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Aiwa VX-T2170 Service Manual

Integrated color tv/video cassette recorder
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SERVICE MANUAL

INTEGRATED COLOR TV/VIDEO
CASSETTE RECORDER
GENERAL
POWER REQUIREMENTS .................
POWER CONSUMPTION ...................
WEIGHT ..............................................
DIMENSIONS ......................................
TV SECTION
PICTURE TUBE ..................................
TUNER SYSTEM ................................
CHANNEL COVERAGE ......................
TV SYSTEM ........................................
HORIZONTAL RESOLUTION ............
VCR SECTION
OPERATING TEMPERATURE ...........
VIDEO RECORDING SYSTEM ..........
VX-T2170
SPECIFICATIONS
110-240V AC, 50/60Hz
65W
25 kg (55 lbs.)
574 mm (W) x 365 mm (D) x
384.5 mm (H)
(17 1/4 x 14 3/8 x 15 1/4 in.)
406 mm (W) x 305 mm (H)
(16 x 12 1/8 in.)
508 mm (diagonal) (20 in.)
Voltage synthesized tuner
VHF-L (low): E2 to S7
VHF-H (high): S8 to S36
UHF: S37 to 69
B/G, D/K, I
240 lines
5°C to 40°C
Rotary 2 head helical
scanning system
S/M Code No. 09-994-324-9O1
BASIC TAPE MECHANISM : OVD-5
VIDEO SIGNAL SYSTEM ................
VIDEO HEAD ...................................
USABLE CASSETTES .....................
TAPE SPEED ...................................
RECORDING/PLAYBACK TIME .....
VIDEO INPUT ...................................
VIDEO OUTPUT ..............................
VIDEO S/N .......................................
AUDIO INPUT ..................................
AUDIO OUTPUT ..............................
•
Design and specifications are subject to change without
notice.
PH
PAL/MESECAM color system,
625 lines, 50 fields
Azimuth 2 head
VHS video cassette
PAL/MESECAM
SP: 23.39 mm/sec
LP: 11.69 mm/sec
NTSC (Playback SP only)
33.35 mm/sec
PAL/MESECAM
SP: 4 hours 20 minutes max.
with E-260 tape
LP: 8 hours 40 minutes max.
with E-260 tape
NTSC (Playback SP only)
3 hours with T-180 tape
1.0Vp-p, 75 ohm, unbalanced
1.0Vp-p, 75 ohm, unbalanced
53dB (nominal)
–3.8dBs, 50K ohm
–3.8dBs, less than 50K ohm

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Summary of Contents for Aiwa VX-T2170

  • Page 1: Service Manual

    VX-T2170 SERVICE MANUAL INTEGRATED COLOR TV/VIDEO BASIC TAPE MECHANISM : OVD-5 CASSETTE RECORDER SPECIFICATIONS GENERAL POWER REQUIREMENTS ....110-240V AC, 50/60Hz VIDEO SIGNAL SYSTEM ....PAL/MESECAM color system, POWER CONSUMPTION ....625 lines, 50 fields 25 kg (55 lbs.) VIDEO HEAD ........

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ................................COVER TABLE OF CONTENTS ..............................SERVICING NOTICES ON CHECKING ..........................VCR TEST TAPE INTERCHANGEABILITY TABLE ......................DISASSEMBLY INSTRUCTIONS REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS ................... B1-1, B1-2 REMOVAL OF DECK PARTS ............................B2-1~B2-5 REMOVAL OF ANODE CAP ............................B3-1 KEY TO ABBREVIATIONS ..............................

  • Page 3: Servicing Notices On Checking

    SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY As for the places which need special attentions, they are Safety is secured against an X-ray by considering about indicated with the labels or seals on the cabinet, chassis the cathode-ray tube and the high voltage and parts.

  • Page 4: Vcr Test Tape Interchangeability Table

    VCR TEST TAPE INTERCHANGEABILITY TABLE There are two types of the new alignment 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.

  • Page 5: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1-3: TV/VCR BLOCK (Refer to Fig. 1-3) 1. REMOVAL OF MECHANICAL PARTS Remove the 2 screws 1. AND P.C. BOARDS Disconnect the following connectors: 1-1: BACK CABINET (Refer to Fig. 1-1) (CY757, CP353, CP503, CP502 and CP301). Remove the 2 screws 1 and 4 screws 2. Unlock the support 2.
  • Page 6 DISASSEMBLY INSTRUCTIONS 1-5: DECK SHIELD PLATE (Refer to Fig. 1-5) NOTE Remove the screw 1. When installing the Front Loading Unit 15, align the Remove the 3 screws 2. timing marker and pull the Cassette Holder Ass'y in the Remove the screw 3. direction of arrow (C).

  • Page 7: Removal Of Deck Parts

    DISASSEMBLY INSTRUCTIONS REMOVAL OF DECK PARTS 2-1: LINK GEAR (R) / CAM GEAR (Refer to Fig. 2-1) Top Bracket Unlock the support 1. Remove the BOT Sensor Cover and BOT Reflector. Bracket R Spring Unlock the 3 supports 2. Remove the Side Bracket R2 and Spring Earth. Joint Gear Remove the Flap Lever, Link Gear (R) , Cam Gear Side Bracket L...
  • Page 8 DISASSEMBLY INSTRUCTIONS 2-5: CASSETTE SIDE L (Refer to Fig. 2-5) 2-7: TENSION BAND (Refer to Fig. 2-7) 1. Unlock the 2 supports 1. 1. Remove the Tension Arm Spring 1. 2. Remove the Cassette Side L. 2. Remove the Tension Arm Spring 2. 3.
  • Page 9 DISASSEMBLY INSTRUCTIONS Reel Disk S Pinch Roller Polyslider Washer Reel Disk T Cassette Opener Polyslider Washer Spring Cam Pinch Polyslider Washer Spring P5 Cam Pinch Roller Polyslider Washer Fig. 2-8 Cam P5 Cam Gear 2-9: PINCH ROLLER / CASSETTE OPENER Arm P5 Ass'y (Refer to Fig.
  • Page 10 DISASSEMBLY INSTRUCTIONS Capstan Belt Audio Control Head Mode Switch Audio Control Head Audio Control Head Spring Spring Tension Lever Plate Bottom Spring Deck Chassis Audio Control Head Base Fig. 2-10 2-11: CYLINDER UNIT (Refer to Fig. 2-11) Disconnect the following connectors: (CP4101 and CP4102) on the Head Amp PCB.
  • Page 11 DISASSEMBLY INSTRUCTIONS 2-14: MAIN CAM (Refer to Fig. 2-14) 2-15: CAPSTAN DD UNIT (Refer to Fig. 2-15) 1. Remove the 3 screws 1. Remove the Loading Lever. Remove the Main Brake Lever. 2. Disconnect the CP4105. Remove the Capstan Brake Spring. 3.

