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4.11 Earphone Trouble
TEST POINT
CIRCUIT
CLOSE TO EARJACK
2V8_VMEM
C211
39p
5
4
VIN-
1
VCC
JACK_DETECT
OUT
VIN+
3
GND
2
C216
U201
39p
NCS2200SQ2T2G
Figure 4.11
2V5_JACK
R200
NA
C200
0.1u
R202
20K
AUXIN
R207
C204
NA
NA
2V8_VMEM
R212
1M
AUXOP
AUXIP
AUXIP
C213
0.1u
R215
330K
JACK_DETECT
L
REMOVE
H
INSERT
4. TROUBLE SHOOTING
2V8_VMEM
R201
2K
R203
1K
R204
0
C201
C202
10u
NA
(2125)
(2125)
C212
10u
FB200
600
R214
4.7
C219
C217
C218
R216
1M
NA
NA
NA
- 67 -
FB200
R214
J200
U201
2V8_VEXT
R205
HOOK_DET
NA
U200
1
5
STBY
NC
2
6
GND
BGND
3
4
VIN
VOUT
C206
BH25FB1WHFV
NA
(N.A)
5
1
3
4
2
J200
2V5_JACK
C205
NA
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