LG M6100 Service Manual - Page 73
D401, U402 are
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4. TROUBLE SHOOTING Checking Flow START NO I/O Connector(CN303) Is well-soldered ? YES Voltage at anode of NO D401 = 5.2V ? YES D401, U402 are NO well-soldered? YES NO Voltage across R408 is about 1.2V? YES NO Battery is charged? YES Charging is properly operating Resolder the CN303 Pin 4,5 : VCHARGE Pin12,19,26 : GND The TA is out of order Change the TA Resolder the D401,U402 Replace the D401,U402 The battery may have problems. Change the battery. - 74 -
4. TROUBLE SHOOTING
- 74 -
START
I/O Connector(CN303)
Is well-soldered ?
Voltage at anode of
D401 = 5.2V ?
D401, U402 are
well-soldered?
YES
YES
YES
Voltage across R408 is
about 1.2V?
YES
Battery is charged?
YES
Charging is
properly operating
NO
NO
NO
NO
NO
Resolder the CN303
Pin 4,5 : VCHARGE
Pin12,19,26 : GND
The TA is out of order
Change the TA
Resolder the
D401,U402
Replace the
D401,U402
The battery may have
problems.
Change the battery.
Checking Flow