  • Page 12: Removal Of Anode Cap

    DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction to 3. REMOVAL OF ANODE CAP remove the other. Read the following NOTED items before starting work. NOTE After turning the power off there might still be a potential Take care not to damage the Rubber Cap.

  • Page 13: Key To Abbreviations

    KEY TO ABBREVIATIONS Audio/Control H.SW Head Switch Automatic Color Control Hertz Audio Erase Integrated Circuit Automatic Frequency Control Intermediate Frequency Automatic Fine Tuning Indicator AFT DET Automatic Fine Tuning Detect Inverter Automatic Gain Control Killer Amplifier Left Antenna Light Emitting Diode A.PB Audio Playback LIMIT AMP...
  • Page 14 KEY TO ABBREVIATIONS SYNC Synchronization SYNC SEP Sync Separator, Separation Transistor TRAC Tracking TRICK PB Trick Playback Test Point UNREG Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse, Voltage Display V.PB Video Playback Variable Resistor V.REC Video Recording Visual Search Fast Forward Visual Search Rewind Voltage Super Source...

  • Page 15: Preventive Checks And Service Intervals

    PREVENTIVE CHECKS AND SERVICE INTERVALS The following standard table depends on environmental conditions and usage. Unless maintenance is properly carried out, the following service intervals may be quite shortened as harmful effects may be had on other parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. Time 1,000 1,500...

  • Page 16: Note For The Replacing Of Memory Ic

    NOTE FOR THE REPLACING OF MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. NOTE •...

  • Page 17: Deck Parts Locations

    DECK PARTS LOCATIONS (TOP VIEW) Main Chassis Loading Motor Tension Arm Ass'y Pinch Roller Block EOT Reflector Cam Gear Guide Roller S Ass'y Cassette Opener P0 Post Brake Bracket P1 Post Reel T FE Head LED Reflector Cylinder Unit Guide Roller T Ass'y Auto Head Cleaning Reel S Head Amp PCB...
  • Page 18 DECK PARTS LOCATIONS (BOTTOM VIEW) Worm Bracket F Ass'y Capstan Brake Ass'y Mode Switch Bottom Plate Worm Ass'y Clutch Gear S Ass'y Worm Bracket R Ass'y Idler Arm Ass'y Loading Motor Belt Center Pulley Capstan DD Unit Clutch Gear T Ass'y (FRONT LOADING UNIT 15) Side Bracket L Top Bracket Ass'y...

  • Page 19: Servicing Fixtures And Tools

    SERVICING FIXTURES AND TOOLS VHS Alignment Tape JG002B Adapter JG005 Post Adjustment JG153 X Value Adjustment Screwdriver JG001C (TTV-P2 or CH-2) JG002F Dial Torque Gauge Screwdriver JG001D (TTV-P1 or CH-2) (60~600gf•cm) Part No. SV-TG0-030-000 JG002G (100~1200gf•cm) (small) JG022 Master Plane JG024 Reel Disk Height JG100A Torque Tape JG154 Cable...

  • Page 20: Preparation For Servicing

    PREPARATION FOR SERVICING Basic Servicing Position (In case of needing to check on all blocks) Unplug the connector CP301, CP353 and CY757, then remove the TV/VCR Block from the set. Unplug the connector CP810, CP820 and CP850, then remove the Main PCB from the VCR Block. Connect as shown in the below figure using the Service Fixture.

  • Page 21: Mechanical Adjustments

    MECHANICAL ADJUSTMENTS 1-2: CONFIRMATION AND ADJUSTMENT OF 1. CONFIRMATION AND ADJUSTMENT TENSION POST POSITION Read the following NOTED items before starting work. Turn on the power and set to the PLAY mode adjust the Tension so that the Tension Post is at the position of •...
  • Page 22 MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF FAST FORWARD TORQUE NOTE If the torque value checked is out of tolerance, replace Set torque gauge (JG002G) on take-up reel disk, and the appropriate parts as follows. place unit in FAST FORWARD mode. (Refer to Fig. 1-4) Confirm that torque is more than 400gf•cm.
  • Page 23 MECHANICAL ADJUSTMENTS Beginning Ending Audio/Control Head Maximum Maximum A:B=3:2 Fig. 2-1-B 0.25mm 2-2: CONFIRMATION AND ADJUSTMENT OF A/C HEAD TILT Video Tape Video Tape When the tape is running abnormally, perform the following adjustments. Insert a new tape and play it back. Fig.

  • Page 24: Major Components Location Guide (Vcr)

    MAJOR COMPONENTS LOCATION GUIDE (VCR SECTION) TP4001 TP4002 TP1001 IC4001 IC601 J4501 J4502 TU6001 IC101 C101 TP4501 CP6115 SYSCON CP6001 L6011 IC6001 L6012 D2-1...

  • Page 25: Electrical Adjustments (Vcr)

    ELECTRICAL ADJUSTMENTS 3-2: VCO COIL (VCR SECTION) NOTE 3. ADJUSTMENT PROCEDURE For adjusting of VCO, connect input and output terminals Read and perform these adjustments when repairing the of sweepmarker generator to the circuit as shown below, circuits or replacing electrical parts or PCB assemblies. then adjust it.
  • Page 26 ELECTRICAL ADJUSTMENTS 38.9MHz Fig. 3-3 D2-3...

