Aiwa VX-D2150 Service Manual
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Aiwa VX-D2150 Service Manual

Aiwa VX-D2150 Service Manual

Integrated color tv /video cassette recorder
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SERVICE MANUAL

INTEGRATED COLOR TV /VIDEO
CASSETTE RECORDER
POWER REQUIREMENTS ............
POWER CONSUMPTION ..............
WEIGHT .........................................
DIMENSIONS .................................
PICTURE TUBE .............................
TUNER SYSTEM ...........................
CHANNEL COVERAGE .................
TV SYSTEM ...................................
HORIZONTAL RESOLUTION .......
OPERATING TEMPERATURE ......
VIDEO RECORDING SYSTEM .....
VIDEO SIGNAL SYSTEM ..............
VIDEO HEAD .................................
USABLE CASSETTES ...................
SPECIFICATIONS
230V AC, 50Hz
60W
Standby 5W
Approx.25.5 kg (56.1 lbs.)
574 mm (W) x 488.5 mm (D) x
514.5 mm (H)
(22 5/8 x 19 1/4 x 20 3/8 in.)
21 in. (50.8 cm "V"), 90 degree
deflection
Frequency synthesized tuners
UHF: 21 to 69
I
240 lines
5°C to 40°C
Rotary 2 head helical scanning system
PAL colour signal, 625 lines, 50 fields
Azimuth 2 heads
VHS video cassettes
S/M Code No. 09-028-362-4N1
VX-D2150
BASIC TAPE MECHANISM : OVD-7
TAPE SPEED ...................................
RECORDING/PLAYBACK TIME .....
VIDEO INPUT ...................................
VIDEO OUTPUT ..............................
VIDEO S/N .......................................
AUDIO INPUT ..................................
AUDIO OUTPUT ..............................
AUDIO TRACK .................................
•
Design and specifications are subject to change without
notice.
K(S)
PAL
SP: 23.39 mm/sec.
LP: 11.69 mm/sec.
NTSC (playback SP only)
33.35 mm/sec.
PAL
SP: 5 hours max. with E-300 tape
LP: 10 hours max. with E-300 tape
NTSC (playback SP only)
3 hours 30 minutes max. with T-210
tape
1.0Vp-p, 75 ohm, unbalanced
1.0Vp-p, 75 ohm, unbalanced
53dB (nominal)
SCART: –3.8 dBs, 50K ohm
RCA: –3.8 dBs, 50K ohm
SCART: –3.8 dBs less than 1K ohm
1 track (mono)

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Summary of Contents for Aiwa VX-D2150

  • Page 1: Service Manual

    VX-D2150 K(S) SERVICE MANUAL INTEGRATED COLOR TV /VIDEO BASIC TAPE MECHANISM : OVD-7 CASSETTE RECORDER SPECIFICATIONS POWER REQUIREMENTS .... 230V AC, 50Hz TAPE SPEED ........POWER CONSUMPTION ....SP: 23.39 mm/sec. Standby 5W LP: 11.69 mm/sec. WEIGHT ......... Approx.25.5 kg (56.1 lbs.) NTSC (playback SP only) DIMENSIONS .........

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ................................COVER TABLE OF CONTENTS ..............................A1-1 SERVICING NOTICES ON CHECKING ..........................A2-1 TAPE REMOVAL METHOD AT NO POWER SUPPLY ...................... A2-2 DISASSEMBLY INSTRUCTIONS REMOVAL OF MECHANICAL PARTS AND P.W. Boards ....................B1-1, B1-2 REMOVAL OF DECK PARTS ............................B2-1~B2-6 REMOVAL OF ANODE CAP ............................

  • 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: Tape Removal Method At No Power Supply

    TAPE REMOVAL METHOD AT NO POWER SUPPLY Remove the VCR block from the main unit. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.) Remove the screw 1 of the Deck Chassis and remove the Loading Motor. Rotate the Pinch Roller Cam in the direction of the arrow by hand to slacken the Video Tape. Rotate the Clutch Ass'y either of the derections to wind the Video Tape in the Cassette Case.

  • Page 5: 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.W. Boards Disconnect the following connectors: 1-1: BACK CABINET (Refer to Fig. 1-1) (CP353, CP401, CP501 and CP502). Remove the 6 screws 1. Unlock the support 2.
  • Page 6 DISASSEMBLY INSTRUCTIONS 1-5: DECK SHIELD PLATE (Refer to Fig. 1-5) Remove the 2 screws 1. Remove the 4 screws 2. Remove the screw 3. Remove the Deck Shield Plate in the direction of arrow (A). AC Head Cover Remove the 3 screws 4. Deck Chassis Remove the Shield Plate Bottom, Shield Plate Bottom (R), Shield Plate Bottom (L) in the direction of arrow (B).

