Aiwa VX-S137 Service Manual
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Aiwa VX-S137 Service Manual

Aiwa VX-S137 Service Manual

Integrated color tv / stereo video cassette recorder
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SERVICE MANUAL
INTEGRATED COLOR TV / STEREO VIDEO
CASSETTE RECORDER
GENERAL
POWER REQUIREMENTS .................
POWER CONSUMPTION ...................
WEIGHT ..............................................
DIMENSIONS ......................................
TV SECTION
PICTURE TUBE ..................................
TUNER SYSTEM ................................
CHANNEL COVERAGE ......................
PROGRAM MEMORY .........................
TV SYSTEM ........................................
HORIZONTAL RESOLUTION ............
ANTENNA INPUT ...............................
VCR SECTION
OPERATING TEMPERATURE ...........
VIDEO RECORDING SYSTEM ..........
VX-S137
BASIC TAPE MECHANISM : OVD-6
SPECIFICATIONS
120V AC, 60Hz
91W
TYP 4W (power save mode)
13.5 kg (29.8 lbs.)
435 mm (W) x 370.5 mm (D) x
384.5 mm (H)
(17 1/4 x 14 5/8 x
15 1/4 in.)
208 mm (W) x 211 mm (H)
(8 1/4 x 8 3/8 in.)
335 mm (diagonal) (13 in.)
Frequency synthesized tuner
VHF: 2 to 13
UHF: 14 to 69
CATV: 5A, A-1 to A-5, A to W,
W+1 to W+84
181
M
230 lines
75 ohms, unbalanced
5°C to 40°C
Rotary 2 head helical scanning
system
S/M Code No. 09-004-344-3N1
VIDEO SIGNAL SYSTEM ................
VIDEO HEAD ...................................
USABLE CASSETTES .....................
TAPE SPEED ...................................
RECORDING/PLAYBACK TIME .....
VIDEO INPUT ...................................
VIDEO OUTPUT ..............................
VIDEO S/N .......................................
AUDIO INPUT ..................................
AUDIO OUTPUT ..............................
AUDIO TRACK .................................
FAST-FORWARD TIME ...................
REWIND TIME .................................
HI-FI DYNAMIC RANGE ..................
HI-FI FREQUENCY RESPONSE ....
HI-FI WOW AND FLUTTER .............
•
Design and specifications are subject to change without
notice.
U
NTSC color system, 525 lines, 60
fields
Azimuth 2 head
VHS video cassette
S-VHS video cassette (play back only)
SP: 33.35 mm/sec
LP: 16.67 mm/sec
SLP: 11.12 mm/sec
SP: 3 hours with T-180 tape
LP: 6 hours with T-180 tape
SLP: 9 hours with T-180 tape
1.0Vp-p, 75 ohm, unbalanced
1.0Vp-p, 75 ohm, unbalanced
53dB (nominal)
–8dBs, 50K ohm
–8dBs, less than 1K ohm
3 tracks (Hi-Fi sound 2 tracks, Normal
sound 1 track)
Approx. 2 minutes 15 seconds
with T-120 tape
Approx. 1 minute 48 seconds
with T-120 tape
More than 90dB
20Hz-20kHz
Less than 0.01%

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  • Page 1 VX-S137 SERVICE MANUAL INTEGRATED COLOR TV / STEREO VIDEO BASIC TAPE MECHANISM : OVD-6 CASSETTE RECORDER SPECIFICATIONS GENERAL POWER REQUIREMENTS ....120V AC, 60Hz VIDEO SIGNAL SYSTEM ....NTSC color system, 525 lines, 60 POWER CONSUMPTION ....fields TYP 4W (power save mode) VIDEO HEAD ........

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ................................COVER TABLE OF CONTENTS ..............................A1-1 SERVICING NOTICES ON CHECKING ..........................A2-1 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: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS 1-3: TV/VCR BLOCK (Refer to Fig. 1-3) Remove the 2 screws 1. AND P.C. BOARDS Disconnect the following connectors: 1-1: BACK CABINET (Refer to Fig. 1-1) (CP303, CP401, CP502, CP4201 and CP4202). Remove the 2 screws 1. Unlock the support 2.
  • Page 5 DISASSEMBLY INSTRUCTIONS 1-5: DECK SHIELD PLATE (Refer to Fig. 1-5) 1-7: JACK PLATE AND SYSCON PCB (Refer to Fig. 1-7) Remove the 2 screws 1. Remove the screw 1. Remove the screw 2. Remove the Syscon PCB in the direction of arrow (A). Remove the 2 screws 3.

