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Aiwa VX-S205 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 ......................
TV SYSTEM ........................................
HORIZONTAL RESOLUTION ............
ANTENNA INPUT ...............................
VCR SECTION
OPERATING TEMPERATURE ...........
VIDEO RECORDING SYSTEM ..........
VX-S205
BASIC TAPE MECHANISM : OVD-6
SPECIFICATIONS
120V AC, 60Hz
109W
25 kg (55 lbs.)
574 mm (W) x 480 mm (D) x
502 mm (H)
(22 5/8 x 19 x 19 7/8 in.)
406 mm (W) x 305 mm (H)
(16 x 12 1/8 in.)
508 mm (diagonal) (20 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
M
230 lines
75 ohms, unbalanced
5°C to 40°C
Rotary 2 head helical
scanning system
S/M Code No. 09-995-330-8N1
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 .................................
•
Design and specifications are subject to change without
notice.
U
NTSC color system, 525 lines,
60 fields
Azimuth 2 head
VHS video cassette
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
48dB (nominal: tape)
–8.2dBs, 50K ohm
–8.2dBs, less than 50K ohm
3 tracks (Hi-Fi sound 2 tracks,
Normal sound 1 track)
Approx. 2 minutes 15 seconds
with T-120 tape
Approx. 1 minutes 48 seconds
with T-120 tape

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  • Page 1 VX-S205 SERVICE MANUAL INTEGRATED COLOR TV/STEREO BASIC TAPE MECHANISM : OVD-6 VIDEO CASSETTE RECORDER SPECIFICATIONS GENERAL POWER REQUIREMENTS ....120V AC, 60Hz VIDEO SIGNAL SYSTEM ....NTSC color system, 525 lines, POWER CONSUMPTION ....109W 60 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) (CP4201, CP4202, CP303, CP501, CP502 and CP401). Remove the 2 screws 1.
  • Page 6 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 screw 3.

  • Page 7: Removal Of Deck Parts

    DISASSEMBLY INSTRUCTIONS NOTE 2. REMOVAL OF DECK PARTS 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 8 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 9 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 Ass'y. (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 10 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 11 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 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: 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 16: 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 17 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 18: 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 19: 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 20: Preparation For Servicing

    PREPARATION FOR SERVICING Basic Servicing Position (In case of needing to check on all blocks) Unplug the connector CP4201, CP4202, CP303 and CP502, then remove the TV/VCR Block from the set. Unplug the connector CP810, CP820, CP850, CP804 and CD401, then remove the Main PCB from the VCR Block. Connect as shown in the below figure using the Service Fixture.
  • Page 21 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, Degause circuit will not operate.) L503 (2 Pin) VHS Tape Main PCB...

  • Page 22: Mechanical Adjustments

    MECHANICAL ADJUSTMENTS 1-2: CONFIRMATION AND ADJUSTMENT OF TENSION 1. CONFIRMATION AND ADJUSTMENT POST POSITION Read the following NOTE before starting works. Set to the PLAY mode. • Place an object which weighs between 450g~500g on Adjust the Tension Adjust until the length from the edge the Cassette Tape to keep it steady when you want to of the Tension Arm to the stdandard line of the Main 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 (YG6260M). (To prevent the damage to IC's and transistors.) CH-1 Fig.
  • Page 27 ELECTRICAL ADJUSTMENTS (TV SECTION) 2-10: SUB COLOR (TV) Receive the color bar pattern. (RF Input) 2-5: CONSTANT VOLTAGE Connect the synchro scope to TP801. Using the remote control, set the brightness and Using the remote control, set the brightness, contrast, contrast to normal position.
  • Page 28 ELECTRICAL ADJUSTMENTS 2-16: VERTICAL LINEALITY Receive the monoscope pattern. Using the remote control, set the brightness and contrast to normal position. Activate the adjustment mode display of Fig. 1-1 and press the channel button (1) on the remote control. The Fig. 2-6 appears on the display. Press the channel button (5) on the remote control.

