Aiwa HV-FX7800 Service Manual
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Aiwa HV-FX7800 Service Manual

Stereo video cassette recorder
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HV-FX7800
SERVICE MANUAL
STEREO VIDEO CASSETTE RECORDER
HV-FX7800
HV-FX5850
S/M Code No. 09-016-357-3N4
HV-FX5850
BASIC VIDEO MECHANISM
: D33Y1-4HF/PAL(6721RF0450A)
EH
EH

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Summary of Contents for Aiwa HV-FX7800

  • Page 1 HV-FX7800 HV-FX5850 HV-FX7800 HV-FX5850 SERVICE MANUAL BASIC VIDEO MECHANISM STEREO VIDEO CASSETTE RECORDER : D33Y1-4HF/PAL(6721RF0450A) S/M Code No. 09-016-357-3N4...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ..............3 13. Arm Assembly Tension ............ 72 ACCESSORIES LIST .............. 4 14. Reel S & Reel T .............. 72 DISASSEMBLY INSTRUCTIONS ..........5 15. Support CST ..............73 SERVICE POSITION ............... 6 16. Base Assembly P4 ............73 VCR TEST TAPE INTERCHANGEABILITY TABLE ....

  • Page 3: Specifications

    SPECIFICATIONS Video recording system Rotary 2 head helical scanning system Horizontal resolution 240 lines (SP) Video S/N 43 dB (SP) Video head Double azimuth 4 heads Audio track 3 tracks Tuner system Frequency synthesized tuner TV system (Hi-Fi sound 2 tracks, Normal sound 1 track) Video signal system MESECAM/PAL color signal, Audio input...

  • Page 4: Accessories List

    INSTRUCTION ASSY CFA929MP<78> 1 S8-35R-P00-66U INSTRUCTION ASSY CFA911MP<58> 2 S7-11R-1P0-33D REMOTE CONTROLLER ASSEMBLY(CFA<78> 2 S7-11R-1P0-33J REMOTE CONTROLLER ASSY,CFA910T<58> 3 S8-50R-CAA-260 CABLE,COAXIAL 1200M/M TYPE MODEL NAME SUFFIX 4 S8-51R-P00-03F CABLE ASSY,RF/SCART/RCA USI <78> HV-FX7800 5 S6-11R-2G0-01A PLUG ASSY 2WAY RED/WHITE <58> HV-FX5850...

  • Page 5: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS -1/1 1. Top Case Removal 4. Mechanism Removal (see Fig. 3) 1) Remove 4 screws holding the top case. 1) Disconnect the drum FF cable from the connector (PMD01) on the Main C.B. 2. Panel Front Removal (see Fig. 1) 2) Disconnect the ACE head FF cable from the connector (P3D02) 1) Release 7 tabs, and then remove the panel front.

  • 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 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

    ELECTRICAL MAIN PARTS LIST -1/3 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C333 87-015-681-080 CAP,E 10-16V C337 87-015-698-080 CAP,E 4.7-50V SI-CS2-416-00B IC,CAT24W16P C339 87-015-698-080 CAP,E 4.7-50V SI-FA8-082-00A IC,FAN8082 8P C346 87-015-684-080 CAP,E 47-16V SI-MCR-HI0-08A IC,HD6432197A37FX C348 87-015-695-080 CAP,E 1.0-50V...

  • Page 9: Electrical Main Parts List

    S5-562-82C-000 SW,SKQNQED ALPS 5MM SW911 S5-562-82C-000 SW,SKQNQED ALPS 5MM ! ! ! ! ! R101 S6-140-07A-000 RES,CEM 2.7/2W R104 SR-S56-02K-619 RES,56K-2W R109 SR-S03-50K-619 RES,0.35-2W TYPE MODEL NAME SUFFIX R/C5F1 S7-12R-293-8GA REMOCON RECEIVER <78> HV-FX7800 RS501 S5-00R-AB0-02A SENSOR GP1S566 <58> HV-FX5850...

