Panasonic PV-20DF25 Service Manual
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Panasonic PV-20DF25 Service Manual

Tv/dvd combination
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TV/DVD Combination
PV-20DF25
PV-27DF25
PV-27DF5
PV-20DF25-K
PV-27DF25-K
© 2005 Matsushita Kotobuki Electronics Industries
LTD. All rights reserved. Unauthorized copying and
distribution is a violation of law.
ORDER NO. MKE0503601C1
B6, B22

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  • Page 1 ORDER NO. MKE0503601C1 B6, B22 TV/DVD Combination PV-20DF25 PV-27DF25 PV-27DF5 PV-20DF25-K PV-27DF25-K © 2005 Matsushita Kotobuki Electronics Industries LTD. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K CONTENTS Page Page 1 SAFETY PRECAUTIONS 8.2. MAIN SCHEMATIC DIAGRAMS 1.1. GENERAL GUIDELINES 8.3. DEFLECTION SCHEMATIC DIAGRAMS 1.2. LEAKAGE CURRENT COLD CHECK 8.4. OPERATION / CRT (Models : PV-20DF25 / PV-20DF25- 1.3.

  • Page 3: Safety Precautions

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 1.2. LEAKAGE CURRENT COLD 1 SAFETY PRECAUTIONS CHECK 1.1. GENERAL GUIDELINES 1. Unplug the AC cord and connect a jumper between the two 1. IMPORTANT SAFETY NOTICE prongs on the plug.

  • Page 4: Horizontal Oscillator Disable Circuit Test

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 2.2. REPAIR PROCEDURES OF 2 X-RADIATION HORIZONTAL OSCILLATOR WARNING : DISABLE CIRCUIT 1. The potential source of X-Radiation in TV sets is the High Voltage section and the picture tube. 1. Connect a DC voltmeter between capacitor C513 (+) on the 2.

  • Page 5: Laser Product

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 2.4. LASER PRODUCT CLASS I LASER PRODUCT · This equipment is certified to comply with DHHS Rules 21 CFR Chapter 1, Subchapter J in effect as of date of manufacture. (Only for U.S.A.)

  • Page 6: Prevention Of Electrostatic Discharge (Esd) To Electrostatically Sensitive (Es) Devices

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 3 PREVENTION OF ELECTROSTATIC 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 and some field-effect transistors are semiconductor "chip"...

  • Page 7: About Lead Free Solder (Pbf)

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 4 ABOUT LEAD FREE SOLDER (PbF)

  • Page 8: Service Notes (Please Read)

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 5 SERVICE NOTES (PLEASE READ) 5.1. SERVICE NOTES 5.1.1. SIMPLIFIED FAULT FINDING DATA Simplified Self-Diagnostic System facilitates finding the cause of the fault. The Communication for I C bus code will be displayed on the TV screen.
  • Page 9 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 5.1.2. USAGE SCREEN MODE 5.1.4. METHOD FOR EJECTING THE DVD TRAY MANUALLY This function is displayed on the TV monitor: · the total AC plugged in AC socket (in days) 1. Insert a Screwdriver or similar object into the Eject hole.
  • Page 10 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 5.1.5. DVD SERVICE MODE defective by checking the value of JITTER and the value of LASER (current). This unit has a Self-Diagnostic function which detects a problem or malfunction within the unit and displays it on the TV screen.
  • Page 11 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 5.1.6. SERVICE POSITION 5.1.6.1.2. Service Position (2) 1. Remove the Rear Cover. Then, turn the DVD Ass´y to the right. 2. Connect the DVD Main C.B.A. using the Extension Cable 16P.
  • Page 12 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 5.1.7. 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.
  • Page 13 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 5.1.9. WIRE AND LEAD POSITION DIAGRAM Fig. 8...
  • Page 14 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 5.1.10. HOW TO RESET ALL COMBINATION TV/DVD MEMORY FUNCTIONS To reset (clear) the select language, channel auto set and set clock functions to their initial power on condition, hold down the PLAY and SKIP- buttons of operation panel on the unit together for more than 5 seconds.

