Panasonic PV-20DF25-K Service Manual Download

Page: 52 / 87

9.2. OPERATION C.B.A.

COMPARISON CHART
OF MODELS & MARKS

PV-20DF25

PV-20DF25-K

PV-27DF25

PV-27DF25-K

PV-27DF5

MODEL

MARK

PV-20DF25/PV-20DF25-K/PV-27DF25/PV-27DF25-K/PV-27DF5

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.

NOTE:

CIRCUIT BOARD LAYOUT INCLUDES COMPONENTS WHICH ARE NOT USED.

OPERATION C.B.A. LSEP2221A

SW6316

SW6317

SW6304

D6304

STOP

PLAY

OPEN/
CLOSE

ON TIMER

R6320

P6302

U6301

C6301

C6303

C6302

INFRARED
RECEIVER

LSJB2221

NOTE:

FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES,
REFER TO BEGINNING OF SCHEMATIC SECTION.

PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25- K

Summary of Contents for PV-20DF25-K

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

Page 2: ... 1 SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES 31 8 2 MAIN SCHEMATIC DIAGRAMS 32 8 3 DEFLECTION SCHEMATIC DIAGRAMS 39 8 4 OPERATION CRT Models PV 20DF25 PV 20DF25 K SCHEMATIC DIAGRAMS 40 8 5 CRT SCHEMATIC DIAGRAM Models PV 27DF25 PV 27DF25 K PV 27DF5 41 8 6 DVD MAIN DVD SUB SCHEMATIC DIAGRAMS 42 8 7 INTERCONNECTION SCHEMATIC DIAGRAM 47 8 8 VOLTAGE CHART 48 9 CIRCUIT BOARD LAYOUT 51 9 1 MAIN C...

Page 3: ...e TV set without the rear cover involves the danger of a shock hazard from the TV set power supply Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions necessary when working on high voltage equipment Always discharge the anode of the picture tube to the CRT ground of receiver before handling the tube 8 After servicing make the following leakage current c...

Page 4: ... does not occur it means that X ray protect circuit is not operating Further confirmation and repair is required 2 2 REPAIR PROCEDURES OF HORIZONTAL OSCILLATOR DISABLE CIRCUIT 1 Connect a DC voltmeter between capacitor C513 on the Main circuit board and chassis ground 2 If approximately 21 5 V For model with 20 inch CRT 20 0 V For model with 27 inch CRT is not present at that point when 120 V AC i...

Page 5: ...ther openings to look into the interior unit LASER Specification Class I level A LASER Product Class 1 level A LASER Product Wave Length 640 677 nm at DVD 770 810 nm at CD Laser Power No hazardous radiation is emitted with the safety protection 2 5 PRECAUTION OF LASER DIODE CAUTION This unit utilizes a class III a laser Visible laser radiation is emitted from the optical pickup lens when the unit ...

Page 6: ...tected can generate electrical charge sufficient to damage ES devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads electrically shorted together by conductive foam...

Page 7: ...4 ABOUT LEAD FREE SOLDER PbF 7 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 8: ...on is pressed back on 1 With power turned off press PLAY and SKIP buttons on the unit together for over 3 seconds Fig 1 1 2 TV power comes on and the unit goes into service mode The Communication for I2 C bus code will be displayed Fig 1 2 Fig 1 3 Note Press any operation button except for POWER or PLAY buttons on either the unit or DVD key on the remote to detect that a key has been pressed The 3...

Page 9: ... this mode The unit will return to normal operation mode 5 1 3 GROUNDING FOR ELECTROSTATIC BREAKDOWN Prevention 1 Human body grounding Use the antistatic wrist strap to discharge the static electricity from your body 2 Work table grounding Put a conductive material sheet or steel sheet on the area where the optical pickup is placed and ground the sheet Caution The static electricity of your clothe...

Page 10: ...ain to enter DVD Service Mode II Fig 5 3 Note a After replacing the DVD Unit press the CLEAR key on the remote in this mode The total elapsed Disc Motor on time in hours minutes will be cleared to 0 b If 01 or 02 is always displayed in 9 DM STATUS replace the DVD Unit because the Disc Motor is defective 5 To confirm the value of JITTER and the value of LASER current insert the DVD Test Disc into t...

Page 11: ... DVD models To obtain these Service Positions the 2 Extension Cables 13P LSUA0047 and 16P LSUA0048 are necessary 5 1 6 1 1 Service Position 1 1 Remove the Rear Cover Then pull the DVD Ass y out and place it upright Fig 6 1 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 Fig 6 2 5 1 6 1 3 Service Po...

Page 12: ... and in the Service Manual Use extreme care to prevent accidental shock when servicing 5 1 8 F F C CONNECTION NOTE 5 1 8 1 F F C between the DVD Unit DVD Main C B A and the Main C B A Be careful with the direction of F F C to connector as shown Fig 7 12 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 13: ...5 1 9 WIRE AND LEAD POSITION DIAGRAM Fig 8 13 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 14: ...ot isolated from the AC power line Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks It will also protect Combination TV DVD from being damaged by accidental shorting that may occur during servicing Also when troubleshooting the above type of Power Supply Circuit a variable isolation transformer is required...

Page 15: ...w 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 and P851 P852 on the Main C B A Otherwise some electrical parts may be damaged due to a sudden power surge Fig D1 15 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 16: ...Fig D2 16 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 17: ...Fig D3 17 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 18: ...Fig D4 18 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 19: ...ation of DVD Main C B A and DVD Sub C B A a Confirm that the Lever A is positioned as shown and install the DVD Sub C B A with the Locking Tab and 2 bosses b Install the DVD Main C B A with the Locking Tab and the rib c Pass the leads through the slots A and B d Solder portions a b c d e f g h i j k on the C B A Note Solder portions h and i while pushing down the DVD Sub C B A securely e Connect t...