  • Page 10: Transistor Illustration

    TRNSISTOR ILLUSTRATION -1/1 E C B E C B E C B E C B SRA2203 2SA1980 KTC2804 KTA1273 2SC5343 SRC1203 KTC3205 2SC5344 KSR1003 KTA1268 SRC1201 -10-...

  • Page 11: Wire Harness Diagram

    WIRE HARENESS DIAGRAM -1/1 P7M01 PMD01 PDM01 A.MUTE "H" D.CTL TU.A.L M.GND TU.A.R DRUM BBE A.OUT.R MOTOR 12.3VA BBE A.LOUT NICAM/A2 C.B P7M02 PMC01 PCM01 DATA MOTOR GND I-LIMIT CAPSTAN CAP CTL 13VA MOTOR CAP REV "L" TU.MONO.AUD 5.1V <7800> P3D02 CTL(+) CTL(-)

  • Page 12: Block Diagram

    BLOCK DIAGRAM -1/6 (POWER SECTION) -12-...
  • Page 13 BLOCK DIAGRAM -2/6 (AUDIO/VIDEO SECTION) MOD.A.OUT POWER/ BUF.V.IN TUNER TU.V.IN SECTION A.MUTE "H" IIC CLK AUDIO SYSTEM IIC DATA CONTROL/ OUT(R) A.ENV SERVO/OSD IC801 SECTION LP REC MUTE "H" OUT(L) TDA9605H IC901 A.H/SW Hi-Fi AUDIO PROCESS MM1443XJ INPUT SELECT SW 33 SCL JK901(1/2) 32 ADA...
  • Page 14 BLOCK DIAGRAM -3/6 (VIDEO SECTION) IC301 LA71598M AUDIO/VIDEO Q304 PROCESSOR MAIN C. COMB CONV LP ’A’ PB DELAY Q303 C LPF LP ’B’ PB SP ’B’ PB DE EMP SP ’A’ PB PB FM <7800> IC7V1 LC74793 V. ENV DOUBLE VPS/PDC DECODER PB EQ SERIAL...
  • Page 15 BLOCK DIAGRAM -4/6 (NORMAL AUDIO SECTION) IC301 LA71598HM AUDIO/VIDEO PROCESS Hi-Fi AUDIO/ FL301,Q311 SCART SECTION AUTO BIAS CONTROL LINE BIAS Q307 MUTE AUDIO IN 1 AUDIO RECPB MONO A.IN HEAD :REC AUDIO SIGNAL IC301 LA71598HM AUDIO/VIDEO PROCESS AUDIO RECPB HEAD EQ AMP Q308, LINE...
  • Page 16 BLOCK DIAGRAM -5/6 (TUNER, NICAM/A2 SECTION) -16-...

  • Page 17: Block Diagram

    BLOCK DIAGRAM -6/6 (SYSTEM CONTROL/SERVO/OSD SECTION) MAIN (SYSTEM CONTORL/SERVO SECTION)C.B <7800> 9MT168GK OPTB'H' 72,73 LOADING Hi-Fi AUDIO/ MOTOR UPD16311GC-AB6 SCART SECTION VFD DRIVER 83,107 JK903 12.3V AUDIO-G DRUM MOTOR JK902 POWER/ PDM01 AUDIO-D ENTREE(AV 3) TUNER SECTION JK901 -19VG(FD+) VIDEO -24VG(FD-) <7800>...

  • Page 18: Schematic Diagram 1. Power/Tuner/Nicam

    SCHEMATIC DIAGRAM - 1/6 (POWER/TUNER/NICAM SECTION) MAIN(POWER/TUNER SECTION)C.B KTC3205 SYSTEM CONTORL/ SERVO/OSD SECTION 22uH (L/D) (DRUM) J146 SRA2203 Hi-Fi AUDIO/ KSR1003 SCART SECTION FILTER SRA2203 22uH SYSTEM CONTORL/ SERVO/OSD SECTION KTA1273 KTA1273 AUDIO/VIDEO SECTION KIA431 Hi-Fi AUDIO/ HOT CIRCUIT 2SA1980G SCART AC INPUT SECTION...

