Panasonic Quasar Omnivision PV-V4021-K Service Manual
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Panasonic Quasar Omnivision PV-V4021-K Service Manual

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ORDER NO. MKE0101000C1
B3
Video Cassette Recorder
PVQ-V201 / PV-V4021 / PV-V4021-K / VHQ-401 / VHQ-41M / PV-
V4511 / PV-V4521 / PV-V4521A / PV-V4521-K / VHQ-451 / PV-
V4611
SPECIFICATIONS

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Summary of Contents for Panasonic Quasar Omnivision PV-V4021-K

  • Page 1 ORDER NO. MKE0101000C1 Video Cassette Recorder PVQ-V201 / PV-V4021 / PV-V4021-K / VHQ-401 / VHQ-41M / PV- V4511 / PV-V4521 / PV-V4521A / PV-V4521-K / VHQ-451 / PV- V4611 SPECIFICATIONS...
  • Page 2 1. MODEL NUMBER INDICATION Use Marks shown in the chart below to distinguish the different models included in this Service Manual. The Model number is indicated on the Model No. Label which is located on the rear side of the Cabinet. Differences between PV-V4521 and PV-V4521A are as below.

  • Page 3: Safety Precautions

    - Main C.B.A. (Ref. No. E10) When ordering these, be sure to confirm the model number printed on the Model No. Label and order the proper parts according to the replacement parts list. 2. SAFETY PRECAUTIONS GENERAL GUIDELINES 1. IMPORTANT SAFETY NOTICE There are special components used in this equipment which are important for safety.

  • Page 4: Prevention Of Electro-Static Discharge

    1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check. 2. Connect a 1.5 k , 10 W resistor, in parallel with a 0.15 F capacitor, between each exposed metallic part on the set and a good earth ground, as shown in figure 1.

  • Page 5: Service Notes (Please Read)

    remove electrostatic charge for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3.
  • Page 6 displayed in F.I.P. The Simplified Fault finding data is stored in the Memory IC (IC6005). This data is cleared after it is displayed, and then the POWER button is pressed back on. 1. With power turned off, press VCR/TV button on VCR (for over 3 seconds if VCR is not in shut off condition).
  • Page 7 Fig. 1-5 Fig. 1-6 3. While pressing VCR/TV button on VCR with power turned off, press any operation button on either VCR, or remote to detect that a key has...
  • Page 8 been pressed. The 1st digit changes to "0" only when key is detected. Fig. 1-7 4. When 1 to 4 listed in Lock code occurs, Lock data will be stored in the EEPROM IC (Current data, Last Lock data, and the Last Lock data before last).
  • Page 9 2. Fault indication will be displayed in F.I.P. as shown. Fig. 2-2 FIg. 2-3...
  • Page 10 3. When Lock indication occurs, Lock data will be stored in the EEPROM IC (Current data, Last Lock data, and the Last Lock data before last). Lock data displayed in F.I.P. can be changed by pressing CH DOWN button. Fig. 2-4...
  • Page 11 Note: 1. Lock data will be kept after the AC Cord is unplugged. 2. When Lock indication occurs for the first time, the VCR does not go into VCR shut-off condition. If it occurs again within a minute, the VCR goes into VCR shut-off condition.
  • Page 12 After replacing EEPROM IC (IC6005) or Main C.B.A., be sure to perform the "PG SHIFTER ADJUSTMENT" in ELECTRICAL ADJUSTMENT procedures. 5.1.4. SERVICE POSITION 5.1.4.1. Service Position CAUTION: HOT CIRCUIT (Primary circuit) exists on the Main C.B.A. Use extreme care to prevent accidental shock when servicing. 5.1.4.1.1.
  • Page 13 5.1.4.1.3. Service Position (2-2) (Model: M, N) Fig. 4-2-2...
  • Page 14 Note: 1. It is possible that the S-Tab SW. may not work correctly in Service Position (2-1), (2-2). (Recording can not be done). In this case, short the S-Tab SW. Pins on the foil side of the Main C.B.A. to turn this SW. Fig.
  • Page 15 stability. 3. When disassembling/assembling, refer to "CABINET SECTION" in DISASSEMBLY/ASSEMBLY PROCEDURES. 5.1.5. HOT CIRCUIT Primary circuit exists on the Main C.B.A. This circuit is identified as "HOT" on the C.B.A. and in the Service Manual. Use extreme care to prevent accidental shock when servicing. 5.1.6.
  • Page 16 To release from this mode, press POWER button off or disconnect AC Plug. 5.1.7. TRACKING CENTER MODE (TRACKING FIX AT CENTER) Insert the Cassette tape. Set the unit into Service Mode. Play back the Cassette tape. Press PLAY button in Play back mode. "TRACKING CENTER" will be displayed on the TV monitor. In this mode, the tracking is fixed at center.
  • Page 17 5.1.9. METHOD FOR LOADING/UNLOADING OF MECHANISM 5.1.9.1. (Manual Method) Turn the Loading Gear clockwise (for loading) or counterclockwise (for unloading) using needlenose pliers etc. Note: Do not use this method if Mechanism is jammed or locked. Fig. 7-1 5.1.9.2. (Electrical Method) Apply +10.0 V DC Power Supply to the Loading Motor terminals.
  • Page 18 When loading without a cassette, push Portion "a" on the Holder Unit of Cassette Up Ass’y so that the Lever clear the First Tab and Second Tab. Fig. 7-3 5.1.10. HOW TO REMOVE A JAMMED TAPE CAUTION: Wiper Arm Unit may be damaged or its spring may be out of place when the jammed tape is removed by force.
  • Page 19 Method -1: 1. Move the Pinch Roller Unit out by unhooking the Pin of Pinch Arm Unit so that the Pinch Roller is separated from the Capstan Rotor Unit shaft. Fig. 8-2 2. Remove the tape from the tape path. 3.
  • Page 20 Method -2: 1. Rotate Loading Motor counterclockwise with needlenose pliers, etc. so that the Pinch Roller is separated from the shaft of the Capstan Rotor Unit. 2. Perform Step 2 through Step 7 of Method -1. Method -3: 1. Perform Step 2 through Step 7 of Method -1. Note: After repairing mechanical trouble, make sure that all gear alignments are correct, especially the Wiper Arm Unit and Drive Rack Unit of...
  • Page 21 Fig. 9 4. Rewind the tape into the cassette by turning the Center Clutch Unit counterclockwise. 5. Eject the cassette by applying +10.0 V DC Power Supply again. 5.1.11. BLACK SCREWS ON THE CHASSIS Black Screws are used on the Mechanism Chassis to identify screws that require adjustment. 5.1.12.
  • Page 22 therefore require the special handling techniques described under the "ELECTROSTATICALLY SENSITIVE (ES) DEVICES" section of this service manual. 5.1.16. REPLACEMENT PROCEDURE FOR LEADLESS (CHIP) COMPONENTS The following procedures are recommended for the replacement of the leadless components used in this unit. 1.
  • Page 23 B. Press the part downward with tweezers and solder both electrodes as shown below. Fig. 10-3 Note: Do not glue the replacement leadless component to the circuit board. 5.1.17. MODEL NO. IDENTIFICATION MARK Use Marks shown in the chart below to distinguish the different models included in this Service Manual.

