Troubleshooting Guide; Check Of The Iic Bus Lines - Panasonic TH-P42UT50D 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 USB HDD
Recording) (Z only)
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote
control 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 TU6705
STBY IC8000
MEM1 IC8902
MEM2 IC8900
PANEL IC9300
TEMP IC2001
LAN IC8650
ID2
BT IC8000, A50
Description
TUNER A-BOARD
PEAKS-LD4(STM) A-BOARD
PEAKS EEPROM A-BOARD
NAND FLASH A-BOARD
PD6H A-BOARD
TEMP SENSOR A-BOARD
ETHERPHY A-BOARD
A-BOARD
BLUETOOTH A-BOARD/BLUETOOTH
18
Check Point