Samsung SER-6500 Service Manual page 69

11 Operation and Description for each part of the Circuit
74HCT164
INPUT
CLEAR\ = CLOCK A B
L X X X
H L x X
H tT H H
H t L X
H t X L
1A VCC INPUT OUTPUT
1B 4B A B Y
lY 4A 4
2A 4Y H H L
2B 3B L X H
2Y 3A X L H
GND
3Y
Ds eer oes
VCC OUTPUT
AY
4B
4A
3Y
3B
3A
SN75518
VCC2 1 VCC CS\ VCC
OUT 2 DI WR\ AO
Q32 3 Ql RD\ INTA\
Q31 4 Q2 D7 1R7
Q30 5 Q3 D6 IR6
Q29 6 a4 D5 IR5
Q28 7 Q5 D4 TR4
Q27 8 Q6 D3 IR3
026 Q7 D2 IR2
Q25 Q8 D1 IR1
024 Qg DO 1RO
Q23 Q10 CASO INT
Q22 Qll CAS] SP/EN\
Q21 Qi2 GND CAS2
a20 Q13
Qqig Q14
Q18 Qis
Q17 Qi6
STR LE
GND CLOCK
11-12 Samsung SER-6500 / SER-6540 / SER-6540F