  • Page 29: Electrical Adjustment Parts Location Guide

    ELECTRICAL ADJUSTMENTS 3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (VCR SECTION) TP1001 C1003 TP1002 TP4001 CP603 TU601 L610 TP601 TP4201 J4201 SYSCON PCB D2-4...
  • Page 30 ELECTRICAL ADJUSTMENTS (TV SECTION) J801 TP803 TP801 CRT PCB VR502 TP401 T501 FOCUS VOLUME FB401 SCREEN VOLUME MAIN PCB D2-5...

  • Page 31: Purity And Convergence Adjustments

    ELECTRICAL ADJUSTMENTS 4-3: STATIC CONVERGENCE 4. PURITY AND 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 32: Troubleshooting Guide

    TROUBLESHOOTING GUIDE (TV SECTION) POWER DOES NOT TURN ON (1) When turning on the Check ICP502, Q507 and the Is the voltage at pin 3 power switch, does the peripheral circuit. of IC502 DC5.2V ? LED light ? Check pin 28 of IC1001 and the peripheral circuit.
  • Page 33 TROUBLESHOOTING GUIDE POWER DOES NOT TURN ON (2) Is CP810 inserted ? Insert CP810. Check the circuit between Is the voltage at C507 Is F501 broken ? F501, C507 and R501. about 144V ? Check IC501 and check the Replace F501. peripheral circuit.
  • Page 34 TROUBLESHOOTING GUIDE NO PICTURE Insert CP602. Is CP602 inserted ? Is the video signal at pin Check pin 29 of IC4001, pin 54 of 52 of IC604 input ? IC604 and the peripheral circuit. Is the voltage at pin 53 Check P.
  • Page 35 TROUBLESHOOTING GUIDE Is the signal at pin 1 Check peripheral circuit of Q406. of CP401 ? Do pins 17, 18 and 19 Check pin 11 of IC604 line. of IC604 feed signal ? Check peripheral circuit of CRT PCB.
  • Page 36 TROUBLESHOOTING GUIDE GOOD PICTURE BUT NO SOUND Is the voltage at CP303 Check SPEAKER and OPERATION changed with the volume PCB. up or down key? Is the voltage at pin 12 Is ICP505 broken ? Check D509 and the peripheral circuit. of IC351 DC8.2V ? Replace ICP505.
  • Page 37 TROUBLESHOOTING GUIDE NO COLOR Is the color set to normal ? Adjust the color. Receive the color signal. Is the color signal received ? Is the chroma signal at pin Check Q603 and the peripheral 54 of IC604 input ? circuit.
  • Page 38 TROUBLESHOOTING GUIDE ONLY A LINE APPEARS Is the normal signal at Check peripheral circuit of IC604. pin 5 of IC401 input ? Is the voltage at pin 4 Check R409 and CHROMA +9V line. of IC401 DC0.9V ? Is the voltage at pin 6 Check D411, R452 and FB401.
  • Page 39 TROUBLESHOOTING GUIDE (VCR SECTION) PLAYBACK CHANGES TO STOP Insert a cassette and press PLAY button. Does Playback change to Check TAPE LOADING, CAPSTAN Stop about 3 seconds DD UNIT and CYLINDER UNIT. later ? Does Playback Check REEL SENSOR and change to Stop about CAPSTAN BELT.
  • Page 40 TROUBLESHOOTING GUIDE NO PLAYBACK PICTURE Is the voltage at pin 55 of Does E-E appear on the Check Power circuit. IC4001 5V ? Monitor TV ? Is there PB Y/C signal Check PB Y/C at pin 74 of IC4001 and at TP4001 ? the connection of the CYLINDER.