  • Page 27: Major Components Location Guide (Tv)

    MAJOR COMPONENTS LOCATION GUIDE (TV SECTION) FB401 T501 SCREEN VOLUME FOCUS VOLUME TP401 VR502 MAIN TP801 TP803 J801 D3-1...

  • Page 28: Electrical Adjustments (Tv)

    ELECTRICAL ADJUSTMENTS (TV SECTION) ADJUSTMENT MODE4 4. BASIC ADJUSTMENTS 1. R-Y B OFFSET 2. B-Y B OFFSET On-Screen Display Adjustment Unplug the AC plug for more than 30 minutes to set the clock to the non-setting state. (To release the Back-Up immediately, take the short circuit between C101 and GND at the Power Off.) Then, set the volume level to minimum.
  • Page 29 ELECTRICAL ADJUSTMENTS 4-4: HORIZONTAL PHASE (TV) 4-10: OSD HORIZONTAL Receive the color bar pattern (RF Input). Using the remote control, set the brightness and Using the remote control, set the brightness and contrast to normal position. contrast to normal position. Activate the adjustment mode display of Fig.
  • Page 30 ELECTRICAL ADJUSTMENTS 4-15: SUB COLOR (TV) 4-18: CONSTANT VOLTAGE Receive the color bar pattern (RF Input). Set to the AV mode. (No input for AV) Connect the oscilloscope to TP801. Connect the DC voltmeter to TP401. Activate the adjustment mode display of Fig. 4-3 and Adjust the VR502 until the DC voltmeter is 119 0.5V.

  • Page 31: Purity And Convergence

    ELECTRICAL ADJUSTMENTS PURITY AND CONVERGENCE 5-3: STATIC CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 5-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator. minutes before performing the following adjustments.

