Marantz PM7000N Service Manual page 31

NJU72750A (MAIN : IC701, IC707)
32
1
Pin Function
No. Symbol Function
1 V+ positive power supply terminal
2 InA1 Ach input1
3 InB1 Bch input1
4 InA2 Ach input2
5 InB2 Bch input2
6 InA3 Ach input3
7 InB3 Bch input3
8 InA4 Ach input4
9 InB4 Bch input4
10 InA5 Ach input5
11 InB5 Bch input5
12 InA6 Ach input6
13 InB6 Bch input6
14 InA7 Ach input7
15 InB7 Bch input7
16 REF Reference potential terminal for BIAS
NJU72322 (MAIN : IC702)
32
1
Pin Function
No. Symbol Function
1 NC -
2 L_CAP Lch Vol control switching noise removal capacitor
3 OUTL Lch output
4 L- Lch OP AMP inverting input
5 L_REF Lch reference potential terminal
6 L+ Lch OP AMP non-inverting input
7 L_REF Lch reference potential terminal
8 L_REF Lch reference potential terminal
9 R_REF Rch reference potential terminal
10 R_REF Rch reference potential terminal
11 R+ Rch OP AMP non-inverting input
12 R_REF Rch reference potential terminal
13 R- Rch OP AMP inverting input
14 OUTR Rch output
15 R_CAP Rch Vol control switching noise removal capacitor
16 D_IN Digital supply voltage terminal
17
16
No. Symbol Function
17 DATA IC control data input
18 CLOCK IC control clock input
19 NC -
20 NC -
21 OutB3 Bch output3
22 OutA3 Ach output3
23 REF_B Bch reference potential terminal
24 OutB2 Bch output2
25 OutA2 Ach output2
26 REF_A Ach reference potential terminal
27 OutB1 Bch output1
28 OutA1 Ach output1
29 NC -
30 ADR0 Address selection pin 0
31 ADR1 Address selection pin 1
32 V- negative power supply terminal
17
16
No. Symbol Function
17 NC -
18 DATA IC control data input
19 CLOCK IC control clock input
20 LATCH IC Control latch input
21 D_V+ + Power supply [Digital control]
22 INR Rch input
23 AR_V+ + Power supply [Rch]
24 AL_V+ + Power supply [Lch]
25 AR_V- - Power supply [Rch]
26 AL_V- - Power supply [Lch]
27 INL Lch input
28 D_V- - Power supply [Digital control]
29 D_CAP Digital part stabilization capacitor
30 ADR0 Address selection pin
31 NC -
32 D_REF Reference terminal for control
SSC3S121 (SMPS : IC1800)
BLOCK DIAGRAM
VCC
7
UVLO
BR
2
PWM OSC
VREG
FB/OLP
1
Pin Function
No. Symbol Function
Constant voltage control signal input /Overload
1 FB/OLP
protection signal input
2 BR AC voltage detection terminal
3 ― Non
4 ST Start-up current input
31
FB/OLP 1 8 GND
BR 2 7 VCC
3 6 OCP
4
ST 5 DRV
ST
Startup 4
REG VREG OVP TSD
Brown-in/out,
HVP
DRV
5
DRV
S Q
R
OCP
Drain peak current
VCC
compensation
OCP
OLP Feedback LEB 6
control
GND
Slope
8
compensation
No. Symbol Function
5 DRV Gate drive output
Current mode control signal input /Overcurrent
6 OCP
detection signal input
Control circuit power input /Overvoltage
7 VCC
protection signal input
8 GND Ground