  • Page 6: Removal Of Deck Parts

    DISASSEMBLY INSTRUCTIONS 2. REMOVAL OF DECK PARTS NOTE When you install the Tape Guide L, install as shown in the 2-1: TOP BRACKET (Refer to Fig. 2-1) circle of Fig. 2-3-B. (Refer to Fig. 2-3-B) Remove the 2 screws 1. Slide the 2 supports 2 and remove the Top Bracket.
  • Page 7 DISASSEMBLY INSTRUCTIONS 2-6: LINK ASS'Y (Refer to Fig. 2-6) 2-9: TENSION ASS'Y (Refer to Fig. 2-9-A) Set the Link Ass'y to the Eject position. Move the Inclined S Ass'y to the back side. Unlock the support 1 and remove the S Reel Stopper. Remove the (A) side of the Link Ass'y first, then remove the (B) side.
  • Page 8 DISASSEMBLY INSTRUCTIONS 2-11: S REEL/T REEL ASS'Y (Refer to Fig. 2-11) NOTE Remove the Idler Ass'y. Do not touch the Pinch Roller. (Use gloves.) Remove the S Reel and T Reel Ass'y. When you install the Pinch Roller Ass'y, install as Remove the 2 Polyslider Washers 1.
  • Page 9 DISASSEMBLY INSTRUCTIONS 2-15: AHC ASS'Y/CYLINDER UNIT ASS'Y (Refer to Fig. 2-15) Middle Gear Unlock the support 1 and remove the AHC Ass'y. E-Ring Remove the 3 screws 2. Remove the Cylinder Unit Ass'y. Main Cam NOTE Pinch Roller Cam When you install the Cylinder Unit Ass'y, tighten the screws from (1) to (3) in order while pulling the Ass'y Joint Gear Link Lever Spacer...
  • Page 10 DISASSEMBLY INSTRUCTIONS 2-19: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-19-A) 2-20: INCLINED S/T ASS'Y (Refer to Fig. 2-20) Remove the E-Ring 1 and remove the Main Loading Unlock the support 1 and remove the P4 Cover. Gear. Remove the S-S Brake Spring. Unlock the support 2 and remove the Loading Gear Remove the Capstan Brake Spring.

  • Page 11: 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 12: 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 13 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 14: Service Mode List

    SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter SERVICE MODE, Unplug AC cord till lost actual clock time. Then press and hold Vol (-) button of main unit and remocon key simultaneously.

  • 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 PREVENTIVE CHECKS AND SERVICE INTERVALS CLEANING NOTE 2. TAPE RUNNING SYSTEM After cleaning the heads with isopropyl alcohol, do not When cleaning the tape transport system, use the run a tape until the heads dry completely. If the heads gauze moistened with isopropyl alcohol. are not completely dry and alcohol gets on the tape, 3.

  • Page 17: 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: Initial Data setting will not be possible if clock has been set.

  • Page 18: Servicing Fixtures And Tools

    SERVICING FIXTURES AND TOOLS (For 2 heads model) (For 4 heads model) JG002B Adapter JG005 Post Adjustment VHS Alignment Tape VHS Alignment Tape JG002E Dial Torque Gauge Screwdriver JG001 (TTV-N2) JG001B (TTV-N2) (10~90gf•cm) Part No. SV-TG0-030-000 JG001A (TTV-N12) JG001I (TTV-N12) JG002F (60~600gf•cm) (small)

  • Page 19: Preparation For Servicing

    PREPARATION FOR SERVICING Basic Servicing Position (In case of needing to check on all blocks) Unplug the connector CP4201, CP4202 and CP303, 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 20 PREPARATION FOR SERVICING Servicing Position for Main PCB (In case of needing to check on Main PCB) • It's possible to get the Servicing Position without the extension Jig if you arrange the unit as shown below. (But L503 connection can not be done, Degauss circuit will not operate.) L503 (2 Pin) VHS Tape Main PCB...

  • Page 21: 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 22: Mechanical Adjustments

    MECHANICAL ADJUSTMENTS 1. CONFIRMATION AND ADJUSTMENT 1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION Read the following NOTES before starting work. Set to the PLAY mode. • Place an object which weighs between 450g~500g on Adjust the Tension Adjust until the edge of the Tension the Cassette Tape to keep it steady when you want to Arm is positioning within 0.5mm range from the make the tape run without the Cassette Holder.

  • Page 23: Confirmation And Adjustment Of Tape Running Mechanism

    MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF VSR TORQUE 2. CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM Operate within 4~5 seconds after the reel disk begins to turn. Tape Running Mechanism is adjusted precisely at the Install the Torque Gauge (JG002F) and Adapter (JG002B) factory.
  • Page 24 MECHANICAL ADJUSTMENTS 2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/ 2-3: TAPE RUNNING ADJUSTMENT CONTROL HEAD (X VALUE ADJUSTMENT) When the Tape Running Mechanism does not work well, Confirm and adjust the height of the Reel Disk. adjust the following items. (Refer to item 1-1) Confirm and adjust the position of the Tension Post.

  • Page 25: Mechanism Adjustment Parts Location Guide

    MECHANICAL ADJUSTMENTS 3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE 1. Tension Adjust P4 Post 2. Tension Arm T Brake Spring 3. Guide Roller T Reel Ass'y 4. P1 Post Idler Ass'y 5. Audio/Control Head S-S Brake Spring 6. X value adjustment driver hole S Reel D1-4...

