LG KE600 Service Manual - Page 101
R328-2.85V, C337-2.85V
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5. Trouble shooting Checking Flow Check a condition of Ear jack connector A condition is No Good? Yes Check a condition of Matching components (C326, L303, C332, D308) Replace CN302 A conditYioens is No good? Yes No Check a condition of Power supply (R328-2.85V, C337-2.85V) Give the additory solder in C326, L303, C332, D308 FM_Radio Yes Working is good? A condition is good? Yes Check a condition of CLK (R337-32k) A condition is good? Yes Check a condition of U303 soldering A condition is good? Yes Replace Main board change No Replace Main PCB Board Yes No FM_Radio Yes Working is good? No Replace U305 Yes No Replace U303 Finish - 102 -
Checking Flow
5. Trouble shooting
- 102 -
A condition is
Good?
Replace CN302
Yes
No
Yes
Check a condition of
U303 soldering
Give the additory solder in
C326, L303, C332, D308
No
Yes
Replace Main PCB Board
No
A condition is
good?
A condition is
good?
A condition is
good?
Replace U305
Replace U303
Yes
No
FM_Radio
Working is good?
No
Yes
FM_Radio
Working is good?
No
A condition is
good?
No
Replace Main board
change
Yes
Check a condition of CLK
(R337-32k)
Check a condition of Power supply
(R328-2.85V, C337-2.85V)
Check a condition of Matching
components (C326, L303, C332, D308)
Check a condition of
Ear jack connector
Finish
Yes
Yes
Yes
Yes