DJM-400
12
1
2
3
4
1
2
3
4
C
D
F
A
B
E
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
3.1.1 OVERALL BLOCK DIAGRAM
ch-A
ch-B
2
3
31
35
23
27
31
35
23
27
5
7
11
15
5
7
11
15
19
19
17
17
7
6
IC502
NJM2121M
IC901 (1/2)
BA4560F
CN502
CN901
PHONO
/LINE
RIAA
Trim
CD
1
ch-A
ch-B
2
3
7
6
IC504
NJM2121M
IC500
BA4560F
PHONO
/LINE
RIAA
CD
2
JA508
PHONES
JA2000
JA509
JACK ASSY (1/2)
B
HP ASSY
C
MAIN ASSY
A
VRSW ASSY
E
FADER ASSY
G
CFVR ASSY
H
ch-A
ch-B
2
3
8
6
8
6
7
9
1
3
7
9
1
3
6
6
12
12
7
6
IC800
NJM2121M
S1201
J801
CN507
J901
J1201
MIC1/AUX (L)
40 dB
JA800
ch-A
ch-B
2
3
7
6
IC801
NJM2121M
MIC2/AUX (R)
40 dB
JA801
MIC ASSY
D
CHRV ASSY
F
VRSW ASSY
E
5
3
2
1
3
2
1
5
5
5
S1202
26
22
18
16
26
22
18
16
8
CN503 (1/2)
IC902 (1/2)
BA4560F
Trim
3
2
1
IC903 (1/2)
BA4560F
3
2
1
IC903 (2/2)
BA4560F
5
6
7
IC711
PCM1803DB
ADC (CH-1)
IC709
K4S641632H-TC75-K
SDRAM 64M
CN703 (1/2)
CN703
(2/2)
19
8
1
CN702
3
3
CN2000
J501
2
12
91
92
94
14
18
IC712
PCM1803DB
ADC (CH-2)
2
12
2
8
IC713
PCM1803DB
ADC (MIC/AUX)
IC714
PCM1742KE
DAC (MASTER)
IC708
D607A003BRFP200
DSP
2
1
12
IC700
DYW1755
CPU
Serial
communication
(500
µ
sec)
LED (36th)
7seg (
×
3)
KEY, SW
(32th)
VR, SW (32th)
LED 7seg
2
8
IC715
PCM1742KE
DAC (PHONES)
Mute
2
1
MASTER
OUT
JA510
JACK ASSY (2/2)
B
IC507 (1/2)
NJM4580MD
IC506 (1/2)
NJM4580MD
5
6
7
5
6
7
CN503
(2/2)
Mute
IC509 (2/2)
NJM4556AD
IC508 (2/2)
NJM4558F-HT
3
2
1
3
2
1
CN511
IC501
BA4560F
3
2
1