  • Page 41 TROUBLESHOOTING GUIDE NO COLOR DURING PLAYBACK Check HEAD AMP BLOCK. Does FM ENVELOPE Replace IC4001. appear at TP4001 ? Does CHROMA signal Check R4080, C4032 and at pin 72 of IC4001 ? peripheral circuit. Does COMPOSITE Replace IC4001. signal appear at pin 43 of IC4001 ? Check TV Block.
  • Page 42 TROUBLESHOOTING GUIDE PLAYBACK PICTURE IS NOISY (EVEN AFTER CLEANING HEADS) Check HEAD AMP and interchange Is FM signal at TP4001 more than 200mVp-p ? adjustments. Is FM signal at pin 72 of Check pin 74 of IC4001 and IC4001 200mVp-p ? peripheral circuit.
  • Page 43 TROUBLESHOOTING GUIDE NO COLOR DURING SELF RECORDING AND PLAYBACK Does VIDEO signal Check J4201, J701 and VIDEO appear at pins 36 input circuit. and 34 of IC4001 ? Does CHROMA signal Check pin 71 of IC4001. appear at TP4001 during Replace IC4001.
  • Page 44 TROUBLESHOOTING GUIDE NO NORMAL AUDIO IN PLAYBACK MODE Is sound heard on E-E ? Refer to section "NO E-E". Check AUDIO HEAD for debris or stains. Does AUDIO signal appear Check the connector from AUDIO at pin 4 of IC4001 ? HEAD is fully inserted to CP4005.
  • Page 45 TROUBLESHOOTING GUIDE CAPSTAN DD MOTOR NOT ROTATING In playback, is the voltage at pin 5 of Check POWER circuit. CP1004 DC12V ? Is the voltage at pin 8 Check POWER circuit. of CP1004 DC5V ? In playback, is the voltage at Replace IC1001.
  • Page 46 TROUBLESHOOTING GUIDE NOMAL AUDIO CAN NOT BE RECORDED Is the voltage at pin 2 Check POWER BLOCK. Is BIAS waveform appeared ? of L4003 5V ? L4003 is broken or shorted. Check peripheral circuit. Is there AUDIO signal at Check the circuit between audio out of pins 76 of IC4001 ? Tuner and pins 61, 4, 15, 48 of IC5501.
  • Page 47 TROUBLESHOOTING GUIDE CASSETTE CAN BE LOADED BUT UNIT HAS NO FUNCTIONS Does mode indicator Check LOADING MOTOR and the appear in Display ? peripheral parts. Does VCR operate with Check IC1001. the remote control ? Is the voltage at pin 6 of Check the circuit between pin 6 of CD757 when pressing the CD757 and pin 9 of IC1001.
  • Page 48 TROUBLESHOOTING GUIDE RECORDING MECHANISM WORKS, BUT NO VIDEO RECORDED FROM INPUT JACK OR TUNER Does VIDEO signal Check the circuit from VIDEO input appear at pins 34, jack to IC4001 and from Tuner Pack 36 or 38 of IC4001 ? to IC4001.
  • Page 49 TROUBLESHOOTING GUIDE NO E-E (NO VIDEO AND AUDIO FROM TUNER) Does J4201 have a Replace J4201. connection trouble ? Do the following voltages Check POWER BLOCK. appear on TU601, 30V at pin 9 and 5V at pin 7 ? Is there IF signal at pins Check CF601 and peripheral circuit.
  • Page 50 TROUBLESHOOTING GUIDE CYLINDER NOT ROTATING DURING PLAYBACK AND RECORDING Is the voltage at pin 2 of Check P. CON 12V line and CP1005 about DC12V ? POWER BLOCK. In playback, is the voltage at pin 5 of CP1005 about Replace CYLINDER MOTOR. DC1.5V ? In playback, is the voltage at pin Check R1020 and R1028.
  • Page 51 TROUBLESHOOTING GUIDE AUDIO SHAKES Replace AUDIO HEAD. Is AUDIO HEAD scratched ? Does pin 90 of IC1001 outputs 1Vp-p and 4Vp-p Replace CAPSTAN DD MOTOR. square wave ? In playback, is the voltage at pin 4 of CP1004 2.8V ? Is the voltage at Check peripheral components pin 4 of CP1004 3.3V when you of IC1001.
