Marantz SR-4001, Service Manual

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74
IC56 : NJM2584MTE1
IC57 : NJM2584MTE1
IN1A
IN2B
IN3B
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IN1B
IN2A
IN3A
OUT1
OUT2
OUT3
NC
CTL
NC
GND1
GND2
GND3
V+
BIAS
CLAMP
BIAS
PIN MODE NOTES
H B channel output
L A channel output
Control
OPEN A channel output
IC58 : NJM2586AMTE1
9
10
8
5
6
7
4
3
2
1
11
12
13
16
15
14
17
18
19
20
21
22
23
24 CH1 IN1
CH1 IN3
CH1 IN2
SW1
SW2
GND
CH1 OUT
V
-
1
CH2 OUT
CH3 IN2
CH3 IN3
V
+
2
CH2 IN3
CH2 IN1
CH3 OUT
CH3 IN1
GND
CH2 IN2
GND
PS
75
Driver
Bias
Cont2
Cont1
Cont1
Cont2
Cont1
Cont2
6dB
Amp
Bias
Bias
Bias
Bias
Bias
Bias
Bias
75
Driver
75
Driver
Bias
6dB
Amp
6dB
Amp
GND GND
V
+
1
V
-
2
PARAMETER STATUS NOTE
H Power Save: OFF
L Power Save: ON
PS
OPEN Power Save: ON
STATUS
PARAMETER
SW1 SW2
NOTE
L, OPEN X IN1 (X=don't care)
H L, OPEN IN2
SW1, SW2l
H H IN3