Page 20: ...Fig D6 20 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 21: ...7 ADJUSTMENT PROCEDURES 7 1 SERVICE FIXTURES AND TOOLS 21 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 22: ...ctronic technology using I2 C Bus concept The following control functions are adjusted by using On Screen Displays and the remote control instead of adjusting mechanical controls VR 7 2 4 EVR ADJUSTMENT ITEM The following Items need to be adjusted for EVR adjustment SUB CONTRAST ADJUSTMENT FOCUS SCREEN CUT OFF DRIVE ADJUSTMENT SUB COLOR SUB TINT ADJUSTMENT DEFLECTION DISTORTION CORRECTION ADJUSTME...

Page 23: ...ntrol function for the next adjustment if necessary Fig E2 5 7 2 5 2 How to release from EVR Adjustment Mode Press and hold STOP SKIP and VOL buttons on the unit together over 5 seconds again or press the POWER button OFF to release EVR adjustment mode The adjusted value will be written to Memory IC IC6004 7 2 5 3 HOW TO ENTER SERVICE MODE 1 Set the unit to TV Mode 2 Enter EVR adjustment mode 3 Pr...

Page 24: ...t The picture is will be an improper screen color mix Test Point TP50 CRT C B A Adjustment FOCUS CONTROL Flyback Transformer SCREEN CONTROL Flyback Transformer SUB BRIGHT EVR G DRIVE EVR B DRIVE EVR R CUT OFF EVR G CUT OFF EVR B CUT OFF EVR Specification Refer to descriptions below Input Video Input Jack Crosshatch Pattern Signal Monoscope Pattern Signal Mode STOP Equipment Oscilloscope NTSC Video...

Page 25: ... on the remote control for collapse scan select the desired control function and move the shaded area to the value 7 2 8 SUB COLOR SUB TINT ADJUSTMENT Purpose To set the standard color phase Symptom of Misadjustment Color phase will be shifted Test Point TP49 CRT C B A Adjustment SUB COLOR EVR SUB TINT EVR Specification Refer to descriptions below Input Video Input Jack Rainbow Color Bar Mode STOP...

Page 26: ...ions below Input Video Input Jack Crosshatch Pattern Signal Monoscope Pattern Signal Mode STOP Equipment NTSC Video Pattern Generator 1 Supply a Crosshatch Pattern Signal to the Video Input Jack 2 Confirm that the Horizontal Center Line is within the limits of A Fig E6 1 3 For model with 27 inch CRT Adjust R763 so that vertical lines should be almost straight 4 For model with 27 inch CRT Adjust R7...

Page 27: ...k Transformer SUB BRIGHT EVR G DRIVE EVR B DRIVE EVR R CUT OFF EVR G CUT OFF EVR B CUT OFF EVR Specification Refer to descriptions below Input Video Input Jack Monoscope Pattern Signal White Pattern Signal Mode STOP Equipment NTSC Video Pattern Generator White Pattern Generator Oscilloscope 1 Supply a Monoscope Pattern Signal to the Video Input Jack 2 Connect the Oscilloscope to TP50 on the CRT C ...

Page 28: ... tracking the White Pattern properly If NG repeat the above steps 8 9 and 12 until the screen is properly tracking the White Pattern 14 Select SUB BRIGHT in EVR adjustment mode and adjust correctly Note Before pressing DISPLAY key on the remote control for collapse scan select the desired control function and move the shaded area to the value 7 2 11 SUB BRIGHTNESS ADJUSTMENT Note Perform this adju...

Page 29: ...7 3 TEST POINTS AND CONTROL LOCATION 29 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 30: ...30 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K ...

Page 31: ...to find the connection between associated connectors Example The connections between C B A s are shown below POWER SUPPLY C B A MAIN C B A The Number of pins of the Connector Connector No on Main C B A P1503 P3004 10 Pins Ref No of the connection parts such as lead cable flexible cable which is supplied as a replacement parts 244 3 Parts marked PT are not used in any models included in this servic...

Page 32: ...SW6302 WA7 5 TP6009 1K R6039 J6401 WA5 IIC_CLK 82P C6408 R6129 22K 4700 R6514 22K R6112 2SB0709A0L Q6005 HOST_DATA 0 1 C6010 H_RDY PT C6009 2200 R6062 EVQ21405R SW6308 IC6001 C2CBHG000160 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 81 82 83 84...

Page 33: ...TE_2_L MAZ40510MF D5310 MAZ40510MF D5309 PT D4704 PT D4706 PT D4703 PT D4705 JA PT 1K R4703 1K R4701 100P JC C4710 100P JC C4709 TP5019 WA7 5 TP5009 WA7 5 P5302 4 B_OUT 3 G_OUT 2 R_OUT 1 SW 12V Q5301 2SB1218AHL TNR_H C5619 PT C5934 10 16V H_RDY P4801 1 AV_GND 2 MIXR 3 AV_GND 4 MIXL 5 AV_GND 6 S COUT 7 AV_GND 8 S YOUT 9 SW 12V 10 RESET 11 A_GND 12 D_RDY 13 HOST_DATA 14 DVD_DATA 15 DVD_SCK 16 H_RDY ...

Page 34: ...US DAC PEDESTAL CLAMP 3 58MHz CHROMA TRAP DELAY SHARPNESS CONTROL CONTRAST CONTROL BRIGHTNESS CONTROL APL DETECTOR SERVICE SW COLOR DEMODULATOR BLACK LEVEL DETECTOR ACC ACC DETECTOR HPF COLOR CONTROL TINT CONTROL APC COLOR KILLER DETECTOR VCO 9 6V VCC 1 BGP VCC 6 1V GND GND V SYNC SEPARATION V OUT V COUNT DOWN H SYNC SEPARATION H LOCK DETECTOR AFC 2 HOLD DOWN DETECTOR H COUNT DOWN H VCO H OUT BLAN...

