LG KP175 - Speaker Trouble

4.9 Speaker Trouble
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 64 -
TEST POINT
CIRCUIT
U201
R204 R207
CN201
SPEAKER
CN201
17-8T-01PP
SUSY0022601
1
2
C210
39p
VA203 ICVN0505X150FR
0
R203
VA204 ICVN0505X150FR
39p
C206
39p
C211
R206
0
SPK_OUT_N
SPK_OUT_P
Figure 4.9
AUDIO POWER AMP
VBAT
C212
220n
C213
DNI
R208
100K
C207 470n
R202 39K
0.1u
C203
1u
C202
C205
470n
TPA6205A1ZQVRU201
BYPASS
C1
GND
B2
C2
IN+
C3
IN-
A3
VDD
VO+
B3
VO-
A1B1
_SHUTDOWN
39KR209
10KR207
R204 10K
C201 DNI
SPK_OUT_N
SPK_OUT_P
SPK_P_ABB
SPK_N_ABB
AMP_SHDN