Table of Contents
Advertisement
4. TROUBLE SHOOTING
4.14 Headphone Trouble
TEST POINT
Figure 4-82.
CIRCUIT
R404
100
AUX_MIC_P
C403
0.1u
R405
100
AUX_MIC_N
R431
100
JACK_DETECT
(GPIO_9)
(GPIO_40)
HP_SRC_SEL
HP_LOUT
HP_ROUT
C401
Figure 4-83.
2V5_VMIC
2V8_VMEM
C401
C402
10u
39p
R406
4.7
R408
4.7
C406
C407
C408
C409
C410
1u
47p
1u
47p
47p
CONNECTED PORT
LOW
NC PORT
2V8_MM
HIGH
NO PORT
U403
NLAS4684FCT1G
R428
C2
C4
IN1
NO1
SND_HPLOUT
0
A2
A4
SND_HPROUT
IN2
NO2
C3
C1
COM1
NC1
AUX_OUT_L
A3
A1
AUX_OUT_R
COM2
NC2
C431
1u
Figure 4-85.
- 122 -
CN401
13
1
2
3
4
5
6
7
8
9
10
11
12
14
AUDIO PATH SWITCH
2V8_MM
U404
NLAS4684FCT1G
(GPIO_39)
R429
C2
C4
SND_SRC_SEL
IN1
NO1
CODEC_HPLOUT
0
A2
A4
CODEC_HPROUT
IN2
NO2
C3
C1
SND_HPLOUT
COM1
NC1
MIDI_HPLOUT
A3
A1
SND_HPROUT
MIDI_HPROUT
COM2
NC2
C432
1u
U404
U405
U403
U100
Figure 4-84.
R409
100
KEY_COL2
(HOOK_DETECT)
R410
100
KEY_COL3
(MP3_FF)
R411
100
KEY_COL4
(MP3_REW)
R413
100
KEY_COL5
(MP3_PLAY/PAUSE)
R414
680
KEY_ROW0
Advertisement
Table of Contents
