Panasonic AG-520VDH Service Manual
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Panasonic AG-520VDH 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).
TV/DVD/VCR Combination
AG-520VDH
© 2005 Panasonic Shikoku Electronics Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. MKE0507602CE
D1
Unauthorized
copying
and

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  • Page 1 ORDER NO. MKE0507602CE TV/DVD/VCR Combination AG-520VDH 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 Panasonic Shikoku Electronics Co., Ltd. All rights reserved. Unauthorized copying distribution is a violation of law.

  • Page 2: Table Of Contents

    AG-520VDH CONTENTS Page Page 1 SAFETY PRECAUTIONS 8.1. SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT 1.1. GENERAL GUIDELINES NOTES 1.2. LEAKAGE CURRENT COLD CHECK 8.2. MAIN SCHEMATIC DIAGRAMS 1.3. LEAKAGE CURRENT HOT CHECK 8.3. DEFLECTION SCHEMATIC DIAGRAM 2 X-RADIATION 8.4. OPERATION / CRT SCHEMATIC DIAGRAMS 2.1.

  • Page 3: Safety Precautions

    AG-520VDH 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. There are special components used in this equipment 2.

  • Page 4: Radiation

    AG-520VDH 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

    AG-520VDH 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.) This equipment is classified as a Class I (Class 1) level LASER Product and there is no hazardous LASER radiation with the safety protection.

  • Page 6: Prevention Of Electrostatic Discharge (Esd) To

    AG-520VDH 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)

    AG-520VDH 4 ABOUT LEAD FREE SOLDER (PbF)

  • Page 8: Service Notes (Please Read)

    AG-520VDH 5 SERVICE NOTES (PLEASE READ) Note: 5.1. SERVICE NOTES Press any operation button except for POWER or PLAY 5.1.1. SELF-DIAGNOSIS INDICATION (DVD) on either the unit, or DVD key on the remote to DISPLAY detecet that a key has been pressed. The 3rd digit changes to “1”...
  • Page 9 AG-520VDH Fig. 1-6...
  • Page 10 AG-520VDH 5.1.2. USAGE SCREEN MODE 5.1.3. GROUNDING FOR ELECTROSTATIC BREAKDOWN This function is displayed on the TV monitor: · the total AC plugged in AC socket (in days) Prevention · the total elapsed "Cylinder rotation" time (in hours) 1. Human body grounding ·...
  • Page 11 AG-520VDH 5.1.5. DVD SERVICE MODE 5.1.5.2. Troubleshooting hint (standard) for this mode This unit has a Self-Diagnostic function which detects a problem or malfunction within the unit and displays on the TV It can be determine if the DVD Mechanism Unit is defective by screen.
  • Page 12 AG-520VDH 5.1.6. SERVICE POSITION 2. Connect the DVD Main C.B.A. using the Extension Cable 16P. CAUTION: 1. HOT CIRCUIT (Primary circuit) exists on the Main C.B.A. Use extreme care to prevent accidental shock when servicing. 2. Before connecting the AC plug, be sure to confirm the connection between the Connector P502 on the Fig.
  • Page 13 AG-520VDH 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. 5.1.8. SERVICE MODE In order to inhibit detection of the Supply & Takeup Photo Transistors, Reel Sensor, and Cylinder Lock can be inhibited.
  • Page 14 AG-520VDH 5.1.12. CAUTION FOR INSTALLATION OF VCR/DVD ASS’Y CAUTION: Opener Lever may be damaged when VCR/DVD Ass’y is installed, with Cassette Door-Lid and Opener Lever of Cassette Up Ass’y set incorrectly. Install the VCR/DVD Ass’y as follows: 1. Swing the Cassette Door-Lid all the way open until the Cassette Door tab clears the Opener Lever.
  • Page 15 AG-520VDH 5.1.13. F.F.C. CONNECTION NOTE 5.1.13.2. F.F.C. between the DVD Unit (DVD Main C.B.A.) and the Main 5.1.13.1. F.F.C. between the Mechanism C.B.A. and the Main C.B.A. Be careful with the direction of F.F.C. to connector as shown. Be careful with the direction of F.F.C.s to connectors as shown.
  • Page 16 AG-520VDH 5.1.14. WIRE AND LEAD POSITION DIAGRAM Fig. 12...
  • Page 17 AG-520VDH 5.1.15. HOW TO SET TRACKING TO THE 2. Select corresponding RF channels. 3. Playback a recording of P.B.S. channel including clock set NEUTRAL POSITION data and confirm this feature. Ejecting the cassette tape and then reinserting it will reset the 5.1.19.

