NAD T 761 - Multi-Channel & S-Video;Video IC Block Diagrams

1
INPUT
3
OUTPUT
2
GND
49
DIGITAL OUT BOARD
U761,U762: 74HCT00
11A
21B
31Y
42A
52B
62Y
7GND
14 V
CC
13 4B
12 4A
11 4Y
10 3B
93A
3Y8
MULTI-CHANNEL BOARD
U601: M62446FP
1OUT4 42 DVDD
2OUT3 41 CLK
3OUT2 40 DATA
4OUT1 39 LATCH
5AVDD 38 DGND
6SWin 37 AGND
7GNDS 36 SWout
8SRin 35 SRout
9SLin 34 SLout
10GNDC 33 Cout
11Cin 32 Rout
12GNDR 31 Lout
13Rin 30 AVSS
14GNDL 29 CL1
15Lin 28 CL2
16BYPASSR 27 CR1
17BYPASSL 26 CR2
18LTRE 25 RTRE
19LBASS3 24 RBASS3
20LBASS2 23 RBASS2
21LBASS1 22 RBASS1
OUT-
PUT
PORT
MCU
I/F
volume
volume
volume
volume
volume
volume
tone tone
MULTI-CHANNEL BOARD
U605-U607, U609-U611: NJM5532
AMPLIFIER 1
OUTPUT
INVERTING
INPUT
NON-INVERTING
INPUT
V –
AMPLIFIER 2
V +
OUTPUT
INVERTING
INPUT
NON-INVERTING
INPUT
1
2
3
4
8
7
6
5
+ – – +
S-VIDEO & VIDEO BOARD
U402-U404: BA7625
1MONITOR OUT 16 IN1
2GND 15 CTL A
3IN5 14 VOUT1
4GND 13 VCC
5IN4 12 IN2
6CTL E 11 CTL B
7INT3 10 VOUT 2
8CTL D 9 CTL C
6dB
LOGIC
LOGIC
6dB
MULTI-CHANNEL BOARD
U602: TC9164AN
1
2L-S1
VSS
SHIFT REGISTER
LEVEL SHIFTER LEVEL SHIFTER
LATCH CIRCUIT LATCH CIRCUIT
14
GND
28
VDD
27 R-S1
3L-S2 26 R-S2
4L-S3 25 R-S3
5L-S4 24 R-S4
6L-COM1 23 R-COM1
7L-S5 22 R-S5
8L-S6 21 R-S6
9L-COM2 20 R-COM2
10L-S7 19 R-S7
11L-S8 18 R-S8
12L-COM3 17 R-COM3
13L-ST 16 DATA
15 CK
MAIN BOARD
U723: NJM78M56FA