  • Page 24: Ic, Transistor And Chip Part Information

    Differences between PV-V4521 and PV-V4521A are as below. - Cylinder Unit (Ref. No. 11) - Grounding Plate Unit (Ref. No. 57) - Screw (Ref. No. 430) - Flexible Flat Cable (Ref. No. 718) - Main C.B.A. (Ref. No. E10) When ordering these, be sure to confirm the model number printed on the Model No. Label and order the proper parts according to the replacement parts list.

  • Page 25: Disassembly/Assembly Procedures

    6. DISASSEMBLY/ASSEMBLY PROCEDURES 6.1. CABINET SECTION 6.1.1. Disassembly Flowchart Perform all disassembly procedures in the order described in the "Disassembly Flowchart" shown below. When reassembling, use the reverse procedure. CAUTION: Disconnect AC plug before disassembly. Fig. D1...
  • Page 26 6.1.2. Disassembly Method How to read chart shown above: A:Order of Procedure steps. When reassembling, perform steps(s) in reverse order. These numbers are also used as the identification (location) No. of parts in Figures. B: Part to be removed or installed. C: Fig.
  • Page 27 Fig. D2 6.1.2.1. Notes in chart...
  • Page 28 1. Installation of Top Cover Install the Top Cover front portion at a downward angle so that the tab on the Front Panel Ass’y fits into the hole in the Top Cover. Then, lower the rear portion into place and tighten 2 Screws (S-1). 2.
  • Page 29 C.B.A. A. Make sure the Mode Select SW. on the Main C.B.A. is in EJECT position. If not, rotate the Mode Select SW. until the alignment projection is in the EJECT Position. B. Make sure the Mechanism and Cassette Up Ass’y are in the EJECT Position.
  • Page 30 Fig. D5-2...

  • Page 31: Mechanism Section

    5. Installation of Cassette Up Ass’y A. Confirm that the Locking Tab (L-4) under the Cassette Up Ass’y is in Hole on the Mechanism Chassis when installing the Cassette Up Ass’y. Then, slide the Cassette Up Ass’y towards the back. B.
  • Page 33 6.2.2. Inner Parts Location Fig. J1-1...
  • Page 35 6.2.3. EJECT Position Confirmation Fig. J1-2 6.2.4. Grounding Plate Unit, Full Erase Head, and Cylinder Unit Fig. J2-1-1...
  • Page 36 Fig. J2-1-2...

  • Page 37: Service Notes

    6.2.4.1. Reassembly Notes 1. (Model: A, B, C, D, E, F, I) Adjustment of Grounding Plate Unit A. After installing, make sure that the Grounding Plate Unit, on the top side of mechanism chassis, is positioned on the front side of the Cylinder shaft so that the center line of the plate is just less than 1.0 mm measured from the center of the Cylinder shaft.
  • Page 38 6.2.5. Capstan Belt, Support Angle, Intermediate Gear B, and Main Cam Gear Fig. J3-1 6.2.5.1. Reassembly Notes 1. Alignment of Main Cam Gear, Drive Rack Arm, and Main Rod...
  • Page 39 A. Confirm that the hole on Main Rod is a Through Hole with a hole on chassis. B. Confirm that the hole on Drive Rack Arm is a Through Hole with a hole on chassis. C. Install the Main Cam Gear so that the projection of Main Cam Gear is in the upward position as shown.
  • Page 40 3. Holes on Main Cam Gear A. The EJECT mode Hole on Main Cam Gear should be a Through Hole with Hole A on Support Angle in EJECT mode. The each mode Hole on Main Cam Gear should be a Through Hole with Hole B on Support Angle in each mode.
  • Page 41 6. The Main Cam Push Nut is not reusable. Install a new one. 6.2.6. Center Clutch Unit, Changing Gear Spring, Changing Gear, and Idler Arm Unit Fig. J4-1 6.2.6.1. Reassembly Notes 1. Installation of Center Clutch Unit A. Fit the Center Clutch Unit into the Changing Gear. Fig.
  • Page 42 6.2.7. Reel Gear and Main Rod Fig. J5-1 6.2.7.1. Reassembly Notes 1. Alignment of Main Rod and T Loading Arm Unit A. Align the Gear on T Loading Arm Unit with Gear of Main Rod. Confirm that the Hole on Main Rod is a Through Hole with a hole on chassis.
  • Page 43 6.2.8. Stopper Angle, Capstan Rotor Unit, Oil Seal, Capstan Stator C.B.A., and MR Head Fig. J6-1 6.2.8.1. Reassembly Notes...
  • Page 44 1. Application of Silicon Grease CAUTION: When installing the IC2501 (AN3846SC) or Capstan Stator C.B.A., be sure to apply Silicon Grease (VFK1301) as shown. Be careful not to touch other parts with greased portion to prevent grease depletion. Fig. J6-2 2.
  • Page 45 6.2.9. T Loading Arm Unit and S Loading Arm Unit Fig. J7-1 6.2.9.1. Reassembly Notes 1. Alignment of T Loading Arm Unit and S Loading Arm Unit A. Install the S Loading Arm Unit onto the chassis. B. Install the T Loading Arm Unit so that the hole on T Loading Arm Unit is aligned with the hole on S Loading Arm Unit.
  • Page 46 6.2.10. T Brake Unit, Tension Control Arm Unit, T Reel Table, S Reel Table, and Tension Arm Unit Fig. J8-1 6.2.10.1. Reassembly Notes 1. How to distinguish between S Reel Table and T Reel Table Fig. J8-2...
  • Page 47 6.2.11. Loading Post Base -T Unit and Loading Post Base -S Unit Fig. J9 6.2.12. Opener Piece, Drive Rack Arm, Pinch Arm Unit, P5 Arm Unit, and Intermediate Gear A Fig. J10-1...
  • Page 48 6.2.12.1. Reassembly Notes 1. Installation/Alignment of Intermediate Gear A, Lift Gear and P5 Arm Unit A. Rotate the Lift Gear so that Hole A on Lift Gear is a Through Hole with a hole on chassis. B. Install the Intermediate Gear A so that the hole on Intermediate Gear A is aligned with the hole on Lift Gear.
  • Page 49 6.2.13. Motor Block Unit, Audio Control Head Unit, Lift Gear, Capstan Holder Unit, Tension Arm Boss, and Cleaner Arm Unit Fig. J11 6.3. CASSETTE UP ASS'Y SECTION...
  • Page 50 How to read chart shown above: A: Order of Procedure steps. When reassembling, perform steps(s) in reverse order. These numbers are also used as the identification (location) No. of parts in Figures. B: Steps to be completed prior to the current step. C: Part to be removed or installed.
  • Page 51 6.3.1.1. Reassembly Notes 1. Alignment of Wiper Arm Unit and Drive Rack Unit A. Slide the Drive Rack Unit to the far right as indicated by the arrow. B. Install the Wiper Arm Unit so that the hole on the Wiper Arm Unit is aligned with the hole on the Drive Rack Unit.
  • Page 52 2. Installation of Holder Unit A. Turn the Wiper Arm Unit so that the grooves on each end are aligned with the each groove on Side Plate L and R. B. Insert Holder Unit boss (A) and (B) into the grooves as shown in Fig.

