Lexmark X642e Service Manual page 413

Operator panel card connector pins—model X642e (continued)
Connector
J10 to J15 on scanner control card (continued)
J12 to touchscreen display
J14
J15
J18 to CN1 on LCD inverter card
CN pin no. Signal
13 NC TX2-
14 NC TX2+
15 NC TXI-
16 NC TXI+
17 MASTER RESET N
18 Ground
1–32 Signal
1 +5 V dc IN
2 BUTTON ADMIN (+5 V dc default,
ground when pushed)
3 Ground
4 V (contrast wheel output)
o
5 V (contrast wheel output)
o
6 Ground
7 V ± 24 V dc
EE
8 V ± 24 V dc
EE
1 +5 V dc IN
2 BUTTON HOME
3 BUTTON HELP (+5 V dc default,
ground when push Go)
4 Ground
1 +5 V dc BACKLIGHT CONTROL
2 Ground
Locations and connections
7002-xxx
5-13