  • Page 19: Voltage Chart 1. Power/Nicam Section

    VOLTAGE CHART - 1/4 (POWER/NICAM SECTION) VOLTAGE CHART - 2/4 (AUDIO/VIDEO SECTION) IC301 IC101 TRANSISTOR IC751 REC PIN REC PIN REC PIN Emitter Collector Base 2.44 2.42 2.41 2.52 2.93 2.92 3.43 3.43 5.06 4.86 4.17 440Vp-p 450Vp-p 2.44 2.42 3.16 3.14 3.31 3.32 0.03 0.04...

  • Page 20: Waveform Audio/Video Section

    WAVEFORMS-1/2 (AUDIO/VIDEO SECTION) IC301 Pin IC301Pin IC301 Pin IC301 Pin 31, 32, 38 4.2Vp-p 1.4Vp-p 500mVp-p 1Vp-p REC mode PB mode Video in PB/REC modes IC301 Pin IC301 Pin IC301 Pin IC301 Pin 2.2Vp-p 2.1Vp-p 400mVp-p 600mVp-p REC mode PB mode PB mode PB mode IC301 Pin...

  • Page 21: Audio/Video

    SCHEMATIC DIAGRAM - 2/6 (AUDIO/VIDEO SECTION) MAIN(AUDIO/VIDEO SECTION)C.B (4/9) (5/9) (6/9) (3/9) FULL ERASE HEAD C344 0.01u SYSTEM CONTROL/ SERVO/OSD SECTION (2/9) C373 0.1u AUDIO/CTR HEADS Hi-Fi AUDIO/ SCART SECTION CYL.HEADS (3/5) 5.1K (1/3) (1/3) (1/3) <7800> (2/5) (7/9) AUDIO/VIDEO PROCESSOR SYSTEM CONTROL/...

  • Page 22: Hi-Fi Audio/Scart

    SCHEMATIC DIAGRAM - 3/6 (Hi-Fi AUDIO/SCART SECTION) MAIN(Hi-Fi AUDIO/SCART SECTION)C.B POWER/ TUNER W101 AUDIO SECTION 47uH OUT(R) SORTIE G OUT(L) SORTIE D AUDIO/ VIDEO SECTION IC901 MM1443XJ 47u/16V INPUT SELECT SW SYSTEM JK901(1/2) CONTROL/ SERVO/OSD SECTION Hi-Fi AUDIO PROCESSOR 1u/50V POWER/ TUNER SECTION...

  • Page 23: Hi-Fi Audio/Scart Section

    VOLTAGE CHART -3/4 (Hi-Fi AUDIO/SCART SECTION) IC801 11.9 12.0 IC801(TDA9605H) IC901 IC901(MM1443) 11.6 11.6 11.7 11.6 11.6 11.7 -23-...

  • Page 24: System Control/Servo/Osd

    SCHEMATIC DIAGRAM - 4/6 (SYSTEM CONTROL/SERVO/OSC SECTION) MAIN(SYSTEM CONTROL/SERVO/OSD SECTION)C.B KEY 1 C.B KEY 2 C.B PKM02 (2/3) PKM01 9MT168GK (2/8) <7800> <5850> CAT24W16P EEPROM (2/5) (2/5) LOADING (3/8) MOTOR (4/5) (3/5) AUDIO/VIDEO SECTION (5/5) RESET <7800> DRUM C.B PDM01 OTPB LED'H' HD6432197A37FX SYSCON/SERVO/OSD...

  • Page 25: System Control/Servo/Osd Section

    VOLTAGE CHART -4/4 (SYSTEM CONTROL/SERVO/OSD SECTION) IC501 REC PIN REC PIN REC PIN 2.45 2.47 5.15 PULSE 3.37 3.37 1.44 2.54 2.54 2.42 2.42 PULSE PULSE 5.26 5.26 2.54 5.05 5.05 PULSE PULSE 103 PULSE PULSE 2.54 2.30 PULSE PULSE 2.78 2.79 104 PULSE PULSE 2.54...

