Microphone Trouble - LG GX500 Service Manual

4. TROUBLE SHOOTING
GX500 Operational Description

4.7 Microphone trouble

Check Points
-Microphone hole
-Mic. Bias & signal line
C307 C316
Figure 4-18. Microphone
Checking Flow
START
Check microphone sound
hole
Mic bias ON
(2.5V)when
Yes
Check Signal
C307, C316 (2.5V)
Assemble
LGE Internal Use Only
LG Electronics
L303
MIC301
No Check mic. Bias line
No
Replace microphone
- 86 -
86/143
(MIC301)
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