Panasonic TCL42U30 - 42" LCD, Service Manual

Page: 15 / 82

15
6 Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
6.1. Check of the IIC bus lines
6.1.1. How to access
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.
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.
6.1.2. Exit
Disconnect the AC cord from wall outlet.
6.1.3. Screen display
6.1.4. Check Point
Confirm the following parts if NG was displayed.
DISPLAY Check Ref. No. Description Check Point
DTVSOC IC8001 Nile-TCON A-Board
SYSMPU IC8001 MPU (Nile-TCON) A-Board
TUN TU8302 TUNER A-Board
MEM1 IC8503 EEPROM (Nile-TCON) A-Board
MEM2 IC8004 EEPROM (SYSMPU) A-Board
AMP IC2106 AUDIO AMP A-Board
ZWEI2 IC9006 ZWEI2 TC-Board
EPOP