Page 35: ...0 R4601 J9503 WA5 C9002 10 16V C4351 100 16V D7002 PT D7003 PT C4503 1200P KB PT C4625 PT R7022 D9503 MA2C165001VT R4609 1M PT R9504 C9510 PT 5600 R4605 WA10 J4371 MAZ41200LF D9509 C4510 470 25V R4310 10K C9011 4R7 50V R4301 100K 2R2 50V C9022 D7004 PT D4353 MA2C165001VT 0 01 KB C9019 R7003 100 PT C4606 R4314 100K 100 16V C4302 R4358 220 C9014 0 033 KB Q4302 PT J9504 WA5 C4305 10 16V PT C9502 C450...

Page 36: ...M 1 2 3 4 5 6 7 8 9 10 11 12 16 15 14 13 17 18 19 20 21 22 23 24 VCC GND BASS CONTROL BASS CONTROL I2C CONTROL TREBLE CONTROL TREBLE CONTROL VOLUME CONTROL VOLUME CONTROL VOLUME CONTROL VOLUME CONTROL SURROUND AGC IC4601 DETAIL BLOCK DIAGRAM PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K 36 ...

Page 37: ...5 B0HAMM000105 C1005 82 200V 180K R850 IC1003 C0DAEMB00004 2 3 1 D862 PT DEGAUSS_H C1031 2200 6 3V PR850 D4FA7R00A002 C1030 330 25V 8 2M 1 2W R801 CNC1S101R1KT IC1002 2 1 4 3 L1009 0 IC1006 C0DBZGG00010 2 1 3 5 4 C1006 470P C1002 PT D1013 B0JAME000079 D1003 MAZ40470MF R802 4700 D864 B0HAMM000105 D591 D4DDD3R00002 4700P C806 AUDIO_POWER L802 G0B452H00001 2 1 3 4 R1009 1K 47 50V HG C855 R1003 15 C10...

Page 38: ... V SCHEMATIC DIAGRAM C1208 PT IC1201 C0DBZJG00006 2 1 3 5 4 100 6 3V C1212 C1206 PT UNSW 16V C1201 PT SW 30V SW 12V 22 16V C1210 PT C1202 L1201 WA5 UNSW 30V C1209 PT SW 5V_VIDEO C1203 10 50V HG C1214 47 50V HG C1216 PT 100K R1212 UNSW 5V_SYSCON 330 R1205 B1BADC000001 Q1206 C1204 47 50V HG PT C1211 PT C1207 C1205 PT POWER_ON_H R1208 PT D1201 WA7 5 D1202 B0AAML000001 D1203 B0AAML000001 R1220 56 1W R...

Page 39: ...P751 PT 150K R796 150K R797 R774 1K R779 120K C794 47 35V 82K R758 C765 0 33 50V IC752 C0ABAA000005 1 2 3 4 5 6 7 8 Q753 2SA1309AHA TP752 PT 470K R760 R753 10KB 2200 R768 R757 7500 0 1 KB C793 C767 0 22 KB C762 10 16V R775 PT R791 8200 R714 2700 180 R752 12K R762 R773 82K R756 1500 R713 470 12K R767 1500 R794 R792 8200 U751 LXPUS02X62 C768 3900P 39K R795 R799 4700 R776 4700 1800 R765 5 1K R771 330...

Page 40: ... C356 C358 C359 C360 G1 HEATER 7 HEATER GND 5 KG GND 2 KR IC G1 E 4 KB 1 G2 6 KG 3 G2 KB 1 KR 8 9 VIDEO SIGNAL 1 2 3 4 5 NC SW 12V GREEN BLUE RED 1 GND 3 4 1 2 GND HEATER NC 220V P352 P356 P351 TO MAIN C B A P5302 TO DEFLECTION C B A P504 SCREEN 1 P357 TO DEFLECTION C B A T551 P354 P353 BLUE AMP AMP GREEN AMP RED TP47 TP49 TP50 FOCUS ANODE PT 2W 2W 2W 22 16V MAZ41500MF PT 2KV PT TO DEFLECTION C B ...

Page 41: ...79 4700 Q5054 2SB1030A C5051 0 01 Q5061 2SC3311A R5074 33K R5059 100 C5062 0 01 R5065 56K R5072 39 R5076 100 R5056 51 R5068 470 Q5053 P351 1 VM 2 NC 3 SW 12V 4 R OUT 5 G OUT 6 B OUT Q5051 2SC3311A R5058 390 C5063 150P U5052 LXPUS02F259 R5061 330 Q5057 2SA1309A R5082 470 C5058 47 160V R5064 470 C5069 0 01 C5059 0 01 500V R5062 33 C5053 0 01 R5066 470 R5075 100 C5064 100 16V R5054 430 R5052 22K C506...

Page 42: ...8037 22K PT C8088 TP8012 PT PT C8089 J0JHC0000027 L8010 4R7 R8059 C0DBEZG00017 IC8005 VO 1 ADJ 2 VB 3 VC 4 GND 5 GND 6 VIN 7 VIN 8 R8061 2K 10K R8060 PT C8087 R8062 PT R8063 PT R8064 PT C8068 1 C8009 1 C8025 1 C8061 1 C8034 10 C8060 1 C8029 1 C8067 1 C8017 1 C8062 1 C8020 1 C8010 1 C8027 1 C8053 1 C8024 1 C8019 0 1 C8011 1 C8032 1 C8043 10 C8012 1 C8036 1 C8064 1 C8013 1 C8041 1 C8063 1 C8014 1 C8...

