DS-90/90A
Feb. 2000
11
CIRCUIT DIAGRAM (ANALOG SHEET)
INPUT LEVEL
LF TRIM
Analog/Digital
HF OUT
LF OUT
HOT
COLD
Frame Ground
HF TRIM
TO DA BOARD
CN3
TO SPEAKER
Non-Flame Type
Non-Flame Type
Non-Flame Type
Non-Flame Type
Non-Flame Type
Non-Flame Type
Non-Flame Type
Non-Flame Type
4700p/250V
F1
TO DA BOARD CN1
Frame Ground
Wiring
HEAD AMP BOARD
(Mute Section)
INLET Board
POWER AMP BOARD
(Power Supply Section)
POWER AMP BOARD
POWER AMP BOARD
POWER AMP BOARD
(Low Freq. Amp Section)
(High Freq. Amp Section)
(New) NCJ9FI-H
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
+15V
-15V
A+5V
A+5V
Frame Ground
10kHz -4.0dB m 489mV
1kHz 0dBm 775mV
1kHz 0dBm 775mV
10kHz -4.0dB m 489mV
1kHz +0.7 dBm
840mV
10kHz -4.0dB m 489mV
1kHz +0.7 dBm
840mV
1kHz +25 dBm
13.8V @4ohm
10kHz -7dBm
346mV
10kHz +25 .5dBm
14.6V @8ohm
+25V
-25V
+25V
-25V
+25V
-25V
+ 15
+ 15
- 15
- 15
+ 15
- 15
A
A
A
A
A
A
A
A
A
A
- 15
+ 15
+ 15
- 15
A
+ 15
- 15
+ 15
- 15
A
A
A
+ 15
- 15
A
A
A
A
A
+ 15
- 15
A
A
A
A
A
A
A
+ 15
- 15
A
A
A
A
A
+ 15
- 15
A
A
A
A
A
A
- 15
+5
A
A
A
A
+ 15
+ 15
A
A
+5
A
A
+ 15
A
- 15
- 15
A
A
A
A
A
A
A
- 15
A
+ 15
+ 15
A
A
SW1B
SSSF120500
21
23
22
Q28
2SC2240GR
3
1
2
Q32
2SC2240GR
3
1
2
Q31
2SC2240GR
3
1
2
Q29
2SC2240GR
3
1
2
Q30
2SC2240GR
3
1
2
R106
10k
R105
10k
R108
10k
R103
470k
R95
47
R83
10k
R85
56k
R93
10k
R82
10k
R90
12k
R92
10k
R88
12k
R80
10k
R84
10k
R98
10k
R111
10k
R102
10k
R94
10k
R91
10k
C42
0.15
C38
0.15
C37
0.0039
C34
0.0039
C36
0.0039
C33
0.0039
C52
0.0047
C56
0.0039
C35
0.0039
R86
12k
R89
12k
C51
0.0047
C44
0.0047
IC6A
TL072CP
+
-
2
3
1
IC6B
TL072CP
+
-
6
5
7
IC6C
TL072CP
+
-
8
4
R113
180k
R110
100k
R109
180k
R115
47k
R101
10k
R114
10k
C55
0.18
C54
0.18
C46
0.22
R116
22k
IC7C
TL072CP
+
-
8
4
IC7B
TL072CP
+
-
6
5
7
R96
47
C47
0.22
VR1A
RK11K1120A0A
10kA
1
2
3
4
VR2A
RK11K112002F
50kB CC
1
2
3
4
C57
10/35
C49
10/35
C41
10/35
C43
10/35
C45
0.0047
SW1A
SSSF120500
11
13
12
R107 180k
R104
10k
IC7A
TL072CP
+
-
2
3
1
R100
180k
R112
10k
C58
0.047
R87
10k
CN5
S5B-PH-K-S
1
1
2
2
3
3
4
4
5
5
C53
0.47
Q19
2SC2240GR
3
1
2
Q16
2SC2240GR
3
1
2
Q14
2SA970GR
3
2
1
Q11
2SA1145Y
3
2
1
Q10
2SC3421Y
3
1
2
Q6
2SC3421Y
3
1
2
Q9
2SA1358Y
3
2
1
Q22
2SC2878A
3
1
2
R63
22k
R59
4.7k
R53
4.7k
R58
1.2k
R49
1.2k
R47