  • Page 26: System Control/Servo/Osd Section

    WAVEFORMS -2/2 (SYSTEM CONTROL/SERVO/OSD SECTION) CTL+ CTL– V.H/SW DV-SYNC (IC501 Pin (IC501 Pin (IC501 Pin (IC501 Pin 1V/10mS 1V/10mS 1V/10mS 1V/100µS REC/PB modes QUE/REV modes V-IN (IC501 Pin (IC501 Pin (IC501 Pin (IC501 Pin 1V/1mS 1V/10mS 1V/10mS 500mV/20µS REC/PB mode REC/PB modes C-SYNC V-OUT...

  • Page 27: Fl Display/Led Display

    FL DISPLAY -1/1 • GRID ASSIGNMENT • ANODE CONNECTION -27-...

  • Page 28: Wiring 1. Main C.b

    WIRING -1/4 (MAIN C.B) MAIN C.B JK901 AC200 ~ 240V JK801 AUDIO 50Hz EURO AV2 PMD01 P3D02 SORTIE PMC01 PML01 DECODER P3D01 EURO AV1 DRUM MOTOR AUDIO/CTR CAPSTAN MOTOR LOADIG MOTOR AUDIO/ HEADS PCM01 PDM01 CYL. HEADS VIDEO <7800> TU701 JK901(1/2) ENTREE ANTENNE...

  • Page 29: Nicam/A2 C.b

    WIRING -2/4 (NICAM/A2 C.B) NICAM/A2 C.B E C B E C B MAIN C.B MAIN C.B P7M01 P7M02 -29-...
  • Page 30 SCHEMATIC DIAGRAM -5/6 (KEY-1 C.B SECTIN) KEY 1 C.B SW903 LECTURE SG5311 D’UNC TOUCHE LECTURE D’UNC TOUCHE JK903 AUDIO-R JK902 AUDIO-L ENTREE(AV 3) JK901 SW901 SW902 VIDEO SRC1201 CHAINE <7800> SW904 MARCHE/ VEILLE MAIN C.B <5850> SYSTEM <7800> CONTROL/ SERVO/OSD SECTION PMK02 -30-...

  • Page 31: Key 1 C.b

    WIRING -3/4 (KEY-1 C.B) <HV-FX7800> MAIN C.B KEY 1 C.B PMK02 SW903,LED902 LECTURE SW904 D’UNC TOUCHE MARCHE/ VEILLE E C B SW901 CHAINE SW902 JK903 JK902 JK901 AUDIO-R AUDIO-L VIDEO ENTREE(AV 3) <HV-FX5850> MAIN C.B KEY 1 C.B PMK02 SW903,LED902...
  • Page 32 SCHEMATIC DIAGRAM -6/6 (KEY-2 C.B SECTIN) KEY 2 C.B SW906 SW908 SW910 PAUSE/STILL LECTURE ARRET SW905 SW907 SW909 SW911 ENR/OTR RETOUR / / AVANCE EJECT MAIN C.B SYSTEM CONTROL/ SERVO/OSD SECTION PMK01 -32-...

  • Page 33: C.b

    WIRING -4/4 (KEY-2 C.B) <HV-FX7800> KEY 2 C.B SW907 RETOUR / SW908 LECTURE SW909 / AVANCE SW911 EJECT SW905 ENR/OTR SW906 PAUSE/STILL SW910 ARRET MAIN C.B PMK01 <HV-FX5850> KEY 2 C.B SW909 / AVANCE SW907 RETOUR / SW911 EJECT SW908...

  • Page 34: Adjustment

    ADJUSTMENT 1. Servo Adjustment Test Equipment 1) PG Adjustment • Oscilloscope • Test Tape MODE MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION • AC Millivolt Meter TTV-P1 PLAY VIDEO OUT 'PLAY' KEY (SET) 6.5H ± 0.5H (TTV-P1) H/SW (W5D2, W5D3) 'O' KEY (REMOCON) Adjustment Location •...