  • Page 52 TROUBLESHOOTING GUIDE CASSETTE TAPE IS NOT ACCEPTED When cassette is not inserted, is the voltage Check EOT, BOT and Photo sensor. low at Emitter of Q102 and Q101 ? When a cassette is inserted, is the voltage Replace LOADING MOTOR. between pins 3 and 4 of CP1006 12V ? When a cassette is...
  • Page 53 TROUBLESHOOTING GUIDE WHEN INSERTING CASSETTE, IT EJECTS IMMEDIATELY Does this same problem Defective CASSETTE or appear when using CASSETTE LOADING BLOCK. another cassette tape ? When inserting a cassette, Replace EOT PHOTO does Emitter of EOT return TRANSISTORS. to LOW ? Is pin 3 of IC1001 LOW ? Check R1011 circuit.
  • Page 54 TROUBLESHOOTING GUIDE FF/REW DO NOT WORK When the FF (or REW) is When the FF (or REW) is pressed, does the FF (or Check pin 72 of IC1001 lines. pressed, does the voltage at REW) indicator appear on Replace IC1001. pin 11 of IC1001 change to screen ? high (low in REW) ?
  • Page 55 TROUBLESHOOTING GUIDE TAPE LOADING IS OK, BUT UNLOADS IMMEDIATELY Is the voltage at pin 2 of Check Power circuit. Does CYLINDER rotate ? CP1005, unregulated at 12V ? In playback, is the Is the voltage at pin 77 of voltage at pin 5 of IC1001 1.8V ? CP1005 1.3V ? Check R1028 and R1020.
  • Page 56 TROUBLESHOOTING GUIDE PLAYBACK PICTURE JITTERS VERTICALLY Does tracking noise appear in the picture ? By adjusting the manual tracking UP/DOWN Check P/B ENVELOPE. 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 57 TROUBLESHOOTING GUIDE PLAYBACK PICTURE JITTERS HORIZONTALLY Is FG output level at pin Replace CYLINDER UNIT. 3 of CP1005 4Vp-p ? Is the voltage at pin 5 of CP1005 1.5V or Replace IC1001. When slowing CYLINDER, is the voltage about 5V ? Replace CYLINDER UNIT.
  • Page 58 TROUBLESHOOTING GUIDE WHEN PLAYBACK, FAST FORWARD OR REWIND MODE IS ACTIVATED, UNIT STOPS IMMEDIATELY Refer to section "CAPSTAN DD Does CAPSTAN DD MOTOR NOT ROTATING". MOTOR rotate ? Is CAPSTAN BELT normal ? Replace CAPSTAN BELT. Does REEL SENSOR PULSE Check Reel Sensor of Q1001 and signal appear at pin 79 of R1006.
  • Page 59 TROUBLESHOOTING GUIDE NO PB AUDIO (Hi-Fi) Is the voltage at pin 58 of Check Power circuit. Does audio appear on E-E ? IC5501 DC9V and pins 25 and 40 of IC5501 DC5V ? Check AUDIO HEAD for debris Is Hi-Fi ENVELOPE or stains.
  • Page 60 TROUBLESHOOTING GUIDE NO E-E AUDIO (STEREO) Does STEREO SOUND Check the circuit between pins signal appear at pins 53 53 and 57 of IC5501 and J4201. and 57 of IC5501 ? Is the voltage at pin 100 Check IC1001 and the peripheral of IC1001 high ? circuit.
  • Page 61 TROUBLESHOOTING GUIDE Hi-Fi AUDIO CAN NOT BE RECORDED Does FM LEVEL appear at between pin 8 and pin 9, also Clean the AUDIO HEAD. pin 7 and pin 8 of CP4001 during REC ? Is the voltage at pin 58 of IC5501 DC9V and pins 25 Check Power circuit.

