NAD T742, Руководство по обслуживанию

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47
2 S1
1
V
SS
26
V
DD
27 S1
3 S2 26 S2
4 S3 25 S3
5 S4 24 S4
6 S5 23 S5
7 S6 22 S6
8 S7 21 S7
9 S8 20 S8
10 S9 19 S9
11 S10 18 S10
12 S11
13
GND
14
CK
15
DATA
16
RESISTER
17 S11
(L-ch)
10bit
Latch
Circuit
LEVEL SHIFT + SHIFT RESISTER
CIRCUIT
(R-ch)
10bit
Latch
Circuit
(Same
as L-ch
Circuit)
AUDIO BOARD
U302: TC9273N-004 DIGITAL BOARD
U761: 74HCT00
1 1A
2 1B
3 1Y
4 2A
5 2B
6 2Y
7 GND
14 V
CC
13 4B
12 4A
11 4Y
10 3B
9 3A
3Y 8
Interrupt Control
IR
Flash ROM
PC
ACC
B Register C Register
PSW
RAR
RAM
Stack Pointer
W
atch Dog
T
imer
ALU
PLA
Stand-by Control
CF
Clock
Generator
RC
X'tal
Bus Interface
Port 0
S100
Port 1
S101
Port 3
T
imer 0
Port 7
T
imer 1
Port 8
Base T
imer
ADC
VFD Controller
W
eak
Signal Detector
INT
O-3
Noise rejection Filter
KEY BOARD
U201: LC87F65C8A