Service manual

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Custom
88Wednesday, May 21, 2003
Title
Size Document Number Rev
Date: Sheet
of
VCC VCC
VCC
VCC
GND
GND
GND
AUD_OFF3
AUDIO-ADJ2
Left_outp
VCC_AU
Right_Outp
Right_Outp
AUD4835_DCVOL
Left_outp
AUD4835_SD
Right_outm
Left_Outm
Left_Outm
Right_outm
AUD4835_DCVOL
LEFTIN
RIGHTIN
JP5
BASE2-180°
1
2
JP6
BASE2-180°
1
2
R109
10K
C129 1UF
R114
20K
CN15
BASE2S
1
2
C128 1UF
R110
20K
U21
NS4838&APA4835A
1 8 14 20 23
6 16 27
2
3
4
5
7
9
10
11
12
13
28
26
25 24 22
21
19 18
17
15
29
GND GND GND GND GND
VDD VDD VDD
Shutdown
Gain Select
Mode
Mute
DC_Vol
Right Dock
Right In
Beep In
Lift In
Left Dock
Right Out+
Right Out-
Right Gain2 Right Gain1 Bypass
HP Sense
Lift Gain1 Lift Gain2
Lift out -
Lift out +
GND
R112
NP
R117
20K
C124
47uF/16V
12
R120
20K
C131
1UF
R122
33K
R121
20K
C127
0.0068UF
R113
20K
R111
33K
R119
10K
C125
0.1uF
R116 20K
R115 20K
C126
0.1uF
C130
0.0068UF
CN12
BASE2S
1
2
L28
BE0805
1 2
R118 10K
PA3
SCJ-0356M5(B)
1
2
3
4
5
C146
33p
R125 4.7K
C145
33p
EC37
22uF/16V
R124
1K
C148
33p
C147
33p
R123
4.7K
Q5
2N3904
3
1
2
C132
0.1uF
L-OUT
LOW SP OUT
DEL L17
MODE HPS
DEL R86
DEL R89
DEL L15
1
R-OUT
HI HP OUT
MUTE
DEL C134
HI SHUTDOWN
00
MODE GND OP MAX
SDWN
MODE VCC OP VOL
GAIN
01
Mute Hi is Mute
Shoutdown Hi is Shoutdown
Gain Hi is Gain on
L-OUT
R-OUT
5/18 追加
5/18 追加
5/18 修改