Panasonic TH-P42U30AZ, Service Manual

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7 Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
7.1. Check of the IIC bus lines
7.1.1. How to access
7.1.1.1. Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control
for more than 3 seconds.
7.1.1.2. Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote con-
trol for more than 3 seconds.
7.1.2. Screen display
7.1.3. Check Point
Confirm the following parts if NG was displayed.
7.1.4. Exit
Disconnect the AC cord from wall outlet or switch off the power with [ Power ] button on the main unit.
DISPLAY Check Ref. No. Description Check P.C.B.
TUN TU4801 TUNER A-Board
STBY IC8000 PEAKS-sLD2 (STM) A-Board
MEM1 IC8902 PEAKS EEPROM A-Board
MEM2 IC8901 STM EEPROM A-Board
AVSW IC3001 AUDIO/VIDEO SW A-Board
PD5 IC9300 PD5L A-Board
TEMP IC3753 TEMP SENSOR A-Board
LAN IC8601 ETHERPHY A-Board