  • Page 7: Removal Of Deck Parts

    DISASSEMBLY INSTRUCTIONS 2. REMOVAL OF DECK PARTS NOTE In case of the Locker R installation, check if the two 2-1: TOP BRACKET (Refer to Fig. 2-1) positions of Fig.2-3-B are correctly locked. Extend the 2 supports 1. When you install the Cassette Side R, be sure to move Slide the 2 supports 2 and remove the Top Bracket.
  • Page 8 DISASSEMBLY INSTRUCTIONS 2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A) 2-7: TENSION ASS'Y (Refer to Fig. 2-7-B) Remove the screw 1. Turn the Pinch Roller Cam clockwise so that the Remove the Loading Motor. Tension Holder hook is set to the position of Fig. 2-7-A Remove the Worm.
  • Page 9 DISASSEMBLY INSTRUCTIONS 2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A) Remove the T Brake Spring. Idler Gear Turn the T Brake Arm clockwise and bend the hook Idler Arm Ass'y section to remove it. Unlock the 2 supports 1 and remove the T Brake S Reel Band.
  • Page 10 DISASSEMBLY INSTRUCTIONS 2-10: CASSETTE OPENER/PINCH ROLLER BLOCK/ P5 ARM ASS'Y (Refer to Fig. 2-10-A) Unlock the support 1 and remove the Cassette Opener. Remove the Pinch Roller Block and P5 Arm Ass'y. Cassette Opener Spring Position Fig. 2-11-B 2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12) Pinch Roller Block Remove the screw 1.
  • Page 11 DISASSEMBLY INSTRUCTIONS 2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A) 2-15: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR (Refer to Fig. 2-15-A) Remove the Capstan Belt. Remove the 3 screws 1. Remove the E-Ring 1, then remove the Main Cam. Remove the E-Ring 2, then remove the Pinch Roller Remove the Capstan DD Unit.
  • Page 12 DISASSEMBLY INSTRUCTIONS NOTE 2-18: CASSETTE GUIDE POST/INCLINED BASE S/T UNIT/P4 CAP (Refer to Fig. 2-18-A) 1. When you install the Loading Arm S Unit, Loading Arm T Unit and Main Loading Gear, align each marker. Remove the P4 Cap. Unlock the support 1 and remove the Cassette Guide (Refer to Fig.

  • Page 13: Removal Of Anode Cap

    DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction 3. REMOVAL OF ANODE CAP to 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 14: Removal And Installation Of Flat Package Ic

    DISASSEMBLY INSTRUCTIONS REMOVAL AND INSTALLATION OF When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using FLAT PACKAGE IC a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 4-3.) REMOVAL NOTE Put the Masking Tape (cotton tape) around the Flat...
  • Page 15 DISASSEMBLY INSTRUCTIONS INSTALLATION When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thin- Take care of the polarity of new IC and then install the tip Soldering Iron. (Refer to Fig. 4-8.) new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.

  • Page 16: 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 17 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 18: 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 for more than 2 seconds.

  • Page 19: Preventive Checks And Service Intervals

    PREVENTIVE CHECKS AND SERVICE INTERVALS The following standard table depends on environmental conditions and usage. Parts replacing time does not mean the life span for individual parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. The following list means standard hours, so the checking hours depends on the conditions.
  • Page 20 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 21: When Replacing Eeprom (Memory) Ic

    WHEN REPLACING EEPROM (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. To reset clock, either unplug AC cord and allow at least 30 minutes before Power On or alternatively, discharge backup capacitor.

  • Page 22: Servicing Fixtures And Tools

    SERVICING FIXTURES AND TOOLS (For 2 head 1 speed model, (For 2 head 2 speed model) JG002B Adapter JG005 Post Adjustment 4 head model) VHS Alignment Tape JG002E Dial Torque Gauge Screwdriver VHS Alignment Tape JG001C (TTV-P2) (10~90gf•cm) Part No. SV-TG0-030-000 (TTV-P2) JG001E JG001D...

  • Page 23: Preparation For Servicing

    PREPARATION FOR SERVICING How to use the Servicing Fixture Unplug the connector CP353, then remove the TV/VCR Block from the set. Be sure to place the parts on a paper so that they have no short-circuit each other. Unplug the connector CP810, CP820 and CP850, then remove the Main PWB from the VCR Block. Connect as shown in the below figure using the Service Fixture.

  • Page 24: 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 25: 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 adjusting section for the Tension Arm the Cassette Tape to keep it steady when you want to position so that the Tension Arm top is within the make the tape run without the Cassette Holder.

  • Page 26: Confirmation And Adjustment Of Tape Running Mechanism

    MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF VSR TORQUE NOTE Install the Torque Gauge (JG002F) and Adapter (JG002B) If the torque is out of the range, replace the following on the S Reel. Set to the Picture Search (Rewind) mode. parts. (Refer to Fig.1-4-B) Check item Replacement Part Then, confirm that it indicates 120~180gf•cm.
  • Page 27 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 28: Mechanism Adjustment Parts Location Guide

    MECHANICAL ADJUSTMENTS 3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE 1. Tension Connect P4 Post 2. Tension Arm T Brake Spring 3. Guide Roller T Reel 4. Audio/Control Head S Reel 5. X value adjustment driver hole Adjusting section for the Tension Arm position D2-4...