  • Page 62: Ic Descriptions

    IC DESCRIPTION OEC7034A 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 63 IC DESCRIPTION OEC7034A 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. SD-IN(MONI) Not used.
  • Page 64 IC DESCRIPTION OEC7034A 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 65: Servo Timing Chart

    SERVO TIMING CHART IC1001 (OEC7034A) 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 • WAVEFORM CHANGES DEPENDED ON THE TAPE SPEED...

  • Page 66: 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 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 TU.A.OUT_1 HIFI Q603 J801...

  • 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 63 61 HF2 (L) SP CH1 (R) Q4008 SP COM...
  • Page 69 MICON/POWER/OPERATION BLOCK DIAGRAM SW1001 SYSCON_TIMER_SERVO IC1001 OEC7034A TAB SW POWER FAIL(DC) X-OUT(12MHz) POWER_FAIL_L 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 ST SELECT HIFI VCR_A_MUTE VCR_A_MUTE AT 10V V.REC_ST_H MSSEN-B Q1025 SYSTEM RESET MS_SEN B P.CON RESET-L...
  • 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 VCO-FO FM LIM LOGIC V. REC_ST-H BLOCK HIFI_ENV. P.CON 5V HIFI_H.SW MICON/POWER/ VCR_A_MUTE OPERATION P.CON 9V LOGIC ST_SELECT RECORD LUMINANCE SIGNAL...
  • Page 71 PRINTED CIRCUIT BOARDS OPERATION W806 W812 CD702 B351 C755 R352 CD757 CP701_A R351 W809 W003 R766_1 R758 D795 R771 R772 W803 C781 SW794 R777 R776 R775 R778 SW796 SW795 SW791 R774 R773 SW793 SW797 SW798 SW799 CP702 J351 J701_1 DECK CP101 CP102 R793...

  • Page 72: Operation Schematic Diagram

    OPERATION SCHEMATIC DIAGRAM (OPERATION PCB) (LED PCB) FROM/TO I/O CD757(CP4201) CH2A016A CP701_A CP701_B REMOCON OUT IMSA-9272B-210A-T IMSA-9162S-10C-T REMOCON OUT REMOCON OUT AT 5V REMOCON +B REMOCON +B POWER ON LED POWER ON LED POWER ON LED OTPB LED REC LED REC LED KEY A T-REC LED...

  • Page 73: Deck Schematic Diagram

    DECK SCHEMATIC DIAGRAM LOADING MOTOR M101 (DECK PCB) S105 BOT SENSOR S106 Q101 RPT-38PB113 S101 S102 S103 S104 FROM/TO MICON CP101(CP1006) 52044-0445 LDM+ LDM- FROM/TO MICON CP102(CP1002) 173979-2 EOT SENSOR Q102 RPT-38PB113 PCB550 VE8851 NOTE: THE DC VOLTAGE AT EACH PART WAS NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME CAUTION: SINCE THESE PARTS MARKED BY...

  • Page 74: Printed Circuit Boards Syscon

    PRINTED CIRCUIT BOARDS SYSCON Q4204 Q1006 R1065 C1075 Q1023 Q1012 Q1014 Q1010 Q1008 R1037 Q1017 Q1018 Q4206 Q4202 Q4205 R603 Q4201 C1077 R4232 Q1002 Q4210 R1003 C1056 R1061 Q1004 Q4211 C1076 W849 Q4203 C1027 R653 R612 R627 C1028 C661 R671 C616 R665 C1041...
  • Page 75 PRINTED CIRCUIT BOARDS SYSCON...
  • Page 76 PRINTED CIRCUIT BOARDS SYSCON Q4204 Q1006 R1065 C1075 Q1023 Q1012 Q1014 Q1010 Q1008 R1037 Q1017 Q1018 Q4206 Q4202 Q4205 R603 Q4201 C1077 R4232 Q1002 Q4210 R1003 C1056 R1061 Q1004 Q4211 C1076 W849 Q4203 C1027 R653 R612 R627 C1028 C661 R671 C616 R665 C1041...

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

    Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM (SYSCON PCB) R4029 FROM POWER S806Y P.CON+10V P.CON+5V R4005 Y/C_AUDIO C4080 1.5K FROM/TO I/O 6.3V FROM/TO HIFI BUFFER C4001 Q4008 C4056 0.1 B R4074 NORMAL_A W837 2SC2412K R4044 0.056 B 1.8K GND[HIFI] Y/C_AUDIO (S805) 1.8K FRONT_VIDEO_IN 15.6KHZ TRAP BUFFER HF_COM...

  • Page 78: Micon Schematic Diagram

    MICON SCHEMATIC DIAGRAM SERVICE (SYSCON PCB) TP1001 TUNER VIDEO SIGNAL D1011 DEFLECTION SIGNAL SB10-03A3 D1006 FROM/TO POWER CAPSTAN AFC SIGNAL SB10-03A3 CYLINDER AFC SIGNAL AT+5.6V R1032 P.CON+5V CYLINDER APC SIGNAL P.CON+12V R.SIGNAL POWER_FAIL[DC] G.SIGNAL R1059 VCR_POWER_H B.SIGNAL BUFFER CAP_MID_H Q1016 CAP_VCO 2SC2412K C1055...