1.2k
R60
470
R56
27k
R43
4.7k
R40
27k
R32
390
R34
2.7k
R33
2.7k
R29
390
R18
6.8k
R20
3.9k
R31
22k
R35
22k
R67
10k
R42
22k
R21
8.2k
R16
100 (1/2W)
R12
100 (1/2W)
C2
0.022
C7
0.022
C15
0.22
C22
220p
R22
22k
D5
1SS133
1
2
R17 33 (1/2W)
R8
4.7 (1/2W)
R3
4.7 (1/2W)
R19
33 (1/2W)
IC2A
TL072CP
+
-
2
3
1
IC2B
TL072CP
+
-
6
5
7
IC2C
TL072CP
+
-
8
4
C13
1000/35
C12
1000/35
C16
0.1
C11
0.1
R5
SQT5W
0.33
R4
SQT5W
0.33
R15
27 (1/2W)
R39
4.7k
Q12
2SC2705Y
3
1
2
R50
4.7k
Q3
2SC4386
1
3
2
CN1
B4P-VH
1
1
2
2
3
3
4
4
Q4
2SA1671
1
2
3
CN4
5P-SAN
1
1
2
2
3
3
4
4
5
5
Q23
2SC2240GR
3
1
2
Q20
2SC2240GR
3
1
2
Q24
2SA970GR
3
2
1
Q17
2SA970GR
3
2
1
Q15
2SA1145Y
3
2
1
Q8
2SC3421Y
3
1
2
Q5
2SC3421Y
3
1
2
Q13
2SC2705Y
3
1
2
Q7
2SA1358Y
3
2
1
Q27
2SC2878A
3
1
2
R74
22k
R71
4.7k
R61
4.7k
R73
470
R64
470
R57
470
R76
470
R68
27k
R55
4.7k
R52
4.7k
R51
27k
R44
390
R41
2.7k
R36
2.7k
R38
390
R23
6.8k
R26
3.9k
R28
22k
R30
22k
R79
10k
R45
22k
R24
8.2k
R48
4.7k
R27
68k
R10
100 (1/2W)
R9
100 (1/2W)
R1
SQT5W
0.33
R2
SQT5W
0.33
C6
0.022
C5
0.022
C24
220p
C14
0.22
R13
33 (1/2W)
R6
4.7 (1/2W)
R7
4.7 (1/2W)
R11 33 (1/2W)
IC1A
TL072CP
+
-
2
3
1
IC1B
TL072CP
+
-
6
5
7
IC1C
TL072CP
+
-
8
4
C4
1000/35
C3
1000/35
C17
0.1
C10
0.1
R14
27 (1/2W)
R37
10k
Q1
2SC4386
1
3
2
Q2
2SA1671
1
2
3
R25 220k
D7
1SS133
1
2
C28
0.47
TER8
FASTEN
1
TER5
FASTEN
1
TER4
FASTEN
1
TER7
FASTEN
1
JK1
PWI-1818
2
1
FH2
HTF-015
FH1
HTF-015
C50
PY17FY
TER6
FASTEN
1
IC4 NJM7815FA
IN
1
OUT
3
GND
2
IC5 NJM7805FA
IN
1
OUT
3
COM
2
IC3 NJM7915FA
IN
2
OUT
3
COM
1
D2
CP1002
+
-
~
~
2
3
1
4
D9
1N4004G
1
2
D8
1N4004G
1
2
C19
0.1
C18
0.1
C1
EC8472MH
472/250
C21
100/35
C9
10000/35
C8
10000/35
C27
100/35
TER3
FASTEN
1
TER1
FASTEN
1
TER2
FASTEN
1
C26
2200/25
C30
0.1
R46 SQP5W (7W)
82
D3
1N4004G
1
2
D1
1N4004G
1
2
CN3
6P-SAN
1
1
2
2
3
3
4
4
5
5
6
6
R75
100k
C23
10/35
R66
47k
R65
100k
R69
47k
Q26
2SC1815GR
3
1
2
R70
100
R77
47k
Q25
2SA1015GR
3
2
1
R72
47k
C29
47/35
R78
100k
Q21
2SC1815GR
3
1
2
C25
0.22
CN6
S4B-PH-K-S
1
1
2
2
3
3
4
4
R81
470k
C48
0.047
JK2
(Old) NCJ9FK-H
TS
T
RS
R
SS
S
FG
2
3
1
4
5
6
7
8
9
10
VR3A
RK11K112002K
10kB CC
1
2
3
4
D6
1SS133
1
2
D4
1SS133
1
2
C40
10/35
R97
470k
C32
10/35
R99
10k
C31
10/35
C59
0.1
C39
10/35
C20
100/35
Q18
2SA970GR
3
2
1
R54
1.2k
R62
470