  • Page 29: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE 2. BASIC ADJUSTMENTS Read and perform these adjustments when repairing the (VCR SECTION) circuits or replacing electrical parts or PWB assemblies. 2-1: PG SHIFTER CAUTION Playback the alignment tape. (JG001C) When you exchange IC and Transistor for a heat sink, Press and hold the Tracking-Auto button on the remote apply the silicon grease (G-746) on the contact section of control more than 2 seconds to set tracking to center.
  • Page 30 ELECTRICAL ADJUSTMENTS (REC TUNER) 2-7: VERTICAL POSITION Place the set with Aging Test for more than 15 minutes. NOTE: Adjust after performing adjustments in section 2-6. Connect the oscillator (39.5MHz) to TP1102. Receive the center cross signal from the Pattern Connect the digital voltmeter between the pin 7 of Generator.
  • Page 31 ELECTRICAL ADJUSTMENTS 2-10: OSD HORIZONTAL 2-13: BRIGHT CENT Using the remote control, set the brightness and Receive the PAL black pattern*. (RF Input) contrast to normal position. Using the remote control, set the brightness and Activate the adjustment mode display of Fig. 1-1 and contrast to normal position.
  • Page 32 ELECTRICAL ADJUSTMENTS 2-16: Confirmation of Fixed Value (Step No.) Please check if the fixed values of the each adjustment items are set correctly referring below. FUNCTION RF (50Hz) RF (60Hz) AGC GAIN R CUTOFF G CUTOFF B DRIVE V POSI BRIGHT MAX BRIGHT MIN CONTRAST MAX...

  • Page 33: Electrical Adjustments

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

  • Page 34: Electrical Adjustment Parts Location Guide

    ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CD803 CRT PWB CP803B CP802 TP804 J801 CP850 MAIN PWB CP810 VR502 CP820 FB401 W018 T501 CD601 VR401 CP401 CD3001 CD602 CP502 J4201 CP603 TP4201 TU1101 L503 TP1102 CD502 CD501 AC IN IF PWB CP4005...