  • Page 26: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE Read and perform these adjustments when repairing the CH-2 circuits or replacing electrical parts or PCB assemblies. CAUTION When replacing IC's or transistors, use only specified 6.5H silicon grease (G746). (To prevent the damage to IC's and transistors.) CH-1 Fig.
  • Page 27 ELECTRICAL ADJUSTMENTS 2-5: STEREO SEPARATION 2-9: VERTICAL SIZE NOTE: Adjust after performing adjustments in section 2-4. NOTE: Adjust after performing adjustments in section 2-8. Receive the stereo signal. (L=2KHz, R=400Hz) Receive the cross hatch signal from the Pattern Connect the AC voltmeter to AUDIO OUT L/R through Generator.
  • Page 28 ELECTRICAL ADJUSTMENTS 2-14: SUB BRIGHTNESS 2-16: SUB TINT Receive the black pattern*. (RF Input) Receive the color bar pattern. (RF Input) Using the remote control, set the brightness and Using the remote control, set the brightness, contrast, contrast to normal position. color and tint to normal position.
  • Page 29 ELECTRICAL ADJUSTMENTS 2-20: WHITE BALANCE NOTE: Adjust after performing adjustments in section 2-13. Place the set with Aging Test for more than 15 minutes. Receive the white 100% signal from the Pattern Generator. Using the remote control, set the brightness and contrast to normal position.

  • Page 30: Electrical Adjustment Parts Location Guide

    ELECTRICAL ADJUSTMENTS 3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (VCR SECTION) TP1001 TP1002 TP4001 TU601 CP603 L610 TP601 TP4201 J4201 SYSCON PCB D2-5...
  • Page 31 ELECTRICAL ADJUSTMENTS (TV SECTION) J801 TP803 TP801 CRT PCB VR502 TP401 T501 FOCUS VOLUME FB401 SCREEN VOLUME MAIN PCB D2-6...

  • Page 32: Purity And Convergence Adjustments

    ELECTRICAL ADJUSTMENTS 4. PURITY AND CONVERGENCE 4-3: STATIC CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 4-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator.

