Lg Electronics LGC800W User Manual
LGC-800W
LG Information & Communications, Ltd.
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1. When power isn't "Turn On".
START
Recharge Batt.
Batt. Volt
< 3.6V
Yes
No
Change U703
Voltage at
16 pin of U703
< 3.6V
No
Yes
Voltage at
9 pin of U703
< 3.3V
Change U605
Voltage at
5 pin of U605
< 3.3V
Change Sub. Board
Turn On
Yes
No
Change Main Board
Change
Old Sub. Board
Yes
Yes
No
Yes
No
2. When LCD isn't displayed.
START
Refer to [1]
Circuit to supply
power nominal?
Yes
No
Check pins of con972
or
Reconnect con972
LCD supplied power
No
Yes
Good
LCD display?
Yes
No
Change LCD
CHAPTER 4. Trouble Shooting