  • Page 53: Adjustment Procedures

    3. Make sure to hook the spring to the Drive Rack Arm of Mechanism chassis. 6.3.2. Opener Lever and Drive Rack Unit Fig. K2 7. ADJUSTMENT PROCEDURES 7.1. SERVICE FIXTURES AND TOOLS 7.2. MECHANICAL ADJUSTMENT 7.2.1. CLEANING PROCEDURE FOR THE UPPER CYLINDER UNIT 1.

  • Page 54: Specification

    moistened with Ethanol. When using a Cleaning Cassette, make sure to use "DRY" type only and be aware that excessive use can shorten head life. Fig. M1 Note: 1. Do not rub vertically or apply excess pressure to the Video Heads. Do not turn the Upper Cylinder Unit clockwise while cleaning.
  • Page 55 2. Insert a Tension Meter into tape path and measure the back tension. Fig. M2-1 3. If the reading is out of specification, make sure that there is no dust or foreign material between the Brake Pad of Tension Control Arm Unit and the S Reel Table.
  • Page 56 Symptom of Misadjustment: If the FG Signal is not properly picked up, Servo Operation cannot be achieved. Equipment Required: Oscilloscope Specification: 0.1 mm ~ 0.13 mm 1. Remove the VCR Chassis Unit and then place it upside down. 2. Remove the Main C.B.A. 3.
  • Page 57 metal particles). Confirmation of Signal Level 1. Place the unit in Service Position (2-1), (2-2). Refer to "SERVICE POSITION" in SERVICE NOTES. 2. Supply a Video Signal to the video input jack. 3. Insert a cassette tape and place the unit in SLP recording mode. 4.
  • Page 58 distorted by any slight variation of the tracking control circuit. Equipment Required: Post Adjustment Driver (VFK0329) 1. Insert the alignment tape. 2. Press and hold VCR/TV button and CH DOWN buttons on VCR together over 5 seconds in power off condition. The power comes on and the unit goes into service mode.
  • Page 59 7. After adjustment, confirm that the tape travels without curling at P2 and P3 posts. Fig. M4-3 8. To release from Tracking center mode, press PLAY or STOP button. 7.2.2.3.2. AUDIO CONTROL HEAD TILT ADJUSTMENT Purpose: To confirm that the tape runs smoothly. In particular, confirm that the tape properly picks up the Audio Signal at the upper part of the head and the Control Signal at the lower part of the head.
  • Page 60 7.2.2.3.3. AUDIO CONTROL HEAD HEIGHT ADJUSTMENT The height of the Audio Control Head replacement part is preset at the factory. Purpose: To be sure the tape runs properly along the Control Head. Symptom of Misadjustment: If the control signal is not properly picked up, Servo Operation cannot be achieved.
  • Page 61 Symptom of Misadjustment: If the position of the Audio Control Head is not properly adjusted, the Audio S/N Ratio is poor. 1. Connect the oscilloscope to the audio output jack on the rear side of the deck. 2. Play back the 6 kHz Monaural Audio portion of the alignment tape. 3.

  • Page 62: Electrical Adjustment

    Fig. M8 7. Tighten Black Screw (D). 8. To release from Tracking center mode, press PLAY or STOP button. Note: Old type of H-Position Adjustment Driver (VFK0136) can be used for this adjustment. 7.3. ELECTRICAL ADJUSTMENT 7.3.1. EVR (Electronic Variable Resister) ADJUSTMENT WITH THE REMOTE CONTROL This unit has electronic technology using I2C Bus concept.The PG SHIFTER ADJUSTMENT is adjusted by using "...
  • Page 63 7.3.4. PG SHIFTER ADJUSTMENT Purpose: Determine the Video Head Switching Point during Playback. Symptom of Misadjustment: May cause Head Switching Noise and/or Vertical Jitter. Test Point : TP3001 (Main C.B.A.), TP6205 (Main C.B.A.) Specification: T = 6 H±0.5 H (0.38 ms±0.03 ms)Mode : SP Playback Mode : SP Playback Equipment :...

  • Page 64: Test Points And Control Location

    3. Connect the channel-1 scope probe to TP3001 and the channel-2 scope probe to TP6205. Used TP6205 as a trigger. 4. Adjust value so that the trailing edge of the head switching pulse is placed 6 H±0.5 H (0.38 ms±0.03 ms) before the start of the vertical sync pulse by pressing CH UP and CH DOWN buttons on the remote control.

  • Page 65: Schematic Diagrams

    8. SCHEMATIC DIAGRAMS 8.1. SCHEMATIC DIAGRAM & CIRCUIT BOARD LAYOUT NOTES 8.2. MAIN SCHEMATIC DIAGRAMS ( Model: PVQ-V201, PV-V4021, PV-V4021-K, VHQ-401, VHQ-41M, PV-V4521-K ) ( Model: PV-V4511, PV-V4521, PV-V4521-K, VHQ-451, PV-V4611 ) 8.3. CAPSTAN STATOR SCHEMATIC DIAGRAM 8.4. INTERCONNECTION SCHEMATIC DIAGRAM 8.5.