  • Page 33: Troubleshooting Guide

    TROUBLESHOOTING GUIDE (Television division) (In case that there isn't a normal tension for time to do ( 1 ) that a power supply doesn't stanby CD810 every terminal) enter Is there output on the Voltage of C507 is Investigate R501 and F501. secondary of T501 it normal? dimensions or not?
  • Page 34 TROUBLESHOOTING GUIDE (in case that there is a normal tension for time to do ( 2 ) that a power supply doesn't stanby CD810 every terminal) enter Is the voltage 5V for Investigate D1006 and D1011. IC1001 99th pin or not? Is the voltage of IC1001 Investigate D1015 and Q1023.
  • Page 35 TROUBLESHOOTING GUIDE A voice isn't though an image appears Whether does a signal Whether does a signal Investigate IC4001 76th pin, come to IC352 6th pin come to IC301 2nd pin 78th pin and 80th pin. and 8th pin or not? and 19th pin or not? Investigate IC301 peripheral circui.
  • Page 36 TROUBLESHOOTING GUIDE A color doesn't adhere to it Whether is wave form of Investigate X604. IC604 47th pin normal or not? Whether is wave form of Investigate IC604. IC604 54th pin normal or not? IC604 17th pin, 18th pin, and whether is wave form Investigate IC604.
  • Page 37 TROUBLESHOOTING GUIDE An image doesn't appear Is the voltage DC 5V for Investigate P.CON 5V line. IC604 6th pin or not? Whether is a luminance signal early in IC604 Investigate IC604. 56th pin or not? Whether is a luminance Investigate IC4001. signal early in IC4001 29th pin or not? R, G, B signal out from...
  • Page 38 TROUBLESHOOTING GUIDE An only horizontal line appears Is the voltage DC 25V for Investigate C429 and D411 IC401 6th pin or not? Investigate CRT, IC401 and a Is the voltage DC 14V for peripheral circuit. IC401 2nd pin or not? Whether does a vertical Investigate IC604.
  • Page 39 TROUBLESHOOTING GUIDE (Video division) Release playback Insert a cassette, push a PLAY button. Investigate a tape roading, Is the playback released roading belt, mode sensor, DD approximately 3 seconds motor, and cylinder motor. later? Is the playback released Investigate a reel sensor and approximately 6 seconds reel belt.
  • Page 40 TROUBLESHOOTING GUIDE When playback, a screen doesn't appear Whether it takes 5V for Investigate a power supply Whether does a screen IC4001 16, 25, 40, 55, circuit. of E-E appear or not? 58, 75, 87th pin or not? Whether there are PB Investigate a connection of Y/C signal for TP4001 IC4001 and cylinder.
  • Page 41 TROUBLESHOOTING GUIDE When playback, a color doesn't adhere to it Whether does FM Investigate CP4001 and the envelope appear for peripheral circuit. TP4001 or not? Whether does CHROMA Investigate Q4008 and the signal appear for IC4001 peripheral circuit. 71st pin or not? Whether does composite signal appear for IC4001 Exchange IC4001.
  • Page 42 TROUBLESHOOTING GUIDE Noise (it is really back to have cleaned a head) for a picture when playback Whether does Exchange cylinder unit and TP4001 FM signal CP4001. appear or not? There is FM signal for IC4001 41st pin, and Investigate a peripheral doesn't a noise circuit of IC4001 46th pin.
  • Page 43 TROUBLESHOOTING GUIDE No color during self recording and playback Investigate a video input Whether there is a circuit. (FRONT, and REAR video signal for IC4001 VIDEO IN) 29th pin or not? Whether there is Investigate Q4010 peripheral CHROMA signal for circuit.
  • Page 44 TROUBLESHOOTING GUIDE When playback, a sound doesn't appear Whether does a It refers to a clause of " E-E sound appear doesn't appear". with E-E or not? Investigates wound, whether a connector with an audio head is complete and inserted into Whether there is an CP4005 to investigate whether audio signal for IC4001...
  • Page 45 TROUBLESHOOTING GUIDE Capstan DD motor doesn't rotate When playback, is a Investigate a power supply tension of 8th pin of circuit. CP1004 5V? When playback, voltage of 4th pin of CP1004 2.5V or Exchange IC1001. whether is IC1001 12th pin 2.5V or not? When being reborn, is Exchange IC1001.
  • Page 46 TROUBLESHOOTING GUIDE A audio can't record it A bias level with L4003 Investigate Q4005 and is OK (approximately Q4006 peripheral circuit. 40Vp-p) Whether there is an Investigate a circuit to IC4001 audio signal for IC4001 76th pin with IC5501 61st pin. 76th pin or not? Whether there is an Investigate IC4001 and the...
  • Page 47 TROUBLESHOOTING GUIDE Though a cassette can insert it, a tape doesn't move Investigate a portion related to Does mode indicator roading motor and a mode appear in Display? sensor. Does VCR operate with Investigate IC1001 and CP1005. the remote control? Investigate a tact SW.
  • Page 48 TROUBLESHOOTING GUIDE Recording mechanism works, but no video recorded from input jack or tuner Whether there is a Investigate video input jack and video signal for IC4001 IC4001, tuner and IC4001 36, 38th pin or not? circuit. Whether there is a video Whether there is a signal for IC4001 41st video signal for IC4001...
  • Page 49 TROUBLESHOOTING GUIDE No E-E (no video and audio from tuner) Whether TU601 7th pin Investigate a power supply is 5V or not, whether is circuit. 9th pin 30V or not? Whether is IC604 6 and Investigate 5V and 9V lines. 28th pin 5V or not? Whether there is a Investigate a line of IC4001...
  • Page 50 TROUBLESHOOTING GUIDE Cylinder not rotating during playback and recording Whether is a voltage of Investigate UNREG 12V line of a CP1005 2nd pin DC 12V MAIN PCB. approximately or not? When playback, is a voltage of 5th pin of Exchange a cylinder motor. CP1005 DC 1.2V approximately? When playback, is a...
  • Page 51 TROUBLESHOOTING GUIDE A sound shakes Whether is an audio Exchange an audio head. head wounded or not? Whether is an input level of IC1001 87th Exchange capstan DD unit. pin a sine wave of 2.5Vp-p or not? When playback, is a When playback, is a tension of 65th pin of tension of 3rd pin of...
  • Page 52 TROUBLESHOOTING GUIDE A cassette tape can't insert it Whether does WORM Investigate a front roading gear gear of a cassette roading and LOCKER. block move or not? When not inserting Investigate IC1001 to a cassette more, is investigate LED and a tension of 3, 4th photosensor of a MAIN PCB pin of IC1001 0V?
  • Page 53 TROUBLESHOOTING GUIDE When inserting cassette, it ejects immediately For whether it is a cassette Whether don't you defective product or not, enter it with an other cassette roading block cassette or not? defective product. If you cover an infrared Exchange EOT/BOT photo rays sensor, 3rd of IC1001, transister.
  • Page 54 TROUBLESHOOTING GUIDE FF/REW do not work When pushing FF/REW button, does the voltage Exchange IC1001. of 65th pin of IC1001 Investigate IC1001 72nd pin. change? Whether does the Investigate Q1001 and the voltage of CP1004 peripheral circuit. 4th pin change? Investigate deck mechanism.
  • Page 55 TROUBLESHOOTING GUIDE Tape loading is OK, but unloads immediately Whether it takes UNREG Investigate a power supply Whether does a 12V for CP1005 2nd pin circuit. cylinder rotate or not? or not? Whether is a voltage of a When playback, it whether DC 5V pulse depends takes 1.3V for 5th on IC1001 65th pin or not...
  • Page 56 TROUBLESHOOTING GUIDE When playback, a picture vertically finely shakes Whether does a noise appear for a screen or not? For tracking UP/DOWN Investigate P/B envelope. make, does a noise of a screen get with no? Whether is a height Adjust guide post height. of a guide post correct or not? Whether is PG SIFTER...
  • Page 57 TROUBLESHOOTING GUIDE Auto tracking doesn't work Whether does DC level Investigate IC4001 and cylinder of IC4001 93rd pin unit. change with manual tracking or not? Whether is VIDEO Exchange IC1001. SYNC in IC1001 59th pin or not? Investigate Y/C circuit. E-25...
  • Page 58 TROUBLESHOOTING GUIDE When playback, fast forward or rewind mode is activated, unit stops immediately Whether does It refers to a clause of "Capstan capstan DD motor DD motor doesn't rotate" rotate or not? Whether is capstan Exchange capstan belt. belt normal or not? Whether there is a reel sensor pulse signal for Investigate Q1001 and R1006.
  • Page 59 TROUBLESHOOTING GUIDE When playback, a picture horizontally shakes Whether is FG output level of CP1005 3rd Exchange a cylinder motor. pin approximately 4.5Vp-p or not? Do you hang a load, become approximately 4V for 1.3V or Exchange IC1001. cylinders voltage of CP1005 5th pin? Exchange a cylinder motor.

