NAD T 163 Service Manual page 37

HCF4094B
KEYBOARD: U204~U207, U211
DSP BOARD: U1029
SERIAL
2
IN
CL
CL
CLOCK 3 CL
CL
1 CL
STROBE
CL
OUTPUT
15
ENABLE
V DD
V SS
PT6306
KEYBOARD: U203
44
PCB
45
BK
43
LATB
37
RDIO RDIO
36
LDIO LDIO
DIRECTION
CONTROL
UNIT
41
DIR DIR
38
CLKB
VDD2 02
31
50
79
VSS2 05
34
47
76
D Q D Q
1 2
CL
CL
p n
TL TL
TL
p
TR
n
LATCH
2
TL
TR
LATCH 1
3-
3-STATE
STATE
1
2
p n
V DD V SS
2 2
Q1 Q2
RDIN SQ1
RDOUT
LDIN
LDOUT
SHIFT
UNIT
DIR
CLK SQ64
D Q
3
CL
CL Q
TR
LATCH
STAGES
3 - 7
TR
STATE
2 2 2 2 2
Q3 Q4 Q5 Q6 Q7
G QB1
LATCH
UNIT
QB23
G QB24
LATCH
UNIT
QB41
G QB42
LATCH
UNIT
QB64
37
CL
Q'
S
p
SERIAL
10
n
OUT
CL
CL
p
n
CL
Q
S
SERIAL
9
OUT
3
3-
3
2
Q8
51
HVO1
73 HVO23
82
HVO24
99
HVO41
08
HVO42
30 HVO64