Receiver & Speaker Trouble - LG KC560 Service Manual

5.6 Receiver & Speaker trouble
Check Points
-Speaker contact
-Audio amp soldering
AUDIO_I N
BB_SND_R
BB_SND_L
FM_SND_R
FM_SND_L
KEY_RO W0
KEY_RO W5
KEY_RO W6
SPK_ R CV_ P
SPK_ R CV_ N
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C215
1000p
C214 1u
C216 1u
C217 1u
C218 1u
C219 1u
C221
1u
SDA
SCL
C220 1u
R216 20K
R218 8.2
RCV_ P
R219 8.2
RCV_ N
1
2
3
END_K EY
4
LCD_I D
5
CIF_SCL
6
CIF_SDA
7
8
9
10
11
KEY_COL0
12
KEY_COL1
13
KEY_COL2
14
KEY_COL3
15
16
SCL
17
SDA
18
19
AUDIO_I N
20
C329 21
47p
R620 22
0
23
C331
27p 24
0 R621
25
C332
47p
S
VB AT
VB AT
C211 1u
C212 1u C213 1u
A4
C1N
A5 A1
HSO_R
C1P HPR
A2
HSO_L
HPL
D1
INA2
D2
INA1
U200
C1
MAX9877A EWP_ TG45
INB2
C2 D5
INB1 OUT+
B2 B5
BIAS OUT-
B3
SDA
C3
SCL
D4
RXIN+
B4
RXIN- C226 C227
27p 27p
L100
SPK_ R CV_ P
100nH
C100
100p
L101
SPK_ R CV_ N
100nH
C102
47p
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5. TROUBLE SHOOTING
SPK_ R CV_ P
SPK_ R CV_ N
SPK100
1
2
C103
47p
VA100 VA101
EVLC18S0201 5 EVLC18S0201 5
LGE Internal Use Only