Receiver & Speaker Trouble - LG KF510C Service Manual

5.6 Receiver & Speaker trouble
Check Points
- Speaker soldering status
- Audio amp & Analog switch soldering status
AUDIO AMP
TP2
BB_SND_R
BB_SND_L
FM_SND_R
FM_SND_L
SDA
SCL
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TP1
Check so ld erin g status
TP4
Check sig nal s tatus
A3
MINP
B3
MINN
A5
RIN
220n C213
B4
LIN
220n C214
A4
BYPASS
D3
VDDI2C
D4
SDA
E5
SCL
2V62_VIO
R214 100K
C220
C223
C224
2.2u
4.7u
0.1u
TP3
U303
U200
VBAT
C202
C203
2.2u
0.1u
D5
LS+
B5
LS-
D1
HPL
U200
LM49100GR
E1
HPR
E3
GNDS
D2
VDDHP
A1
VDDCP
C221
4.7u
- 87 -
5. Trouble shooting
SPK_OUTP
SPK_OUTN
L216 100nH
HSO_L
L210 100nH
HSO_R
C217 C218
47p 47p
2V85_VFM
L215
100nH
C222
0.1u
LGE Internal Use Only