Page 43: ...e low Pin No I O 1 Signal Name Description 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 VDD DQ0 VDDQ DQ1 DQ2 VSSQ DQ3 DQ4 VDDQ DQ6 VSSQ DQ7 VDD LDQM WE CAS RAS SDRAM data 5 CS I O I SDRAM chip select low DQ5 3 3V I SDRAM data 0 I O 3 3V I SDRAM data 1 I O SDRAM data 2 I O Ground SDRAM data 3 I...

Page 44: ...C8440 1 0 1 C8443 0 01 C8434 C8435 1 C8439 1 C8436 1 L8504 PT L8438 J0JHC0000054 L8439 J0JHC0000054 R8573 0 C8520 33 10V C8512 10 16V 10 16V C8568 C8513 10 16V C8505 10 16V C8521 100 16V C8523 33 10V C8508 10 16V 10 16V C8569 100 6 3V C8425 100 6 3V C8412 C8401 100 6 3V C8507 10 16V 220 6 3V C8430 330 6 3V C8403 22 6 3V C8441 C8455 22 6 3V 100 6 3V C8452 100 6 3V C8448 100 6 3V C8453 22 6 3V C8449...

Page 45: ...8820 PT 1 C8813 C8920 1 C8917 10 TP8821 PT DRIVER_MUTE1 TP8822 PT DRIVER_MUTE2 0 1 C8809 PT TP8823 PT TP8903 PT C8923 R8911 27 R8910 27 P8901 25 ACT T 24 ACT T 23 ACT F 22 ACT F 21 DVD HF 18 GND 17 LD_DVD 16 VR_CD 15 LD_CD 14 PD_CD 13 RF 12 RF 11 E2 F2 10 B 9 A 8 E1 F1 7 E4 F4 6 E3 F3 5 D 4 C 3 Vs 2 Vcc 1 GND 19 PD_DVD 20 VR_DVD C8909 47 6 3V C8908 47 6 3V 33 10V C8808 C8902 PT P8801 1 TRVM 2 TRVM...

Page 46: ... TP8951 PT P8952 3 A_ 3 3V 2 FG 1 A_GND P8953 2 SPM 1 SPM P8954 2 TRVM 1 TRVM P8955 2 LDM 1 LDM TP8952 PT TP8953 PT TP8954 PT TP8955 PT TP8956 PT TP8957 PT TP8958 PT TP8959 PT TP8960 PT TP8961 PT P8951 11 FG 10 A_ 3 3V 9 OPEN_L 8 A_GND 7 CLOSE_L 6 SPM 5 SPM 4 LDM 3 LDM 2 TRVM 1 TRVM CLOSE OPEN TO DVD MECHANISM UNIT TO DVD MAIN C B A P8801 TO DVD MECHANISM UNIT TO DVD MECHANISM UNIT TO DVD MECHANIS...

Page 47: ...P6301 P6302 7 Pins P6302 P504 P352 4 Pins P352 VIDEO IN 2 AUDIO IN 2 L CH AUDIO IN 2 R CH EARPHONE JACK AUDIO IN 1 L CH AUDIO IN 1 R CH AUDIO OUT L CH AUDIO OUT R CH VIDEO IN 1 348 DIGITAL AUDIO OUT P5501 13 Pins P501 DEFLECTION C B A A B P503 P352 6 Pins P352 C D E P851 P851 P852 P502 2 Pins DVD MECHANISM UNIT DVD MAIN C B A 16 Pins 11 Pins P4801 P8401 P8402 309 323 25 Pins P8901 PIN DVD SUB C B ...

Page 48: ...B 0 8 Q1201 1 0 2 4 6 3 28 3 4 28 3 5 0 6 0 Q1206 E 5 1 C 5 2 B 5 9 Q4303 E 0 C B Q4304 E 0 C B Q4351 E 5 9 C 12 0 B 6 5 Q4352 E 0 4 C 0 B 3 8 Q4353 E 0 5 C 0 B 3 8 Q4355 E 0 C 3 8 B 0 Q4356 E 0 C 5 2 B 2 5 Q5301 E 3 2 C 9 1 B 3 8 Q5302 E 5 2 C 9 1 B 5 7 Q5303 E 3 0 C 9 0 B 3 7 Q5353 E 4 6 C 9 0 B 9 0 Q5354 E 0 C 9 0 B 0 Q5355 E 0 C 0 MAIN C B A SYSTEM CONTROL SECTION IC6001 1 5 2 2 5 2 3 5 2 4 5 ...

Page 49: ...50 51 52 2 0 53 0 54 3 3 55 56 3 4 57 3 4 58 3 3 59 3 3 60 3 4 61 62 3 3 63 0 64 0 65 66 3 4 67 3 4 68 69 3 4 70 71 0 1 72 1 2 73 3 4 74 0 75 1 7 76 2 4 77 78 0 1 79 80 3 4 81 3 3 82 3 1 83 84 3 3 85 86 87 0 88 89 1 2 90 3 4 91 3 4 92 3 4 93 0 94 95 96 97 98 3 3 99 0 9 100 0 101 2 4 102 2 2 103 1 9 104 0 3 105 0 106 1 4 107 3 3 108 2 1 109 110 1 9 111 1 9 112 1 7 113 1 7 114 1 7 115 1 7 116 1 7 11...

