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Panasonic PV-V4525S Service Manual
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Panasonic PV-V4525S Service Manual

Panasonic PV-V4525S Service Manual

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For servicing the R4-Mechanism Chassis for PV-Model, Please refer to the R4-Mechanism Chassis for PV-
Model Service Manual (Order No. MKE0401000C1).
Video Cassette Recorder
PV-V4525S
PV-V4535S-K
PV-455S-K
© 2005 Matsushita Kotobuki Electronics Industries
Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
ORDER NO. MKE0501001C1
B3

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  • Page 1 ORDER NO. MKE0501001C1 Video Cassette Recorder PV-V4525S PV-V4535S-K PV-455S-K For servicing the R4-Mechanism Chassis for PV-Model, Please refer to the R4-Mechanism Chassis for PV- Model Service Manual (Order No. MKE0401000C1). © 2005 Matsushita Kotobuki Electronics Industries Ltd. All rights reserved. Unauthorized copying and...

  • Page 2: Table Of Contents

    PV-V4525S / PV-V4535S-K / PV-455S-K CONTENTS Page Page 1 SAFETY PRECAUTIONS 5.1. CABINET SECTION 2 PREVENTION OF ELECTRO-STATIC DISCHARGE (ESD) TO 5.2. MECHANISM SECTION ELECTROSTATICALLY SENSITIVE (ES) DEVICES 6 ADJUSTMENT PROCEDURES 3 ABOUT LEAD FREE SOLDER (PbF) 6.1. MECHANICAL ADJUSTMENT 4 SERVICE NOTES (PLEASE READ) 6.2.

  • Page 3: Safety Precautions

    PV-V4525S / PV-V4535S-K / PV-455S-K 1 SAFETY PRECAUTIONS GENERAL GUIDELINES a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned 1. IMPORTANT SAFETY NOTICE to the customer. There are special components used in this equipment which are important for safety.

  • Page 4: Prevention Of Electro-Static Discharge (Esd) To

    PV-V4525S / PV-V4535S-K / PV-455S-K 2 PREVENTION OF ELECTRO-STATIC DISCHARGE (ESD) TO ELECTROSTATICALLY SENSITIVE (ES) DEVICES Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits, some field-effect transistors and semiconductor "chip"...

  • Page 5: About Lead Free Solder (Pbf)

    PV-V4525S / PV-V4535S-K / PV-455S-K 3 ABOUT LEAD FREE SOLDER (PbF) Distinction of PbF PCB: PCBs (manufactured) using lead free solder will have a printing on the PCB. (Please refer to figures.) CAUTION: · Pb free solder has a higher melting point than standard solder;...

  • Page 6: Service Notes (Please Read)

    PV-V4525S / PV-V4535S-K / PV-455S-K 4 SERVICE NOTES (PLEASE READ) 4.1.1. Explanation of I C bus 4.1. SELF-DIAGNOSIS INDICATION transmission number DISPLAY The condition of I C bus transmission befor shut off is This VCR has a self-diagnosis and display function.
  • Page 7 PV-V4525S / PV-V4535S-K / PV-455S-K 4.1.3. Explanation of Error code number The detecting condition and movement of mechanism is displayed. Fig. 1-5...

  • Page 8: Usage Screen Mode

    PV-V4525S / PV-V4535S-K / PV-455S-K 4.1.3.1. Reason of Ejection RESET button on remote controller in this mode. Total elapsed “Cylinder rotation” time (in hours) will be cleared When an error code is 80, the reason of ejection is displayed to 0.

  • Page 9: Hot Circuit

    PV-V4525S / PV-V4535S-K / PV-455S-K 4.4.2. Service Position (2) 4.6. SERVICE MODE Turn on the power and insert the Cassette tape. In order to inhibit detection of the Supply & Takeup Photo Transistors, Reel Sensor, and Cylinder Lock can be inhibited.

  • Page 10: Tracking Center Mode (Tracking Fix At Center)

    PV-V4525S / PV-V4535S-K / PV-455S-K 4.9. HOW TO RESET ALL VCR MEMORY FUNCTIONS To reset (clear) the select language, channel auto set and set clock functions to their initial power on condition (power on, no cassette inserted), hold down the PLAY and CH DOWN buttons on the VCR together for more than 5 seconds.