  • Page 18: Maintenance Chart

    AG-520VDH 5.2. MAINTENANCE CHART...

  • Page 19: Disassembly/Assembly Procedures

    AG-520VDH 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. 2. Before connecting the AC plug, be sure to confirm the connection between the Connector P502 on the Deflection C.B.A.
  • Page 20 AG-520VDH Fig. D2...
  • Page 21 AG-520VDH Fig. D3...
  • Page 22 AG-520VDH Fig. D4...
  • Page 23 AG-520VDH 6.1.1.1. Notes in chart 1. Removal of VCR/DVD Ass´y Fig. D5 Installation of VCR/DVD Ass´y CAUTION: Opener Lever may be damaged when VCR/DVD Ass´y is installed, with Cassette Door-Lid and Opener Lever of Cassette Up Ass´y set incorrectly. a. When installing the VCR/DVD Ass´y, swing the Cassette Door-Lid all the way open until the Cassette Door tab clears the Opener Lever.
  • Page 24 AG-520VDH Fig. D6 2. Removal of Color Picture Tube Unit Place the Unit face down on a soft cloth before removing the Color Picture Tube Unit. 3. Removal of DVD Sub C.B.A. a. Remove solder portions "a, b, c, d, e, f, g, h, i, j" on the DVD Sub C.B.A.
  • Page 25 AG-520VDH 4. Installation of Mechanism Chassis and Cassette Up Ass’y onto Main 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.

  • Page 26: Mechanism Section

    AG-520VDH Fig. D8 b. Make sure the phase hole of the Main Cam Gear on the bottom side of the Mechanism Unit is in EJECT Position. Fig. D9 c. Install the Mechanism Chassis straight onto the Main C.B.A. so that the Sensor LED clears the hole in the Mechanism Chassis and that 2 Connectors (P6201 and P4001) are aligned and seated securely.

  • Page 27: Adjustment Procedures

    AG-520VDH 7 ADJUSTMENT PROCEDURES 7.1. SERVICE FIXTURES AND TOOLS 7.2. MECHANICAL ADJUSTMENT Refer to the Service Manual for R4-Mechanism Chassis. (Order No. MKE0401000C1)

  • Page 28: Electrical Adjustment

    AG-520VDH 7.3.3. EVR (Electronic Variable Register) 7.3. 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. · Purity Adjustment The following control functions are adjusted by using "On Screen Displays"...
  • Page 29 AG-520VDH Fig. E2-1 Fig. E2-5 7.3.5.1. How to adjust: 7.3.5.2. How to release from EVR Adjustment Mode: 1. Press UP/DOWN key on the remote control to select control function to be adjusted. Press and hold STOP/EJECT, PLAY and VOL- buttons of VCR...
  • Page 30 AG-520VDH 7.3.7. SUB CONTRAST ADJUSTMENT 7.3.8. 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. Misadjustment: Symptom of The picture is will be an improper screen Misadjustment: color mix.
  • Page 31 AG-520VDH 7.3.9. 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), SUB TINT (EVR), Specification : Refer to descriptions below.
  • Page 32 AG-520VDH 7.3.10. DEFLECTION DISTORTION CORRECTION ADJUSTMENT Purpose : To set the optimum picture. Symptom of The picture is distortion. Misadjustment : Test Point : ---------- Adjustment : V POSITION (EVR), V SIZE (EVR), H-CENTER (EVR), Specification : Refer to descriptions below.
  • Page 33 AG-520VDH 7.3.11. 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 : FOCUS CONTROL (Flyback Transformer), SCREEN CONTROL (Flyback...
  • Page 34 AG-520VDH level A is 175 VDC±5 VDC. 7.3.12. 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 : Test Point :...

