LG KE600 - Cell Phone Service Manual page 99

5. Trouble shooting
Checking Flow
Check a condition of Balun filter
output(FL201) power by using Spectrum
Check a condition of power supply
(C220-2.85V, C221-1.5V, C222-1.8V, C230-1.8V
Check a condition of Clock
Replace Main PCB Board
More than 0dBm
No
C201-2.72V, C202-2.8V)
condition is
good?
Yes
(R207-32k, C635-26M)
condition is
good?
Yes
Check a condition of
U202 soldering
condition is
good?
Yes
Finish
Yes Replace Bluetooth antenna
(BT201)
Bluetooth
No
Working is good?
No
Replace U202
No
Replace Main PCB Board
No
Replace U202
No
Bluetooth
Working is good?
Yes
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Yes
Yes
Yes