Troubleshooting Guide; Check Of The Iic Bus Lines - Panasonic TH-P42UT30A Service Manual

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.
TUN TU4801
STBY IC8000
MEM1 IC8902
MEM2 IC8901
AVSW IC3001
TEMP IC3753
LAN IC8601
ID
ID2
LP1 IC9300
IRDRV IC5901
Description
TUNER A-Board
PEAKS-LDA3 (STM) A-Board
PEAKS EEPROM A-Board
STM EEPROM A-Board
AUDIO/VIDEO SW A-Board
TEMP SENSOR A-Board
ETHERPHY A-Board
A-Board
A-Board
LP1 A-Board
LED DRIVE A-Board
17
Check P.C.B.