  • Page 66: Circuit Board Layout

    8.6. VOLTAGE CHART 9. CIRCUIT BOARD LAYOUT 9.1. MAIN C.B.A. ( Model: PVQ-V201, PV-V4021, PV-V4021-K, VHQ-401, VHQ-41M, PV-V4521-K ) ( Model: PV-V4511, PV-V4521, PV-V4521-K, VHQ-451, PV-V4611 ) 9.2. CAPSTAN STATOR 10. BLOCK DIAGRAMS 10.1. POWER SUPPLY BLOCK DIAGRAM 10.2. VIDEO SIGNAL PATH BLOCK DIAGRAM 10.3.
  • Page 67 11.2. MECHANISM (BOTTOM) SECTION...
  • Page 68 11.3. CASSETTE UP COMPARTMENT SECTION...
  • Page 69 11.4. CHASSIS FRAME AND CASING PARTS SECTION ( Model: PVQ-V201, PV-V4021, PV-V4021-K, VHQ-401, PV-V4511, PV-V4521A )
  • Page 70 ( Model: PV-V4511, PV-V4521, PV-V4521-K, VHQ-451 )
  • Page 71 ( Model: PV-V4611 )

  • Page 72: Packing Parts And Accessories Section

    11.5. PACKING PARTS AND ACCESSORIES SECTION ( Model: PVQ-V201, PV-V4021, PV-V4021-K, VHQ-401, VHQ-41M, PV-V4511, PV-V4521, PV-V4521A, PV- V4521-K, VHQ-451 )
  • Page 73 ( Model: PV-V4611 )

  • Page 74: Replacement Parts Lists

    12. REPLACEMENT PARTS LISTS BEFORE REPLACING PARTS, READ THE FOLLOWING: 12.1. REPLACEMENT NOTES 12.1.1. General Notes 1. Use only original replacement parts:...

  • Page 75: Special Note

    To maintain original function and reliability of repaired units, use only original replacement parts which are listed with their part numbers in the parts list. 2. IMPORTANT SAFETY NOTICE Components identified by the sign have special characteristics important for safety. When replacing any of these components, use only the specified parts.
  • Page 76 - Grounding Plate Unit (Ref. No. 57) - Screw (Ref. No. 430) - Flexible Flat Cable (Ref. No. 718) - Main C.B.A. (Ref. No. E10) When ordering these, be sure to confirm the modelnumber printed on the Model No. Label and order the proper parts according to the replacement parts list.
  • Page 77 COMPLX CMP: Complex Component W FLMPRF: Wirewound Flameproof C.B.A.: Circuit Board Assembly P.C.B.: Printed Circuit Board E.S.D.: Electrostatically Sensitive Devices 3. SERVICE OF CHIP PARTS When servicing chip parts, please use a soldering iron of less than 30 W. Refer to "IC, TRANSISTOR AND CHIP PART INFORMATION"...

  • Page 78: Mechanical Replacement Parts List

    12.2. MECHANICAL REPLACEMENT PARTS LIST MECHANICAL REPLACEMENT PARTS...
  • Page 79 Ref. No. Part No. Part Name & Description Remarks VBSS0033 FULL ERASE HEAD VXKS0901 MOTOR BLOCK UNIT LSDB0045 TENSION ARM BOSS VXDS0212 CAPSTAN HOLDER UNIT LSMD0209 OPENER PIECE VVGS0009 MAIN CAM GEAR KIT LSDR0002 S REEL TABLE LSDR0004 S REEL TABLE LSDR0003 T REEL TABLE LSDR0005...
  • Page 80 Ref. No. Part No. Part Name & Description Remarks LSMB0217 CASSETTE DOOR SPRING VXPS0389 CENTER CLUTCH UNIT VMBS1151 CHANGING GEAR SPRING LSDG0114 CHANGING GEAR VXLS1091 IDLER ARM UNIT VXPS0391 CAPSTAN ROTOR UNIT LSMA0387 STOPPER ANGLE LSMM0003 MAIN ROD VXLS1099 S LOADING ARM UNIT VXLS1098 T LOADING ARM UNIT LSDG0116...
  • Page 82 Ref. No. Part No. Part Name & Description Remarks LSPG1044 PACKING CASE,PAPER ( M ) LSPG1104 PACKING CASE,PAPER ( N ) LSQF0327 FAN BAG ( A ) LSQF0329 FAN BAG ( B,H,I ) LSQF0383 FAN BAG ( C,J ) LSQF0372 FAN BAG ( D ) LSQF0330 FAN BAG ( E,L )

  • Page 83: Electrical Replacement Parts List

    Ref. No. Part No. Part Name & Description Remarks LSJA0360 AC CORD W/PLUG,AC 120V LSJA0358 AC CORD W/PLUG,AC 120V LSJA0359 AC CORD W/PLUG,AC 120V LSJA0361 AC CORD W/PLUG,AC 120V ENG56717G1 TUNER,UHF/VHF NR EYF52BC FUSE HOLDER VEPS6071AA MAIN C.B.A. ( A ) 4 RTL VEPS6071GA MAIN C.B.A.