  • Page 35: Troubleshooting Guide

    TROUBLESHOOTING GUIDE (TV SECTION) (In case that there isn't a normal tension for time to do ( 1 ) that a power supply doesn't standby CP3001 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 36 TROUBLESHOOTING GUIDE (In case that there is a normal tension for time to do ( 2 ) that a power supply doesn't standby CD9001 every terminal) enter Is the voltage 5V for Investigate D1006 . IC1006 36th pin or not? Is the voltage of IC1006 Investigate D1001.
  • Page 37 TROUBLESHOOTING GUIDE A voice isn't though an image appears Whether does a signal Whether does a signal Investigate IC4001 11th pin. come to IC352 6th pin come to IC601 55th pin or not? or not? Investigate IC601 peripheral circui. Is the voltage of IC352 Investigate D505 and D509.
  • Page 38 TROUBLESHOOTING GUIDE A color doesn't adhere to it Whether is wave form of Investigate X601. IC601 40th pin normal or not? Whether is wave form of IC601 30th pin,31th pin and Investigate IC601. 32th pin normal or not? Investigate CRT PWB and a peripheral circuit.
  • Page 39 TROUBLESHOOTING GUIDE An image doesn't appear Is the voltage DC 9V for Investigate P.CON+9V Line. IC603 17th pin or not? Whether is a luminance signal early in IC603 Investigate IC603. 1st pin or not? Whether is a luminance Investigate IC4001. signal early in IC4001 52th pin or not? R, G, B signal out from...
  • Page 40 TROUBLESHOOTING GUIDE An only horizontal line appears Is the voltage DC 25V for Investigate C429 and D411 . IC401 2nd pin or not? Investigate CRT, IC401 and a Is the voltage DC 25V for peripheral circuit. IC401 10th pin or not? Whether does a video Investigate IC603.
  • Page 41 TROUBLESHOOTING GUIDE (VCR SECTION) PLAY SHUTS OFF Insert a cassette and push 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 42 TROUBLESHOOTING GUIDE NO PLAYBACK PICTURE Is there voltage at pins Does E-E appear on the Check Power circuit. 12, 36 and 61of IC4001 5V? Monitor TV? Is there PB Y/C signal Check IC4001 and the connection of at TP4002 ? the CYLINDER.
  • Page 43 TROUBLESHOOTING GUIDE NO COLOR DURING PLAYBACK Does FM ENVELOPE Check IC4001. appear at TP4002? Does CHROMA signal Check W781, Q4006 and appear at pin 52 of IC4001? peripheral circuit. Does CHROMA Check C4075, R4050 and the signal appear at pins peripheral circuit.
  • Page 44 TROUBLESHOOTING GUIDE PLAYBACK PICTURE IS NOISY (EVEN AFTER CLEANING HEADS) Is FM signal at TP4002 Replace CYLINDER UNIT. more than 200mVp-p? Is VIDEO waveform at pin Check pin 52 of IC4001 and 52 of IC4001 1Vp-p and peripheral circuit. are there any noise? Check pins 79 and 78 and Is there FM signal at pin 79 peripheral circuit.
  • Page 45 TROUBLESHOOTING GUIDE NO COLOR DURING SELF RECORDING AND PLAYBACK Does VCR signal Check J4201, J2204 and pin6 appear at pin 31 or 30 or of IC6001. 28 of IC4001? Refer to section "NO COLOR DURING PLAYBACK". E-11...
  • Page 46 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 of stains. Does Audio appear at Check that the cinnector from pin 11 of IC4001? AUDIO HEAD is fully inserted to CP4005.
  • Page 47 TROUBLESHOOTING GUIDE CAPSTAN DD MOTOR NOT ROTATING In playback, is the voltage at pin 2 and Check POWER circuit. pin 8 of CP1001 12V? Is the voltage at pin 3 of CP1001 5V? In playback, check the voltage at pin 5 of CP1001 is 2V or at Replace IC1006.
  • Page 48 TROUBLESHOOTING GUIDE AUDIO CAN NOT BE RECORDED Is there BIAS at pin 4 Is the voltage at pin 2 Check POWER BLOCK. of L4005 5V? of IC4001? L4005 is broken or shorted. Check peripheral circuit. Is there AUDIO signal at Check the circuit of 21 PIN and pins 7 or 8 or 9 of IC4001? pin 24 of IC6001.
  • Page 49 TROUBLESHOOTING GUIDE CASSETTE IN AND DOWN BUT UNIT HAS NO FUNCTIONS Does mode indicator Check LOADING MOTOR and the appear in Display? peripheral parts. Does VCR operate with Check IC1006. the remote control? Check SW and the peripheral circuit on SYSCON PWB. E-15...
  • Page 50 TROUBLESHOOTING GUIDE RECORDING MECHANISM WORKS, BUT NO VIDEO RECORDED FROM INPUT JACK OR TUNER Does video signal Check J4201, J2204 and pin 6 of appear at pin 28 or IC6001. 30 or 31 of IC4001? Does FM signal appear at pin 86 or 89 Check the peripheral circuit IC4001.
  • Page 51 TROUBLESHOOTING GUIDE NO E-E (NO VIDEO AND AUDIO FROM TUNER) Is the voltage at pin Check Power PWB. 7 of TU601 5V? Is the voltage at pin 9 of TU601 30V? Is there waveform at pins Check IC601. 4 and 5 of TU601? Check TU601.
  • Page 52 TROUBLESHOOTING GUIDE CYLINDER NOT ROTATING DURING PLAYBACK AND RECORDING Is the voltage at pin 2 Check P. CON 12V line and and pin 8 of CP1001 POWER BLOCK. about DC12V? In playback, is the voltage Check IC1006. at pin 12 of CP1001 about DC1.2V? Check CYLINDER MOTOR.
  • Page 53 TROUBLESHOOTING GUIDE AUDIO SHAKES Replace AUDIO HEAD. Is AUDIO HEAD scratched? Does pin 9 and pin 42 of IC1006 output a 3.0Vp-p Replace CAPSTAN DD MOTOR. square wave? In playback, is the voltage Check peripheral components at pin 9 of CP1001 2.8V? of IC1006.
  • Page 54 TROUBLESHOOTING GUIDE CASSETTE TAPE IS NOT ACCEPTED Does WORM GEAR of Check WORM GEAR of CASSETTE LOADING CASSETTE LOADING BLOCK. BLOCK activate? When cassette is not Check LED and PHOTO SENSOR inserted ,is the voltage at on DECK. pin 25 of IC1006 5V? When a cassette is inserted, Replace LOADING MOTOR.
  • Page 55 TROUBLESHOOTING GUIDE WHEN INSERTING CASSETTE, IT EJECTS IMMEDIATELY Does this same problem Defective CASSETTE or appear when using CASSETTE LOADING BLOCK. another cassette tape? Does SW1001 and REC Correctly SW1001 and REC LEVEL correctly set? LEVER set? After incerting cassette, is Check SW1001.
  • Page 56 TROUBLESHOOTING GUIDE FF/REW DO NOT WORK AT FF/REW, does voltage at Check pin 29 and pin 30 of pin 71 of IC1006 Change? IC1006 lines. Check DECK MECHANISM. E-22...
  • Page 57 TROUBLESHOOTING GUIDE TAPE LOADING IS OK, BUT UNLOADS IMMEDIATELY Is the voltage at pin 2 and Check Power circuit. Does CYLINDER rotate ? pin 8 of CP1001 12V? Replace CYLINDER UNIT. Does TP4001 feed Does PG PULSE HEAD SWITCHING appear at pin 104 of PULSE signal 30Hz? IC1006? Replace IC1006.
  • Page 58 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 59 TROUBLESHOOTING GUIDE PLAYBACK PICTURE JITTERS HORIZONTALLY Is FG output level at pin Replace CYLINDER UNIT. 11 of CP1001 5Vp-p? Is the voltage at pin 12 of Replace IC1006. CP1001 1.2V? Replace CYLINDER UNIT. AUTO TRACKING DOES NOT OPERATE By manual tracking, does Check YCA, H/AMP circuit and the DC level at pin 13 of CYLINDER UNIT.
  • Page 60 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 69 of R1006.
  • Page 61 TROUBLESHOOTING GUIDE PLAYBACK PICTURE SHAKES Is FG Pulse output Replace CYLINDER MOTOR. level at pin 11 of CP1001 about 5Vp-p? Does pin 104 of IC1006 output Replace IC1006. a 5Vp-p square wave? In playback, is the voltage at pin 12 of CP1005 about 1.2V? Replace CYLINDER MOTOR.

  • Page 62: Ic Descriptions

    IC DESCRIPTIONS OEC0113B (IC1006) No. PORT PIN NAME DESCRIPTION SVSS SVSS Ground. CTLREF CTLREF OUT Output terminal for AMP REFERENCE. CTL(+) CTL(+) Input and output terminal of Control Head. CTL(-) CTL(-) Input terminal of Control Head. CTLBIAS CTLBIAS Input terminal for Control Bias. CTLFB CTLFB Input terminal for Control Feedback.
  • Page 63 IC DESCRIPTIONS OEC0113B No. PORT PIN NAME DESCRIPTION P17/TMOW TUNER CTL OUT Output terminal for TUNER control at 2 tuner. P67/RP7/TMB T-REC_LED OUT Output terminal control for T-REC-LED voltage drive. P66/RP6/ADTRG REC/OTR_LED OUT Output terminal control for REC-LED voltage drive. P65/RP5 ON_TIMER_LED OUT Output terminal control for ON TIMER-LED voltage drive.
  • Page 64 IC DESCRIPTIONS OEC0113B No. PORT PIN NAME DESCRIPTION P30/SV1 OUT Output terminal external SW . P70/PPG0 TV_MUTE OUT Mute signal of TV mute. P71/PPG1 VCR MUTE OUT Mute signal of VCR mute. P72/PPG2 V.REC.START-H OUT Output terminal for REC signal when record. P73/PPG3 TUNER MUTE OUT Mute signal of audio mute for tuner.

