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KG225
Service manual
Earphone Trouble - LG KG225 Service Manual
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User manual
(229 pages)
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(225 pages)
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Table of Contents
Troubleshooting
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4.11 Earphone Trouble
TEST POINT
C208
CIRCUIT DIAGRAM
CLOSE TO EARJACK
AUXIN
2V8_VEXT
C207
39p
5
1
VCC
JACK_DETECT
OUT
GND
U201
2
LMV7291MGX-NOPB
JACK_DETECT
L
REMOVE
H
INSERT
R206
U201
Figure 20
R200
1K
R201
C201
20K
0.1u
C202
C206
R204
NA
39p
NA
2V8_VEXT
R205
1M
AUXOP
4
VIN-
AUXIP
AUXIP
3
VIN+
C209 0.1u
R208
330K
- 65 -
4. TROUBLE SHOOTING
J200
2V5_JACK
R202
1.5K
R203
0
HOOK_DET
C203
22u
C208
10u
R206
4.7
R207
4.7
2V8_VEXT
2V5_JACK
U202
1
4
GND
NC
2
3
Vin
VOUT
C216
NCP563Q25T1
C217
1u
1u
5
1
3
4
2
J200
C212
39p
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