LG KG200 Service Manual - Page 33
LS203 - driver
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4. Troubleshooting Components in Metal Can Speaker Driver (Boomer) P.1 MP3_OUTR P.1 MP3_OUTL C237 100nF C0402 C234 100nF C0402 R212 R217 20K R0402 N.C. (20K) R0402 P.1 GPIO1_OP_EN SpeakerOnO/ff Cnotorl C239 N.C. (22p) C0402 R213 43K R0402 R214 100K R0402 U200 A1 -IN C2 Vo2(+) A3 +IN Vo1(-) A2 1uF C1 C241 BYPASS C0402 C3 VDD GND1 /SHUTDOWN GND0 B3 B2 B1 LM4990AFCT2G NCP2890-D On-semi NCP2890 SPK+ SPKVBAT C238 2u2F C0603 Close to loud speaker! U206A CM1416 A1 CM1416 C243 N.C. (100pF) C0402 B2 U206B CM1416 A3 CM1416 Louder Speaker C1 LS203 SPK1P DMS1608F-06-F2-G P30-02B1-00 SPK1N 1 21 ESD211 ESD212 E201 C3 ESD ESD P55-02B1-01 AS501C-A0G1E 2 21 1 2 B2 E201 LS203 C238 U200 - 34 -
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4. Troubleshooting
- 34 -
CM1416
U206A
CM1416
A1
B2
C1
CM1416
U206B
CM1416
A3
B2
C3
GPIO1_OP_EN
P.1
MP3_OUTR
P.1
MP3_OUTL
P.1
On-semi NCP2890
C234
100nF
C0402
C237
100nF
C0402
R217
N.C. (20K)
R0402
R212
20K
R0402
C239
N.C. (22p)
C0402
C238
2u2F
C0603
C241
1uF
C0402
R213
43K
R0402
U200
LM4990AFCT2G
NCP2890-D
/SHUTDOWN
C3
BYPASS
C1
+IN
A3
-IN
A1
Vo1(-)
A2
VDD
B3
GND0
B1
Vo2(+)
C2
GND1
B2
R214
100K
R0402
C243
N.C. (100pF)
C0402
ESD211
ESD
1
1
2
2
ESD212
ESD
1
1
2
2
SPK1P
Speaker Driver (Boomer)
SPK+
LS203
DMS1608F-06-F2-G
P30-02B1-00
SPK1N
Close to loud speaker!
Components in Metal Can
SPK-
Louder Speaker
VBAT
E201
P55-02B1-01
AS501C-A0G1E
Speaker
On/
Off Co
ntr
ol
E201
LS203
C238
U200