  • Page 65: Servo Timing Chart

    SERVO TIMING CHART IC1006 (OEC0113B) DPG 103 PIN DFG 104 PIN 24 Cycle CH 1 H. SW. P 105 PIN CH 2 V-SYNC (E-E) 15 PIN REC CTL (REC) 7 PIN V-SYNC (TRICK PB) 109 PIN • WAVEFORM CHANGES DEPENDED ON THE TAPE SPEED F2-1...

  • Page 66: System Switch Mode

    SYSTEM SWITCH MODE Please see the list below for the operational timing and the mode sensor output of the main parts on each mechanism modes. MECHANISM MODE EJECT STBY UNLOAD STOP3 F.SLOW STOP2 FF/REW Mode Dealing Directions Revolutional Angle of 206.3 226.4 272.2...

  • Page 67: Semiconductor Base Connections

    SEMICONDUCTOR BASE CONNECTIONS DIODE CATHODE CATHOD ANODE ANOD 1N4937 11E1-EIC RU2AM-EIC SLR-342VCT32 LNA2702L010R GBL06L-6177 1SS133T-77 11EQS04N-TA1B2 SB140-EIC AK04V0 11ES1-EIC SB290S MTZJ10B T-77 MTZJ15B T-77 MTZJ33B T-77 MTZJ5.6B T-77 SDA5650/X LA7567B ET-TVT008B MM1231XF TEA1507P/N1 BR24C08F STV2246C HA118217F OEC0113B NJM2534V(TE2) R3111N311A/C-TR KIA7805API AN7523 LA7956 KIA78R05PI...

  • Page 68: Tv Block Diagram

    TV BLOCK DIAGRAM AUDIO SIGNAL (PB) TUNER VIDEO SIGNAL AUDIO SIGNAL (REC) TUNER AUDIO SIGNAL B. SIGNAL PLAYBACK COLOR SIGNAL G. SINGNAL PLAYBACK LUMINANCE SIGNAL R. SIGNAL SW_VIDEO RECORD LUMINANCE SIGNAL DEFLECTION SIGNAL T'TEXT RECORD COLOR SIGNAL TEXT_SYNC 21_B Q602 21_G BUFFER IF/21PIN/...

  • Page 69: Y/C/Audio/Head Amp

    Y/C/AUDIO/HEAD AMP BLOCK DIAGRAM PDC/VPD DECODER IC4002 SDA5650/X CVBS Q4006 BUFFER Y/C_VIDEO X4001 4.433619MHz Y/C_AUDIO Y/C/AUDIO/HEAD AMP IC4001 HA118217F CP4001 6dB AMP 6dB AMP SP-CH2 (L) 2MLPF CTL TRAP CYL. SP COM fh HPF CLEAR C SQUELCH SP-CH1 (R) SYNC DELAY CLPF N-->P...
  • Page 70 MICON/POWER BLOCK DIAGRAM SYSCON/TIMER/SERVO IC1006 OEC0113B SW1001 SYSTEM RESET AV_2 1 OUT TAB SW RESET IC1002 R3111N311A/C-TR AV_1 AT+5.6V MS SEN-A EXT_IN_L EXT_IN_L MS_SEN A Q1009 TUNER_ON/OFF DA RGB SW IF/21PIN/ IN/OUT MS SEN-B MS_SEN B Q1003 TUNER_MUTE TU_AUDIO_MUTE_H VCR_MUTE VCR_A_MUTE CTL(+) CTL+...

  • Page 71: Micon/Power

    IF/21PIN/IN/OUT BLOCK DIAGRAM IC6001 LA7567B TU1101 MICON/ POWER CP6001 REC_TU_A TU AUDIO Y/C/AUDIO/ Q6005 REC_TU_V HEAD AMP TU VIDEO PRE AMP FRONT AUDIO J2203 FRONT_A_IN_L L6006 CF6002 Y/C/AUDIO/ FRONT VIDEO Q6001 HEAD AMP J2204 VIDEO BUFFER FRONT_V_IN Q4210 TUNER ON/OFF Q4207 MICON/ EXT_IN_L...

  • Page 72: T'text

    T' TEXT BLOCK DIAGRAM T'TEXT IC1201 ET-TVT008B X1201 TEXT_RESET RSTB 13875KHz OSC IN OSC OUT MICON/ POWER OSD_R OSD_G Q1262 OSD_B OSD_Y BLANK BUFFER BLUE 29 GREEN TRIPLE ANALOG MPXER IC 30 RED IC1202 MM1231XF 11 VINP 20 VIDEO IN SYNC TEXT_R TEXT_G...