  • Page 11: How To Confirm Auto Clock Set Feature

    PV-V4525S / PV-V4535S-K / PV-455S-K 4.11. HOW TO CONFIRM AUTO CLOCK SET FEATURE 1. Connect an RF cable from the output of one unit to the input of the test unit. 2. Select corresponding RF channels. 3. Playback a recording of P.B.S. channel including clock set data and confirm this feature.

  • Page 12: Disassembly/Assembly Procedures

    PV-V4525S / PV-V4535S-K / PV-455S-K 5 DISASSEMBLY/ASSEMBLY PROCEDURES 5.1. CABINET SECTION 5.1.1. Disassembly Flowchart Perform disassembly procedures in the order described in the CAUTION: “Disassembly Flowchart” shown below. When reassembling, Disconnect AC plug before disassembly or assembly. use the reverse procedure.
  • Page 13 PV-V4525S / PV-V4535S-K / PV-455S-K Fig. D2...

  • Page 14: Mechanism Section

    PV-V4525S / PV-V4535S-K / PV-455S-K 5.1.1.1. Notes in chart 1. Installation of Top Panel Install the Top Panel front portion at a downward angle so that the tab on the Front Panel Ass’y fits into the hole in the Top Panel.

  • Page 15: Adjustment Procedures

    PV-V4525S / PV-V4535S-K / PV-455S-K 6 ADJUSTMENT PROCEDURES 6.2.4. PG SHIFTER ADJUSTMENT 6.1. MECHANICAL ADJUSTMENT Purpose: Determine the Video Head Switching Point during Refer to the Service Manual for R4-Mechanism Chassis for PV- Playback. Model (Order No. MKE0401000C1). Symptom of...

  • Page 16: Test Points And Control Location

    PV-V4525S / PV-V4535S-K / PV-455S-K 5. After adjustment is completed, press REC button on the remote. Then " COMP " will appear on the TV monitor and adjusted value will be written to Memory IC (IC6004). Fig.E4 6. Press STOP button on the remote to release from EVR PG SHIFTER ADJUSTMENT MODE.

  • Page 17: Schematic Diagrams

    PV-V4525S / PV-V4535S-K / PV-455S-K 7 SCHEMATIC DIAGRAMS 7.1. SCHEMATIC DIAGRAM & CIRCUIT BOARD LAYOUT NOTES 1. Important safety notice 3. Parts marked "PT" are not used in any models included Components identified by the sign have special in this service model.

  • Page 18: Main Schematic Diagrams

    PV-V4525S / PV-V4535S-K / PV-455S-K 7.2. MAIN SCHEMATIC DIAGRAMS MAIN I (SYSTEM CONTROL / SERVO) SCHEMATIC DIAGRAM NOTE: For placing a purchase order of the parts, NOTE: NOTE: be sure to use the part number listed in the parts list.
  • Page 19 PV-V4525S / PV-V4535S-K / PV-455S-K I/O CHART OF IC6001 IC6201 CYLINDER/LOADING MOTOR DRIVE IC-DETAIL BLOCK DIAGRAM Signal Name Description Signal Name Description CYLINDER SERVO KEY 1 Input terminal for the KEY OPERATION DATA 1. 51 BW H/COLOR L Not used.
  • Page 20 PV-V4525S / PV-V4535S-K / PV-455S-K MAIN II (VIDEO SIGNAL PROCESS / AUDIO) SCHEMATIC DIAGRAM COMPARISON CHART OF NOTE: MODELS & MARKS For placing a purchase order of the parts, NOTE: MODEL MARK NOTE: be sure to use the part number listed in the parts list.
  • Page 21 PV-V4525S / PV-V4535S-K / PV-455S-K IC3001 VIDEO/AUDIO SIGNAL PROCESS/HEAD AMP IC-DETAIL BLOCK DIAGRAM REC VIDEO SIGNAL PB VIDEO SIGNAL REC AUDIO SIGNAL PB AUDIO SIGNAL INVERT X-TAL CLOCK DOWN CR DET VCO/OSC LCVCO DRIVER CONV COME 2FSC Y-CCD CHROMA KILLER...
  • Page 22 PV-V4525S / PV-V4535S-K / PV-455S-K MAIN III (OPERATION) SCHEMATIC DIAGRAM NOTE: For placing a purchase order of the parts, NOTE: NOTE: be sure to use the part number listed in the parts list. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, PARTS MARKED "PT"...
  • Page 23 PV-V4525S / PV-V4535S-K / PV-455S-K MAIN IV (Hi-Fi) SCHEMATIC DIAGRAM NOTE: COMPARISON CHART OF For placing a purchase order of the parts, NOTE: MODELS & MARKS NOTE: be sure to use the part number listed in the parts list. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, PARTS MARKED "PT"...
  • Page 24 PV-V4525S / PV-V4535S-K / PV-455S-K IC4201 Hi-Fi AUDIO/MTS SAP SIGNAL PROCESS IC-DETAIL BLOCK DIAGRAM REC AUDIO SIGNAL PB AUDIO SIGNAL DEMODULATOR BLOCK IIC BUS PNR RCH INTERFACE MTS/SAP AGC & NOISE DEMODULATOR SWITCH DBX NOISE REDUCTION MODULATOR/ DEMODULATOR OUTPUT SELECT...
  • Page 25 PV-V4525S / PV-V4535S-K / PV-455S-K MAIN V (POWER SUPPLY) SCHEMATIC DIAGRAM NOTE: NOTE: COMPARISON CHART OF For placing a purchase order of the parts, FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, MODELS & MARKS NOTE: REFER TO BEGINNING OF SCHEMATIC SECTION.
  • Page 26 PV-V4525S / PV-V4535S-K / PV-455S-K MAIN VI (DECODER) SCHEMATIC DIAGRAM NOTE: COMPARISON CHART OF For placing a purchase order of the parts, NOTE: MODELS & MARKS NOTE: be sure to use the part number listed in the parts list. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, PARTS MARKED "PT"...