  • Page 15: Disassembly/Assembly Procedures

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 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: 1. Disconnect AC plug before disassembly.
  • Page 16 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Fig. D2...
  • Page 17 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Fig. D3...
  • Page 18 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Fig. D4...
  • Page 19 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 6.1.1.1. Notes in chart 1. Removal of DVD Ass’y Fig. D5 2. Removal of Color Picture Tube Unit Place the Unit face down on a soft cloth before removing the Color Picture Tube Unit.
  • Page 20 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Fig. D6...

  • Page 21: Adjustment Procedures

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 7 ADJUSTMENT PROCEDURES 7.1. SERVICE FIXTURES AND TOOLS...

  • Page 22: Electrical Adjustment

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 7.2.3. EVR (Electronic Variable Register) 7.2. ELECTRICAL ADJUSTMENT ADJUSTMENT WITH THE REMOTE NOTE: CONTROL Following Adjustments have been preadjusted at factory and are not required. This unit has electronic technology using I C Bus concept.
  • Page 23 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Important Note: 7.2.5.3. HOW TO ENTER SERVICE MODE Make a note of the original value of the controls 1. Set the unit to TV Mode. before modifying in case the wrong control is 2.
  • Page 24 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 7.2.6. SUB CONTRAST ADJUSTMENT 7.2.7. FOCUS, SCREEN, CUT OFF, DRIVE ADJUSTMENT Purpose: To set the optimum sub contrast level. Symptom of The picture is too dark or too light. Purpose: To set the optimum Screen.
  • Page 25 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 7.2.8. SUB COLOR/SUB TINT ADJUSTMENT Purpose : To set the standard color phase. Symptom of Color phase will be shifted. Misadjustment : Test Point : TP49 (CRT C.B.A.) Adjustment : SUB COLOR (EVR),...
  • Page 26 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 6. Select SUB TINT in EVR adjustment mode and increase 7.2.9. DEFLECTION DISTORTION level B 1 clicks above the same level. CORRECTION ADJUSTMENT Purpose : To set the optimum picture. Symptom of The picture is distortion.
  • Page 27 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 7.2.10. WHITE BALANCE ADJUSTMENT Purpose: To set the standard white level for each color temperature. Symptom of White becomes bluish or reddish. Misadjustment : Test Point : TP50 (CRT C.B.A) Adjustment :...
  • Page 28 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 7.2.11. SUB BRIGHTNESS ADJUSTMENT Note: Perform this adjustment in a darkened room. Purpose : To set the optimum brightness level. Symptom of The picture is too white or too black. Misadjustment :...

  • Page 29: Test Points And Control Location

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 7.3. TEST POINTS AND CONTROL LOCATION...
  • Page 30 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K...

  • Page 31: Schematic Diagrams

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 8 SCHEMATIC DIAGRAMS 8.1. SCHEMATIC DIAGRAM AND 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 32: Main Schematic Diagrams