  • Page 60: Ic Descriptions

    IC DESCRIPTION OEC7041A (IC1001) Pin No. Pin Name DESCRIPTION MSSEN-A Input terminal of mecha state sensor. MSSEN-B Tape end sensor input signal. Tape start sensor input signal. HI-FI-ENV Input terminal of HiFi RF envelope. VIDEO-ENV Input terminal of video RF envelope. AFT(MONI) Input terminal of AFT.
  • Page 61 IC DESCRIPTION OEC7041A (IC1001) Pin No. Pin Name DESCRIPTION OSC-OUT2 O Condenser connection for OSC-OUT2. Ground. CM_ADV_VIDEO I/O Not used. CM_ADV_AUDIO Not used. OSD-VSS Ground. TAB SW Input terminal for judge the tape if it has TAB or not. SERVICE Input terminal for Service Mode.
  • Page 62 IC DESCRIPTION OEC7041A (IC1001) Pin No. Pin Name DESCRIPTION AMP-VSS Ground. DRUM-FG Input terminal for drum rotation signal detection. DRUM-PG Input terminal for DRUM PG signal detection. AMP-VREFOUT O Condenser connection for AMP-VREFOUT. AMP-VREFIN Condenser connection for AMP-VREFIN. Condenser connection for C. CTL- I/O Input and output terminal of Control Head.

  • Page 63: Servo Timing Chart

    SERVO TIMING CHART IC1001 (OEC7041A) DPG ( 0 PIN DFG * 9 PIN H. SW. P CH 1 CH 2 ! 8 PIN V-SYNC (E-E) % 9 PIN REC CTL (REC) ( 7 PIN V-SYNC (TRICK PB) ! 3 PIN •...

  • Page 64: System Switch Mode

    SYSTEM SWITCH MODE : CAPSTAN FWD ROTATING SLOW : SETTING SPEED TO SERVO LOADING DIRECTION DIRECTION : MECHANICAL MOVEMENT AND CAPSTAN ROTATING (FWD) : CAPSTAN RVS ROTATING : MECHANICAL MOVEMENT (NO CAPSTAN ROTATING) DIRECTION EJECTION UNLOADING STP3 F. SLOW PB/STP STP2 FF/REW LIGHT...

  • Page 65: Semiconductor Base Connections

    SEMICONDUCTOR BASE CONNECTIONS DIODE CATHODE CATHODE ANODE ANODE 1SS133T-77 11E1N-TA1B2 21DQ09N-TA2B1 SID1050CM EM-553-F1T HZ11B3L TD 11EQS04N-TA1B2 RM11C EQ-552-F1T HZ27-1L TD 11ES1N-TA1B2 RU2AM V1 HZ30-1L TD 1N4005E-G23 HZ6A3L TD RD12FB-T7 MTZJ5.1B T-77 RMPG06J MTZJ5.6B T-77 MTZJ6.2B T-77 MTZJ6.8B T-77 MTZJ9.1B T-77 SB10-03A3 20PIN 64PIN...

  • Page 66: Semiconductor Base Connections

    SEMICONDUCTOR BASE CONNECTIONS TRANSISTOR SG-260 DTC114TSTP 2SD2396(J,K) 2SC4217(D,E)-RAC RPI-352Q01R DTC114ESTP 2SA1318(S,T)-AA 2SA1037AKT146R,S 2SD2599 DTA124EKAT146 2SC4160-OEC-YAC1 2SA1371(D,E)-AE 2SC2412KT146 R,S DTC114EKAT146 2SA733(C)-T_Q DTC114TKAT146 DTC124EKAT146 2SB892(S,T)-AE DTC143EKAT146 2SC1317(Q,R,S)-T 2SC1815Y(TPE2) 2SC2271(D,E)-AE 2SC2909(S,T)-AA 2SC3331(S,T,U)-A 2SC945(C)-T(P,Q)

  • Page 67: Y/C/Audio/Head Amp/In/Out

    TV BLOCK DIAGRAM V. OUTPUT IC401 LA7840 THERMAL R. SIGNAL PROTECTION G. SIGNAL PUMP B. SIGNAL COLOR SIGNAL LUMINANCE SIGNAL TUNER VIDEO SIGNAL AUDIO SIGNAL Q405 Q406 DEFLECTION SIGNAL H. DRIVE H. OUTPUT X604 3.579545MHz CHROMA/IF FB401 IC604 LA76814BM HIFI TU.A.OUT_1 J801 CLMP...

