Troubleshooting Guide; Check Of The Iic Bus Lines; Self-Check Indication And Forced To Factory Shipment Setting; Check Point - Panasonic TX-P42UT30Y 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:

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 IC2001
LAN IC8601
FE IC6700
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
OFDM A-BOARD
A-BOARD
LP1 A-BOARD
IR LED DRIVER A-BOARD
18
Check P.C.B.