Panasonic TC-P42GT30A, Service Manual, Page: 17 / 112

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TC-P42GT30A
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:
Caution:
New key will be generated and previous TV programmes recorded in USB HDD will not be viewed. (See Chap.5)
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-LDA3 (STM) A-BOARD
MEM1 IC8902 PEAKS EEPROM A-BOARD
MEM2 IC8901 STM EEPROM A-BOARD
AVSW IC3001 AUDIO/VIDEO SW A-BOARD
TEMP IC3753 TEMP SENSOR A-BOARD
LAN IC8601 ETHERPHY A-BOARD
ID A-BOARD
ID2 A-BOARD
LP1 IC9300 LP1 A-BOARD
HDMI-SW IC4700 HDMI SW A-BOARD
IRDRV IC5901 IR LED DRIVER A-BOARD