Lexmark 2390 003 - B/W Dot-matrix Printer Service Manual page 157

Sub Logic Board (238X-002, 003) <--> Head Gap Pos 1 to 2
Pin 1
Pin 2
Sub Logic Board (238X-002, 003) <--> Head Gap Pos 3 to 4
Pin 1
Pin 2
Sub Logic Board <--> Paper Select Sensor
Pin 1
Pin 2
Sub Logic Board <--> Home Position Sensor
Pin 1
Pin 2
CN3
SIGNAL GND
GS2
CN4
+5 V
GS1
CN5
F/T
SIGNAL GND
CN6
HP
SIGNAL GND
Connector Locations 5-17