  • Page 73: Printed Wiring Boards Syscon

    PRINTED WIRING BOARDS SYSCON IC602...
  • Page 74 PRINTED WIRING BOARDS SYSCON S104X S104Y C3011 Q3001 IC3001 W930 W300 CP3001 CD602 IC3003 R3002 R1289 TP1001 W014 C1090 W013 R2203 C3002 C1016 D3004 W293 S102X R2202 W094 L604 W010 W291 W090 W197 W087 W006 W194 S809Y W008 W083 R613 R647 W007 S102Y...
  • Page 75 PRINTED WIRING BOARDS SYSCON S104X S104Y C3011 Q3001 IC3001 W930 W300 CP3001 CD602 IC3003 R3002 R1289 TP1001 W014 C1090 W013 R2203 C3002 C1016 D3004 W293 S102X R2202 W094 L604 W010 W291 W090 W197 W194 W087 W006 S809Y W083 W008 R613 R647 W007 S102Y...

  • Page 76: Y/C/Audio/Head Amp Schematic Diagram

    Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM BUFFER (SYSCON PWB) Q4017 KTC3875S_Y_RTK L4002 100uH 0305 FROM POWER BUFFER Y/C_VIDEO Q4006 FRONT_V_IN R4065 TP4002 W871 2SA1037AK FRONT_A_IN_L 1K 1/4W V.ENV REC_TU_A REC_TU_V Q4007 KTC3875S_Y_RTK R4055 Y/C_AUDIO L4008 R4053 R4054 FROM REGULATOR C4035 560K 330K P.CON+9V 0.01 B P.CON+5V_C...

  • Page 77: Micon Schematic Diagram

    D1006 MICON SCHEMATIC DIAGRAM D1010 SB140-EIC SB140-EIC (SYSCON PWB) FROM/TO REGULATOR R1096 C1072 C1030 AT+5.6V VCR_POWER_H 68P CH 0.1 F AT+12V P.CON+5V_C MOTOR_GND C1060 FROM/TO POWER 0.1 B AT+5.6V_A S104Y S104X 0.5 2.2 5.2 3.3 2.6 2.5 5.2 1.5 1.6 5.2 2.6 5.2 0 3.5 3.5 3.6 2.8 5.3...

  • Page 78: Power Schematic Diagram

    POWER SCHEMATIC DIAGRAM (SYSCON PWB) TO Y/C/AUDIO/HEAD AMP FRONT_V_IN FROM REGULTOR FRONT_A_IN_L REC_TU_V P.CON+5V_A REC_TU_A P.CON+5V_C AT+30V FROM/TO MICON MO_SYNC SW_VIDEO REC_AFT REC_AGC_CTL AT+30V +30V 29.8 P.CON+5V_C L1103 KEY_A P.CON+5V_A KEY_B 100uH 0607 MO_SYNC R1112 REMOCON_IN R1105 R1173 R1111 BUFFER REC_LED R1197 Q1102...

  • Page 79: 21Pin/In/Out Schematic Diagram

    21PIN IN/OUT SCHEMATIC DIAGRAM (SYSCON PWB) FROM/TO MICON AT+5.6V_A TUNER_ON/OFF EXT_IN_L C4237 TU_AUDIO_MUTE_H 0.001 CH REM+5V C2206 C4209 TP4201 6.3V VIDEO OUT FROM REGULATOR R4224 75 1/4W P.CON+9V MUTE SW Q4211 KTC3875S_Y_RTK 21PIN JACK W833 J4201 0350_9982_05 FROM POWER R4217 REM+5V R4216 B4202...

  • Page 80: Chroma/If Schematic Diagram

    VIDEO SW IC CHROMA/IF SCHEMATIC DIAGRAM IC603 LA7956 (VIDEO) FROM/TO MICON FROM/TO 21PIN IN/OUT (SYSCON PWB) H_CTL REAR_V_IN video switch VCR_POWER_H L613 driver control P.CON+8V_A REAR_A_IN_L 100uH 0305 P.CON+5V_A TU_AUDIO PROTECT JACK_VIDEO DEGAUSS_H 21_B POWER_FAIL[DC] AV_2 21_G TUNER_CTL AGC_M 21_R AV_1 21_Y C635...

  • Page 81: Sound Amp Schematic Diagram

    SOUND AMP SCHEMATIC DIAGRAM (SYSCON PWB) SOUND AMP IC IC352 AN7523 HS352_1 FROM CHROMA/IF S812X S812Y 763WSA0021 EMERGENCY R307_1 SOUND+B C303 1.8 3W SOUND_GND 1000 C306 R301 2.7K 0.47 SW_AUDIO TO SPEAKER CD353 CU147401 SPEAKER CP353 A2502WR2-4P SP301 SG04H02BRA R CH SP OUT R+ 8 OHM R306...

  • Page 82: Secam Chroma/Hi-Fi

    SECAM CHROMA/HI-FI SCHEMATIC DIAGRAM (SYSCON PWB) S807Y S806Y VV SW Q2806_1 KRC102SRTK PWB010 VMA239 CAUTION: DIGITAL TRANSISTOR NOTE:THE DC VOLTAGE EACH PART WAS NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME MEASURED WITH THE DIGITAL TESTER OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE DURING PLAYBACK.

  • Page 83: Regulator Schematic Diagram

    REGULATOR SCHEMATIC DIAGRAM (SYSCON PWB) 9V REG IC IC3001 KIA78R09API D3003 11E1-EIC TO Y/C/AUDIO/HEAD AMP 13.0 P.CON+9V P.CON+9V P.CON+5V_C FROM/TO MICON R3002 FROM TV POWER VCR_POWER_H CD3001 CP3001 (CP810) 2.2K 1/4W AT+12V B2013H02-9P CU293101 AT+5.6V 5V REG. IC C3008 IC3003 P.CON+5V_C AT+12V KIA7805API...

