Model 750
Series 700
Maintenance Manual
Page 18
Rev H
J1: 20-pin: Power Board (Input from OEM host machine)
The 20-pin connector is used to interface the printer to the host machine.
Pin #
Signal
Description
Parameters
1
+24VDC
Printer Voltage
1.5 A maximum
(total)
2
PGND
Printer Ground
1.5 A maximum
(total)
3
TXP
Printer Transmit
4
RXP
Printer Receive
5
COMP
Printer Common
Per RS-232C
6
MRESET\
Master Reset
Active Low Signal - Optically
Isolated
Vin(H) 13 VDC
Vin(L) 0.3 - 1.2
V @15 mA
7
TXC
Card Transmit
8
RXC
Card Receive
9
COMC
Card Common
Per RS-232C
10
+ 24 VDC
Printer Voltage
1.5 A maximum
(total)
11
PGND
Printer Ground
1.5 A maximum
(total)
12
PRNTR LMP +
Printer Lamp Voltage
13
PRNTR LMP -
Printer Lamp Return
13 VDC 150 mA NOM
(if used with SDG Lamp Board)
14
+VRESET
Reset Voltage
13 VDC
±
10% @15 mA
15
TXB
Broadcast Transmit
16
COMB
Broadcast Common
Per RS-232C
17
CARD LMP +
Card Lamp Voltage
18
CARD LMP -
Card Lamp Return
13 VDC 150 mA NOM
(if used with SDG Bezel Lamp
Board)
19
+13 VDC
Card Reader Voltage
20
CGND
Card Reader Ground
0.5 A maximum
Table 7 Power Board Interface to Host Interface, J1, Molex 15-41-7020
All connector views are shown
from the PCB component side.
