Technics SH-DV250

FW602A
DSP DIO
SP INPUT
To FL CIRCUIT(FW602B)
on SCHEMATIC DIAGRAM-2
A
SCHEMATIC DIAGRAM-4
8
234567 1
EDFCBA
DSP CK
DSP ACK
DSP RST
DSP SNS
DSP CS
A.GND
R403
680
X401
(8MHz)
R431
10K
R414
1K
C404
6.3V47
C403
0.01
R415
1K
R411
1K
R410
220
R409
220
R417
220
R408
220
R406
220
R407
220
R430
10K
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Vcc
VREF
AVss
NJ ST
ECK/ NJCK
EDA/ NJDT
DCS
SENSE
DACK
DCK
DDO
DDI
NODSW3
NODSW2
GND
SW1
ECS
RESET
XIN
X OUT
A
B
INH
EXP26
DO
CK
CS2
RST2
CS1
RST1
EXP27
EXP11
EXP12
EXP13
EXP14
EXP15
EXP16
EXP17
Vss EXP18
41
42
C401
0.022
R404
100K
R405
220
C402
0.01
L401
D
A
B
C
E
F
R425
4.7K
R426
4.7K
R429
4.7K
R424
1K
R421
100
R420
1K
R419
1K
R432
1K
AB
A
B
C
A
B
C
H
D
C
O
F
E
D
IC401
C2BBFD000246
SYSTEM CONTROL
R402
100K
R401
4.7K
1
2
3
E
R903
120K
IC281,282
NJM4558MTE1
BUFFER AMP
R284
13K
C280
33P
R289
18K
R290
18K
C286
33P
C288
16V10
R297
470
C284
0.01
C290
0.01
4321
8 7 6 5
4321
8 7 6 5
R291
18K
C287
33P
R288
18K
R285
13K
C281
33P
C282
1000P
R286
22K
R282
56K
R287
22K
R292
82K
R293
82K
IC282
IC281
C285
0.01
C291
0.01
C289
16V10
R298
470
R280
56K
R281 56K R283 56K
D
C
B
A
MN
A
B
C283
1000P
E
:POSITIVE VOLTAGE LINE
5.1V
0V
5V
5V
5V
5V
5V
0V
4.8V
0V
5V
5V
5.1V
5.1V
0V
0V
0V
4.6V
0V
4.8V
0V
0V
0V
5V
4.8V
2.2V
2.2V
0V
1.9V
P
- P
F=4MHz
1.7V
P - P
F=4MHz
:CD PLAYBACK SIGNAL LINE:NEGATIVE VOLTAGE LINE
0V 0V - 10.4V
0V 0V9.4V
0V 0V - 10.4V
0V 0V9.4V