  • Page 84: T'text Schematic Diagram

    T’TEXT SCHEMATIC DIAGRAM (SYSCON PWB) L1203 10uH 0305 Q1101 R1115 KTD863_Y BUFFER Q1104 KTC3875S_Y_RTK R1108 FROM REGULATOR P.CON+9V P.CON+5V_C D1203 L1205 D1202 10uH SB140-EIC W867 AT+5.6V 11E1-EIC W876 C1257 SYNC BUFFER 6.3V Q1253 KTC3875S_Y_RTK VDD3V1A R1206 C1219 VDD3V1B R1214 0.022 B W854 51 FLAG2 42 OSC OUT...

  • Page 85: Printed Wiring Boards (Main/Crt/Power Sw./If

    PRINTED WIRING BOARDS MAIN/CRT C554 R520 R516 R553 R510 R523 R532 C541 W803 R531 C6023 C6001 C413 C6007 R6002 R6016 W007 C6010 R6020 W008 R6014 W806 C6013 C802 R821 C806 W808 R812 C807 I-13...
  • Page 86 PRINTED WIRING BOARDS MAIN/CRT/POWER SW. CP810 D528 W023 VR502 CP403 D507 IC506 W814 R507 W022 D515 D508 W005 W015 IC501 D502 W001 R511 CP820 W013 S806X R6001_1 D533 C531 D524 W010 R453 W821 C542 W009 C431 W008 C518 S806Y W003 R505 CF6008 D514...
  • Page 87 PRINTED WIRING BOARDS MAIN/CRT/POWER SW. CP810 D528 W023 C554 VR502 CP403 D507 IC506 W814 R507 W022 D515 R520 R516 R553 D508 W005 R510 W015 IC501 D502 R523 W001 R532 R511 CP820 W013 S806X C541 R6001_1 W803 D533 C531 R531 D524 W010 R453 W821...

  • Page 88: Tv Power Schematic Diagram

    TV POWER SCHEMATIC DIAGRAM (MAIN PWB) DEGAUSS_H RELAY DRIVE R501_1 Q504 D516 KTC3198 2.2 7W C FROM/TO DEFLECTION 1SS133 SOUND+B DEGAUSS_H VCR.POWER_H W861 RY501 SOUND_GND T501_2 ALKS321 81350784 EMERGENCY DEGAUSS COIL POWER_FAIL 308.3 15.5 L503 D505 DC IN SOUND+B AT+13V 8H200015 CP502 SB290S...

  • Page 89: Deflection Schematic Diagram

    DEFLECTION SCHEMATIC DIAGRAM (MAIN PWB) TO DY V-DRIVE IC IC401 TDA8174A CP401 A1561WV2-A5P FB401_1 3221012F R404_1 11.1 24.5 24.2 330K +-1% VIDEO FROM/TO CHROMA/IF CP403 (CD602) R409 003P-2100 D403 680 1/2W 11E1-EIC R411 L402 1/2W V.LINEARTY ELH5L4112N VR401 R420_1 R406_1 2.7K +-1% 8.2K +-1% FROM/TO CHROMA/IF...

  • Page 90: Crt Schematic Diagram

    CRT SCHEMATIC DIAGRAM (CRT PWB) CRT PWB TP804 R828 2.7K 1/4W RED AMP Q801 123.5 W824 KTC4217 W825 R810 4.7K TP805 C803 FROM CHROMA/IF CP850 (CP851) A2001WV2-5P R829 104.1 132.9 2.7K 1/4W CUT_OFF 132.5 W828 G.OUT GREEN AMP Q802 R.OUT 123.9 KTC4217 132.8...

  • Page 91: If Schematic Diagram

    IF SCHEMATIC DIAGRAM (IF PWB) C6004 CF6005 TPS6.0MB R6019_1 L6007 R6020 15uH 330 1/4W C6005 COIL,VIDEO IFT 0.01 B L6006 360K042 C6028 100P CH VIDEO C6006 W806 W819 0.01 B L6001 C6007 L6003 BUFFER Q6001 22uH 68P CH 2.2uH 2SA608KF-NP C6019 0.01 B C6001...

  • Page 92: Interconnection Diagram

    INTERCONNECTION DIAGRAM IF PWB PWB350 VE6778 HALL MAIN ROTOR SENSOR COIL MAGNET FG SENSOR CAPSTAN DD UNIT ASS’Y M2001 HALL HALL SWITCH LOGIC HEADPHONE JACK J2201 CP1001 LOADING MOTOR M101 CAP_FG CAP_VCO CAP.M/F/R I_LIMIT MOTOR_GND AC230-240V_50Hz CP820 CP601 CD601 CD501_2 CYL/LAD_VCO 06439801 EMERGENCY...

  • Page 93: Waveforms

    WAVEFORMS MICON TV POWER 1 5.0V 0.1ms/div 50.0V 20µs/div 11 PB 16 REC 2.0V 10ms/div 0.5V 10µs/div 26 PB 21 REC 2.0V 5ms/div DEFLECTION 2.0V 1ms/div 17 REC 2 2.0V 20µs/div 7 50.0V 20µs/div 12 PB 100mV 0.5ms/div 50mV 5ms/div 22 REC 27 PB 1.0V 10µs/div...