  • Page 79: Power Schematic Diagram

    POWER SCHEMATIC DIAGRAM (SYSCON PCB) TO Y/C/A/H.AMP CAP MID VCC DRIVER P.CON+10V Q1011 C1004 P.CON+5V 2SD2396 D1010 29.0 P.CON 5V DRIVER 1N4005E Q1019 29.0 DRIVER Q1010 2SB892 W806 DTA124EKA R1035 FROM/TO MICON 1.8K CAP VCC ADJ AT+5.6V Q1012 FROM TV POWER CAP_MID_H R1065 P.CON+12V...

  • Page 80: In/Out Schematic Diagram

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

  • Page 81: Chroma/If Schematic Diagram

    CHROMA/IF SCHEMATIC DIAGRAM (SYSCON PCB) FROM/TO MICON VCR_POWER_H TV_POWER_H R654 L612 P.CON+5.6V[A] 100K 22uH OSD_R W845 OSD_G R655 R616 OSD_B BUFFER 5.6K Q602 OSD_BLK L602 2SA1037AK AFT_M L611 15uH C674 X_RAY 47uH BUFFER W838 82P CH Q603 2SC2412K FROM Y/C/A/H.AMP IIC_OFF TEST POINT AFT_R...

  • Page 82: Sound Amp Schematic Diagram

    SOUND AMP SCHEMATIC DIAGRAM (SYSCON PCB) HS351 763JAA0101 FROM/TO I/O C353 SOUND_L+ 1000 C357 SOUND_R+ 1000 SP_OUT_R SP_OUT_L FROM CHROMA/IF B301 SOUND+B BL01RN1-A63 SOUND_GND R359 FROM/TO MICON C351 TV_A_MUTE R353 50V KS TV_POWER_H S803X S803Y S804X S804Y FROM I/O C302 R306 C320 SOUND_GND...

  • Page 83: Hifi Schematic Diagram

    HIFI SCHEMATIC DIAGRAM (SYSCON PCB) C5521 R5518 0.22 B 2.7K C5514 0.1 B FROM/TO I/O FRONT_A_IN_R FRONT_A_IN_L HIFI AUDIO/H.AMP/DEM REAR_A_IN_R IC5501 REAR_A_IN_L AN3662FBP H_AUDIO_OUT_R H_AUDIO_OUT_L C5506 0.1 B C5540 0.015 B DEM_BLK ZZ-PROM PILOT LOGIC C5507 0.1 B C5541 0.22 B INPUT MUTE VCO-F0 75uS...

  • Page 84: Printed Circuit Boards (Main/Crt

    PRINTED CIRCUIT BOARDS MAIN/CRT W014 W006 CP820 C520_1 W047 W005 HS503 CP810 R423 CP804 W012 C511 W822 S809X W010 S802X W817 C537 IC503 W009 IC504 W837 W027 S802Y S810Y W836 W823 D519 S809Y R519 C523 W816 R520 R460 W825 C519 C527 C422 C438...

  • Page 85: Deflection Schematic Diagram

    DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) V.OUTPUT IC401 LA7840 THERMAL PUMP UP PROTECTION 14.2 23.5 22.8 FROM/TO DY C412 500V 390P CP401 B05B-DVS C409 0.022 M R404 R413 R416 5.6K CD001 CP01425A FROM/TO CHROMA/IF CD002 CP820(CP601) CP01425A 8283_1112_00_000 SOUND GND SOUND +B CC004 TP-1S-05 VCR POWER H...

  • Page 86: Tv Power Schematic Diagram

    TV POWER SCHEMATIC DIAGRAM (MAIN PCB) TV.POWER_H P.CON+125V 127.0 127.5 127.0 +B 100V DRIVE 5A 125V 2.5A 250V 4A 125V Q503 2SC4160 -OEC-YAC11 CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, RELAY DRIVE 100V DRIVE REPLACE ONLY WITH THE SAME TYPE FUSE 5A 125V Q504 Q502...

