LG KE600 Service Manual - Page 86
from C312, C313
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5. Trouble shooting START Check Speaker tension and Contacts are clear. Check signals from FB309, FB310 is correct? No Check signal from C312, C313 is flowed? No Check signal from R327, R330 is flowed? Yes Replace Main PCB Yes Resolder FB309, FB310 or Replace them then retest Yes Replace U301 then retest No Replace U302 Then retest Assemble - 87 -
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5. Trouble shooting
- 87 -
START
Check signals
from FB309,
FB310 is
correct?
Check signal
from C312, C313
is flowed
?
Assemble
Replace U301
then retest
No
Yes
Yes
Check Speaker tension and
Contacts are clear.
Check signal
from R327, R330
is flowed
?
Replace U302
Then retest
No
No
Replace Main PCB
Yes
Resolder
FB309, FB310 or
Replace them
then retest