  • Page 84: Integrated Circuits

    Ref. No. Part No. Part Name & Description Remarks VEPS6071AA MAIN C.B.A. ( A ) E.S.D. RTL VEPS6071GA MAIN C.B.A. ( B,D ) E.S.D. RTL VEPS6071GD MAIN C.B.A. ( C ) E.S.D. RTL VEPS6071GB MAIN C.B.A. ( E ) E.S.D. RTL VEPS6071GE MAIN C.B.A.
  • Page 85 TRANSISTORS Ref. No. Part No. Part Name & Description Remarks Q1001 2SC4533LP.KT TRANSISTOR SI NPN Q1001 2SC5130LF608 TRANSISTOR SI NPN Q1002 2SD1458 TRANSISTOR SI NPN Q1002 2SD2259 TRANSISTOR SI NPN Q1051 2SD2159(T) TRANSISTOR SI NPN Q1051 2SD1581(T) TRANSISTOR SI NPN Q1052 2SD601A(RS) TRANSISTOR SI NPN CHIP...
  • Page 86 Ref. No. Part No. Part Name & Description Remarks Q6510 2SD601A TRANSISTOR SI NPN CHIP ( A,E ) Q6510 2SC2412K146R TRANSISTOR SI NPN CHIP ( A,E ) DIODES Ref. No. Part No. Part Name & Description Remarks D1001 DB105G DIODE SI D1001 S1NB60-4101 DIODE SI...
  • Page 87 Ref. No. Part No. Part Name & Description Remarks R1001 VRESC2TK275 CARBON 1/2W 2.7M R1001 VRESC2TK275C CARBON 1/2W 2.7M R1001 VRESC2TK275T CARBON 1/2W 2.7M R1003 VRESE2TJ334 CARBON 1/2W 330K R1004 ERG2SJ333H METAL OXIDE 2W 33K R1005 ERG1SJ560P METAL OXIDE 1W 56 R1006 ERJ6GEYJ222V MGF CHIP 1/10W 2.2K R1007...
  • Page 88 ( , , , , , )
  • Page 89 Ref. No. Part No. Part Name & Description Remarks R3301 ERJ6GEYJ102V MGF CHIP 1/10W 1K R3302 ERJ6GEYJ392V MGF CHIP 1/10W 3.9K R3305 ERJ6GEYJ152V MGF CHIP 1/10W 1.5K R4001 ERJ6GEYJ103V MGF CHIP 1/10W 10K R4002 ERJ6GEYJ334V MGF CHIP 1/10W 330K R4003 ERJ6GEYJ221V MGF CHIP 1/10W 220 R4004 ERJ6GEYJ333V MGF CHIP 1/10W 33K...
  • Page 91 Ref. No. Part No. Part Name & Description Remarks R6007 ERJ6GEYJ272V MGF CHIP 1/10W 2.7K R6010 ERJ6GEYJ182V MGF CHIP 1/10W 1.8K R6012 ERJ6GEYJ102V MGF CHIP 1/10W 1K R6016 ERJ6GEYJ223V MGF CHIP 1/10W 22K R6019 ERJ6GEYJ221V MGF CHIP 1/10W 220 R6022 ERJ6GEYJ273V MGF CHIP 1/10W 27K R6024 ERJ6GEYJ562V MGF CHIP 1/10W 5.6K...
  • Page 92 ( , , , , ) Ref. No. Part No. Part Name & Description Remarks R6371 ERJ6GEYJ223V MGF CHIP 1/10W 22K ( B,C,D,F,I ) R6373 ERJ6GEYJ272V MGF CHIP 1/10W 2.7K ( B,C,D,F,I ) R6374 ERJ6GEYJ272V MGF CHIP 1/10W 2.7K ( B,C,D,F,I ) R6375 ERJ6GEYJ272V MGF CHIP 1/10W 2.7K ( B,C,D,F,I ) R6376...
  • Page 93 Ref. No. Part No. Part Name & Description Remarks C1012 ECEA1PEE331 ELECTROLYTIC 18V 330UF C1013 ECA1EM331B ELECTROLYTIC 25V 330UF C1016 ECEA1PEE331 ELECTROLYTIC 18V 330UF C1017 ECA0JM102B ELECTROLYTIC 6.3V 1000UF C1018 ECUV1E104KBN C CHIP 25V 0.1UF C1019 ECEA0JEE101 ELECTROLYTIC 6.3V 100UF C1027 ECKATS103MF CERAMIC 250V 0.01UF...
  • Page 94 Ref. No. Part No. Part Name & Description Remarks C3047 ECUV1H181JCN C CHIP 50V 180PF C3048 ECUV1H560JCN C CHIP 50V 56PF C3049 ECUV1E104ZFN C CHIP 25V 0.1UF C3050 ECUV1E104ZFN C CHIP 25V 0.1UF C3051 ECEA0JKA101 ELECTROLYTIC 6.3V 100UF C3052 ECUV1H103ZFN C CHIP 50V 0.01UF C3053 ECEA1HKAR47...
  • Page 96 Ref. No. Part No. Part Name & Description Remarks C4151 ECEA1HKA010 ELECTROLYTIC 50V 1UF ( B,C,D,F ) C4152 ECEA1HKA010 ELECTROLYTIC 50V 1UF ( B,C,D,F ) C4153 ECEA1HKA010 ELECTROLYTIC 50V 1UF ( B,C,D,F ) C4154 ECEA1CKA101 ELECTROLYTIC 16V 100UF ( B,C,D,F ) C4155 ECUV1E104ZFN C CHIP 25V 0.1UF ( B,C,D,F )

  • Page 97: Crystal Oscillator

    Ref. No. Part No. Part Name & Description Remarks C6217 ECUV1E104ZFN C CHIP 25V 0.1UF C6218 ECEA1CKA100 ELECTROLYTIC 16V 10UF C6221 ECEA10JKA220 ELECTROLYTIC 6.3V 22UF C6223 ECUV1H103KBN C CHIP 50V 0.01UF C6224 VCESAM0J331 ELECTROLYTIC 6.3V 330UF C6228 ECUV1E104ZFN C CHIP 25V 0.1UF C6231 ECEA0JKA101 ELECTROLYTIC 6.3V 100UF...
  • Page 98 Ref. No. Part No. Part Name & Description Remarks P3501 LSJWM3N050LL CONNECTOR CABLE W/PLUG,5VP-P ( A ) P3501 LSJWM6N050LL CONNECTOR CABLE W/PLUG,50V ( B,C,D,E,F ) P3501 LSJWM9N050LL CONNECTOR CABLE W/PLUG,5V ( I ) P3502 LSEK0407 SHIELD PLATE UNIT P4001 VJSS0888 FE CONNECTOR 2P P4002 LSJWM6N130LL...

