Lexmark C752 Service Manual page 305

See "System board - non-network" on page 5-6
Connector
J12 Printhead - Black/Magenta Video
J13 Printhead - Black Mirror Motor
or "System board - network" on page
Pin no. Signal
1 K_DATA+
2 Ground
3 K_DATA-
4 M_THERMISTOR
5 Ground
6 M_LENA
7 +5 V dc (through fuse F12 and safety switches at
J10)
8 Ground
9 K_LPWM
10 M_LADJ
11 Ground
12 Ground
13 K_LADJ
14 M_LPWM
15 Ground
16 +5 V dc (through fuse F12 and safety switches at
J10)
17 K_LENA
18 Ground
19 K_THERMISTOR
20 M_DATA-
21 Ground
22 M_DATA+
1 FUSE24V
2 Ground
3 Ground
4 +5 V dc (through fuse F12)
5 K_MMSTART
6 K_HSYN-SOS
7 K_MMLOCK
8 Ground
9 K_MMREF
10 N/C
5060-2XX
5-7.
5-11
Connector locations