  • Page 35: Ic Block Diagram

    IC BLOCK DIAGRAM -1/1 IC, LC74793 IC, FAN8082 IC, LA71598HM IC,LA71598HM DRIVER OUT PVCC PRE DRIVER VCTL SVCC BIAS VIN1 VIN2 LOGIC SWITCH IC, TDA9605H IC,TDA9605H IC,STR-G6351L IC, MM1443XJ Vcc1 Vcc2 IC,STR-G6351L TUN-V V OUT1 E1-V V OUT2 75 Drive E2-V V OUT3 EXT-V...

  • Page 36: Ic Description

    IC DESCRIPTION -1/3 (HD6432197A37FX) -1/3 Pin No. Pin Name Description SVss – Servo Block GND CTLref CTL amp reference CTL(+) PB CTL in/REC CTL out (+) CTL(–) PB CTL in/REC CTL out (-) CTL BIAS CTL amp bias voltage CTL FB CTL feedback SW control CTL AMP (O) CTL amp output...
  • Page 37 IC DESCRIPTION -1/3 (HD6432197A37FX)-2/3 Pin No. Pin Name Description R/C IN Remote data input CT DETECT C + detect – Not connected – Not connected REC 'H' High out at REC mode OTPB 'H' OTPB 'H' T/UP REEL Take-up reel pulse in CAP.
  • Page 38 IC DESCRIPTION -1/3 (HD6432197A37FX) -3/3 Pin No. Pin Name Description CAP ACCEL Capstan control at slow I-LIMIT Capstan current control S. MONITOR2 – Not connected S. MONITOR1 – Not connected – Not connected – Not connected – Not connected – Not connected SUP.
  • Page 39 IC DESCRIPTION -2/3 (MSP3417D-QG) -1/1 Pin No. Pin Name Description AVSUP – Analog power supply +5 V ANA IN+ IF inputt ANA IN- CTL(+) input/output TESTEN – Test pin XTAL IN Crystal oscillator XTAL OUT Crystal oscillator – Test pin D CTR OUT1 –...
  • Page 40 IC DESCRIPTION -3/3 (LC74793) -1/1 Pin No. Pin Name Description VSS1 – Connected to ground (ground of digital circuits) XTAL IN For the connection of crystal or capacitors of crystal oscillator, or external clock input XTAL OUT – CTRL1 L: Crystal oscillator; H: External clock input –...