  • Page 99: Integrated Circuits

    JACKS Ref. No. Part No. Part Name & Description Remarks JK3001 LSJH0028 AUDIO/VIDEO JACK SOCKET ( A,B,C,D,E,F ) JK3001 LSJH0055 Hi-Fi AUDIO/VIDEO JACK SOCKET ( I ) JK3002 LSJH0053 AUDIO/VIDEO JACK SOCKET ( B,C,D,F ) JK3002 LSJH0057 AUDIO/VIDEO JACK SOCKET ( I ) MISCELLANEOUS Ref.
  • Page 100 Ref. No. Part No. Part Name & Description Remarks IC1001 0N3131-R.KT IC, LINEAR IC1001 PS2501-1-X IC, LINEAR IC1001 0N3131-S.KT IC, LINEAR IC1002 TA76431AS IC, LINEAR IC1002 TA76431ASTP6 IC, LINEAR IC3001 NN13400A IC, LINEAR IC3101 MN3885S IC, CCD E.S.D. IC4201 AN3663FBP-V IC, LINEAR IC6001 MN101D02FPB...
  • Page 101 Ref. No. Part No. Part Name & Description Remarks Q6006 2SC4081T106R TRANSISTOR SI NPN CHIP Q6009 VEKS5707 PHOTO SENSOR UNIT Q6010 VEKS5707 PHOTO SENSOR UNIT Q6301 IMT17-T110 TRANSISTOR COMPLX CMP SI PNP CHIP ( G,H,J,K,M,N ) Q6302 IMT17-T110 TRANSISTOR COMPLX CMP SI PNP CHIP ( G,H,J,K,M,N ) Q6303 2SB709A TRANSISTOR SI PNP CHIP ( G,H,J,K,M,N )
  • Page 102 Ref. No. Part No. Part Name & Description Remarks D3007 04AZ5.1ZTPA7 DIODE ZENER 5.1V ( H,J,M,N ) D4209 MA165 DIODE SI D4209 1SS119 DIODE SI D4209 1SS133T DIODE SI D6001 VEKS5708 SENSOR LED UNIT D6003 MA165 DIODE SI D6003 1SS119 DIODE SI D6003 1SS133T...
  • Page 103 Ref. No. Part No. Part Name & Description Remarks R1001 VRESC2TK275 CARBON 1/2W 2.7M R1001 VRESC2TK275C CARBON 1/2W 2.7M R1001 VRESC2TK275T CARBON 1/2W 2.7M R1003 VRESE2TJ334 CARBON 1/2W 330K R1004 ERG2SJ333H METAL OXIDE 2W 33K R1005 ERG1SJ560P METAL OXIDE 1W 56 R1006 ERJ6GEYJ222V MGF CHIP 1/10W 2.2K R1007...
  • Page 104 Ref. No. Part No. Part Name & Description Remarks R3031 ERJ6GEYJ474V MGF CHIP 1/10W 470K R3033 ERJ6GEYJ392V MGF CHIP 1/10W 3.9K R3034 ERJ6GEYJ121V MGF CHIP 1/10W 120 R3035 ERJ6GEYJ103V MGF CHIP 1/10W 10K R3036 ERJ6GEYJ122V MGF CHIP 1/10W 1.2K R3041 ERJ6GEYJ750V MGF CHIP 1/10W 75 R3053 ERJ6GEYJ684V MGF CHIP 1/10W 680K...
  • Page 106 Ref. No. Part No. Part Name & Description Remarks R6025 ERJ6GEYJ332V MGF CHIP 1/10W 3.3K R6026 ERJ6GEYJ102V MGF CHIP 1/10W 1K R6027 ERJ6GEYJ101V MGF CHIP 1/10W 100 R6028 ERJ6GEYJ103V MGF CHIP 1/10W 10K R6029 ERJ6GEYJ561V MGF CHIP 1/10W 560 R6030 ERJ6GEYJ102V MGF CHIP 1/10W 1K R6033 ERDS2TJ681...
  • Page 107 ( , , , , , ) Ref. No. Part No. Part Name & Description Remarks R6379 ERDS2TJ102 CARBON 1/4W 1K ( G,H,J,K,M,N ) R6380 ERDS2TJ102 CARBON 1/4W 1K ( G,H,J,K,M,N ) R6381 ERDS2TJ102 CARBON 1/4W 1K ( G,H,J,K,M,N ) R6382 ERDS2TJ102 CARBON 1/4W 1K ( G,H,J,K,M,N )
  • Page 108 Ref. No. Part No. Part Name & Description Remarks C1030 VCYSBRE183KX CERAMIC 25V 0.018UF C1032 ECEA0JKA221 ELECTROLYTIC 6.3V 220UF C1051 ECEA1HKAR47 ELECTROLYTIC 50V 0.47UF C1052 ECEA1CKA100 ELECTROLYTIC 16V 10UF C1058 ECEA0JEE101 ELECTROLYTIC 6.3V 100UF C1059 ECEA1CKA470 ELECTROLYTIC 16V 47UF C3001 ECA0JM471 ELECTROLYTIC 6.3V 470UF C3003...
  • Page 110 Ref. No. Part No. Part Name & Description Remarks C3308 ECUV1E104ZFN C CHIP 25V 0.1UF C3501 ECUV1E104ZFN C CHIP 25V 0.1UF C3502 ECUV1E104ZFN C CHIP 25V 0.1UF C3503 ECUV1E104ZFN C CHIP 25V 0.1UF C3504 ECUV1E104ZFN C CHIP 25V 0.1UF C3505 ECUV1E104ZFN C CHIP 25V 0.1UF C3506...
  • Page 111 Ref. No. Part No. Part Name & Description Remarks C4452 ECUV1H103KBN C CHIP 50V 0.01UF C4455 ECUV1E104KBN C CHIP 25V 0.1UF C4456 ECUV1E104KBN C CHIP 25V 0.1UF C4459 ECEA0JKA101 ELECTROLYTIC 6.3V 100UF C4901 ECEA1HKA010 ELECTROLYTIC 50V 1UF C4902 ECEA1HKA2R2 ELECTROLYTIC 50V 2.2UF C4903 ECEA1HKA3R3 ELECTROLYTIC 50V 3.3UF...
  • Page 112 Ref. No. Part No. Part Name & Description Remarks L1001 ELF15N005A LINE FILTER 0.5A 18MH L1001 LSLQ0287 LINE FILTER 0.5A 18MH L1001 VLQS0166 LINE FILTER 0.5A 18MH L1001 VLQS0167 LINE FILTER 0.5A 18MH L1001 VLQS0170 LINE FILTER 0.6A 18MH L1002 VLQSAB7D220K COIL 22UH L1003 VLQSAB7D100K COIL 10UH...
  • Page 113 Ref. No. Part No. Part Name & Description Remarks SW6001 LSSH0002 LEAF SWITCH-SAFETY TAB SW6002 LSSS0012 MODE SELECT SWITCH SW6301 EVQ11A09K PUSH SWITCH SW6302 EVQ11A09K PUSH SWITCH ( L ) SW6303 EVQ11A09K PUSH SWITCH ( G,H,J,K,M,N ) SW6304 EVQ11A09K PUSH SWITCH ( L ) SW6306 EVQ11A09K PUSH SWITCH ( G,H,J,K,M,N ) SW6307 EVQ11A09K...
  • Page 114 Ref. No. Part No. Part Name & Description Remarks LSSZ0004 INFRARED RECEIVER UNIT LSSZ0001 LED DISPLAY PANEL ( G,H,J,K,M,N ) LSSZ0002 LED DISPLAY PANEL ( L ) LSJW0023 FLEXIBLE FLAT CABLE W/OUT PLUG, LSJA0360 AC CORD W/PLUG,AC 120V LSJA0358 AC CORD W/PLUG,AC 120V LSJA0359 AC CORD W/PLUG,AC 120V LSJA0361...
