Lexmark C752 Service Manual page 307

See "System board - non-network" on page 5-6
Connector
J15 Transfer HVPS
J16 Option DRAM Socket
J17 Not Used
J18 Parallel Port
J19 Not Used
J20 ITU/TPS Autoconnect
or "System board - network" on page
Pin no. Signal
1 ITU_TX_ENA_OUT (active low)
2 ITU_TX_CUR_PWM_OUT
3 ITU_SERVO_IN
4 ITU_TX_PWM_OUT
5 CMY_TX_ENA_OUT (active low)
6 K_SERVO_IN
7 K_TX_PWM_OUT
8 C_SERVO_IN
9 C_TX_PWM_OUT
10 M_SERVO_IN
11 Y_TX_PWM_OUT
12 Y_SERVO_IN
13 M_TX_PWM_OUT
14 Ground
15 +24V_SWITCHED
16 N/C
1 N/C
2 ITU_I2C_DATA
3 +3.3V dc (Through fuse F13)
4 TPS_GAIN_OUT
5 ITU_TEMP
6 BELT_HOLE 1 N/C
7 Ground
8 Ground
9 ITU_I2C_CLK
10 +24V_SWITCHED
11 TPS_LED_ON_OUT
12 TONER_PATCH_OUT
13 N/C
14 BELT_HOLE 2
15 +5V_SWITCHED
5060-2XX
5-7.
5-13
Connector locations