Panasonic TH-42PX80U Скачать руководство пользователя страница 39 | Manualshive

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Panasonic TH-42PX80U Скачать руководство пользователя страница 39

Picture Trouble at Right or Left half (50 Inch)

<Symptom>

No Picture, Picture noise, etc.

Trouble at Left half :

A-board defect

1

2

Trouble at Right half :

A-board defect

Symptom
Result

:

Cyan noise (Right side)

:

A board

<Actual Symptom>

<Symptom>

<Defective board>

<NG Area>

<Models>

50inch (HD Panel)

SC

SU

SD

SS

C1

C3

SS2

SS3

C2

A

1

2

(Front view)

39

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Содержание TH-42PX80U

Страница 1: ...0U TH TH 50PX80U 50PX80U Technical Guide Technical Guide Plasma Plasma GPH11DU Chassis GPH11DU Chassis HD Models HD Models Troubleshooting Handbook Troubleshooting Handbook Panasonic Technology and Se...

Страница 2: ...This page is purposely left blank 2...

Страница 3: ...n 42 Examples of Symptoms and Remedies 44 49 Self check Procedure 50 Reset 51 Driver Setup Adjustment 52 53 Subject Page Connector s Location TH 42PX80U 5 Power LED s Response to Shutdown Operation 7...

Страница 4: ...before shutdown 2 Check if the power comes up after disconnecting the board under suspicion If power comes up after disconnecting a board the board is defective Power comes up equals no shutdown 2 Tr...

Страница 5: ...5 Connector s Location TH 42PX80U...

Страница 6: ...ubleshooting Shutdown Problems 6 CAUTION Some steps requires removal of connectors and sometimes PC boards removal Do not let the TV run for more than 30 seconds while connectors or boards are disconn...

Страница 7: ...5V sense time out Panel Status abnormality Scan Driver 2 abnormality Voltage for sound abnormality REG voltage abnormality A Board 15V SOS A Board 3 3V SOS P Board Power SOS A Board 5V SOS SC SU SD Bo...

Страница 8: ...Defective Board A GS Disconnect GS52 on the SD Card Slot Board GS board See Figure 1 Plug in the TV and turn it on Warning Disconnect AC Power prior to making any disconnection or connection Replace...

Страница 9: ...1 SS11 discharge is necessary to prevent potential shock caused by VSUS Unplug the TV Re connect CN P12 SS11 SS34 and SS23 1 Turn the TV on Is there 15V output at CN P25 pin 1 or 2 before the TV shuts...

Страница 10: ...Mode and Defective Board Trouble Mode 3 3V down SOS Defective Board A Board How to find the defective boards Replace the A board Warning Disconnect AC Power prior to making any disconnection or conne...

Страница 11: ...OS Defective Board Primarily P board or possible A board How to find the defective boards Yes No Warning Disconnect AC Power prior to making any disconnection or connection 11 Note CN Connector A Boar...

Страница 12: ...lead cable to ground Yes 12 Proceed to more extensive troubleshooting of the slides that follow No Note CN Connector Warning Disconnect AC Power prior to making any disconnection or connection 1 The r...

Страница 13: ...in the TV and turn it on Connect SS23 1 Disconnect CN 31and A32 on the A board With the TV disconnected measure continuity between pin 5 of CN P25 and GND Is pin 5 of CN P25 shorted to GND Connect A31...

Страница 14: ...lug in the TV and turn it on Warning Disconnect AC Power prior to making any disconnection or connection 1 The reference number of the sustain data connector is different in some of the models TH 42PX...

Страница 15: ...floating ground screws on the SU board which are located above and below connector SU41 see figure 2 Caution Before turning the unit on confirm that the jumper is not connected to a chassis ground scr...

Страница 16: ...nnectors SC2 and SC20 from the SC board Plug in the TV and turn it on Disconnect the SD board and reconnect the SU board See instructions on slide 15 Plug in the TV and turn it on Does the TV shut dow...

Страница 17: ...Panel Defective Board possibility SS A board SS A PDP P Board No No Yes 17 Panel Yes No Disconnect CN SS23 from the SS board Plug in the TV and turn it on Does the TV power up and stay on Is the anode...

Страница 18: ...s Trouble Mode and Defective Board Trouble Mode Panel Status Defective Board D Board How to find the defective boards Replace the A board Warning Disconnect AC Power prior to making any disconnection...

Страница 19: ...rd Do the AC relays click after the TV is plugged into the AC line Replace The A board If cable between connectors GS52 and A51 is OK Replace the GS board 19 Trouble Mode Dead No power Defective Board...

Страница 20: ...till blink 10 times Replace the K board No No Yes Yes Does the TV shut down Replace The A board Replace the GS board Replace The A board NOTE When taking voltage reading place your meter s probe on th...

Страница 21: ...in 8 and 10 of CN P12 Plug in the TV and turn it on Yes No Note CN Connector Go to the Next slide B Go to the Next slide A Replace The SS board Replace The SC board Warning Disconnect AC Power prior t...

Страница 22: ...any of these voltages missing Warning Disconnect AC Power prior to making any disconnection or connection 1 The reference number of the sustain data connector is different in some of the models TH 42P...

Страница 23: ...ectors Plug in the TV and turn it on Warning Disconnect AC Power prior to making any disconnection or connection No Yes Replace The A board Does the power LED stay on when the TV is turned on Check th...