  • Page 35: Test Points And Control Location

    AG-520VDH 7.4. TEST POINTS AND CONTROL LOCATION...
  • Page 36 AG-520VDH...

  • Page 37: Schematic Diagrams

    AG-520VDH 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. characteristics important for safety. When replacing any of these components, use only the specified parts.

  • Page 38: Main Schematic Diagrams

    AG-520VDH 8.2. MAIN SCHEMATIC DIAGRAMS 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 39 AG-520VDH I/O CHART OF IC6001 IC6201 CYLINDER/LOADING MOTOR DRIVE IC- DETAIL BLOCK DIAGRAM Pin No. I/O Description Signal Name Pin No. I/O Signal Name Description KEY_0 KEY DATA 0 LINE_SD_L TV SIGNAL(L) R IN F IN OUT2 L GND OUT1...
  • Page 40 AG-520VDH 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 41 AG-520VDH IC3001 VIDEO/AUDIO SIGNAL PROCESS / HEAD AMP IC- DETAIL BLOCK DIAGRAM IC4601 TONE CONTROL IC - DETAIL BLOCK DIAGRAM REC VIDEO SIGNAL PB VIDEO SIGNAL REC AUDIO SIGNAL PB AUDIO SIGNAL INVERT X-TAL CLOCK CONTROL DOWN CR DET VCO/OSC...
  • Page 42 AG-520VDH 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 43 AG-520VDH 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 D E T E C T O R...
  • Page 44 AG-520VDH MAIN IV 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 AG-520VDH IC4201 Hi-Fi AUDIO 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 HIFI SWITCH PLAY(H) OUTPUT...
  • Page 46 AG-520VDH MAIN V 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 AG-520VDH MAIN VI 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 48: Deflection Schematic Diagram

    AG-520VDH 8.3. DEFLECTION SCHEMATIC DIAGRAM DEFLECTION SCHEMATIC DIAGRAM NOTE: NOTE: IMPORTANT SAFETY NOTICE: NOTE: For placing a purchase order of the parts, PARTS MARKED "PT" ARE NOT USED. COMPONENTS IDENTIFIED BY THE SIGN HAVE FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.

  • Page 49: Operation / Crt Schematic Diagrams

    AG-520VDH 8.4. OPERATION / CRT SCHEMATIC DIAGRAMS NOTE: NOTE: IMPORTANT SAFETY NOTICE: NOTE: For placing a purchase order of the parts, PARTS MARKED "PT" ARE NOT USED. COMPONENTS IDENTIFIED BY THE SIGN HAVE FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, be sure to use the part number listed in the parts list.

  • Page 50: Dvd Main / Dvd Sub Schematic Diagrams

    AG-520VDH 8.5. 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 51 AG-520VDH 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 (Not used) Memory address 15 SDRAM data 0...
  • Page 52 AG-520VDH 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 53 AG-520VDH 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 54 AG-520VDH 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 55: Interconnection Schematic Diagram

    AG-520VDH 8.6. INTERCONNECTION SCHEMATIC DIAGRAM INTERCONNECTION 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 56: Voltage Chart

    AG-520VDH 8.7. VOLTAGE CHART NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MAIN C.B.A. (SYSTEM CONTROL/SERVO SECTION) MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY MODE PLAY...
  • Page 57 AG-520VDH NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. MAIN C.B.A. (VIDEO/AUDIO SECTION) DEFLECTION C.B.A. MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP...
  • Page 58 AG-520VDH NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. DVD MAIN CRT C.B.A. C.B.A. MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE STOP MODE...
  • Page 59 AG-520VDH 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 STOP MODE STOP MODE STOP MODE STOP MODE...
  • Page 60 AG-520VDH...

  • Page 61: Circuit Board Layout

    AG-520VDH 9 CIRCUIT BOARD LAYOUT 9.1. MAIN C.B.A. MAIN C.B.A. LSEP2217B HOT CIRCUIT. BE CAREFUL AND USE AN ISOLATION TRANSFORMER WHEN SERVICING. TP5313 D864 TP860 P6301 POWER CIRCUIT L1621 D6304 J5504 P5501 D865 C1017 TP1004 C3057 PR1002 J5503 P852 P5502...

