Receiver & Speaker Trouble - LG KS360 Service Manual

5. Trouble shooting
5.6 Receiver & Speaker trouble
Check Points
-Speaker pin contact
-Audio amp soldering
-SUB PMIC soldering
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
BB_SND_R
BB_SND_L
FM_SND_R
FM_SND_L
i2C_SDA
I2C_SCL
SPK
L500
SPK_P
100nH
C542
100p
L501
SPK_N
100nH
C544 C545
47p 47p
LGE Internal Use Only
C301
1u
C304 1u
A4
C1N
C305 1u A5
C1P
TP1
C308 1u D1
INA2
C309 1u D2
INA1
U303
TP2
C311 1u C1
MAX9877AEWP_TG45
INB2
C312 1u C2
INB1
B2
BIAS
B3
SDA
C3
SCL
D4
RXIN+
B4
RXIN-
C315
1u
TP3
CN501
1
2
TP4
- 76 -
VBAT
C302
1u
A1 R313 0
HPR
A2 R314 0
HPL
D5
OUT+
B5
OUT-
MAIN RECEIVER
RCV_P
RCV_N
C101 C102
47p 47p
Copyright © 2008 LG Electronics. Inc. All right reserved.
HSO_R
HSO_L
SPK_P
SPK_N
+
TP5
R100 0
OUT100
R102 0
OUT101
-
TP6
Only for training and service purposes