Document # 720004-0000
March 2, 2022
16
Technicians Manual
2.2.2 Serial Interface Connection pin-out
The table below describes the connection pin-out for the Serial interface (12-pin: “Molex” type),
(Applies to PayCheck
™
& PayCheck 2
™
only)
Pin
Signal Name
Printer I/O
Host I/O
Printer
Function
1
24V
Power Input
n/a
Power Input
2
PRT_RS232_TXD
Output
Input
Data transmit
3
PRT_RS232_RXD
Input
Output
Data receive
4
n/a
No connect
n/a
None
5
Signal Ground
Signal Ground
Signal Ground Signal Ground
6
RS232_DSR
4K7 pull up to 24V
Input
Printer Ready
7
n/a
No connect
n/a
none
8
PRT_RS232_RTS
(host CTS)
Output
Input
Handshake
9
Bezel pwm
24V Output
n/a
Bezel driver
10
Signal Ground
Signal Ground
Signal Ground Signal Ground
11
Signal Ground
Signal Ground
Signal Ground Signal Ground
12
24V
Power Input
n/a
Power Input
Shell Frame Ground
Frame Ground
Frame
Ground
Shield
Note: Bezel illumination control jumper must be present for Bezel modulation to be present on pin 9
Table 8: RS-232 Serial Interface Pin-Out
2.2.3 Illuminated bezel interface
The table below describes the connection pin-out for the front Bezel Connector (3-pin “Molex”
type).
Pin
Signal
Printer I/O
1
Bezel PWM
Output
2
24VDC
Output
3
GND
GND
Table 9: Bezel Interface