  • Page 32: Troubleshooting Guide

    TROUBLESHOOTING GUIDE (TV SECTION) POWER DOES NOT TURN ON (1) When turning on the Check P.CON 5V line. Power Switch, does the LED light ? Is the voltage at pin 1 Check ICP502, D511 and D512. of IC502 DC7.7V ? Is the voltage at pin 3 of Check IC502.
  • Page 33 TROUBLESHOOTING GUIDE POWER DOES NOT TURN ON (2) Is CP810 inserted ? Insert CD810. Is the voltage at C507 Check the circuit between Is F501 broken ? about 180~360V ? F501, C507 and R501. Check IC501 and the IC501 bad ? peripheral circuit.
  • Page 34 TROUBLESHOOTING GUIDE GOOD PICTURE BUT NO SOUND Is the voltage at CP301 Check speaker and the changed with the volume peripheral circuit. up or down key ? Is FUSE RESISTOR Is the voltage at EMITTER Check Sound +B line. (R517) broken ? of Q357 DC15V ? Replace FUSE RESISTOR (R517).
  • Page 35 TROUBLESHOOTING GUIDE NO PICTURE Are the Brightness and Adjust Brightness and Contrast. Contrast set to minimum ? Is the voltage at pin 3 of Check P.CON 9.6V line. IC601 DC9V ? Is the voltage at pin Check CHROMA 9V line. 17 of IC601 DC9V ? Is the voltage at pin 41 of Check D607.
  • Page 36 TROUBLESHOOTING GUIDE NO COLOR Is the color set to Adjust the color. minimum ? Is the color signal Receive the color signal. received ? Is the waveform at pin Check peripheral circuit of X601. 40 of IC601 normal ? Is the waveform at pin 42 Check peripheral circuit of VIDEO of IC601 normal ? Out line and Q602.
  • Page 37 TROUBLESHOOTING GUIDE ONLY A LINE APPEARS Is the normal signal at Check peripheral circuit of IC601. pin 4 of IC 401 input ? Is the voltage at pin 6 of Check R452 and FB401. IC402 DC25V ? Check peripheral circuit of IC401 and DY401.
  • Page 38 TROUBLESHOOTING GUIDE (VCR SECTION) PLAY SHUTS OFF Insert a cassette and push PLAY button. Check TAPE LOADIG, Check TAPE LOADING, Does it Power off in LOADING BELT,MODE SWITCH, LOADING BELT, MODE about 3 seconds? DD MOTOR and CYLINDER SWITCH, DD MOTOR and MOTOR.
  • Page 39 TROUBLESHOOTING GUIDE CYLINDER NOT ROTATING DURING PLAYBACK AND RECORDING Is the voltage at pin 6 of Check UNREG 12V line CP1002 about DC13V ? of Main PCB. In playback, is the voltage at pin 3 of Replace CYLINDER MOTOR. CP1002 about DC1.2V ? In playback, is the voltage at pin 44 of IC1001 DC5V Pulse and...
  • Page 40 TROUBLESHOOTING GUIDE AUDIO SHAKES Is AUDIO HEAD Replace AUDIO HEAD. scratched ? Does pin 15 of IC1001 Replace CAPSTAN DD. output a 3.0Vp-p square wave ? 3.0V In playback, is the voltage at pin 14 of CP1002 2.8V ? Check peripheral components Is the voltage at pin 14 of of IC1001.
  • Page 41 TROUBLESHOOTING GUIDE CASSETTE TAPE IS NOT ACCEPTED Does WORM GEAR Check WORM GEAR of of FRONT LOADING FRONT LOADING UNIT. UNIT activate ? When cassette is not inserted, is EOT BOT Check EOT, BOT, PHOTO PULSE at EMITTER of SENSOR, pins 2 and 4 of IC1001. Q1055, Q1056 5V ? When a cassette is inserted, is the voltage between pins...
  • Page 42 TROUBLESHOOTING GUIDE WHEN INSERTING CASSETTE, IT EJECTS IMMEDIATELY In another cassette tape Defective CASSETTE or does the same problem FRONT LOADING UNIT. appear ? In covering the infrared Replace EOT/BOT PHOTO sensor, is pin 2 and 4 of TRANSISTORS. IC1001 5V ? When inserting cassette, Check R1010.
  • Page 43 TROUBLESHOOTING GUIDE FF/REW DO NOT WORK When the FF/REW is pushed, Check pin 74 of IC1001 lines change does the PULSE appear at IC1001. pin 51 of IC1001 ? Is the voltage changing at Check pin 12 of CP1002 and pin 12 of CP1002 when peripheal circuit.
  • Page 44 TROUBLESHOOTING GUIDE TAPE LOADING IS OK, BUT UNLOADS IMMEDIATELY Is the voltage at pin Does CYLINDER rotate ? Check Power circuit. 6 of CP1002 UNREG 12V ? Does DC5V PULSE signal In playback, is the appear at pin 44 of IC1001 ? voltage at pin 3 of Is the voltage at pin 46 of CP1002 1.2V ?
  • Page 45 TROUBLESHOOTING GUIDE PLAYBACK PICTURE JITTERS HORIZONTALLY Is FG output level at pin 5 Replace CYLINDER MOTOR. of CP1002 about 5V? Is the voltage at pin 3 of Replace IC1001. CP1002 1.2V? Replace CYLINDER MOTOR. PLAYBACK PICTURE SHAKES PLAYBACKPICTURE SHAKES Is FG Pulse output level at Replace CYLINDER MOTOR.
  • Page 46 TROUBLESHOOTING GUIDE AUTO TRACKING DOES NOT OPERATE By manual tracking, Check IC4101 and does the DC level at pin 6 CYLINDER UNIT. of CP4001 change? Does the CTL PULSE In auto tracking, is the (about 1.0Vp-p) appear Check CONTROL HEAD. voltage at pin 5 of IC1001 at pin 19 of IC1001? more than DC1.85V?
  • Page 47 TROUBLESHOOTING GUIDE WHEN PLAYBACK,FAST FORWARD OR REWIND MODE IS ACTIVATED, UNIT STOPS IMMEDIATELY Refer to section "CAPSTAN Does CAPSTAN DD DD MOTOR NOT ROTATING" MOTOR rotate? Is CAPSTAN BELT OK? Replace CAPSTAN BELT Check REEL SENSOR and that Check if the REEL SENSOR Does REEL SENSOR PULSE the voltage at pin 10 of CX1003 receives the Pulse.
  • Page 48 TROUBLESHOOTING GUIDE PLAYBACK PICTURE JITTERS VERTICALLY Does tracking noise appear in the picture? By adjusting the manual tracking Check P/B ENVELOPE. UP/DOWN buttons,will the noise disappear in the picture? Are GUIDE POSTS Adjust GUIDE POST height. the right height? Is PG SHIFTER Adjust PG SHIFTER.
  • Page 49 TROUBLESHOOTING GUIDE NO PLAYBACK PICTURE Is E-E appearing on the Is the voltage at pins 12,28 Check Power circuit. Monitor TV? and 54 of IC4001 5V? Check 5V line. Is there PB Y/C signal at Check IC4101 and the TP4002? connection of the CYLINDER.
  • Page 50 TROUBLESHOOTING GUIDE NO COLOR DURING PLAYBACK Does FM ENVELOPE Check IC4101 and HEAD AMP appear at TP4002? BLOCK. Does CHROMA signal Check C4067 and the peripheral appear at pin 27 of IC4001? circuit. Does COMPOSITE Replace IC4002 signal appear at pin 16 of IC4002? Does COLOR BURST signal appear in the...
  • Page 51 TROUBLESHOOTING GUIDE PLAYBACK PICTURE NOISY (EVEN AFTER CLEANING HEADS) Is FM signal at TP4002 Replace CYLINDER MOTOR. more than 200mVp-p? Check Q4001,Q4016,Q4004 Is there FM signal at pin 11 of and the peripheral circuit. IC4001 140mVp-p? Is VIDEO waveform at Check pins 6 and 8 of IC4002 pin 6 of IC4001 over and the peripheral circuit.
  • Page 52 TROUBLESHOOTING GUIDE NO COLOR DURING SELF RECORDING AND PLAYBACK Does VCR signal Replace J4501. appear at pin 53 of Check VIDEO input circuit. IC4001 ? Does CHROMA Replace IC4001 signal appear at pin 29 of IC4001 ? Does FM signal Check Q4005, Q4006 and peripheral appear at pin 8 of circuit.
  • Page 53 TROUBLESHOOTING GUIDE NO NORMAL AUDIO ON PLAYBACK Refer to section "NO E-E". Does audio appear on E-E ? If the pin 52 of IC1001 is not High, Is the voltage at pin 17 replace the IC1001. of IC5001 High ? Does AUDIO signal Check R5013, R5014 and peripheral appear at pin 7 of...
  • Page 54 TROUBLESHOOTING GUIDE CAPSTAN DD MOTOR NOT ROTATION In playback, is the Check POWER circuit. voltage at pin 13 of CP1002 13V ? Is the voltage at pin 15 of CP1002 5V ? In playback, check the voltage at pin 17 of Replace IC1001.
  • Page 55 TROUBLESHOOTING GUIDE AUDIO CAN NOT BE RECORDED Is BIAS level O.K at Is the voltage at pin 20 Check POWER circuit. T5001 ? of IC5001 9.2V ? T5001 is broken or shorted. Check T5001 and peripheral circuit. Is there AUDIO Check the circuit between audio signal at pin 10 or 12 out of Tuner and pin 10 of IC5001.
  • Page 56 TROUBLESHOOTING GUIDE CASSETTE IN AND DOWN, UNIT HAS NO FUNCTIONS Does mode indicator Check LOADING MOTOR, MODE appear in Display ? SWITCH and the peripheral parts. Does VCR operate with Check IC1001. the remote control ? Check Operation PCB. E-25...
  • Page 57 TROUBLESHOOTING GUIDE RECORDING MECHANISM WORKS, BUT NO VIDEO RECORDED FROM INPUT JACK OR TUNER Check the circuit from VIDEO input Does VIDEO signal jack to IC4001, from Tuner Pack to appear at pin 51 or 53 IC4001. of IC4001 ? Is there VIDEO signal at pin 6 of IC4002 and Check the peripheral circuit of Q4007,...
  • Page 58 TROUBLESHOOTING GUIDE NO E-E (NO VIDEO AND AUDIO FROM TUNER) Is the voltage at pin 6 of Check TV Main PCB. TU6001 9V ? Is defect present when Is defect present when Check TU6001 and the peripheral replacing the TU6001. replacing the IF PCB ? circuit.

