F/L Switch. normally? Is the Vcc of Main P.C.Board Check syscon circuit.
  • Page 84 MECHANISM TROUBLESHOOTING GUIDE Cassette will not load. Does the CST insert? Does the opener Lid work? Replace the Opener Lid. Does the Gear Rack F/L work? Replace the Rear Rack F/L. Does the Opener Door work? Does the Arm Assembly F/L work? Is the opener Door assembled correctly? Does the L/D Motor work? Replace the Arm Assembly F/L.
  • Page 85 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 0251431 Printed in Singapore...

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