  • Page 87: Crt Schematic Diagram

    CRT SCHEMATIC DIAGRAM (CRT PCB) CC003 FROM CHROMA/IF TP801 CP850(CP602) R802 8283_0512_00_000 12K 2W R807 W803 CUT OFF G.OUT 2.7K 1/4W 132.5 R.OUT RED AMP Q804 B.OUT 2SC4217 104.1 132.5 132.8 R811 J801 CVT3275-5102 4.7K TP802 R805 12K 2W 132.1 GREEN AMP Q805 2SC4217...

  • Page 88: Interconnection Diagram

    INTERCONNECTION DIAGRAM J351 CP701B CP701A REMOCON OUT REMOCON +B J701 POWER ON LED REMOCON SENSOR REC LED OS753 T-REC LED DECK MECHA ASS’Y OPERATION AT 5V Vout PCB030 HALL MAIN ROTOR ON TIMER LED SENSOR COIL MAGNET FG SENSOR TE9972 PCB200 TE9973 L003...

  • Page 89: Semiconductor Base Connections

    SEMICONDUCTOR BASE CONNECTIONS DIODE CATHODE CATHODE ANODE ANODE 1SS133T-77 11E1N-TA1B2 10ELS2N-TA1B2 SID1050CM EM-553-F1T 20PIN 100PIN HZ11B3L TD 11ES1N-TA1B2 10ELS6TA1B2 EM-553-F9T M62420SP LA71170M-MPB HZ27-1L TD 1N4005E-G23 21DQ09N-TA2B1 SLZ-936C-07-S-T1 OEC7034A HZ30-1L TD GP15M-G23 RU2AM V1 64PIN HZ6A3L TD RD12FB-T7 AN3662FBP MTZJ5.1B T-77 MTZJ5.6B T-77 MTZJ6.2B T-77 MTZJ6.8B T-77...

  • Page 90: Waveforms

    WAVEFORMS Y/C/AUDIO/HEAD AMP TV POWER 1 5.0V 0.1ms/div 50.0V 20µs/div 11 PB 0.5V 0.5ms/div DEFLECTION 2 2.0V 20µs/div 7 50.0V 20µs/div 12 PB 100mV 1ms/div DEFLECTION 3 0.5V 5ms/div 10.0V 5ms/div 13 PB 50mV 0.5ms/div TV POWER 4 200mV 20µs/div 9 20.0V 0.1ms/div 14 PB 0.5V 20µs/div...
  • Page 91 WAVEFORMS 16 REC 21 PB 26 POWER ON 100mV 20µs/div 1.0V 0.5ms/div 0.5V 10ms/div 17 POWER ON 22 PB 27 POWER ON 0.5V 1ms/div 1.0V 5ms/div 20.0V 20µs/div 18 POWER ON 23 PB 28 POWER ON 50mV 1ms/div 1.0V 5ms/div 5.0V 5ms/div MICON IN/OUT...
  • Page 92 WAVEFORMS CHROMA/IF 31 POWER ON 0.5V 1ms/div 33 POWER ON 0.5V 20µs/div 34 POWER ON 200mV 20µs/div 35 POWER ON 10.5V 20µs/div SOUND AMP 36 POWER ON 200mV 1ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 93: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW J801 PCB110 (CRT PCB ASS'Y) L503 V801 FB401 PCB070 (MAIN PCB ASS'Y) SP302 PCB030 (OPERATION PCB ASS'Y) 118 127 PCB200 (LED PCB ASS'Y) SP301 120 119 L1-1...
  • Page 94 MECHANICAL EXPLODED VIEW IC351 TU601 PCB010 (SYSCON PCB ASS'Y) L1-2...

  • Page 95: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION Q'TY REF. NO. PART NO. DESCRIPTION Q'TY S5-490-1B7-200 CAB,FRONT ASS'Y S2-A97-A40-770 WASHER 9.7x14xT0.7 ----- SHIELD,CASE HEAD AMP ----- SHEET,CRT SERVICEMAN ----- PLATE,EARTH-SYSCON S4-1WU-A00-010 SPR,EARTH ----- SPR,EARTH HEAD AMP S3-004-952-070 NUT,(VOLUME NUT 3/8 INCH) ----- HEAT SINK S6-1WP-A01-450 HOLDER,FBT...