Page 50: ...905 E 0 C 3 9 B 0 3 Q8906 E 5 0 C 5 1 B 0 1 TP8001 0 TP8003 2 2 TP8005 4 4 TP8006 3 4 TP8007 3 4 TP8008 4 8 TP8009 2 9 TP8010 3 5 TP8011 3 3 TP8012 1 3 TP8013 3 3 TP8014 0 TP8015 3 3 TP8016 0 TP8018 1 7 TP8019 1 8 TP8020 1 7 TP8021 0 TP8022 1 6 TP8023 1 4 TP8024 2 0 TP8025 1 7 TP8027 1 6 TP8028 1 6 TP8029 1 5 TP8030 1 5 TP8031 1 7 TP8032 0 1 TP8033 0 1 TP8034 0 1 TP8035 0 TP8036 TP8037 3 4 TP8038 ...

Page 51: ...5681 C5670 R5673 C5673 R5679 R5676 L5654 C5677 C5653 C5674 L5652 R5664 R5661 R5677 R5656 R5655 C5665 C5660 C5668 C5662 C5659 C5658 R5660 R5665 R5356 R5658 L5658 TP5651 TP5652 IC5351 Q5653 Q5658 Q5357 Q5359 Q5651 16 1 1 1 4 2 1 1 2 8 9 IC5651 Q5652 P4501 P5302 P4502 P6001 1 3 C5661 W5629 W5628 L5655 5 D5311 C9004 TP9554 D6008 D6007 C9008 C9003 L9001 L9509 C9002 C9007 C9005 C9009 C9012 R9002 R9003 C...

Page 52: ...R THE MODEL YOU ARE SERVICING PLEASE REFER TO THE SCHEMATIC DIAGRAM AND PARTS LIST NOTE CIRCUIT BOARD LAYOUT INCLUDES COMPONENTS WHICH ARE NOT USED OPERATION C B A LSEP2221A OPERATION C B A LSEP2221A SW6316 SW6317 SW6304 D6304 STOP 1 7 PLAY OPEN CLOSE ON TIMER R6320 P6302 1 3 U6301 C6301 C6303 C6302 INFRARED RECEIVER LSJB2221 NOTE FOR SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT NOTES REFER TO BEGIN...

Page 53: ...RT C B A LSEP2079D DEFLECTION C B A LSEP2218D A B LSEP2218C C D E R752 R757 R758 R760 R759 R796 R774 R779 C764 R771 R772 R775 R794 R761 C794 C795 C768 C792 C793 C761 C767 R797 R793 R795 R776 R714 R768 R798 R755 C765 R756 R799 R713 D704 R773 C762 R501 R515 R512 R572 1 2 12 13 R574 R573 R519 R435 C571 L501 C521 L451 R422 R468 R436 C402 C408 R410 R414 R415 R402 R401 R413 R416 C458 R466 R406 R409 R411...

Page 54: ...801 TP8821 TP8822 TP8802 TP8804 TP8801 TP8823 R8805 R8804 C8809 IC8401 IC8001 32 17 1 28 15 14 1 16 192 193 129 128 1 256 64 65 FL8502 DVD LUMINANCE LEVEL L8416 L8414 TP8416 C8402 C8404 R8518 R8533 R8534 C8544 R8573 R8557 R8549 C8553 C8552 L8420 L8418 L8419 L8422 L8421 L8434 L8431 L8424 L8504 L8433 L8435 L8436 L8437 R8802 R8801 C8803 C8813 C8807 C8806 C8805 C8804 C8810 C8811 Q8503 Q8502 C C E E B ...

Page 55: ...C1027 SW 5V RECTIFIER SMOOTHING D1013 C1025 1030 RECTIFIER SMOOTHING D1011 C1024 1029 UNSW 5V SW 12V RECTIFIER SMOOTHING D1010 C1020 1028 14 RECTIFIER SMOOTHING D1015 C1026 1031 3 15 1 3 2 SHUNT REG LINE FILTER FULL WAVE RECTIFIER FROM IC6001 81 POWER ON H SWITCHING CONTROL IC1001 4 6 1 7 D861 OVER VOLTAGE PROTECTOR D864 D865 D866 PR850 FROM IC6001 48 DVD POWER ON H Q1201 TO DVD MAIN C B A P8402 1...

Page 56: ...ER H LINE L FROM IC6001 26 LINE2 H LINE1 L DVD LUMINANCE FROM DVD II BLOCK DIAGRAM DVD CHROMINANCE P4801 8 P4801 6 TUNER LINE I2C CONTROL DVD IC5301 SW 48 46 3 43 44 LINE 1 LINE TUNER LINE 2 IC5351 SW 1 3 7 2 4 5 Q5612 BUFFER Q5301 Q5355 BUFFER Q5353 Q5354 DC CLAMP BUFFER Q5303 BUFFER LUMINANCE TO TV Y C PRPCESS BLOCK DIAGRAM CHROMINANCE 3 58MHz Q5651 Q5652 BUFFER 4 10 IC5651 Y C Y C SEPARATION Q5...

Page 57: ...NTROL EARPHONE JACK P4501 1 P4502 1 IC4501 AUDIO AMP IC4601 TONE CONTROL AUDIO L CH CONTROL AUDIO R CH CONTROL 19 20 14 15 11 12 FROM IC6001 72 I2C SERIAL DATA FROM IC6001 71 I2C SERIAL CLOCK P4801 2 P4801 4 DVD AUDIO L CH FROM DVD II BLOCK DIAGRAM DVD AUDIO R CH P4502 2 P4501 2 FROM IC6001 28 AUDIO MUTE H FROM IC6001 12 V CHIP MUTE H D4353 D4354 2 4 8 12 AUDIO IN 2 L CH AUDIO IN 2 R CH IC4701 OP ...

