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