  • Page 59: Ic Descriptions

    IC DESCRIPTIONS OEC6052A Pin No. Pin Name Description — Ground. PAL/SEC O PAL/SECAM Selection. HALF TONE O HALF TONE terminal for T'TEXT. — — Not used. I2C OFF I2C BUS OFF input for the adjustment. H. SW H. SW input. —...
  • Page 60 IC DESCRIPTION OEC9032B Pin No. Pin Name Description VSAD — Ground. Tape start sensor input signal. CASS DOWN/SERVICE Input of CASS DOWN, TAB switch and setting of service mode. Tape end sensor input signal. VIDEO ENV DET Input terminal of video RF envelope. HI-FI ENV DET Input terminal of HI-FI RF envelope.
  • Page 61 IC DESCRIPTION OEC9032B Pin No. Pin Name Description Output the LOW signal while the capstan motor is rotation in the CAP F/R direction of PB. Control output to select the output of PLAYBACK picture or EE VV-H picture. EXT IN-L Input of external input signal.

  • Page 62: Servo Timing Chart

    SERVO TIMING CHART IC1001 (OEC9032B) DRUM 30 Hz PG ! 3 PIN DRUM 720 Hz FG !1 PIN 30 Hz VIDEO H. SW # 8 PIN 6.5 H 6.5 H V-SYNC $ 2 PIN CTL OUT * 0 PIN 30 Hz PB CTL ! 9 PIN •...

  • Page 63: System Switch Mode

    SYSTEM SWITCH MODE SWITCH PATTERN SWITCH COMPOSITION SW (0) SW (1) SW (2) SW (3) SIGNAL CONDITIONS OF SWITCHES SW 0 SW 1 SW 2 SW 3 MODE SWITCH MODE SWITCH DECK MODE DECK MODE SW 3 SW 2 SW 1 SW 0 SW 3 SW 2...

  • Page 64: Semiconductor Base Connections

    SEMICONDUCTOR BASE CONNECTIONS DIODE CATHODE CATHODE ANODE ANODE 1SS133T-77 11E1N-TA1B2 LFB-01L 10ELS2N-TA1B2 SLR-938C-4-AB EM-553-F1T 64PIN HZ6A3L TD 11E2N-TA1B2 10ELS6TA1B2 EM-553-F9T OEC6052A MTZJ12B T-77 11EQS04N-TA1B2 1R5NU41 SLZ-936C-07-S-T1 56PIN MTZJ13B T-77 11ES1N-TA1B2 21DQ09N-TA2B1 TB1226CN MTZJ13C T-77 EG01Z-V0 54PIN MTZJ5.1B T-77 RM11C TA1232AN MTZJ5.1C T-77 RU2AM V1 16PIN...

  • Page 65: Y/C/Head Amp

    TV BLOCK DIAGRAM VIDEO CHROMA DEFLECTION TIMER MICON IC601 TB1226CN IC101 OEC6052A SYNC SEPA OSD R 33 CLAMP OSD G 34 SMOOTH INTERF Q6503,Q6502,Q6504 OSD B 35 BUFFER RGB SW TU. VIDEO (B) Y-ADD PWM VT TUNER/AUDIO/IF TV/NEXT Q105 AFT S.CURVE VD 38 SHARPNESS TUNER MUTE...
  • Page 66 Y/C/HEAD AMP BLOCK DIAGRAM Q4007 BUFFER Q4009 CP4106 AUDIO PB Q4018 Q4012 A/C HEAD AUDIO REC BUFFER Q4015 AE HEAD (+) BUFFER 4.433619MHz Q4004 X4001 CP4103 Q4024 BUFFER CYL DRIVE CYL FG Q4001 CYL PG Q4017 BUFFER PAL Y/C SIGNAL Q4019 BUFFER PROCESS...
  • Page 67 SYSTEM CONTROL/OPERATION/POWER/IN/OUT BLOCK DIAGRAM SYSCON/SERVO IC1001 OEC9032B SW1010 CAS. DOWN/SERVICE VIDEO H. SW 38 TAB SW H. SW Q1002 Q1053 NTSC SW SUPPLY REEL REEL S SENS. VIDEO ENV. DET ENV. DET Y/C/HEAD AMP Q1054 Q1010 TAKE UP TRICK PB REEL T TRICK PB L 33 TRICK PB H...
  • Page 68 TUNER/AUDIO/IF BLOCK DIAGRAM IC6302 LA6358T VT DRIVER Q6304 VOLTAGE CONVERTER IC6303 TU6001 UPC574J PF5001 CP6115 TEST POINT VCR AUDIO OUT AV SW AUDIO IN SYSCON/ AUDIO REC OPE./POWER/ PWM VT AV SW VIDEO IN IN/OUT VCR AUDIO OUT AUDIO PB AUDIO REC/PB AMP IC5001 LA7289...