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 8.2. MAIN SCHEMATIC DIAGRAMS MAIN I SCHEMATIC DIAGRAM I/O CHART OF IC6001 NOTE: NOTE: NOTE: NOTE: COMPARISON CHART COMPARISON CHART NOTE: For placing a purchase order of the parts, NOTE: For placing a purchase order of the parts, OF MODELS &...
  • Page 33 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K MAIN II SCHEMATIC DIAGRAM NOTE: NOTE: COMPARISON CHART NOTE: For placing a purchase order of the parts, OF MODELS & MARKS PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.
  • Page 34 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K IC5301 LUMINANCE/CHROMINANCE PROCESS IC- DETAIL BLOCK DIAGRAM REC VIDEO SIGNAL PB VIDEO SIGNAL S P O T K I L L E R B L A C K L E V E L...
  • Page 35 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K MAIN III SCHEMATIC DIAGRAM NOTE: NOTE: COMPARISON CHART NOTE: For placing a purchase order of the parts, OF MODELS & MARKS PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.
  • Page 36 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K IC4601 TONE CONTROL IC- DETAIL BLOCK DIAGRAM CONTROL VOLUME CONTROL VOLUME CONTROL BASS CONTROL BASS CONTROL TREBLE CONTROL TREBLE CONTROL SURROUND VOLUME VOLUME CONTROL CONTROL IC4601 DETAIL BLOCK DIAGRAM PV-20DF25/PV-20DF25-K/PV-27DF25/PV-27DF25-K/PV-27DF5...
  • Page 37 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K MAIN IV SCHEMATIC DIAGRAM NOTE: NOTE: COMPARISON CHART NOTE: For placing a purchase order of the parts, OF MODELS & MARKS PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.
  • Page 38 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K MAIN V SCHEMATIC DIAGRAM NOTE: NOTE: COMPARISON CHART NOTE: For placing a purchase order of the parts, OF MODELS & MARKS PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.

  • Page 39: Deflection Schematic Diagrams

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 8.3. DEFLECTION SCHEMATIC DIAGRAMS DEFLECTION SCHEMATIC DIAGRAM NOTE: NOTE: COMPARISON CHART IMPORTANT SAFETY NOTICE: NOTE: For placing a purchase order of the parts, OF MODELS & MARKS PARTS MARKED "PT" ARE NOT USED.

  • Page 40: Operation / Crt

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 8.4. OPERATION / CRT (Models : PV-20DF25 / PV-20DF25-K) SCHEMATIC DIAGRAMS NOTE: NOTE: COMPARISON CHART IMPORTANT SAFETY NOTICE: NOTE: For placing a purchase order of the parts, OF MODELS & MARKS PARTS MARKED "PT"...

  • Page 41: 27Df25-K / Pv-27Df5)

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 8.5. CRT SCHEMATIC DIAGRAM (Models : PV-27DF25 / PV-27DF25-K / PV-27DF5) CRT SCHEMATIC DIAGRAM (C, D, E) NOTE: NOTE: NOTE: NOTE: COMPARISON CHART IMPORTANT SAFETY NOTICE: NOTE: For placing a purchase order of the parts, NOTE: For placing a purchase order of the parts, OF MODELS &...

  • Page 42: Dvd Main / Dvd Sub Schematic Diagrams

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 8.6. DVD MAIN / DVD SUB SCHEMATIC DIAGRAMS DVD MAIN I SCHEMATIC DIAGRAM NOTE: NOTE: NOTE: For placing a purchase order of the parts, PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.
  • Page 43 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K I/O CHART OF IC8002 I/O CHART OF IC8003 I/O CHART OF IC8004 Pin No. Signal Name Description Pin No. I/O Signal Name Description Pin No. Signal Name Description Memory address 16 +3.3V...
  • Page 44 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K DVD MAIN II SCHEMATIC DIAGRAM NOTE: NOTE: NOTE: For placing a purchase order of the parts, PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.
  • Page 45 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K DVD MAIN III SCHEMATIC DIAGRAM NOTE: NOTE: NOTE: For placing a purchase order of the parts, PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.
  • Page 46 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K DVD SUB SCHEMATIC DIAGRAM NOTE: NOTE: NOTE: For placing a purchase order of the parts, PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.

  • Page 47: Interconnection Schematic Diagram

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 8.7. INTERCONNECTION SCHEMATIC DIAGRAM INTERCONNECTION SCHEMATIC DIAGRAM NOTE: NOTE: COMPARISON CHART NOTE: For placing a purchase order of the parts, OF MODELS & MARKS PARTS MARKED "PT" ARE NOT USED. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.