Page 58: ...01 FM SIGNAL PROCESS UHF VHF TUNER TV DEMODULATOR UNIT ON TIMER LED ON L D6304 ON TIMER I2 C SERIAL DATA I2 C SERIAL CLOCK 5V IC6001 SYSTEM CONTROL MICROCONTROLLER 38 39 1 2 3 72 71 17 14 MAIN C B A OPERATION C B A DVD READY L 36 SERIAL DATA 1 66 SERIAL CLOCK 67 HOST READY L 27 DVD RESET L 68 SERIAL DATA 0 65 11 10 TO IC4601 15 I2 C SERIAL DATA TO IC4601 14 I2 C SERIAL CLOCK P4801 16 P4801 10 SERI...

Page 59: ...VE 3 58MHz 33 P501 2 P5501 12 P501 8 P5501 6 P501 6 P5501 8 P5501 5 D503 C513 DC CONVERT BUFFER VCO 31 25 FROM IC6001 29 V MUTE H Q5302 BUFFER 5 6 44 43 40 10 19 16 18 11 VERTICAL DEFLECTION DRIVE 2 12 4 7 PINCUSHIN COMPENSATOR CIRCUIT II FEEDBACK CIRCUIT Q431 BUFFER Q523 OVER CURRENT DETECTOR P5501 11 P5501 10 P501 3 P501 4 D5304 VIDEO SIGNAL D505 TP553 TP554 RED AMP TP49 RED DEFLECTION YOKE VM C...

Page 60: ...C CONVERT BUFFER VCO 31 25 FROM IC6001 29 V MUTE H VIDEO SIGNAL Q5302 BUFFER 5 6 44 43 40 10 19 16 18 11 VERTICAL DEFLECTION DRIVE 2 12 4 7 PINCUSHIN COMPENSATOR CIRCUIT II FEEDBACK CIRCUIT Q431 BUFFER Q523 OVER CURRENT DETECTOR P5501 11 P5501 10 P501 3 P501 4 D5304 RED AMP TP49 TP48 RED TP46 DEFLECTION YOKE VM COIL GREEN AMP BLUE AMP CRT HEATER CRT C B A P351 4 P351 5 P351 6 RGB AMP P352 1 RED P6...

Page 61: ...CLOCK TRAY CLOSE DETECT L TRAY OPEN DETECT L 78 LOADING MOTOR CONTROL 7 FOCUS MOTOR CONTROL 22 TRACKING MOTOR CONTROL 23 75 TRAVERSE MOTOR CONTROL 6 76 SPINDLE MOTOR CONTROL 5 148 147 CLOSE OPEN SW8952 SW8951 6 5 8 59 IC8004 EEPROM 60 I2 C SERIAL CLOCK I2 C SERIAL DATA VCC I2 C SERIAL CLOCK I2 C SERIAL DATA IC8001 DVD SIGNAL PROCESSOR DVD MICROCONTROLLER P8901 3 P8901 21 V REF HFM 127 77 V REF H H...

Page 62: ...8 TP8409 TP8410 TP8411 DIGITAL FILTER MODULATOR 27MHz OSC VIDEO ENCODER DVD CD FORMATTER DVD DECODER ERROR CORRECTION ECC VIDEO I F RF SIGNAL PROCESS AUDIO I F TO AUDIO BLOCK DIAGRAM A MUTE P8401 6 57 54 56 22 26 29 35 192 195 197 200 203 204 206 208 210 212 21 23 25 27 30 33 36 37 39 43 45 47 50 51 217 220 221 223 224 226 228 230 233 237 238 2 4 5 7 8 10 11 13 42 44 45 47 48 50 51 53 1 2 4 5 7 8 ...

Page 63: ...ta Communication failure between IC6001 and IC8001 within 30sec IC6001 will switch automatically to TV Check the TV mode and DVD mode Check the voltage during the 30 seconds during which the unit remains in DVD mode First confirm that the Main C B A is O K other than DVD Mechanism Unit and DVD Main C B A by referring to Communication Timing Chart 1 and Communication Timing Chart 2 Check points 1 A...

Page 64: ...0 mV 400 mVp p Check the voltage at TP8906 on the DVD Main C B A Is it 5 0 V Replace the Q8905 and Q8906 on the DVD Main C B A Replace the IC8001 on the DVD Main C B A NG OK NG OK Note Check the voltage during 10 to 20 seconds as soon as disc has been inserted OK Repair the around circuit of SW_ 5V_DVD line NG Check the voltage at TP8903 on the DVD Main C B A Is it 5 0 V Check the voltage at Q8905...

Page 65: ...no Test Pin DVD Main C B A DVD Sub C B A Component Side Foil Side TP8958 TP8523 Q8906 C B E IC8001 TP8011 TP8006 TP8010 TP8005 TP8809 TP8807 TP8009 TP8806 TP8813 TP8812 TP8916 TP8923 Q8905 C B E TP8906 TP8903 IC8801 TP8823 TEST POINTS LOCATION TROUBLESHOOTING HINTS PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K 65 ...

Page 66: ...PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K 66 ...

Page 67: ...11 EXPLODED VIEWS 11 1 DVD SECTION PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K 67 ...

Page 68: ...11 2 CHASSIS FRAME SECTION 1 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K 68 ...

Page 69: ...11 3 CHASSIS FRAME SECTION 2 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K 69 ...

Page 70: ...11 4 CHASSIS FRAME SECTION 3 PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K 70 ...

Page 71: ...11 5 PACKING PARTS AND ACCESSORIES SECTION PV 20DF25 PV 27DF25 PV 27DF5 PV 20DF25 K PV 27DF25 K 71 ...