  • Page 27: Interconnection Schematic Diagram

    PV-V4525S / PV-V4535S-K / PV-455S-K 7.3. INTERCONNECTION SCHEMATIC DIAGRAM INTERCONNECTION SCHEMATIC DIAGRAM COMPARISON CHART OF MODELS & MARKS MODEL MARK FULL ERASE HEAD MAIN C.B.A. CAPSTAN MOTOR ASS'Y PV-V4525S PV-V4535S-K P4001 P6201 P0201 PV-455S-K (2 Pins) (8 Pins) TUNER UHF/VHF...

  • Page 28: Voltage Chart

    PV-V4525S / PV-V4535S-K / PV-455S-K 7.4. VOLTAGE CHART MAIN C.B.A. (SYSTEM CONTROL/SERVO/OPERATION SECTION) MODE REC PLAY MODE REC PLAY MODE REC PLAY MODE REC PLAY MODE REC PLAY NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, PINNO. PINNO. PINNO.
  • Page 29 PV-V4525S / PV-V4535S-K / PV-455S-K MAIN C.B.A. (POWER SUPPLY/VIDEO/AUDIO SECTION) MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 30 PV-V4525S / PV-V4535S-K / PV-455S-K...

  • Page 31: Circuit Board Layout

    PV-V4525S / PV-V4535S-K / PV-455S-K 8 CIRCUIT BOARD LAYOUT 8.1. MAIN C. B. A. MAIN C.B.A. LSEP2202HV (A) / LSEP2202HK (B,C) NOTE: CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, IMPORTANT SAFETY NOTICE: NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES,...
  • Page 32 PV-V4525S / PV-V4535S-K / PV-455S-K...

  • Page 33: Block Diagrams

    PV-V4525S / PV-V4535S-K / PV-455S-K 9 BLOCK DIAGRAMS POWER SUPPLY BLOCK DIAGRAM STOP 14Vp-p POWER TRANSFORMER T1001 5µs IC1202 5V SW TO SERVO SW +5V MTR UNSW +6V TO AUDIO REG. (CAPSTAN/IC6201) TP1007 D1001, L1001 C1005 AC CORD TP1203 D1002...
  • Page 34 PV-V4525S / PV-V4535S-K / PV-455S-K VIDEO SIGNAL PATH BLOCK DIAGRAM REC/PB 1.1Vp-p REC VIDEO SIGNAL PB VIDEO SIGNAL 0.5V 20µs JK3001 IC6001 IC3001 (AUDIO/VIDEO SIGNAL PROCESSOR) (REAR JACK) TP3001 TP6008 Q3301 VIDEO SIGNAL 2MHz PROCESS TP6010 SQUELCH SVHS -6dB -4dB...
  • Page 35 PV-V4525S / PV-V4535S-K / PV-455S-K AUDIO SIGNAL PATH BLOCK DIAGRAM REC AUDIO SIGNAL PB AUDIO SIGNAL IC4201 JK3002 (FRONT JACK) AUDIO IN2 (R) TP4503 TP4502 AUDIO IN2 (L) IIC CLOCK TO/FROM IIC BUS SYSTEM INTERFACE CONTROL IIC DATA JK3001 (REAR JACK)
  • Page 36 PV-V4525S / PV-V4535S-K / PV-455S-K SYSTEM CONTROL / SERVO BLOCK DIAGRAM IC0201 (CAPSTAN MOTOR DRIVE) IC6001 (SYSTEM CONTROL & SERVO) +16V P0201 P6201 REC/PB U6301 CAPSTAN MOTOR TP6036 (LED DISPLAY PANEL) +2.5VDC COILS REC/PB REC/PB P0201 P6201 MOTOR DIFFERENTIAL TORQUE...

