Service manual

DG100-212
12
IC BLOCK DIAGRAM
Q
DCK
OE
Q
DCK
OE
Q
DCK
OE
Q
DCK
OE
OUTPUT
CONTROL
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
TCHCU04AF-TP1(XD660A00)
Hex Inverter
SN74HC08NSR (XD831A00)
Quad 2 Input AND
1
2
3
1A
1Y
42A
52B
62Y
7VSS
1B
14
13
12
VDD
4A
11 4Y
10 3B
93A
83Y
4B
1
2
3
A
QA QA
4QB QB
5QC QC
6QD QD
7GND
BB
14
13
12
VCC
QGQG
11 QFQF
10 QEQE
9 CLEARCLEAR
8 CLOCK
QH
CK
QH
1
2
3
1A
1Y
42A
52B
62Y
7GND
1B
14
13
12
Vcc
4A
11 4Y
10 3B
93A
83Y
4B
TC74VHC32F (XN963A00)
Quad 2 Input OR
SN74HC244NSR ( XD233A00 )
Octal 3-State Bus Buffer
TC74HC157AF-TP1 ( XH603A00 )
Quad 2 to 1 Multiplexer
TC74HC175AF -TP1(XD658A00)
Quad D-Type Flip-Flop
TC74HC4040F (XR684A00)
12-Stage Binary Ripple Counter
TC74HC164AF (XQ967A00)
8-Bit Shift Register
SN74HC374ANSR ( XQ042A00 )
Octal 3-State D-Type Flip-Flop
Vcc
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
Q
DCK
OE
Q
DCK
OE
CK
Q
DCK
OE
Q
DCK
OE
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
VDD (Vcc)
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1(GND) Vss
QCL
QD
CK
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
QCL
QD
CK
QCL
QD
CK
QCL
QD
CK
1
2
3
4
5
6
7
CL
1Q
1Q
1D
2D
2Q
2Q
16
15
14
13
12
11
10
VDD
4Q
4Q
4D
3D
3Q
3Q
8
Vss
9
CK
OUTPUTS
OUTPUTS
SIRIAL
INPUT
A
A
1
2
3
4
5
6
7
SELECT
1A 1A
1B 1B
1Y 1Y
2A 2A
2B 2B
2Y 2Y
16
15
14
13
12
11
10
Vcc
STROBEG
4A
S3Y
4A
4B4B
4Y4Y
3A3A
3B3B
8
GND
9
3Y
1
2
3
4
5
6
7
Q12 Q12
Q6 Q6
Q5 Q5
Q7 Q7
Q4 Q4
Q3 Q3
Q2 Q2
16
15
14
13
12
11
10
VDD
Q11Q11
Q10Q10
Q8Q8
Q9Q9
CLRCL
Input Pulses ( )
8
Vss
9
Q1Q1