Page 72: ...2 Mechanical Replacement Notes 1 Section No of parts shown in Exploded Views are indicated in the Remarks column 2 The Infrared Remote Control Unit Ref No 123 replacement part is available as a complete assembly unit only Do not try to disassemble the Infrared Remote Control Unit However the battery cover is available separately as a replacement part 3 When replacing the DVD Frame Ref No 317 be su...

Page 73: ...170 DVD CASSETTE DOOR SPRING 2 204 LSMA0800 DVD MOUNT ANGLE 1 210 LSGU0670 OPEN BUTTON H A B C D 2 210 LSGU0688 OPEN BUTTON H E 2 211 LSGU0666 2 2 BUTTON A B C D 2 211 LSGU0686 2 2 BUTTON E 2 212 LSGU0668 4 BUTTON A B C D 2 212 LSGU0687 4 BUTTON E 2 213 LSGU0661 POWER BUTTON A B C D 2 213 LSGU0685 POWER BUTTON E 2 215 LSQL1623 DOLBY DTS CAUTION LABEL 2 230 LSGP0381 TRAY COVER 1 242 LSXK0227 DVD UN...

Page 74: ...D CIRCUIT BOARD ASSEMBLY Ref No Part No Part Name Description Remarks E10 LSEP2220B MAIN C B A A B E S D RTL E10 LSEP2220A MAIN C B A C D E E S D RTL E11 LSEP2221A OPERATION C B A RTL E30 LSEP2218D DEFLECTION C B A A B RTL E30 LSEP2218C DEFLECTION C B A C D E RTL E60 LRP63022F CRT C B A A B RTL E60 LSEP2079D CRT C B A C D E RTL E70 LSUQ0079 DVD MAIN C B A E S D RTL MKI E80 LSEP2187A DVD SUB C B A ...

Page 75: ...5381 2SD1819A0L TRANSISTOR SI NPN CHIP or Q5381 B1ABCF000020 TRANSISTOR SI NPN CHIP Q5612 2SD1819A0L TRANSISTOR SI NPN CHIP Ref No Part No Part Name Description Remarks or Q5612 B1ABCF000020 TRANSISTOR SI NPN CHIP Q5613 UNR221100L TRANSISTOR SI NPN CHIP or Q5613 B1GBCFJJ0002 TRANSISTOR SI NPN CHIP Q5614 2SD1819A0L TRANSISTOR SI NPN CHIP or Q5614 B1ABCF000020 TRANSISTOR SI NPN CHIP Q5651 2SB1218A0L...

Page 76: ...DE SI D4702 MA2C165001VT DIODE SI or D4702 B0AACK000004 DIODE SI D5304 MA2C165001VT DIODE SI or D5304 B0AACK000004 DIODE SI D5307 MA2C165001VT DIODE SI Ref No Part No Part Name Description Remarks or D5307 B0AACK000004 DIODE SI D5308 MA2C165001VT DIODE SI or D5308 B0AACK000004 DIODE SI D5309 MAZ40510MF DIODE ZENER 5 1V or D5309 B0BA5R100022 DIODE ZENER 5 1V or D5309 B0BA5R200015 DIODE ZENER 5 2V D...

Page 77: ...0K Ref No Part No Part Name Description Remarks R4372 ERJ3GEYJ104V MGF CHIP 1 16W 100K R4373 ERJ3GEYJ101V MGF CHIP 1 16W 100 R4374 ERJ3GEYJ101V MGF CHIP 1 16W 100 R4502 ERJ3GEYJ102V MGF CHIP 1 16W 1K R4503 ERJ3GEYJ103V MGF CHIP 1 16W 10K R4504 ERJ3GEYJ103V MGF CHIP 1 16W 10K R4505 ERJ3GEYJ102V MGF CHIP 1 16W 1K R4506 ERJ3GEYJ472V MGF CHIP 1 16W 4 7K R4591 ERDS2TJ681 CARBON 1 4W 680 R4592 ERDS2TJ68...

Page 78: ...16W 10K R6095 ERJ3GEYJ103V MGF CHIP 1 16W 10K R6112 ERJ3GEYJ223V MGF CHIP 1 16W 22K R6113 ERJ3GEYJ183V MGF CHIP 1 16W 18K Ref No Part No Part Name Description Remarks R6114 ERJ6GEYJ391V MGF CHIP 1 10W 390 R6115 ERJ3GEYJ103V MGF CHIP 1 16W 10K R6117 ERDS2TJ560T CARBON 1 4W 56 R6118 ERJ3GEYJ475V MGF CHIP 1 16W 4 7M R6119 ERJ3GEYJ332V MGF CHIP 1 16W 3 3K R6120 ERJ3GEYJ152V MGF CHIP 1 16W 1 5K R6121 E...

Page 79: ...UF C4503 F1H1H122A219 C CHIP 50V 1200PU C4504 F1H1H122A219 C CHIP 50V 1200PU Ref No Part No Part Name Description Remarks C4505 F2A1H1R00035 ELECTROLYTIC 50V 1UF C4506 F2A1H4R70022 ELECTROLYTIC 50V 4 7UF C4507 F2A1E4710047 ELECTROLYTIC 25V 470UF C4508 F2A1E4710047 ELECTROLYTIC 25V 470UF C4509 F2A1C101A534 ELECTROLYTIC 16V 100UF C4510 F2A1E4710047 ELECTROLYTIC 25V 470UF C4601 F1H1C104A041 C CHIP 16...

Page 80: ...LECTROLYTIC 50V 2 2UF C9024 F1H1H103A748 C CHIP 50V 0 01UF C9026 ECJ1VC1H560J C CHIP 50V 56PF C9027 ECJ1VC1H560J C CHIP 50V 56PF C9501 ECJ1VC1H101J C CHIP 50V 100PF C9503 ECJ1VC1H101J C CHIP 50V 100PF FILTERS Ref No Part No Part Name Description Remarks FL5651 F1Y2A1030005 L C COMPLX CMP COILS Ref No Part No Part Name Description Remarks L801 G0B452H00001 LINE FILTER 2 5A 4 5MH or L801 ELF21V025A ...