  • Page 41: Electrical Troubleshooting

    ELECTRICAL TROUBLESHOOTING -1/17 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 42 ELECTRICAL TROUBLESHOOTING -2/17 7. Power Circuit(SMPS) (2) No 12VA.(Capstan) No 12VA. Does 5.3VA work normally? Check whether 5.3VA is out of order. Is the D109 normal? Replace the D109. Check 12VA Line of the MAIN C.B short. (3) No 12VT (CANAL, Buffer) No 12VT.
  • Page 43 ELECTRICAL TROUBLESHOOTING -3/17 2. Servo Circuit Unstable Video in PB Mode. Does the on screen noise level change periodically? Do CTL pulses appear at IC501 pin 8? Does the CFG divide Is the height of the CTL waveform appear at IC501 Head adjusted correctly? pin 9? Do the CTL pulses move...
  • Page 44 ELECTRICAL TROUBLESHOOTING -4/17 7. Power Circuit(SMPS) (4) No 5VT(5V) No 5VT(5V)(5VG). Is 5.3VA put into the Q152(Q151) Check whether 5.3VA is out of other. collector? Is the Q163(Q162) Base "H"? Check the µ-com Control. Is about 4.7V put into the Check the Q163(Q162) Q152(Q151) Base? whether it works normally.
  • Page 45 ELECTRICAL TROUBLESHOOTING -5/17 Capstan Motor Stopped. Does 12VA appear at PMD02 Pin 5? Does 2.8V appear at PMD02 Pin 4? Check Power. Check Connector and Capstan Does PWM wave appear at IC501 Motor Ass'y. Pin 108? Check the Components and foil Patterns Does the CFG signal appear at PMD02 Connected between IC501 Pin 108 and Pin 6?
  • Page 46 ELECTRICAL TROUBLESHOOTING -6/17 Drum Motor stopped. Does 12V appear at PMD01 Pin 4? Does 2.8V appear at PMD01 Pin 1? Check Power. Does Drum PWM appear at IC501 Pin Check Connector and Drum Motor Ass'y. 107? Check the Components and foil Pattern between IC501 Pin 107 and PMD01 Do DFG Pulses appear at PMD01 Pin 3? Pin 1 for shorts.
  • Page 47 ELECTRICAL TROUBLESHOOTING -7/17 Cassette tape loading is unstable. Is REG 12V applied to IC502 Pin 7? Is High signal applied to IC501 Pin 30 Check the power. when inserting the CST? Is 5.3V applied to R544? Does Low signal occur form IC501 Pin 72 Check the CST SW and Check the power.
  • Page 48 ELECTRICAL TROUBLESHOOTING -8/17 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 5.2V Pins 16, 40, 55, 58, 87? Line. (Power Circuit) Is the I C Bus siganl applied Refer to 'SYSTEM I...
  • Page 49 ELECTRICAL TROUBLESHOOTING -9/17 3. System & Front Panel Circuit Auto stop. Does SW30 waveform appear at IC501 Pin 105? Do Take-up reel pulses Check the Drum Motor appear at IC501 Pin 49? Signal. Do Take-up reel pulses Change IC501. appear at the base of Q514? Does 5.3V appear at RS501.
  • Page 50 ELECTRICAL TROUBLESHOOTING -10/17 4. 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 38? (Line In Jack) Is 5V applied to the IC301 Check the 5V Line.
  • Page 51 ELECTRICAL TROUBLESHOOTING -11/17 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 5.2V Pins 16, 40, 55, 58, 87? Line. (Power Circuit) Is the Color Rotary signal Check the Color Rotary applied to the IC301...
  • Page 52 ELECTRICAL TROUBLESHOOTING -12/17 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 5.2V Pins 16, 40, 55, 58, 87? Line.(Power Circuit) Does PB Mdoe operate Check PB Mode.
  • Page 53 ELECTRICAL TROUBLESHOOTING -13/17 5. Tuner/IF circuit (1) No picture on the TV screen No picture on the TV screen Does the Video signal at Is +30VT applied to Check 33VT line. the TU701 Pin24? TU701 Pin 16? Is +5VT applied to Check 5VT line.
  • Page 54 ELECTRICAL TROUBLESHOOTING -14/17 (2) No sound (Mono Model Only) No sound Check the Vcc of IC301 Pin 75. Check 5VT power. Check the Tuner Audio signal Chekc the signal flow from TU701 at IC301 Pin 76. Pin21 to IC301 Pin 76. Check the Audio signal at IC301 Pin 96.
  • Page 55 ELECTRICAL TROUBLESHOOTING -15/17 (3) No sound (Hi-Fi Model Only) No sound Check the Vcc of IC751 Pins 1, 19, 33. Check 5V power. Check the Tuner SiF signal at IC751 Pin 2. Check the Tuner Audio of TU701 Pin 22. Check the oscillator of IC751 Pins 5, 6.
  • Page 56 ELECTRICAL TROUBLESHOOTING -16/17 6. Hi-Fi Circuit (Hi-Fi Model Only) Hi-Fi Playback. Check the Vcc of No sound IC801.(Pins 34, 40) Check the Hi-Fi Selection Check power. Switch and the Tape quality. Is the RF Envelope at Is the Head switching signal Check IC501 Pin 106.

  • Page 57: Electrical Troubleshooting

    ELECTRICAL TROUBLESHOOTING -17/17 Hi-Fi REC. It is impossible to record and playback Hi-Fi Audio signal. Check Vcc of IC801. (Pins 34,40) Check IC801 Pin 42(Data),Pin 43(CLOCK). Check Power. Do Audio signals appear at IC801 Check ports of µ-COM. Pins 16, 17? Do FM Audio signals appear at IC801 Check Audio input signal of IC801 Pin 36?