  • Page 37: Exploded Views

    PV-V4525S / PV-V4535S-K / PV-455S-K 10 EXPLODED VIEWS 10.1. MECHANISM SECTION...

  • Page 38: Chassis Frame And Casing Parts Section

    PV-V4525S / PV-V4535S-K / PV-455S-K 10.2. CHASSIS FRAME AND CASING PARTS SECTION...

  • Page 39: Packing Parts And Accessories Section

    PV-V4525S / PV-V4535S-K / PV-455S-K 10.3. PACKING PARTS AND ACCESSORIES SECTION...

  • Page 40: Replacement Parts Lists

    PV-V4525S / PV-V4535S-K / PV-455S-K 11 REPLACEMENT PARTS LISTS BEFORE REPLACING PARTS, READ THE FOLLOWING: a new one. 11.1. REPLACEMENT NOTES 11.1.3. Electrical Replacement Notes 1. Unless otherwise specified; 11.1.1. General Notes All resistors are in W, K = 1,000 W, M = 1,000 kW.

  • Page 41: Mechanical Replacement Parts List

    PV-V4525S / PV-V4535S-K / PV-455S-K 11.2. MECHANICAL REPLACEMENT Ref. Part No. Part Name & Description Remarks PARTS LIST LSGP0439 CASSETTE DOOR-LID LSMB0310 CASSETTE DOOR SPRING LSGF0531 POWER BARRIER COMPARISON CHART OF MODELS & MARKS VMX3115 MECHA SPACER F VMX3272 MECHA SPACER R...
  • Page 42 PV-V4525S / PV-V4535S-K / PV-455S-K PRINTED CIRCUIT BOARD ASSEMBLY Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks Q6004 2SB0709A0L TRANSISTOR SI PNP CHIP LSEP2202HV MAIN C.B.A. ( A ) E.S.D. Q6004 B1ADCC000004...
  • Page 43 PV-V4525S / PV-V4535S-K / PV-455S-K RESISTORS Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R4219 ERJ3GEYJ822V MGF CHIP 1/16W 8.2K R1001 D0AF275KA002 CARBON 1/2W 2.7M R4220 ERJ3GEYJ822V MGF CHIP 1/16W 8.2K R1002...
  • Page 44 PV-V4525S / PV-V4535S-K / PV-455S-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R6113 ERJ3GEYJ103V MGF CHIP 1/16W 10K C1205 ECEA1CKA220 ELECTROLYTIC 16V 22UF R6114 ERJ3GEYJ273V MGF CHIP 1/16W 27K C1206 F1H1C104A008 C CHIP 16V 0.1UF...
  • Page 45 PV-V4525S / PV-V4535S-K / PV-455S-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C4206 ECEA1CKA100 ELECTROLYTIC 16V 10UF C6201 ECJ1VB1H103K C CHIP 50V 0.01UF C4207 ECEA1EKA4R7 ELECTROLYTIC 25V 4.7UF C6202 ECJ1VB1C563K C CHIP 16V 0.056UF...
  • Page 46 PV-V4525S / PV-V4535S-K / PV-455S-K CRYSTAL OSCILLATOR Ref. Part No. Part Name & Description Remarks X3001 H0D357400068 CRYSTAL OSCILLATOR X6001 H0D120500017 CRYSTAL OSCILLATOR PIN HEADERS Ref. Part No. Part Name & Description Remarks P3501 VEE0X50 GROUNDING WIRE P4001 K1MZ02A00003 FE CONNECTOR 2P...

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