LG KG270 Service Manual page 80
Service manual
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Also See for KG270:
- Service manual (125 pages) ,
- User manual (69 pages) ,
- Manual (113 pages)
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Checking Flow
U304.PIN1 = High
U304.PIN4=2.8V
R336/R337/338
Check I2C signal and 32K clock
R329/R330
C332/C333
R327/R331
Connector Headset and
Turn on Radio and
tuned channel
Check LDO
Power
YES
Check
Control Signal
OK
Check
Audio Output
Of Transceiver
OK
Check
Audio Output
Of Amplifier
OK
Change PCB
- 81 -
4. TROUBLE SHOOTING
NO
Change U304
NG
Change PCB
NG
Change U302
NG
Change U303
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