  • Page 62: Operation C.b.a

    AG-520VDH 9.2. OPERATION C.B.A. NOTE: OPERATION C.B.A. LSEP2219A FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. NOTE: CIRCUIT BOARD LAYOUT SHOWS COMPONENTS INSTALLED FOR VARIOUS MODELS. FOR PROPER PARTS CONTENT FOR THE MODEL YOU ARE SERVICING, PLEASE REFER TO THE SCHEMATIC DIAGRAM AND PARTS LIST.

  • Page 63: Deflection / Crt C.b.a

    AG-520VDH 9.3. DEFLECTION / CRT C.B.A. NOTE: DEFLECTION C.B.A. LSEP2218B CRT C.B.A. LRP63022F FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. NOTE: CIRCUIT BOARD LAYOUT SHOWS COMPONENTS INSTALLED FOR VARIOUS MODELS. FOR PROPER PARTS CONTENT FOR THE MODEL YOU ARE SERVICING, PLEASE REFER TO THE SCHEMATIC DIAGRAM AND PARTS LIST.

  • Page 64: Dvd Main / Dvd Sub C.b.a

    AG-520VDH 9.4. DVD MAIN / DVD SUB C.B.A. LSUQ0079 DVD MAIN C.B.A. (COMPONENT SIDE) (FOIL SIDE) NOTE: FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES, REFER TO BEGINNING OF SCHEMATIC SECTION. L8416 P8402 L8439 P8401 L8420 FL8501 TP8522 L8418 R8557...

  • Page 65: Block Diagrams

    AG-520VDH 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 RECTIFIER SMOOTHING P851 +130V LINE LINE FULL-WAVE C.B.A. P502 AC CORD P801 FILTER FILTER RECTIFIER IC850 D863...
  • Page 66 AG-520VDH VIDEO SIGNAL PATH BLOCK DIAGRAM REC VIDEO SIGNAL PB VIDEO SIGNAL MAIN C.B.A. UHF/VHF TUNER/TV DEMODULATOR UNIT Q7031 1.4 Vp-p VIDEO BUFFER 1 Vp-p 0.5 Vp-p 0.5 V 5 ms (TO IC6001(9)) 20 µs 0.5 V 0.2 V 20 µs...
  • Page 67 AG-520VDH VIDEO SELECTOR BLOCK DIAGRAM REC VIDEO SIGNAL PB VIDEO SIGNAL MAIN C.B.A. DVD-Y IC5301 (SW) LUMINANCE LUMINANCE VIDEO TO/FROM TY FROM VIDEO IC5653 (SW) Y/C PROCESS SIGNAL BLOCK PATH VV CHROMINANCE DIAGRAM BLOCK DIAGRAM CHROMINANCE CHROMINANCE FSC(3.58MHz) 3.58MHz P4801...
  • Page 68 AG-520VDH AUDIO SIGNAL PATH BLOCK DIAGRAM REC AUDIO SIGNAL PB AUDIO SIGNAL MAIN C.B.A. Q4081 (FROM IC6001(16)) NORMAL AUDIO PB ON (L) V1 40 mVp-p IC3001 (AUDIO PROCESS) Q4082 AUDIO CONTROL HEAD UNIT 20 mV 0.5 ms Q4083 NORMAL AUDIO...
  • Page 69 AG-520VDH Hi-Fi AUDIO SIGNAL PATH BLOCK DIAGRAM REC AUDIO SIGNAL PB AUDIO SIGNAL MAIN C.B.A. UHF/VHF TUNER/TV FROM VIDEO SIGNAL 3.58MHz DEMODULATOR UNIT PATH BLOCK DIAGRAM (TO IC6001(10)) MTS MODE (TO IC6001(21)) AUDIO DEFEAT(H) D4210 IC4201 (TO IC6001(93)) Hi-Fi PB(H)
  • Page 70 AG-520VDH SYSTEM CONTROL BLOCK DIAGRAM MAIN C.B.A. IC6001 (SYSTEM CONTROL MICROCONTROLLER) IC6201 SW6002 (MODE SELECT SWITCH) (LOADING MOTOR DRIVE) MODE SW PIN NO. OF IC6001 POSITION A LOADING MOTOR P6203 (33) (32) (31) (30) MODE LOADING LOADING REVERSE(H) MODE SW...
  • Page 71 AG-520VDH SERVO BLOCK DIAGRAM AUDIO CONTROL HEAD UNIT MAIN C.B.A. IC6001 (SERVO MICROCONTROLLER) TP6003 P4092 P4002 CONTROL REC CTL ENVELOPE (FROM IC3001(83)) HEAD P4092 P4002 DETECTOR ENVELOPE VOLTAGE PB-ON 4 Vp-p TP6206 POSITIVE PB CTL SLICER 10 ms 2 Vp-p...
  • Page 72 AG-520VDH TV Y/C PROCESS BLOCK DIAGRAM REC VIDEO SIGNAL PB 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 3.58MHz V1 110 Vp-p V1 120 Vp-p V1 0.9 Vp-p...
  • Page 73 AG-520VDH 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) TP8010 P8951 P8801 P8401 TRAY OPEN DETECT(L) DVD RESET(L)
  • Page 74 AG-520VDH 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) TP8915 SW+5V NOT USED P8901 TP8407 TP8914 P8401...
  • Page 75 AG-520VDH 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 76 AG-520VDH 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 77 AG-520VDH 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. TP8958 Test Point Information Test Point with a Test Pin.
  • Page 78 AG-520VDH...