  • Page 68: Hifi

    Y/C/AUDIO/HEAD AMP/IN/OUT BLOCK DIAGRAM RECORD LUMINANCE SIGNAL PLAYBACK LUMINANCE SIGNAL HIFI HF COM RECORD COLOR SIGNAL Q4010 PLAYBACK COLOR SIGNAL BUFFER TUNER VIDEO SIGNAL AUDIO SIGNAL(REC) AUDIO SIGNAL (PB) CP4001 HF1 (R) Y/C/A/H.AMP IC4001 HF COM LA71170M-MPB HF2 (L) SP CH1 (R) Q4008 SP COM C COMB...
  • Page 69 MICON/POWER/OPERATION BLOCK DIAGRAM SW1001 SYSCON_TIMER_SERVO IC1001 OEC7041A TAB SW POWER FAIL(DC) POWER_FAIL_L X-OUT(12MHz) X1001 12MHz X-IN(12MHz) AT+5.6V HI-FI-ENV. HIFI_ENV. MSSEN-A HIFI-H.SW HIFI_H.SW MS_SEN A P. CON 5V Q1009 STEREO SEL ST SELECT HIFI VCR_A_MUTE VCR_A_MUTE V.REC_ST_H MSSEN-B SYSTEM RESET MS_SEN B IC1002 RESET-L 3 OUT...
  • Page 70 HIFI BLOCK DIAGRAM J701 HIFI AUDIO/H.AMP/DEM IC5501 AN3662FBP FRONT_VIDEO_IN REAR_A_IN_R INPUT SW Y/C/AUDIO/ REAR_A_IN_L H.AMP/IN/OUT H.AUDIO_OUT_R Y/C/AUDIO/ OUTPUT HF_COM H.AMP/IN/OUT H.AUDIO_OUT_L Y/C_AUDIO TU.A.OUT_1 NORMAL_A FM LIM VCO-FO LOGIC V. REC_ST-H BLOCK HIFI_ENV. P.CON 5V HIFI_H.SW MICON/POWER/ OPERATION VCR_A_MUTE P.CON 9V LOGIC ST_SELECT TUNER VIDEO SIGNAL...

  • Page 71: Printed Circuit Boards (Operation/Deck

    PRINTED CIRCUIT BOARDS OPERATION SOLDER SIDE W814 R763 W004 C353 C751 CD351 CD750_1 R772 W806 SW750 R351 SW797 SW796 SW794 D791 R771 D797 OS753 W002 R762 R766 R778 SW793 D796 D793 W803 W807 W802 W804 R761 R754 R773 R350 B701 D795 C781 DECK...

  • Page 72: Operation Schematic Diagram

    OPERATION SCHEMATIC DIAGRAM (OPERATION PCB) R766 100 1/2W Vout OS753 R778 R771 R772 R773 R774 PIC-28143TH5 1.5K 2.7K 5.6K W804 R775 R776 R777 R780 1.5K 2.7K FROM/TO I/O J351 CD750_1 (CP4201) CH2C070A HSJ2630-010070 REMOCON OUT AT+5V POWER ON L C354 R350 OTPB LED 16V KA...

  • Page 73: Deck Schematic Diagram

    DECK SCHEMATIC DIAGRAM LOADING MOTOR M101 (DECK PCB) S105 BOT SENSOR Q101 S106 RPT-38PB113 S101 S102 S103 S104 FROM/TO MICON CP101 52044-0445 LDM+ LDM- FROM/TO MICON CP102 173979-2 EOT SENSOR Q102 RPT-38PB113 PCB550 VE8851 CAUTION: SINCE THESE PARTS MARKED BY ATTENTION: LES PIECES REPAREES PAR UN ETANT...

  • Page 74: Printed Circuit Boards Syscon

    PRINTED CIRCUIT BOARDS SYSCON Q4204 Q1006 C1075 Q1023 Q1012 R1038 Q1014 Q1008 Q1010 Q1017 Q1018 R1037 Q4209 Q4206 Q4202 Q4205 R603 C655_1 Q4201 C1007 C657 Q1002 R1008 R1003 R1028 R1061 Q4210 R1062 R1083 C689 C616 Q1004 W144 Q4211 Q4203 C1076 W849 R617 C1027...
  • Page 75 PRINTED CIRCUIT BOARDS SYSCON...
  • Page 76 PRINTED CIRCUIT BOARDS SYSCON Q4204 Q1006 C1075 Q1023 Q1012 R1038 Q1014 Q1008 Q1010 Q1017 Q1018 R1037 Q4209 Q4206 Q4202 Q4205 R603 C655_1 Q4201 C1007 C657 Q1002 R1008 R1003 R1028 R1061 Q4210 R1062 R1083 C689 C616 Q1004 W144 Q4211 Q4203 C1076 W849 R617 C1027...

  • Page 77: Y/C/Audio/Head Amp Schematic Diagram

    Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM R4029 (SYSCON PCB) TO SOUND AMP P.CON+5V S825X FROM POWER D4006 P.CON+5V[A] W818 11EQS04N C4108 R4005 P.CON+10V Y/C_AUDIO 6.3V C4080 FROM/TO I/O 1.5K BUFFER 6.3V GND_1 FROM/TO HIFI C4001 Q4008 C4056 R4074 2SC2412K FRONT_VIDEO_IN NORMAL_A R4044 0.056 B 1.8K 0.1 B...

  • Page 78: Micon Schematic Diagram

    MICON SCHEMATIC DIAGRAM (SYSCON PCB) D1011 SB10-03A3 D1006 FROM/TO POWER SERVICE SB10-03A3 TP1001 AT+5.6V R1032 P.CON+12V POWER_FAIL[DC] R1059 VCR_POWER_H BUFFER CAP_MID_H Q1016 CAP_VCO 2SC2412K C1055 R1001 330P CH MOTOR_GND R1029 X_RAY X-RAY SW R1057 3.3K H.SW BUFFER Q1023 P.CON+5V[A] R1045 TP1002 Q1015 4.7K...

  • Page 79: Chroma/If Schematic Diagram

    CHROMA/IF SCHEMATIC DIAGRAM (SYSCON PCB) FROM/TO MICON VCR_POWER_H TV_POWER_H R654 L612 D606 P.CON+5.6V[A] 100K R655 22uH 11E1N OSD_R W845 6.8K OSD_G L602 R616 OSD_B R629 15uH BUFFER OSD_BLK Q604 AFT_M BUFFER L611 2SC2412K C674 Q602 BUFFER X_RAY 47uH 2SA1037AK Q603 82P CH 2SC2412K IIC_OFF...