  • Page 69: Printed Circuit Boards (Operation/Led/Head Amp/If

    PRINTED CIRCUIT BOARDS OPERATION W811 C755 CD703 W812 R355 W814 R766 CD757 CP701_A W810 W003 Q751 R758 R771 R772 R759 R776 R760 R777 C781 R774 R773 CP702 J351 HEAD AMP R793 R761 R794 W020 Q4101 JP6005 W021 D791 D792 JP07 C6022 C4104 Q756...
  • Page 70 PRINTED CIRCUIT BOARDS HEAD AMP CD4102 JP05 CP4106 JP6004 IC02 L4101 VE6773A CP4101_2 IC01 CP4104 CP4103 C6019 CP4105 C6005_1...
  • Page 71 PRINTED CIRCUIT BOARDS OPERATION W811 C755 CD703 W812 R355 W814 R766 CD757 CP701_A W810 W003 Q751 R758 R771 R772 R759 R776 R760 R777 C781 R774 R773 CP702 J351 HEAD AMP R793 R761 CD4102 R794 W020 Q4101 JP6005 W021 D791 D792 JP07 C6022 JP05...

  • Page 72: Operation Schematic Diagram

    OPERATION SCHEMATIC DIAGRAM (OPERATION PCB) (LED PCB) FROM/TO OPERATION 1 CD757(CY757) CH2A013A CP701_A CP701_B IMSA-9272B-210A-T IMSA-9162S-10C-T REMOCON OUT REMOCON OUT REMOCON OUT AT 5V REMOCON +B REMOCON +B POWER ON L POWER ON L POWER ON L POWER LED SW PLAY LED REC LED REC LED...

  • Page 73: Head Amp Schematic Diagram

    HEAD AMP SCHEMATIC DIAGRAM (HEAD AMP PCB) C4119 33P CH C4120 33P CH CAPSTAN AFC SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK LUMINANCE SIGNAL 2.16 4.99 RECORD COLOR SIGNAL EP/SP PLAYBACK COLOR SIGNAL VCC2 AUDIO SIGNAL(REC) (LP) VCC A2 AUDIO SIGNAL(PB) CURRENT AMP SW 30 REC MUTE SW30 CYLINDER AFC SIGNAL...

  • Page 74: If Schematic Diagram

    IF SCHEMATIC DIAGRAM (IF PCB) JP6003 C6014 Q6003 0.0022 B 2SC3000 FROM/TO TUNER/AUDIO CP6001 6035B-12Z002-T P.CON 9V SAW FILTER TU.VIDEO CF6004 TSF5344 AFT S.CURVE JP6002 C6028 TU.AUDIO C6001 62P PH AT 5V 3P CH AGC CONTROL L6012 R6004 3600037 1.5K SIF SW C6010 0.033...

  • Page 75: Printed Circuit Boards Syscon

    PRINTED CIRCUIT BOARDS SYSCON Q107 W052 Q604 D609 D611 R4062 R667 Q4017 D610 R649 W077 D608 W096 C4052 W472 Q4015 R662 W807 W082 R4011 R610 W344 Q4009 W078 R4052 Q4007 W070 W957 W075 R4048 Q4012 C4096 C4057 W977 W941 W347 W254 R4012 C4007...
  • Page 76 PRINTED CIRCUIT BOARDS SYSCON TP351 IC1002 S819X C6127 W361 W269 C127_2 W013 CP6001_2 Q1056 X102 W268 D120 D6007 D1005 W900 CP6115 X101 W093 C6102 IC6303 IC6302 W092 C124 C103 W964 W176 C101 IC103 C5012_1 W919 R1042_1 W265 W011 D705 W169 IC102 W355 C6149_1...
  • Page 77 PRINTED CIRCUIT BOARDS SYSCON CP4002_1 CP850 W061 Q107 C663 CC001 W052 Q604 D609 Q1055 W063 D611 R4062 CP820 R4061 Q4017 D610 R667 R649 W077 D608 W410 W065 W096 C4052 W472 Q4015 R662 W807 W412 W068 W424 TP1001 W151 L4001 C4075 C4039 C4094 W082...

  • Page 78: Y/C Schematic Diagram

    Y/C SCHEMATIC DIAGRAM C4094 (SYSCON PCB) BUFFER 270P CH H.SW R4015 Q4007 L4008 C4026 TP4001_1 2SC2412K 56uH 100P CH Q4009 2SC2412K R4013 W818 1.5K BUFFER BUFFER R4027 Q4012 Q4015 2SA1037AK 2SC2412K 1.2K W991 Q4021 TP4002_1 DTC144EKA FROM/TO POWER I/O W961 Q4020 W968 P.CON+5V[B]...

  • Page 79: System Control Schematic Diagram

    SYSTEM CONTROL SCHEMATIC DIAGRAM LOADING MOTOR DRIVE FROM/TO HEAD AMP IC1002 OEC9029A C1019 CP1002(CP4103) (SYSCON PCB) COTROL LOGIC R1015 V.REF CTL TMC-W20P-A1 0.1 B Q1017 POWER LDM- SAVE 2SA1037AK LDM+ CYL_DRIVE CYL DRIVE R1004 CYL GND Q1018 CYL_FG 5.6K 11.5 11.5 11.8 CYL FG...

  • Page 80: Tuner/Audio Schematic Diagram

    TUNER/AUDIO SCHEMATIC DIAGRAM B6102 TO POWER/ I/O (SYSCON PCB) BLM31A601SPT TEST POINT FROM/TO Y/C CP6115 171826-4 R6115 (V.IN-GND) 470K AFT S.CURVE ATS.LEVEL (V.OUT-GND) W930 W886 (AE/FE-HEAD) SWD_VIDEO_IN W935 BUFFER R6116 Q6104 TU.VIDEO[B] 100K 2SC2412K AE/FE_HEAD W860 R6109 R6103 AFT_S.CURVE 6.8K FROM/TO SYSCON T.AUDIO MUTE...

  • Page 81: Power/In/Out Schematic Diagram

    POWER/IN/OUT SCHEMATIC DIAGRAM (SYSCON PCB) FROM/TO Y/C P.CON+5V[B] FROM TV POWER CC002 P.CON+9V TP-1S-05 W934 CP810(CD810) VCR_VIDEO_OUT 8283_0812_00_003 DRIVER AT+5V Q1031 2SB698 or T AT+12V TO SYSCON AT+12V AT+12V P.CON+9V AT+12V P.CON+9V AT+5.6V P.CON+5V R1101 AT+5.6V MOTOR_GND AT+5.6V MOTOR GND AT+30V MOTOR_GND AT+30V...

