NAD T 751 - Multi-Channel and Main Board IC Block Diagrams; M62447 SP, TC9164 AN, NJM5532 Block Diagrams; Main Board and S-Video;Video Board IC Block Diagrams

43
MULTI-CHANNEL
BOARD
U605-U611: NJM5532
MAIN BOARD
U723: NJM78M56FA
S-VIDEO & VIDEO BOARD
U402-U404: BA7625
MULTI-CHANNEL
BOARD
U602: TC9164AN
42 DVDD1OUT4 41 CLK2OUT3 40 DATA3OUT2 39 LATCH4OUT1 38 DGND5AVDD 37 AGND6SWin 36 SWout7GNDS 35 SRout8SRin 34 SLout9SLin 33 Cout10GNDG 32 Rout11Cin 31 Lout12GNDR1 30 AVSS113GNDR2 29 AVSS214GNDL1 28 NC15GNDL2 27 NC16Rin 26 NC17GNDLR 25 NC18Lin 24 NC19NC 23 NC20NC 22 NC21NC
VOLUME VOLUME VOLUME VOLUME VOLUME VOLUME
MCU
I/F
O/P PORT
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
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
+ – – +
1
INPUT
3
OUTPUT
2
GND
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
U601: M62447SP