LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.11 Microphone Trouble
Check Points
-18pin IO connector
-Passive Parts soldering Status
TP1 (R214), TP2 (C222) : Mic path
-> Audio signal Check
4. TROUBLE SHOOTING
- 62 -
TP1
TP2
TEST POINT
VA205
0.1u
C220
DNI
R225
0
R227
22n
C224
C221
10u
1K
R214
39p
C217
C223
DNI
SPM0204LE5-QB
2
G1
3
G2
G3
4
G4
6
OUT
1
5
PWR
MIC200
DNI
C225
100nH
L200
L201
100nH
MICBIAS
C222
22n
MICIN
MICIP
CIRCUIT
TP 2
TP 1