LG KG110 - Speaker Trouble

CIRCUIT DIAGRAM
R271 0
(FOR TUNING NOISE)
RCV_N
R284 NA
R272 0
C277
0.1u
SPK_N
SHDM
3
SHDN
1
IN-
2
IN+
4
VCC
9
OUT+
10
OUT-
6
BIAS
5
NC
8
GND1
7
GND2
11
U202
MAX9718
AMP_SHDN
R275 0
R276 0
VEXT
R280
10K
VBAT
C291 1u
AMP_SHDM
SPK_RCV_SEL
C280
1u
AUDIO
C271
1u
SPK_RC V_P
SPK_P
NO1
C4
NO2
A4
NC1
C1
NC2
A1
IN1
C2
IN2
A2
COM1
C3
COM2
A3
V+
B4
GND
B1
U201
MAX4684EBC_T
SPK_RC V_N
C290 1u
R283 NA
RCV_P
SPK_RCV_N
SP201 SP202
C273
39p
RC201
RC202
C274
39p
C272
39p
SPK_RCV_P
R272
R271
U201
C290
C291
U202
Test point 1 Test point 2
4. TROUBLE SHOOTING
61
4.10 Speaker Trouble
CIRCUIT DIAGRAM
CHECKING FLOW