  • Page 48: Voltage Chart

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 8.8. VOLTAGE CHART NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MAIN C.B.A. MAIN C.B.A. (VIDEO/AUDIO SECTION) (SYSTEM CONTROL SECTION) MODE STOP MODE STOP...
  • Page 49 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. COMPARISON CHART CRT C.B.A. CRT C.B.A. OF MODELS & MARKS (A,B) (C,D,E) DEFLECTION C.B.A. DVD MAIN C.B.A.
  • Page 50 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. DVD SUB C.B.A. MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE...

  • Page 51: Circuit Board Layout

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 9 CIRCUIT BOARD LAYOUT 9.1. MAIN C.B.A. NOTE: NOTE: COMPARISON CHART MAIN C.B.A. LSEP2220B(A, B) / LSEP2222A (C, D, E) CIRCUIT BOARD LAYOUT SHOWS COMPONENTS INSTALLED FOR VARIOUS MODELS. FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, OF MODELS &...

  • Page 52: Operation C.b.a

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 9.2. OPERATION C.B.A. NOTE: COMPARISON CHART OPERATION C.B.A. LSEP2221A FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, OF MODELS & MARKS REFER TO BEGINNING OF SCHEMATIC SECTION. MODEL MARK PV-20DF25 PV-20DF25-K...

  • Page 53: Deflection / Crt C.b.a

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 9.3. DEFLECTION / CRT C.B.A. NOTE: COMPARISON CHART DEFLECTION C.B.A. LSEP2218D(A, B) / LSEP2218C (C, D, E) CRT C.B.A. LRP63022F (A, B) FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, OF MODELS & MARKS REFER TO BEGINNING OF SCHEMATIC SECTION.

  • Page 54: Dvd Main / Dvd Sub C.b.a

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 9.4. DVD MAIN / DVD SUB C.B.A. DVD MAIN C.B.A. LSUQ0079 (COMPONENT SIDE) (FOIL SIDE) L8416 P8402 L8439 P8401 NOTE: L8420 FL8501 TP8522 FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, L8418 REFER TO BEGINNING OF SCHEMATIC SECTION.