  • Page 58: Mechanical Exploded View 1/1

    MECHANICAL EXPLODED VIEW -1/1 JK901 TU701 (FX5850 Model) (FX7800 Model) -58-...

  • Page 59: Mechanical Main Parts List 1/1

    323 S1-11R-008-9B0 CASE ASSY 330 S5-50R-021-0A0 COVER BOTTOM 452 S3-530-51A-000 SCREW,SPECIAL 457 87-741-097-410 SCREW,3-12 462 S3-531-36A-000 SCREW,SPECIAL(FBK) TYPE MODEL NAME SUFFIX ———— DECK ASSY,VIDEO D33Y1 DI(4HF, <78> HV-FX7800 A43 S7-21R-F14-1F0 PANEL ASSY FRONT(929MP/MY:FX78<78> A43 S7-21R-F13-5V0 PANEL ASSY,FRONT(911MP:FX5850E<58> <58> HV-FX5850 -59-...
  • Page 60 COLOR NAME TABLE 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...

  • Page 61: Mechanism Exploded View 1/3~3/3

    MECHANISM EXPLODED VIEW -1/3 -61-...

  • Page 62: Mechanism Main Parts List 1/3~3/3

    MECHANISM MAIN PARTS LIST -1/3 REF. NO PART NO. KANRI DESCRIPTION 032 S1-41R-000-2C0 CHASSIS ASSY D33Y 100 S3-01R-003-2A0 PLATE ASSY TOP 101 S8-10R-006-8A0 BRACKET SIDE(L) ———— HOLDER SIDE(L) 104 S9-74R-001-9A0 GUIDE CST ———— HOLDER CST ———— HOLDER SIDE(R) ———— LEVER STOPPER(R) ————...
  • Page 63 MECHANISM EXPLODED VIEW -2/3 -63-...
  • Page 64 MECHANISM MAIN PARTS LIST -2/3 REF. NO PART NO. KANRI DESCRIPTION 001 S7-23R-D20-6B0 DRUM(CIRC) ASSY UPPER ASSY PAL 002 S6-80R-B00-2A0 MOTOR(MECH) DRUM GVD-D33Y 003 S9-30R-010-8A0 HOLDER FPC(6CH) 004 S0-06R-002-0A0 CAP,FPC ———— ROLLER CLEANER ———— ARM CLEANER 009 S2-61R-001-7A0 ARM ASSY T/UP(D-33K) 011 S2-61R-001-8A0 ARM ASSY TENSION (D-33K) 012 S0-41R-000-3A0...
  • Page 65 MECHANISM EXPLODED VIEW -3/3 -65-...
  • Page 66 MECHANISM MAIN PARTS LIST -3/3 REF. NO PART NO. KANRI DESCRIPTION 032 S1-41R-000-2C0 CHASSIS ASSY D33Y 051 S4-00R-000-5A0 BELT CAPSTAN 052 S6-80R-A00-1A0 MOTOR(MECH) CAPSTAN F2QSB53 053 S9-74R-001-8A0 GUIDE RACK F/L 054 S4-70R-003-7A0 GEAR RACK F/L 055 S4-70R-003-3A0 GEAR DRIVE 056 S4-70R-003-2B0 GEAR,CAM 057 S4-70R-003-6B0 GEAR CONNECT...

  • Page 67: 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 68: 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 69 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 70: 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 71: 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 72: 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 73: 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 74: 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 75: 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 76: 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 77: 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 78: 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 79: 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 80: 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 81: 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 82: 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 83: 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 84: 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 85: 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 86: 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 87: 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 88: 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 89: 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 90 MECHANISM TROUBLESHOOTING GUIDE AUTO STOP. (PLAY/CUE/REV) Check aligment positions (page 80) 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 91 MECHANISM TROUBLESHOOTING GUIDE In PB mode Tape Presence not sensed. Is the Pinch Roller attached Check Alignment positions to the Capstan Motor Shaft? (page 80) 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 92: 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 93 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 94 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 931196 Printed in Singapore...

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