Page 81: ...M00HC INFRARED RECEIVER UNIT 12 3 3 DEFLECTION C B A INTEGRATED CIRCUITS Ref No Part No Part Name Description Remarks IC451 C1AA00000709 IC LINEAR IC752 C0ABAA000005 IC LINEAR C D E TRANSISTORS Ref No Part No Part Name Description Remarks Q431 2SA1309AHA TRANSISTOR SI PNP CHIP or Q431 B1ACCF000047 TRANSISTOR SI PNP CHIP Q501 B1AACN000015 TRANSISTOR SI NPN A B Q501 2SC3941H TRANSISTOR SI NPN C D E ...

Page 82: ...757 ERJ3GEYJ752V MGF CHIP 1 16W 75K C D E R758 ERJ3GEYJ823V MGF CHIP 1 16W 82K C D E R759 ERJ3GEYJ683V MGF CHIP 1 16W 68K C D E R760 ERJ3GEYJ474V MGF CHIP 1 16W 470K C D E Ref No Part No Part Name Description Remarks R761 ERJ3GEYJ103V MGF CHIP 1 16W 10K C D E R762 ERJ3GEYJ123V MGF CHIP 1 16W 12K C D E R763 EVMEGSA00B14 VARIABLE 10K C D E R764 ERJ3GEYJ682V MGF CHIP 1 16W 6 8K C D E R765 ERJ3GEYJ182...

Page 83: ...28 LSSC0254 HEAT SINK C D E 760 TUC77628 HEAT SINK 794 TUC15776 HEAT SINK C D E 12 3 4 CRT C B A Models A B TRANSISTORS Ref No Part No Part Name Description Remarks Q351 2SC3063000RL TRANSISTOR SI NPN or Q351 B1BAAN000034 TRANSISTOR SI NPN or Q351 B1BAAN000035 TRANSISTOR SI NPN Q352 2SC3063000RL TRANSISTOR SI NPN or Q352 B1BAAN000034 TRANSISTOR SI NPN or Q352 B1BAAN000035 TRANSISTOR SI NPN Q353 2S...

Page 84: ...E S D MKI IC8003 C3ABPG000142 IC 64M D RAM E S D MKI or IC8003 C3ABPG000133 IC 64M SDRAM E S D MKI IC8004 LSSK0056 IC 4K EEP ROM E S D MKI IC8005 C0DBEZG00017 IC LINEAR MKI IC8501 C0FBBK000035 IC LINEAR MKI IC8503 C0ABBB000256 IC LINEAR MKI IC8801 C0GBG0000054 IC LINEAR MKI TRANSISTORS Ref No Part No Part Name Description Remarks Q8401 2SB1218A0L TRANSISTOR SI PNP CHIP MKI or Q8401 B1ADCF000063 TR...

Page 85: ...3YED202V MGF CHIP 1 16W 2K MKI R8065 ERJ3GEYJ6R8V MGF CHIP 1 16W 6 8 MKI R8066 ERJ3GEYJ101V MGF CHIP 1 16W 100 MKI R8067 ERJ3GEYJ101V MGF CHIP 1 16W 100 MKI R8068 ERJ3GEYJ101V MGF CHIP 1 16W 100 MKI R8071 ERJ3GEYJ223V MGF CHIP 1 16W 22K MKI R8401 ERJ3GEYJ102V MGF CHIP 1 16W 1K MKI R8402 ERJ3GEYJ102V MGF CHIP 1 16W 1K MKI R8403 ERA3YED102V MGF CHIP 1 16W 1K MKI R8404 ERA3YED102V MGF CHIP 1 16W 1K M...

Page 86: ...150J C CHIP 50V 15PF MKI C8078 ECJ1VC1H150J C CHIP 50V 15PF MKI C8080 F1H1H102A219 C CHIP 50V 0 001UF MKI Ref No Part No Part Name Description Remarks C8081 F1H1H102A219 C CHIP 50V 0 001UF MKI C8082 F1H1H102A219 C CHIP 50V 0 001UF MKI C8083 F1H1H102A219 C CHIP 50V 0 001UF MKI C8086 F2A1C1000035 ELECTROLYTIC 16V 10UF MKI C8090 F2A0J1010041 ELECTROLYTIC 6 3V 100UF MKI C8091 F2A0J1010041 ELECTROLYTIC...

Page 87: ...CHIP MKI L8415 J0JHC0000068 EMI FILTER CHIP MKI L8416 J0JBC0000010 BEAD INDUCTOR CHIP MKI L8418 J0JBC0000010 BEAD INDUCTOR CHIP MKI L8419 J0JBC0000010 BEAD INDUCTOR CHIP MKI L8420 J0JBC0000010 BEAD INDUCTOR CHIP MKI L8421 J0JBC0000010 BEAD INDUCTOR CHIP MKI L8422 J0JBC0000010 BEAD INDUCTOR CHIP MKI L8424 J0JBC0000010 BEAD INDUCTOR CHIP MKI L8429 J0JHC0000078 EMI FILTER CHIP MKI L8431 J0JCC0000063 ...

Search results

Summary of Contents for PV-20DF25-K

Reviews:

Related manuals for PV-20DF25-K

Brands by name

Popular brands

Panasonic PV-20DF25-K, Service Manual

Search results

Summary of Contents for PV-20DF25-K

Reviews:

Related manuals for PV-20DF25-K

Brands by name

Popular brands