  • Page 115 NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MAIN C.B.A. (POWER SUPPLY/VIDEO/AUDIO SECTION) MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP PIN NO.
  • Page 116 NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MAIN C.B.A. (SYSTEM CONTROL/SERVO SECTION) CAPSTAN STATOR C.B.A. MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY PIN NO.
  • Page 117 1. Important safety notice 3. Parts enclosed in dashed lines marked "Z" are not used Components identified by the sign have special in any models included in this service manual. characteristics important for safety. When replacing any Example: of these components. Use only the specified parts. C3010 0.01 2.
  • Page 118 INTERCONNECTION SCHEMATIC DIAGRAM NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 PV-V4021-K - - - - - - - - VHQ-401 VHQ-41M PV-V4511 PV-V4521 CYLINDER UNIT MAIN C.B.A.
  • Page 119 CAPSTAN STATOR SCHEMATIC DIAGRAM NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 PV-V4021-K NOTE: CAPSTAN SERVO - - - - - - - - WHEN INSTALLING THE IC2501(AN3845SC) OR CAPSTAN STATOR C.B.A., BE SURE TO APPLY SILICON GREASE(VFK1301).
  • Page 120 MAIN I (SYSTEM CONTROL/ SERVO) SCHEMATIC DIAGRAM (G, H, J, K, L, M, N) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 KEY MATRIX CHART ( Model: L ) ( Model: G, H , J ) ( Model: M )
  • Page 121 MAIN II (SIGNAL PROCESS/AUDIO) SCHEMATIC DIAGRAM (G, H, J, K, L, M, N) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 REC VIDEO SIGNAL PB VIDEO SIGNAL REC AUDIO SIGNAL PB AUDIO SIGNAL...
  • Page 122 IC3001 VIDEO/AUDIO SIGNAL PROCESS / HEAD AMP IC- DETAIL BLOCK DIAGRAM, MN13400A V-REG AT ENV S-VHS PHASE 8MHz TRAP COMPENSATOR CLIP PB:OFF MAIN MUTE S-VHS EMPHASIS TUNER DOUBLE ARTFICIAL PEAKING LIMITER MODULATOR BPF & LINE 1 SYNC MIX GAIN CTL AMP CLAMP 629KHz MAIN...
  • Page 123 MAIN III (OPERATION) SCHEMATIC DIAGRAM (G, H, J, K, L, M, N) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK G,H,J,K,M,N PVQ-V201 U6301 LSSZ0001 (DISPLAY TUBE UNIT) U6301 LSSZ0002 (DISPLAY TUBE UNIT)
  • Page 124 MAIN IV (Hi-Fi) SCHEMATIC DIAGRAM (G, H, J, K, L, M, N) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 PV-V4021-K - - - - - - - - VHQ-401 VHQ-41M PV-V4511...
  • Page 125 MAIN V (POWER SUPPLY) SCHEMATIC DIAGRAM (G, H, J, K, L, M, N) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 PV-V4021-K - - - - - - - - VHQ-401 VHQ-41M IMPORTANT SAFETY NOTICE:...
  • Page 126 MAIN I (SYSTEM CONTROL/ SERVO) SCHEMATIC DIAGRAM (A, B, C, D, E, F, I) KEY MATRIX CHART NOTE: COMPARISON CHART ( Model: A, E, F ) ( Model: B, C, I ) OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, SCAN 1 SCAN 2 SCAN 1...
  • Page 127 MAIN II (SIGNAL PROCESS/AUDIO) SCHEMATIC DIAGRAM (A, B, C, D, E, F, I) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 REC VIDEO SIGNAL PB VIDEO SIGNAL REC AUDIO SIGNAL PB AUDIO SIGNAL...
  • Page 128 IC3001 VIDEO/AUDIO SIGNAL PROCESS / HEAD AMP IC- DETAIL BLOCK DIAGRAM, MN13400A V-REG AT ENV S-VHS PHASE 8MHz TRAP COMPENSATOR CLIP PB:OFF MAIN MUTE S-VHS EMPHASIS TUNER DOUBLE ARTFICIAL PEAKING LIMITER MODULATOR BPF & LINE 1 SYNC MIX GAIN CTL AMP CLAMP 629KHz MAIN...
  • Page 129 MAIN III (OPERATION) SCHEMATIC DIAGRAM (A, B, C, D, E, F, I) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK B,C,D,F,I U6301 LSSZ0001 (DISPLAY TUBE UNIT) U6301 LSSZ0002 (DISPLAY TUBE UNIT)
  • Page 130 MAIN IV (Hi-Fi) SCHEMATIC DIAGRAM (I) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 PV-V4021-K - - - - - - - - VHQ-401 VHQ-41M PV-V4511...
  • Page 131 MAIN V (POWER SUPPLY) SCHEMATIC DIAGRAM (A, B, C, D, E, F, I) NOTE: COMPARISON CHART OF MODELS & MARKS FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PVQ-V201 PV-V4021 PV-V4021-K - - - - - - - - VHQ-401 VHQ-41M PV-V4511...
  • Page 132 CAPSTAN STATOR C.B.A. VEMS0342 C2508 C2506 P2503 C2504 C2509 IC2501 C2520 C2505 C2523 Q2503 R2501 R2502 CAPSTAN IC2505 COIL C2524 CAPSTAN C2521 CAPSTAN COIL COIL Q2501 CAPSTAN CAPSTAN C2511 COIL COIL P2502 C2522 CAPSTAN COIL C2525 Q2502 VJBS2007 NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION.
