Only For Training And Service Purposes - LG GM200 Service Manual

CHECKING FLOW
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

START
Change the battery
Battery is charged?
NO
Is I/O Connector(CN302)
well-soldered ?
YES
Check the voltage at
TP1= 5.1V ?
YES
Check the voltage at
C312 = 5.1V ?
YES
Is the voltage
at pin 12 of U102 = 5.1V?
(TP1)
Is the voltage
of R120 = 2.5V?
(TP2)
YES
Battery is charged?
YES
Charging is
properly operating
YES
Charging is
properly operating
NO
Resolder the CN302
(Pin 12,13 : VCHARGE)
NO
The TA is out of order
Change the TA
NO
Replace the
FB303
NO
Replace the
U102
NO
Replace the R120,R123
NO
Replace the main board
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4. TROUBLE SHOOTING
LGE Internal Use Only