  • Page 55: Block Diagrams

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 10 BLOCK DIAGRAMS POWER SUPPLY BLOCK DIAGRAM MAIN C.B.A. T850 F801 TP851 6.3A L801 L802 D804-807 D860 C867,872 125V/250V P801 TO DEFLECTION +130V RECTIFIER SMOOTHING P851 C.B.A. P502 LINE LINE FULL-WAVE...
  • Page 56 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K VIDEO SIGNAL PATH BLOCK DIAGRAM VIDEO SIGNAL MAIN C.B.A. UHF/VHF TUNER/TV IC5351 (SW) DEMODULATOR UNIT IC5651 Q5653 VIDEO BUFFER TUNER Q5651 LINE-1 BUFFER Q5657 Q5658 LINE SEPARATION LINE-2 BUFFER Q5303 BUFFER...
  • Page 57 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K AUDIO SIGNAL PATH BLOCK DIAGRAM AUDIO SIGNAL MAIN C.B.A. IC9001 UHF/VHF TUNER/TV IC4301 (INPUT SELECT) IC4351 (OP AMP) AUDIO OUT (MTS/SAP SIGNAL PROCESS) TP9001 DEMODULATOR UNIT L-CH L-CH AUDIO OUT R-CH...
  • Page 58 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K SYSTEM CONTROL BLOCK DIAGRAM MAIN C.B.A. IC6001 (SYSTEM CONTROL MICROCONTROLLER) D6002 KEY MATRIX (SW6301 - 6304,6307 - 6309,6316 - 6318) TERMINAL 0.3V 0.4V 1.1V 1.2V 1.95V 2.05V 2.85V 2.95V 3.7V 3.8V 4.5V...
  • Page 59 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K TV Y/C PROCESS BLOCK DIAGRAM (Models : PV-20DF25/PV-20DF25-K) VIDEO SIGNAL MAIN C.B.A. CRT C.B.A. V1 90 Vp-p 50 V 20 µs 3.58MHz X5601 V1 1.1 Vp-p V1 5.6 Vp-p V1 4.8 Vp-p V1 5.2 Vp-p...
  • Page 60 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K TV Y/C PROCESS BLOCK DIAGRAM (Models : PV-27DF25/PV-27DF25-K/PV-27DF5) VIDEO SIGNAL MAIN C.B.A. CRT C.B.A. V1 90 Vp-p 50 V 20 µs 3.58MHz X5601 V1 1.1 Vp-p V1 5.6 Vp-p V1 4.8 Vp-p V1 5.2 Vp-p...
  • Page 61 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K DVD I BLOCK DIAGRAM DVD MECHANISM UNIT DVD SUB C.B.A. DVD MAIN C.B.A. IC8001 (DVD SIGNAL PROCESSOR/DVD MICROCONTROLLER) SW8952 CLOSE TP8009 P8951 P8801 P8401 TRAY CLOSE DETECT(L) DVD READY(L) DVD READY(L)
  • Page 62 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K DVD II BLOCK DIAGRAM DATA(VIDEO/AUDIO) SIGNAL DVD VIDEO SIGNAL DVD AUDIO SIGNAL DVD MECHANISM UNIT DVD MAIN C.B.A. NOT USED (WITH COMPONENT OUT) IC8001 (DVD SIGNAL PROCESSOR/DVD MICROCONTROLLER) IC8401 (VIDEO AMP/DRIVER)
  • Page 63 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Troubleshooting Hints How to confirm whether DVD circuit or other circuits is defective. Communication Timing Chart 1 NOTE: DVD SERIAL START 300 ms Host communication may not occur correctly between IC6001 on the Main C.B.A. and IC8001 on the DVD Main C.B.A.
  • Page 64 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Spindle Motor Operation Problem Pickup Operation Problem Note: Check the voltage during 10 to 20 seconds as soon as disc has been inserted. Note: Check the signal at TP8809 as soon as disc has been inserted. Otherwise, following waveform can not be monitored.
  • Page 65 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K TEST POINTS LOCATION DVD Main C.B.A. IC8801 TP8523 Q8905 TP8903 Q8906 TP8906 TP8011 TP8923 TP8916 TP8812 IC8001 TP8806 TP8807 TP8813 TP8809 TP8009 TP8006 TP8010 TP8005 (Component Side) (Foil Side) DVD Sub C.B.A.
  • Page 66 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K...

  • Page 67: Exploded Views

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 11 EXPLODED VIEWS 11.1. DVD SECTION...

  • Page 68: Chassis Frame Section

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 11.2. CHASSIS FRAME SECTION (1)
  • Page 69 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 11.3. CHASSIS FRAME SECTION (2)

  • Page 70: Chassis Frame Section

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 11.4. CHASSIS FRAME SECTION (3)

  • Page 71: Packing Parts And Accessories Section

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 11.5. PACKING PARTS AND ACCESSORIES SECTION...

  • Page 72: Replacement Parts Lists

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 12 REPLACEMENT PARTS LISTS BEFORE REPLACING PARTS, READ THE FOLLOWING: 12.1.3. Electrical Replacement Notes 12.1. REPLACEMENT NOTES 1. Unless otherwise specified; All resistors are in Ω, K = 1,000 Ω, M = 1,000 kΩ.

  • Page 73: Mechanical Replacement Parts List

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 12.2. MECHANICAL REPLACEMENT Ref. Part No. Part Name & Description Remarks PARTS LIST LSPN0556 BOTTOM CUSHION REAR,STYROFOAM ( A,B ) LSPN0552 BOTTOM CUSHION REAR,STYROFOAM Definition of Parts supplier: ( C,D,E ) 1.