  • Page 133 MAIN C.B.A. VEPS6070HE (G) / VEPS6070HB (H) VEPS6070HK (J) / VEPS6070HD (K) / VEPS6070HA (L) / VEPS607HC (M) / VEPS6070HH (N) CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, IMPORTANT SAFETY NOTICE: NOTE: NOTE: REPLACE ONLY WITH THE SAME TYPE 1.6A 125V FUSE. COMPONENTS IDENTIFIED BY THE SIGN HAVE CIRCUIT BOARD LAYOUT SHOWS COMPONENTS INSTALLED FOR VARIOUS MODELS.
  • Page 134 MAIN C.B.A. VEPS6071AA (A) / VEPS6071GA (B,D) / VEPS6071GD (C) / VEPS6071GB (E) / VEPS6071GE (F) / VEPS6071HA (I) CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, IMPORTANT SAFETY NOTICE: NOTE: NOTE: REPLACE ONLY WITH THE SAME TYPE 1.6A 125V FUSE. COMPONENTS IDENTIFIED BY THE SIGN HAVE CIRCUIT BOARD LAYOUT SHOWS COMPONENTS INSTALLED FOR VARIOUS MODELS.
  • Page 135 MAIN C.B.A. PV-V4021, PV-V4021-K, IC6001 IC6301 PV-V4021,PV-V4021-K,VHQ-41M,PV-V4511, PV-V4031S, PV-V4511, (SYSTEM CONTROL MICROCONTROLLER ) (INDICATOR PANEL CONTROL) PV-V4521,PV-V4521A,PV-V4521-K,PV-V4611 PVQ-V201, VHQ-401, PV-V4521, PV-V4521A, VHQ-41M, VHQ-451 PV-V4521-K, PV-V4531S PV-V4611, PV-V4611-K SCAN 1 SCAN 2 SCAN 1 SCAN 2 SCAN 1 SCAN 2 DIGIT 1 Q6301 PIN 93 PIN 94...
  • Page 136 AUDIO CONTROL HEAD UNIT MAIN C.B.A. TP6206 IC6001 (SERVO MICROCONTROLLER) TP6003 P4092 P4002 (FROM IC3001(20)) CONTROL REC CTL ENVELOPE ENVELOPE P4092 P4002 HEAD DETECTOR VOLTAGE PB-ON NEGATIVE PB CTL SLICER CAPSTAN STATOR C.B.A. V-LOCK 1/2 Vcc (TO IC3001(93)) PULSE V-LOCK PULSE GENERATOR CAPSTAN COIL...
  • Page 137 CAPSTAN STATOR C.B.A. MAIN C.B.A. IC2501 (LOADING MOTOR DRIVE) IC6001 (SYSTEM CONTROL MICROCONTROLLER) LOADING MOTOR SW6002 (MODE SELECT SWITCH) P2502 P6201 FORWARD(H) PIN NO. OF IC6001 P2502 P6201 LOADING MOTOR TP6019 LOADING MODE (97) (96) (95) REVERSE(H) MOTOR MODE SW POSITION C FF/REW P2503 TP6018...
  • Page 138 REC AUDIO SIGNAL PB AUDIO SIGNAL MAIN C.B.A. UHF/VHF TUNER/TV DEMODULATOR UNIT (TO IC6001(82)) MTS MODE (FROM IC6001(26)) R4227 (TO IC6001(60)) AUDIO 3.58MHz AUDIO DEFEAT(H) (TO IC6001(29)) Hi-Fi PB(H) C4921 IC4201 (Hi-Fi AUDIO SIGNAL PROCESS) FL4901 MTS/SAP 4.5MHz SIGNAL PROCESS CYLINDER UNIT MUTE DETECTOR...
  • Page 139 REC AUDIO SIGNAL PB AUDIO SIGNAL MAIN C.B.A. UHF/VHF TUNER/TV DEMODULATOR UNIT AUDIO AUDIO Q4001 (WITHOUT Hi-Fi AUDIO) Q4002 C4018 R4018 Q4003 IC3001 (AUDIO SIGNAL PROCESS) AUDIO CONTROL (WITHOUT AGC DET REC-OFF HEAD UNIT TUNER FRONT A/V JACK) J4002 AUDIO LINE REC-ON P4002...
  • Page 140 REC VIDEO SIGNAL PB VIDEO SIGNAL MAIN C.B.A. J6003 (FROM IC6001(23)) HEAD SW PULSE (WITH 2 HEAD) UHF/VHF TUNER/TV DEMODULATOR UNIT (FROM IC6001(98)) ROTARY SW (WITH 4 HEAD) VIDEO VIDEO (TO IC6001(78)) ENVELOPE VOLTAGE IC3101 CCD 1H DELAY CYLINDER UNIT IC3001 (VIDEO SIGNAL PROCESS/HEAD AMP) P3501...
  • Page 141 MAIN C.B.A. Q1080 TP1080 TP1081 D1082 +22V UNSW+14V REGULATOR (FROM IC6001(84)) Q1081 SW+22V ON (H) NOT USED Q1082 D1086 NOT USED +14V REGULATOR (FROM IC6001(86)) L1001 T1001 SW+14V ON (H) Q1083 F1001 D1001 C1011 AC CORD 125V/1.6A D1005 TP1002 LINE FULL-WAVE SMOOTHING RECTIFIER...
  • Page 142 NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. COMPARISON CHART +1.000Vp-p +240mVp-p +40mVp-p V1 +5.2Vp-p +240mVp-p +240mVp-p +240mVp-p OF MODELS & MARKS MODEL MARK PVQ-V201 PV-V4021 PV-V4021-K PIN 100 OF IC3001 PIN 92 OF IC3001 PIN 67 OF IC3001 PIN 93 OF IC3001 CUE/REV...
  • Page 143 NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. COMPARISON CHART +1.80Vp-p +2.500VDC +5.00Vp-p +4.0Vp-p +90Vp-p +0.44Vp-p OF MODELS & MARKS MODEL MARK PVQ-V201 PV-V4021 PV-V4021-K CH1 PIN 5 OF P3501 TP6209 REC/PB TP6205 REC/PB PIN 7 OF T1001 POWER ON...
  • Page 144 ORDER NO. MKE0107010S1 Video Cassette Recorder PVQ-V201 / PV-V4021 / PV-V4021-K / PV-V4521A / PV-V4621-K / VHQ-401 / VHQ-41M / PV-V4511 / PV-V4521 / PV-V4521-K PV-V4531-K / PV-451-K / PV-V4601 / PV-V4611 / VHQ-451 / PV-V4621 / PV- V4661-K / PV-VS4821 / PV-VS4821-K Main circuit board Modification Please use this manual together with the Service Manual for Order No.
  • Page 145 1.2. Schematic Diagram & Circuit Board Layout...
  • Page 146 Main I Partial Schematic Diagram R6054 R6055 SUPPLY PHOTO TR(L) R6056 TAKEUP PHOTO TR(L) CTL PULSE(-) R6103 ENV-VOLTAGE CTL PULSE(+) TP6210 PB CONTROL TP6207 C6223 PULSE WF22 C6216 0.01 0.01 63 64 65 66 67 68 69 70 71 72 73 74 75 IC6001 TP6206 SYSTEM CONTROL/SERVO/TIMER...

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