Star Micronics SP500 Series - Main Logic Board (Parallel Interface); Circuit Diagram

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5. Main Logic Board (Parallel Interface)
5-1. Circuit Diagram
Main Logic Board (Parallel Interface) 1/4
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
D
O D
O D
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
O D
O D
O D
O D
O D
O D
O D
O D
O D
O D
O D O
O
D O
O
D O
O
D
O D
O D
O
O
D O
O
D O
O
D O
O
D
O D D
D
D
D
D
D
D
O D
O D
O D
O
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
S
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
CS
CS
CS
CS
CS
CS
CC
CC
CC
CC
CC
CC
CC
CC
SS
SS
SS
SS
SS
SS
S
S
S
S
S
S
S
S
S
S
S
S
S
O C
O C
O C
O C
O C
O C
O C
O C
O C
O C
O C
O C
O C
O C
O C
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
C
C
C
C
C
C
C
C
C
C
C
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Release Voltage
Delay time
Operating temperature
Operating temperature
line
line
Operating temperature
Built-in RAM
Protection Timer
Protection Timer
Protection Timer
& Protection Timer
& Protection Timer
& Protection Timer