  • Page 74: Electrical Replacement Parts List

    PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 12.3. ELECTRICAL REPLACEMENT Ref. Part No. Part Name & Description Remarks PARTS LIST LSEP2220A MAIN C.B.A. ( C,D,E ) 3,4 RTL LSEP2221A OPERATION C.B.A. 4 RTL LSEP2218D DEFLECTION C.B.A. ( A,B )
  • Page 75 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C0JBAR000002 IC, CMOS STANDARD LOGIC E.S.D. B1ABCF000020 TRANSISTOR SI NPN CHIP IC4301 Q5612 IC4351 C0ABBB000256...
  • Page 76 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D859 B0JANK000003 DIODE SI CHIP B0AACK000004 DIODE SI D5307 D860 B0EALR000005 DIODE SI D5308 MA2C165001VT...
  • Page 77 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D9510 MAZ41200LF DIODE ZENER 12V R4372 ERJ3GEYJ104V MGF CHIP 1/16W 100K D9511 MAZ41200LF DIODE ZENER 12V...
  • Page 78 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R5616 ERJ3GEYJ102V MGF CHIP 1/16W 1K R6114 ERJ6GEYJ391V MGF CHIP 1/10W 390 R5618 ERJ3GEYJ273V MGF CHIP 1/16W 27K...
  • Page 79 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks or C861 ECKETS152ME CERAMIC 250V 1500PF C4505 F2A1H1R00035 ELECTROLYTIC 50V 1UF C864 ECKR3A102KBP CERAMIC 1KV 1000PF...
  • Page 80 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K COILS Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C5674 ECJ1VC1H390J C CHIP 50V 39PF L801 G0B452H00001 LINE FILTER 2.5A 4.5MH C5677 F1H1E104A030 C CHIP 25V 0.1UF...
  • Page 81 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks 12.3.3. DEFLECTION C.B.A. SW6307 EVQ21405R SWITCH PUSH SW6308 EVQ21405R SWITCH PUSH SW6309 EVQ21405R SWITCH PUSH SW6318 EVQ21405R SWITCH PUSH FUSE & PROTECTOR Ref.
  • Page 82 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R402 ERDS2TJ183T CARBON 1/4W 18K ( C,D,E ) R761 ERJ3GEYJ103V MGF CHIP 1/16W 10K ( C,D,E )
  • Page 83 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks C562 F2A1H2R20023 ELECTROLYTIC 2.2UF C,D,E ) C563 F1B3D681A011 CERAMIC 2KV 680PF ( C,D,E ) C575 F2A2D3300010 ELECTROLYTIC 200V 33UF C576 ECKW3D681KBP CERAMIC 2KV 680PF ( A,B )
  • Page 84 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K 12.3.6. DVD MAIN C.B.A. INTEGRATED CIRCUITS Ref. Part No. Part Name & Description Remarks IC8001 MN2DS03VP1H IC, SYSTEM LSI E.S.D. IC8002 LSSK0058 IC, 16M FLASH MEMORY E.S.D. IC8003 C3ABPG000142 IC, 64M D RAM E.S.D.
  • Page 85 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks Q8904 2SB0709A0L TRANSISTOR SI PNP CHIP R8059 ERJ1TYJ4R7U MGF CHIP 1W 4.7 B1ADCC000004 TRANSISTOR SI PNP CHIP...
  • Page 86 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C8007 F1H1C104A041 C CHIP 16V 0.1UF C8081 F1H1H102A219 C CHIP 50V 0.001UF C8008 F1H1C104A041 C CHIP 16V 0.1UF...
  • Page 87 PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K Ref. Part No. Part Name & Description Remarks L8009 J0JDC0000002 EMI FILTER CHIP L8010 J0JHC0000027 EMI FILTER CHIP L8011 J0JCC0000215 EMI FILTER CHIP L8012 J0JCC0000215 EMI FILTER CHIP L8013 J0JCC0000215 EMI FILTER CHIP...

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