  • Page 79: Exploded Views

    AG-520VDH 11 EXPLODED VIEWS 11.1. MECHANISM SECTION...

  • Page 80: Dvd Section

    AG-520VDH 11.2. DVD SECTION...

  • Page 81: Chassis Frame Section

    AG-520VDH 11.3. CHASSIS FRAME SECTION (1)
  • Page 82 AG-520VDH 11.4. CHASSIS FRAME SECTION (2)

  • Page 83: Chassis Frame Section

    AG-520VDH 11.5. CHASSIS FRAME SECTION (3)

  • Page 84: Packing Parts And Accesories Section

    AG-520VDH 11.6. PACKING PARTS AND ACCESORIES SECTION...

  • Page 85: Replacement Parts Lists

    DEMODULATOR UNIT replacement part is available as a c. Parts with mark "SPC" in the Remarks column are complete assembly unit only. supplied from Spare Parts Center of Panasonic AVC Company. 5. EEP ROM IC (IC6004) replacement note: d. Parts without mark in the Remarks column are supplied There are 2 types of EEPROM IC (IC6004) used on the from PASC-NPC.

  • Page 86: Mechanical Replacement Parts List

    2-3 BUTTON 3. Parts with mark "SPC" in the Remarks column are TBM4G3013 BADGE,ABS RESIN LSXA0674 TOP SHIELD PLATE ASS´Y supplied from Spare Parts Center of Panasonic AVC LSXY0821 SPEAKER UNIT Company. LSJA0568 AC CORD W/PLUG,120V 4. Parts without mark in the Remarks column are supplied <R>...