  • Page 82: Micon Schematic Diagram

    MICON SCHEMATIC DIAGRAM (SYSCON PCB) W922 W827 R133 FROM/TO POWER I/O TIMER MICON SWITCHING IC101 OEC6052A Q102 BUFFER SWITCHING POWER_FAIL[DC] R185 L102 2SC2412K Q6504 Q111 P.CON+9V 2SC2412K 2SC2412K 150 1/4W 22uH P.CON+5V[B] VCR_POWER-H VCR POWER PAL/SEC.A R157 SWITCHING VCR_POWER-H Q110 2SC2412K TV POWER HALF TONE...

  • Page 83: Chroma Schematic Diagram

    CHROMA SCHEMATIC DIAGRAM FROM/TO DEFLECTION FROM/TO MICON CP820(CD820) 8283_1512_00_000 STOP (SYSCON PCB) SOUND+B TV_POWER-H VCR_POWER-H SOUND GND L604 W975 W807 CHROMA+9V 10uH VCR_POWER-H VCR POWER H TV_POWER-H TV POWER H D608 H.OUT LFB-01L BUFFER Q611 OSDBLK. V.OUT DTC114EKA OSDB R657 BUFFER OSDG Q612...

  • Page 84: Sound Amp Schematic Diagram

    SOUND AMP SCHEMATIC DIAGRAM (SYSCON PCB) FROM/TO OPERATION CP353(CD703) TO OPERATION 1 8283_0312_00_000 SOUND_OUT SOUND OUT SOUND GND SP OUT R370 R367 W849 W833 W852 2.2K 15.6 +B SW SOUND+B SW S828Y S828X Q358 Q357 15.0 DTC114TKA 2SB892 15.6 CP301 TID-X02P-B2 SP OUT 15.6 SOUND OUTPUT...

  • Page 85: Operation 1 Schematic Diagram

    OPERATION 1 SCHEMATIC DIAGRAM (SYSCON PCB) W997 W821 W822 FROM SYSCON T-REC_LED REC_LED V.REC_ST-H D703 W938 W929 1SS133 D708 MTZJ6.8C FROM POWER I/O AT+5.6V FROM/TO MICON REMOTE PB_LED KEY-A W984 W995 W996 KEY-B D705 TV_POWER-H 1SS133 CC004 CC003 8990006024 8990006024 FROM SOUND AMP AUDIO SIGNAL SOUND_OUT...

  • Page 86: Delay Schematic Diagram

    DELAY SCHEMATIC DIAGRAM (SYSCON PCB) FROM CHROMA V.OUT CHROMA_Y FROM POWER/I/O L601 10uH C653 150P CH DL601 SDL-4104 W705 W716 TUNER VIDEO SIGNAL CAUTION: DIGITAL TRANSISTOR NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE PCB010 VM8158 J-18...

  • Page 87: Printed Circuit Boards (Main/Crt/Power Sw

    PRINTED CIRCUIT BOARDS MAIN/CRT/POWER SW CD804 CD810 C413 S002 W027 W049 CD820_2 HS502 W047 D402 W825 W012 W014 W046 C532 IC504 R423 IC503 R534 W045 C523_1 IC502 C509 C520 B402 W011 D517 D519_2 C524 W044 W024 C519 C527 W834 W043 B403 D508 D511...

  • Page 88: Deflection Schematic Diagram

    DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) V.OUTPUT IC401 LA7832 V-DRIVE 14.2 23.5 22.8 C412 500V 680P C409 100P B CP401 R413 R416 TS-80P-04-V1 2.7K FB401_1 3221007A 248.0 TP-1S-05 127.3 +180 L402 V801 127.3 A51KSV43X06(MU) C431 ELH5L4112 HS401 250V L401 4.7mH R448_2 CD001 CP01425A C413...

  • Page 89: Tv Power Schematic Diagram

    TV POWER SCHEMATIC DIAGRAM (MAIN PCB) FROM/TO DEFLECTION +100V R507 S802X S802Y RELAY_H +B 100V DRIVE SOUND+B 1/4W Q503 TV.POWER_H 2SC4160-OEC-YAC11 TV.POWER_H RELAY_H +100V 100.2 99.5 VCR.POWER_H SOUND_GND 100V DRIVE Q502 100.2 2SA1371 D516 99.6 100.0 1SS133 TO TOP SHIELD RELAY DRIVE Q504 CD503 CP01810A...

  • Page 90: Crt Schematic Diagram

    CRT SCHEMATIC DIAGRAM (CRT PCB) FROM CHROMA CD850(CP850) CH25086A P.CON+9V R802 TP801 12K 2W R806 L850 HF57T18.5*10*10 1/4W 132.5 RED AMP D801 D802 Q804_1 2SC4217 R807_1 1SS133 1SS133 CUT OFF Q801 2.7K 1/4W 2SA733 R811 4.7K R805 TP802 12K 2W 132.1 132.9 GREEN AMP...

  • Page 91: Interconnection Diagram

    INTERCONNECTION DIAGRAM EAR.JACK J351 CP701_B CP701_A REMOCON OUT REMOCON +B TO OS753 POWER ON L REMOCON SENSOR REC LED OS753 T-REC LED AT 5V V.OUT OPERATION PCB200 TM101 FROM TM101 PCB030 LOADING MOTOR TE9973 TE9972 REMOTE CONTROLLER M101 DECK MECHA ASS’Y CAPSTAN DD UNIT M2001 HALL...

