LG KE600 Service Manual - Page 78
Replace main PCB
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Page 78 highlights
5. Trouble shooting START Connect power supply to the DUT Vbat = over 3.35V Yes "PWRON" signal Yes "RESETn" signal Yes Check the all LDO's output Yes Is the 26MHz clock From Yes Replace main PCB No Check the RPWRON, replace U203 No Check solder U206 or replace it No Check solder U201 or replace it No Check solder X601, U602 or replace it U203 U206 U201 U602 X601 - 79 -
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5. Trouble shooting
- 79 -
START
"PWRON"
signal
"RESETn"
signal
Check the all
LDO's output
Is the 26MHz
clock From
Replace main PCB
Check the
RPWRON,
replace U203
Check solder
U206 or replace it
Check solder
U201 or replace it
Check solder
X601, U602
or replace it
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Connect power
supply to the
DUT
Vbat = over 3.35V
U203
U206
U201
U602
X601