  • Page 80: Hifi Schematic Diagram

    HIFI SCHEMATIC DIAGRAM (SYSCON PCB) C5521 R5518 0.22 B 2.7K C5514 0.1 B FROM/TO I/O HIFI AUDIO/H.AMP/DEM FRONT_A_IN_R IC5501 FRONT_A_IN_L AN3662FBP REAR_A_IN_R REAR_A_IN_L C5506 0.1 B C5540 0.015 B DEM_BLK H_AUDIO_OUT_R ZZ-PROM HIFI ENV PILOT LOGIC H_AUDIO_OUT_L TP5501 C5507 0.1 B C5541 0.22 B INPUT MUTE VCO-F0...

  • Page 81: In/Out Schematic Diagram

    IN/OUT SCHEMATIC DIAGRAM (SYSCON PCB) ON TIMER LED SW Q4201 DTC114EKA W804 LED SW OTPB Q4205 LED SW DTC114EKA Q4202 DTC114EKA PLAY LED SW T-REC Q4209 LED SW DTC114EKA Q4206 DTC114EKA W825 TV POWER LED SW W821 Q4204 DTC114EKA FROM/TO SOUND AMP W823 SP_OUT_R SOUND_R+...

  • Page 82: Power Schematic Diagram

    POWER SCHEMATIC DIAGRAM (SYSCON PCB) TO Y/C/A/H.AMP CAP MID VCC DRIVER P.CON+5V[A] Q1011 P.CON+10V 2SD2396 D1010 C1004 29.0 DRIVER 29.0 P.CON 5V DRIVER 1N4005E Q1010 Q1019 DTA124EKA 2SB892 W806 P.CON+5V[A] R1035 FROM/TO MICON 1.8K CAP VCC ADJ P.CON+5V[A] Q1012 AT+5.6V 2SC2412K FROM TV POWER CAP_MID_H...

  • Page 83: Sound Amp Schematic Diagram

    SOUND AMP SCHEMATIC DIAGRAM (SYSCON PCB) SOUND_AMP IC352 AN7522 HS352 763WAA0027 W819 FROM/TO I/O SOUND_L+ C350 SOUND_R+ SP_OUT_R SP_OUT_L FROM CHROMA/IF B301 SOUND+B BL01RN1-A63 C354_1 1000 SOUND_GND FROM MICON R353 TV_POWER_H R359 TV_A_MUTE MUTE Q350 2SC2412K SDA_A SCL_A S816X S816Y C302 R306 FROM/TO I/O...

  • Page 84: Printed Circuit Boards (Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT W006 CP820 W047 HS503 C511_1 CP810 R423 C520_1 CP804 W012 W822 D536 S803X W817 IC505 W010 IC504 IC503 C537 R531 W027 S803Y W843 W823 D519 R519 C521 W816 C519 W825 R460 R520 C523_1 C527 C422_1 C438 W021 C516 D508...

  • Page 85: Deflection Schematic Diagram

    DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) V.OUTPUT IC401 LA7840 THERMAL PUMP UP PROTECTION 14.2 23.5 22.8 TO DY C412 500V 390P CP401 B05B-DVS C409 0.0022 M R404 R413 R416 3.3K FROM/TO CHROMA/IF CP820 (CP601) 8283_1112_00_000 SOUND GND SOUND+B CC004 HS401 TP-1S-05 VCR POWER_H 763WSA0004 TV POWER_H...

  • Page 86: Tv Power Schematic Diagram

    TV POWER SCHEMATIC DIAGRAM (MAIN PCB) TV.POWER_H P.CON+125V 5A 125V 2.5A 250V 4A 125V 3A 125V 127.0 127.5 D532 R531 CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, 127.0 +B 100V DRIVE 11E1N 100V DRIVE REPLACE ONLY WITH THE SAME TYPE FUSE 5A 125V Q503 6V POWER REG...

  • Page 87: Crt Schematic Diagram

    CRT SCHEMATIC DIAGRAM (CRT PCB) 132.9 104.1 132.8 132.5 TP801 R802 FROM CHROMA/IF J801 HPS3200-010501 CP850 (CP602) 12K 2W 8283_0512_00_000 CUT OFF R807 W803 132.5 G.OUT 2.7K 1/4W RED AMP R.OUT Q804 B.OUT 2SC4217 R811 4.7K TP802 R805 12K 2W 132.1 GREEN AMP Q805...

  • Page 88: Interconnection Diagram

    INTERCONNECTION DIAGRAM CAUTION: SINCE THESE PARTS MARKED BY CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY ATTENTION: LES PIECES REPAREES PAR UN ETANT DANGEREUSES AN POINT DE VUE SECURITE N’UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES NOTE: THIS INTERCONNECTION DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE...

