LG CU405 Service Manual page 54

SUMY0010512
OSF211-42D
C327 0.01u
LINE_N
C328 0.01u
LINE_P
SPK_AMP_EN
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1
2
MIC300
Speaker AMP
TPA2005D1ZQYR
62K D1
IN-
R311
62K
C1
U301
IN+
R312
A1
_SD
Figure . Audio part schematics
- 55 -
3. TECHNICAL BRIEF
MIC
R309
2.2K
C323 0.1u
C324 0.1u
B4
VDD1
C4
VDD2
B1
NC
FB301
A4
VO-
HH-1M1005-601JT
FB302
D4
VO+
HH-1M1005-601JT
C332
1u
MICBIAS
MIC1P
MIC1N
+VPWR
CON301
1
2
ENBY0001802
24-8005-002-100-867
LGE Internal Use Only