  • Page 92: Waveforms

    WAVEFORMS MICON 1 REC REC/PB 1V 20U/div color 1V 20U/div 1V 10U/div 200mV. 10U/div 2V. 10U/div 0.5V 5V/div SYSCON CHROMA REC/PB REC/PB 2V 20U/div 1V 20U/div 1V 20U/div 20mV 5V/div 200mV. 0.5V/div 0.5V. 0.5V/div REC/PB REC/PB 2V 20U/div 1V 20U/div color 1V 20U/div 200mV.
  • Page 93 WAVEFORMS SOUND AMP HEAD AMP 45 REC 5V. 500U/div REC/PB 500mV. 5V/div 500mV. 50V/div DEFLECTION 2V. 5V/div REC/PB 1V. 20U/div 50mV. 0.1s/div 5V. 20U/div 500V. 0.1s/div 50V. 20U/div 50mV. 10U/div 50V. 20U/div REC/PB 10mV. 1s/div 50V. 20U/div 50mV 50V/div The following waveforms were measured at the point of the corresponding NOTE: balloon number in the schematic diagram.

  • Page 94: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB ASS'Y) L503 145 117 V801 PCB070 (MAIN PCB ASS'Y) FB401 SP352 PCB340 (POWER SW PCB ASS'Y) PCB030 (OPERATION PCB ASS'Y) PCB200 124 133 (LED PCB ASS'Y) SP351 126 125 L1-1...
  • Page 95 MECHANICAL EXPLODED VIEW PCB330 (HEAD AMP PCB ASS'Y) PCB350 (IF PCB ASS'Y) PCB010 (SYSCON PCB ASS'Y) L1-2...

  • Page 96: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION Q'TY REF. NO. PART NO. DESCRIPTION Q'TY S5-520-1B7-200 CABI,FRONT ASS'Y ----- HOLDER,ANODE WIRE ----- LABEL,POP(NO. 1) S6-1WP-A01-450 HOLDER,FBT ----- PLATE,EARTH SYSCON ----- HEAT SINK ----- COATING CLIP EFB0692 ----- SHEET,CRT SUPPORT S0-0WB-0A0-020 FIBER WASHER 7x3.2xT0.5 ----- POP LABEL...

  • Page 97: Chassis Exploded View (Top View)

    CHASSIS EXPLODED VIEW (TOP VIEW) M2003 UN4001 H5001 H5002 M101 M1-1...

  • Page 98: Chassis Exploded View (Bottom View)

    CHASSIS EXPLODED VIEW (BOTTOM VIEW) SW101 M2001 M1-2...

  • Page 99: Front Loading Unit 15 Exploded View

    FRONT LOADING UNIT 15 EXPLODED VIEW M1-3...

  • Page 100: Chassis/Front Loading Unit 15 Replacement Parts List

    CHASSIS/FRONT LOADING UNIT 15 REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION Q'TY REF.NO. PART NO. DESCRIPTION Q'TY # 301 S5-OP6-004-710 BRACKET,BRAKE S5-OP9-007-000 BRACKET,TOP(2) S5-OP4-003-580 ADJUST,TENSION S5-OP9-006-750 BRACKET SIDE L S5-OA4-001-220 TENSION BAND ASS'Y S5-OA9-002-100 LINK ASS'Y 3 S5-OA4-001-240 TENSION ARM ASS'Y S5-OP9-006-150 BRKET,SIDE R S5-OA4-001-230 TENSION LEVER 2 ASS'Y S5-OP9-006-010 GEAR,JOINT...

  • Page 101: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION SYSCON PCB ASS'Y *** CAPACITORS *** *** RESISTOR *** C4507 87-010-378-010 CAP,E 10-16V C4514 87-010-112-080 CAP,E 100-16V ! R1042 S6-558-12R-7J0 RES,M/F 2.7-1W C4515 87-010-221-080 CAP,E 470-10V C5006 87-010-404-080 CAP,E 4.7-50V *** CAPACITORS *** C5010...
  • Page 102 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** ICS *** *** COILS *** IC4001 S0-5D3-232-AN0 IC,TA1232AN B1002 S2-4AC-140-150 CORE,BEADS(0) BLM31A601SPT IC4002 S0-5D0-885-0A0 IC,TL8850AP B4002 S2-4DT-035-810 CORE,BEADS LFP3A-M3R2TA IC5001 S0-3D7-728-900 IC,LA7289 B4004 S2-4AT-036-550 CORE,BEADS BL01RN1-A63T6 IC6301 S0-3F0-710-500 IC,LA7105M B6101 S2-4AC-140-150 CORE,BEADS(0) BLM31A601SPT...
  • Page 103 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** OTHERS *** *** CAPACITORS *** CY757 S6-CH1-A00-2A0 CORD,CONN CH1A002A C405 87-015-695-080 CAP,E 1-50V C406 87-010-393-010 CAP,E 100-35V CP4002 S6-CH2-207-0A0 CORD,CONN CH22070A C407 87-016-588-080 CAP,E 2200-25V C412 87-010-977-010 CAP,CER 680PF-500V OPERATION PCB ASS'Y C417...
  • Page 104 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** DIODES *** *** RELAY *** D528 S9-4TA-6RA-130 ZENER,HZ6A3L TD ! RY501 S5-60V-101-180 RELAY,ALKS325 D529 87-020-465-010 DIODE,1SS133T D530 S2-5T1-R5N-U00 DIODE,1R5NU41 *** OTHERS *** TH501 S8-R0F-140-M00 DEGAUSS PTH451C26 CD503 S6-CP0-181-0A0 CORD,CONN CP01810A CD804 S6-CP0-180-6A0 CORD,CONN CP01806A...

  • Page 105: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** OTHER *** *** FILTERS *** OS753 S7-7Q0-000-170 REMOTE RECEIVER PIC-28143TH5 CF6001 S0-12T-5R5-070 FLTR,CER TPWA02B CF6002 S0-12T-6R0-030 CER,FIL TPS6.0M HEAD AMP PCB ASS'Y CF6003 S0-12T-6R0-020 CER,FIL SFE6.0M CF6004 S0-292-38R-950 FILT,SAW TSF5344 *** CAPACITOR ***...
  • Page 106 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 Printed in Japan 920074...

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