  • Page 89: Waveforms

    WAVEFORMS TV POWER Y/C/AUDIO/HEAD AMP 6 50V. 10µs/div 11 REC 1 5.0V 0.1ms/div 0.5V. 0.2ms/div DEFLECTION 2 2.0V 20µs/div 50V. 10µs/div 100mV. 0.2ms/div DEFLECTION 8 10V. 10ms/div 200mV. 10ms/div 200mV. 0.2ms/div TV POWER 200mV. 20µs/div 2V. 10µs/div 0.5V 20µs/div 50V. 10µs/div 10 0.5V 5µs/div 200mV.
  • Page 90 WAVEFORMS 1V. 0.5ms/div 100mV. 10µs/div 1V. 5ms/div 5V. 20µs/div 2V. 5ms/div 0.5V. 0.5ms/div 20mV. 5µs/div 1V. 10ms/div 200mV. 5ms/div MICON IN/OUT 1V. 2ms/div 0.5V. 10µs/div 2V. 5ms/div 30 POWER ON 200mV 20µs/div 1V. 20µs/div 0.5V. 0.5ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 91: Sound Amp

    WAVEFORMS CHROMA/IF 31 200mV. 1ms/div 33 200mV. 10µs/div 34 50mV. 10µs/div 35 200mV. 10µs/div SOUND AMP 100mV. 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 92: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB) L503 V801 FB401 PCB070 (MAIN PCB) SP302 PCB030 (OPERATION PCB) SP301 K1-1...
  • Page 93 MECHANICAL EXPLODED VIEW TU601 PCB010 (SYSCON PCB) K1-2...

  • Page 94: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION Q'TY REF. NO. PART NO. DESCRIPTION Q'TY S5-600-1J7-200 CABINET,FRONT ASS'Y ---- FELT SHEET ---- SHIELD,CASE HEAD AMP ASS'Y ---- LABEL,ENEGY STAR ---- PLATE,EARTH-SYSCON S2-A97-A40-770 WASHER 9.7*14*T0.7 S3-5WP-D06-800 BUTTON,REC S3-004-952-070 NUT (VOLUME NUT 3/8 INCH) ---- HEAT SINK ----...

  • Page 95: Chassis Exploded View (Top View)

    CHASSIS EXPLODED VIEW (TOP VIEW) M2003 UN4001 H5001 H5002 M101 PCB550 (DECK PCB ASS'Y) NOTE: Applying positions AA, AB, AC, AD and BA for CLASS PART NO. MARK the grease or oil are displayed for this section. GREASE G-555G Check if the correct grease or oil is applied for G-488M each position.

  • Page 96: Chassis Exploded View (Bottom View)

    CHASSIS EXPLODED VIEW (BOTTOM VIEW) M2001 NOTE: Applying positions AA, AB, AC, AD and BA for CLASS PART NO. MARK the grease or oil are displayed for this section. GREASE Check if the correct grease or oil is applied for G-555G each position.

  • Page 97: Chassis Replacement Parts List

    CHASSIS REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION Q'TY REF. NO. PART NO. DESCRIPTION Q'TY ---- ADECK ASSY A55901B420A S5-OP9-006-860 TAPE GUIDE R S5-OP9-007-070 COVER,SENSOR L S5-OA5-000-220 AHC ASS'Y S5-OP9-006-880 LEVER,FLAP S5-OP2-002-700 BELT,CAPSTAN S5-OP9-006-900 CASS HOLDER S5-OP9-007-100 LEVER,REC S5-OP9-006-910 LOCKER,L S5-OP5-000-830 BASE,AC HEAD S5-OP9-006-920 LOCKER,R S5-OP8-003-240 SPR,AC HEAD...

  • Page 98: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION SYSCON PCB ASS'Y *** CAPACITORS *** *** RESISTORS *** C4062 87-015-075-040 CAP,E 10-16V C4063 87-015-695-080 CAP,E 1-50V R640 S4-X5T-647-2F0 RES,M 4.7K-1/6W C4067 87-015-683-080 CAP,E 33-16V ! R1005 S6-150-12R-7J0 RES,FUSE 2.7-1W C4068 87-010-403-080...
  • Page 99 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** ICS *** *** COILS *** IC301 87-A20-312-010 IC,M62420SP L610 S3-360-203-880 COIL,V IFT ! IC352 S0-FSP-752-200 IC,AN7522 L611 87-003-149-080 COIL,47UH IC604 S0-3FE-814-B00 IC,LA76814BM-MPB L612 87-005-688-080 COIL,22UH IC1001 S5-6F5-704-1A0 IC,OEC7041A L1001 87-A50-040-010...
  • Page 100 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** DIODES *** *** CAPACITORS *** D791 S0-21M-2Q1-200 LED,EQ-552-F1T ! C431 87-016-373-080 CAP,E 10-250V D792 S0-21M-2Q1-200 LED,EQ-552-F1T C432 S6-13T-147-4J0 CAP,M 0.47-100V TF D793 S0-21M-2Q1-200 LED,EQ-552-F1T ! C433 S5-EZT-822-0M0 CAP,E 22-100V D795 S0-21M-5Q1-500...
  • Page 101 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** TRANSISTORS *** *** CAPACITORS *** ! Q405 SC-3T0-227-100 TR,2SC2271(D,E)-AE C801 S0-34B-N71-3K0 CAP,CER 0.001-2KV ! Q406 SD-UQ0-259-900 TR,2SD2599 C820 87-016-322-080 CAP,E 1-250V ! Q501 SC-3T0-290-900 TR,2SC2909 ! Q502 SA-3T1-371-A00 TR,2SA1371 *** TRANSISTORS ***...
  • Page 102 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 737004 Printed in Singapore...

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