  • Page 87: Electrical Replacement Parts List

    AG-520VDH 12.3. ELECTRICAL REPLACEMENT Ref. Part No. Part Name & Description Remarks PARTS LIST XTV26+5FFJ TAPPING SCREW,STEEL VHD1117 SCREW,STEEL XTV26+8FFJ TAPPING SCREW,STEEL Definition of Parts supplier: VHD1044 SCREW,STEEL 1. Parts with mark "PSECI" in the Remarks column are XYN3+C4FJ SCREW W/WASHER,STEEL supplied from PSECI.
  • Page 88 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks B1GBCFNN0004 TRANSISTOR SI NPN CHIP B1ADCF000077 TRANSISTOR SI PNP CHIP Q3001 Q6001 Q3002 2SD0601A0L TRANSISTOR SI NPN CHIP Q6002 2SD0601A0L TRANSISTOR SI NPN CHIP...
  • Page 89 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D1002 B0HAMM000083 DIODE SI D4717 MA2C165001VT DIODE SI D1003 MAZ40470MF DIODE ZENER 4.7V B0AACK000004 DIODE SI D4717 B0BA4R600003 DIODE ZENER 4.7V D1003 D4718...
  • Page 90 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R801 D0AF825KA002 SOLID 1/2W 8.2M R4071 ERJ3GEYJ153V MGF CHIP 1/16W 15K R802 ERJ3GEYJ472V MGF CHIP 1/16W 4.7K R4081 ERJ3GEYJ822V MGF CHIP 1/16W 8.2K...
  • Page 91 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R5329 ERJ3GEYJ222V MGF CHIP 1/16W 2.2K R6042 ERJ3GEYJ102V MGF CHIP 1/16W 1K R5353 ERJ3GEYJ101V MGF CHIP 1/16W 100 R6043 ERJ3GEY0R00V MGF CHIP 1/16W 0...
  • Page 92 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R6213 ERJ3GEYJ101V MGF CHIP 1/16W 100 C1006 ECJ1VB1H471K C CHIP 50V 470PF R6214 ERJ3GEYJ473V MGF CHIP 1/16W 47K C1007 F1B3D681A011 CERAMIC 2KV 680PF...
  • Page 93 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C3036 F2A1H2R20019 ELECTROLYTIC 50V 2.2UF C4507 F2A1E4710047 ELECTROLYTIC 25V 470UF C3037 F1H1H472A219 C CHIP 50V 4700PF C4508 F2A1E4710047 ELECTROLYTIC 25V 470UF C3038 ECJ1VB1E333K C CHIP 25V 0.033UF...
  • Page 94 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C5660 F1H1H103A220 C CHIP 50V 0.01UF C6219 F1H1C104A041 C CHIP 16V 0.1UF C5661 F1H1H104A731 C CHIP 50V 0.01UF C6220 F1H1C104A041 C CHIP 16V 0.1UF...
  • Page 95 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L5654 G0C270JA0019 COIL 27UH K6B1AGA00037 RELAY <R> RL591 L5655 G0C101J00001 COIL 100UH K6B1AGA00042 RELAY <R> L5658 G0C101JA0019 COIL 100UH RL591 L5659 G0C101J00001 COIL 100UH...
  • Page 96 AG-520VDH 12.3.3. DEFLECTION C.B.A. Ref. Part No. Part Name & Description Remarks R558 ERDS2TJ333T CARBON 1/4W 33K INTEGRATED CIRCUITS R561 ERQ1CJP2R7S FUSE 1W 2.7 Ref. Part No. Part Name & Description Remarks R562 ERF5ZK3R9 W FLMPRF 5W 3.9 IC451 C1AA00000709 IC, LINEAR <R>...
  • Page 97 AG-520VDH DIODES Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks B1ADCF000075 TRANSISTOR SI PNP CHIP PSECI D351 MAZ41500MF DIODE ZENER 15V Q8401 or D351 B0BA01400041 DIODE ZENER 15V Q8402 2SB1218A0L TRANSISTOR SI PNP CHIP...
  • Page 98 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks B0ACCK000005 DIODE SI CHIP PSECI R8424 ERA3YHD750V MGF CHIP 1/16W 75 PSECI D8001 R8425 ERJ3GEYJ680V MGF CHIP 1/16W 68 PSECI MA2J11100L DIODE SI CHIP...
  • Page 99 AG-520VDH Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C8029 F1H0J1050012 C CHIP 6.3V 1UF PSECI C8424 F1H0J1050012 C CHIP 6.3V 1UF PSECI C8030 ECJ2FB0J106K C CHIP 6.3V 10UF PSECI C8425 F2A0J1010041 ELECTROLYTIC 6.3V 100UF...
  • Page 100 AG-520VDH Ref. Part No. Part Name & Description Remarks L8412 J0JHC0000068 EMI FILTER CHIP PSECI L8413 J0JHC0000078 EMI FILTER CHIP PSECI L8414 J0JHC0000054 EMI FILTER CHIP PSECI L8415 J0JHC0000068 EMI FILTER CHIP PSECI L8416 J0JBC0000010 BEAD INDUCTOR CHIP PSECI L8418...

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