Страница 24: ...ode and Defective Board Trouble Mode Communication error with IC8001 Defective Board A Board How to find the defective boards The A board is defective Warning Disconnect AC Power prior to making any d...

Страница 25: ...lace The A board Go to the Next slide Yes Yes Yes Yes Yes NO NO NO NO NO Yes NO 25 Trouble Mode Dead No power Defective Board Possibility P A GS K Is there continuity between pins 8 and 10 of connecto...

Страница 26: ...connectors K1 and A1 is OK Replace the K board Continue from Previous slide NO NO NO Yes Yes Yes Replace The P board Do the AC relays click after the TV is plugged into the AC line Replace The A boar...

Страница 27: ...creen No Yes Connect the SU board Disconnect the SD Board from the SC board Turn the unit on Is there a picture at the upper half of the screen SC and possibly Panel Warning Disconnect AC Power prior...

Страница 28: ...lace The A board Replace The A board Unplug the TV from the wall outlet Disconnect connector A5 from the A board Reconnect the TV and wait for it to come on by itself Is the screen completely white Is...

Страница 29: ...AC Power prior to making any disconnection or connection 29 Yes Check the cable between connector A7 on the A board and P6 on the P board Note CN Connector Is there 15V at pin 1 of CN A7 on the A boa...

Страница 30: ...This page is purposely left blank 30...

Страница 31: ...Troubleshooting for Picture Problems 31...

Страница 32: ...e 2 No picture 2 Basic concept of determining the defective board 1 Which area is the symptom displayed on the screen A Part of the screen B All over the screen 3 Adjustment after PCB exchange 1 After...

Страница 33: ...d at the left top corner Finally gas leakage will lead to the symptom No picture with buzz noise How to determine the defective board Start Upper or Lower half from front view Upper half Lower half Bo...

Страница 34: ...Diagram Possible Cause Back side view IC9900 DATA DRIVER IC9500 A MICRO PROCESSOR IC4510 Peaks Lite IC1100 HDMI I F PICTURE OUTPUT IC8001 S F PROCESSOR PLASMA AI DISCHARGE CONTROL LVDS RECEIVER SU SD...

Страница 35: ...iew SU SD SC SS Buffer IC Buffer IC Sustain Control Pulse Scan Control Pulse A Board defect Waveform OK SC SU SD Board defect Waveform NG Up to SC Board Refer to Diagnosis 3 on next page Result Cause...

Страница 36: ...oard Situation Disconnect SU Board Connect SD Condition Waveform OK Cause SU Board Disconnect SD Board Connect SU Waveform OK SD Board Disconnect the SU and SD Boards Waveform OK SC Board Back side vi...

Страница 37: ...board or C board NG D board or C board FPC 1 Line FPC Buffer C Board Buffer C Board Driver IC 1 Block 2 Blocks PDP panel Driver IC NG or A board or C board Driver IC Driver IC Driver IC PDP Panel PDP...

Страница 38: ...Trouble at Upper half SU board SC or A defect NG Area No Picture Picture noise Full Horizontal line etc Actual Symptom Full Horizontal line at both area SS board A defect Symptom Result Symptom Result...

Страница 39: ...re Picture noise etc Trouble at Left half A board defect 1 2 Trouble at Right half A board defect Symptom Result Cyan noise Right side A board Actual Symptom Symptom Defective board NG Area Models 50i...

Страница 40: ...re noise Full Vertical line etc Front view SC SU SD SS C1 C2 A 1 2 Trouble at Left half A or C2 board Panel defect 1 2 Trouble at Right half A or C1 board Panel defect Symptom Result Vertical line Pan...

Страница 41: ...ertical line etc Symptom NG Area Models 50inch HD Panel 1 Trouble at Upper right 2 Trouble at Upper middle C1 board or Panel defect 3 C2 board or Panel defect C3 board or Panel defect SC SU SD SS C1 C...

Страница 42: ...A or SC board SU SD defect Symptom Result Symptom Result Symptom Result Vertical line All over screen A board White balance NG A board Abnormal Picture SC board A SC Actual Symptom Picture noise Full...

Страница 43: ...Examples of Symptoms and Remedies 43...

Страница 44: ...een Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result SC Board Model 42 inch Result SC Board Model 42 inch Result...

Страница 45: ...reen Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result...

Страница 46: ...esult A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch...

Страница 47: ...ll over the screen Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 4...

Страница 48: ...ight half or Left half Model 50 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Mod...

Страница 49: ...Upper or Bottom Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result A Board Model 42 inch Result SU Board Model 42 inch Result A Board Model 42 inch Result SC Board Model 4...

Страница 50: ...from the wall outlet Self check Screen CHASSIS GPH11D All models TV volume down OK on remote only does a basic IC self check It does NOT Reset the TV It does not clear channel programmed settings pict...

Страница 51: ...ed parameters will be erased To Reset the Unit turn the TV on and while pressing the VOLUME button on the main unit press the Menu button on the remote control for more than 3 seconds The Self Check m...

Страница 52: ...the adjustment of Vad which should be 105V When Vad 149V Voltage of Vscn is 4V 4V Note See the panel label for voltages that are not listed in the service manual Test point Volume Level T2 TPSC1 SC V...

Страница 53: ...the adjustment of Vad which should be 105V When Vad 149V Voltage of Vscn is 4V 4V Note See the panel label for voltages that are not listed in the service manual Test point Volume Level T2 TPSC1 SC V...

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