LG GB220 - Speaker Trouble

- 89 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
CIRCUIT
4.9 Speaker Trouble
TEST POINT
Figure 4.9.1
C204C202
U200
U10
1
C206
C208
L304L305
U10
0
Audio Sub System
A3
MONO_IN+
E1
D1
MONO_IN-
C2
RIN ROUT
E2
SCL
B3
SDA
B2
B1
VDDA
VDDLS
B4
D2
VO_LDO
C4
VSSCP
LM49150TLX
BYPASS
C3
D3
CIN CIP
D4 A2
GND GND_CP
E4
I2CVDD
A1
C1
LIN
LOUT
E3
MONO+
A4
MONO-
U200
VBAT
2.2u
C212
2.2u
C211
C213
0.1u
C209 2.2u
C214
2.2u
220nC206
C204 0.1u
C203
DNI
C202 0.1u
C201
47p
2.2u
C200
C208 220n
1V81_VDD
LSP
LSN
RCV_P
I2C_SDA
I2C_SCL
HP_ROUT
HP_LOUT
RCV_N
HP_A_LOUT
HP_A_ROUT
27p
C331
47p C334
22nH
L304
C33547p
L305
22nH
LSN
LSP