  • Page 94: Sound Amp

    WAVEFORMS 48 REC 32 REC 0.5V 0.5ms/div 100mV 0.5ms/div SOUND AMP 50 REC 45 REC 0.5V 0.5ms/div 2V 20µs/div 21PIN/IN/OUT 46 REC 0.5V 10µs/div 52 REC 0.5V 0.5ms/div 47 REC 0.5V 10µs/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 95: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW PWB110 (CRT PWB ASS'Y) PWB340 (POWER SW PWB ASS'Y) PWB070 (MAIN PWB ASS'Y) K1-1...

  • Page 97: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION Q'TY S5-C50-4G7-200 CABI,FRONT ASSY ---- SHIELD,CASE ASS'Y ---- SHIELD,CASE ---- PLATE,SHIELD BOTTOM ---- PLATE,SHIELD BOTTOM(R) ---- PLATE,SHIELD BOTTOM(L) ---- PLATE,EARTH-SYSCON S5-3WS-A01-440 PLATE,BOTTOM-EARTH ---- FELT SHEET ---- HLDR,DECK S7-1WP-A02-660 PLATE,JACK S5-OP7-000-370 HOLDER,LED S5-OP7-000-380 HOLDER,END SENSOR S6-1WP-A02-230 HLDR,FBT S5-2WS-A02-570 PLATE,POWER SW...

  • Page 98: Chassis Exploded View (Top View)

    CHASSIS EXPLODED VIEW (TOP VIEW) CD1501 M2003 UN4001 H5002 H5001 CD1502 M101 NOTE: Applying positions AA, AB, AC and AD for the CLASS PART NO. MARK grease are displayed for this section. GREASE G-555G Check if the correct grease is applied for each MG-33 position.

  • Page 99: Chassis Exploded View (Bottom View)

    CHASSIS EXPLODED VIEW (BOTTOM VIEW) CD1501 M2001 CD1502 NOTE: Applying positions AA, AB, AC and AD for the CLASS PART NO. MARK grease are displayed for this section. GREASE G-555G Check if the correct grease is applied for each MG-33 position.

  • Page 100: Chassis Replacement Parts List

    CHASSIS REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION Q'TY ----- DECK ASSY A5C504G420A S5-OA4-002-340 PINCH ROLLER BLOCK S5-OA5-000-260 AHC ASS'Y S5-OP2-002-900 BELT,CAPSTAN (S) S5-OP6-005-810 WORM S5-OP5-000-830 BASE,AC HEAD S5-OP8-003-240 SPR,AC HEAD ----- MAIN CHASSIS ASS'Y S5-OA2-000-890 CLUTCH ASS'Y S5-OA2-000-900 ARM IDLER ASS'Y S5-OA3-000-650 LOADING ARM S UNIT...

  • Page 101: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO PART NO. DESCRIPTION REF. NO PART NO. DESCRIPTION C2206 87-016-088-040 CAP,E 220-6.3V SYSCON PWB ASS'Y C3002 87-010-235-080 CAP,E 470-16V C3006 S0-2LU-047-1M0 CAP,E 470-6.3V *** RESISTORS *** C3007 S0-2LU-047-1M0 CAP,E 470-6.3V C3008 87-010-235-080 CAP,E 470-16V R307 S3-X28-B1R-8J0 RES,MO 1.8-3W...

  • Page 102: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO PART NO. DESCRIPTION REF. NO PART NO. DESCRIPTION D4203 87-020-465-010 DIODE,1SS133T Q4211 SC-AA3-875-SY0 TR,KTC3875S_Y_RT D4210 87-020-465-010 DIODE,1SS133T *** COILS *** *** ICS *** B2201 S2-4AC-360-1C0 CORE,BEADS BLM21A601SPT IC352 S0-FSP-752-300 IC,AN7523 B4201 S2-4AC-360-1C0 CORE,BEADS BLM21A601SPT IC601 S0-WDE-246-C00 IC,STV2246 B4202...
  • Page 103 ELECTRICAL REPLACEMENT PARTS LIST REF. NO PART NO. DESCRIPTION REF. NO PART NO. DESCRIPTION CP603 S6-9X1-703-790 CONN,07JQ-ST ! C505 S2-122-B22-4M0 CAP,0.22-250V E ! C506 CD4005 S2-2S0-614-010 CORD,1.25-6-138-C S2-122-B10-4M0 CAP,MP 0.1-250V CP4001 S6-972-406-000 CONN,PWB SIDE TOC-C04X-B1 C507 S5-2D0-H22-1M0 CAP,E 220-400V 400USR220MS CP4004 S6-971-203-200 CONN,TMC-TD2X-E1...
  • Page 104 ELECTRICAL REPLACEMENT PARTS LIST REF. NO PART NO. DESCRIPTION REF. NO PART NO. DESCRIPTION ! T501 S4-813-507-840 TRANS,SW 81350784 POWER SW PWB ASS'Y *** VARIABLE RESISTORS *** *** SWITCHES *** VR401 S1-163-Q2B-TC0 SFR,EVNCYAA VR402 S1-163-H3B-TC0 SFR,EVNCYAA03BE SW501 S5-302-050-170 SW,SDKVA30 VR502 S1-262-Q2B-T60 SFR,RH063LCS2R *** AC CORD ***...
  • Page 105 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 0251431...

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