  • Page 96: 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 and BA for the CLASS PART NO. MARK grease or oil are displayed for this section. GREASE G-555G Check if the correct grease or oil is applied for each position.

  • Page 97: Chassis Exploded View (Bottom View)

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

  • Page 98: Chassis Replacement Parts List

    CHASSIS REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION Q'TY REF. NO. PART NO. DESCRIPTION Q'TY S5-OA5-000-220 AHC ASS'Y S5-OP9-006-860 TAPE GUIDE R S5-OP2-002-700 BELT,CAPSTAN S5-OP9-006-870 COVER,SENSOR L S5-OP9-006-890 LEVER,REC S5-OP9-006-880 LEVER,FLAP S5-OP5-000-830 BASE,AC HEAD S5-OP9-006-900 CASS HOLDER S5-OP8-003-240 SPR,AC HEAD S5-OP9-006-910 LOCKER,L S5-OA0-002-970 MAIN CHASSIS ASS'Y S5-OP9-006-920 LOCKER,R...

  • Page 99: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION SYSCON PCB ASS'Y *** CAPACITORS *** *** RESISTORS *** C1059 87-015-975-080 CAP,E 220-6.3V C1081 87-016-579-080 CAP,E 2200-16V R628 S4-X5T-610-3F0 RES,M 10K-1/6W C4006 87-010-379-080 CAP,E 22-16V R632 S3-X28-A10-1J0 RES,M 100-2W C4007 87-015-677-080 CAP,E 100-6.3V...
  • Page 100 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** DIODES *** *** TRANSISTORS *** D601 87-A40-523-080 ZENER,MTZJ9.1B T-7 Q4008 89-324-122-080 TR,2SC2412KT D603 87-020-465-010 DIODE,1SS133T Q4009 89-324-122-080 TR,2SC2412KT D604 87-020-465-010 DIODE,1SS133T Q4010 89-324-122-080 TR,2SC2412KT D605 S2-8T1-1ES-N10 DIODE,11ES1N-TA1B2 Q4011 89-110-372-080 TR,2SA1037AK...
  • Page 101 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** CONNECTORS *** *** OTHERS *** CP4004 S6-971-203-200 CONN,PWB SIDE CD702 S6-CH2-B02-7A0 CORD,CONN CH2B027A CP4201 S6-9E2-A01-290 CONN,PWB SIDE CD757 S6-CH2-A01-6A0 CORD,CONN CH2A016A CP4202 S6-9E2-B01-290 CONN,PWB SIDE MAIN PCB ASS'Y *** FILTER *** *** RESISTORS *** CF601...
  • Page 102 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION REF.NO. PART NO. DESCRIPTION *** CAPACITORS *** *** TRANSFORMERS *** ! C540 87-010-964-010 CAP,E 10-160V ! FB401 S4-322-100-7A0 TRANS,FLYBACK 3221007A ! C541 87-010-964-010 CAP,E 10-160V C560 S0-JBB-07H-3K0 CAP,CER 0.0022-2KV T401 S3-305-Y00-2S0 TRANS,H DRIVE 305Y002S ! T501 S4-814-004-7W0 TRANS,SWITCHING 8140047W...
  • Page 103 ELECTRICAL REPLACEMENT PARTS LIST REF.NO. PART NO. DESCRIPTION *** CRT SOCKET *** ! J801 S6-6C1-300-150 SOCKET,CRT CVT3275-510 LED PCB ASS'Y *** DIODES *** D791 S0-213-2Q1-300 LED,SLZ-936C-07 D792 S0-213-2Q1-300 LED,SLZ-936C-07 D793 S0-213-2Q1-300 LED,SLZ-936C-07 D794 S0-21M-5Q1-500 LED,EM-553-F1T *** CONNECTOR *** CP701B S6-9J2-A05-490 CONN,IMSA-9162S-10 *** OTHER *** OS753...
  • Page 104 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 Printed in Singapore 920074...

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