Multimedia Microphone Trouble - LG KE800 Service Manual

4. Trouble Shooting

4.17. Multimedia Microphone Trouble

Check Points
-Mic Bias output form multimedia MIC LDO
-Microphone output
C730
R720
MULTI_MIC1_P
0 0.1u
C734
MULTI_MIC1_N
0.1u
Checking Point
Check solder
related
microphone path
MULTI MICROPHONE
2V5_MULTI_VMIC
R716
1K
R718 C728
C729
2.2K 22u
39p
C732
39p
C735 C736
R722 VA701
EVL5M02200
2.2K
39p 39p
MULTIMEDIA MIC LDO
2V8_CAM
MIC_PATH_SEL
MIC701
1
C733
0.1u
2
OSF213-42DC
VA702
EVL5M02200
- 58 -
2V5_MULTI_VMIC
U704
BH25FB1WHFV
Modified
1 5
STBY NC
2 6
GND BGND
3 4
VIN VOUT
C731
0.1u
R718