4-133
PCB Connector and
Signal Information
Status
Pin
No.
Signal
Name
Destination
Function
15
16
17
18
19
20
21
22
23
24
25
26
27
28
—
—
FG
PLH
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
PC printer port
Centronics
connector 15
PC printer port
Centronics
connector 16
PC printer port
Centronics
connector 17
PC printer port
Centronics
connector 18
PC printer port
Centronics
connector 19
PC printer port
Centronics
connector 20
PC printer port
Centronics
connector 21
PC printer port
Centronics
connector 22
PC printer port
Centronics
connector 23
PC printer port
Centronics
connector 24
PC printer port
Centronics
connector 25
PC printer port
Centronics
connector 26
PC printer port
Centronics
connector 27
PC printer port
Centronics
connector 28
—
—
Frame ground
Printer connection
detecting signal
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
—
—
0V
5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V