Lexmark X7500 - MFP - Option Service Manual page 141

4036-501
The following table shows the signal names for this board.
Signal name
*HAIHAN K
*HAIHAN
*REGI2
REGI2 A
*REGI1 K
*REGI1
*READ
*READ K
*KMOT CK
Description
LED return of the DADF exit/reverse sensor.
Detects whether paper exists or not.
Sensor output < Threshold: paper exists.
Sensor output > Threshold: no paper exists.
Detects top of paper.
5V=Top of paper is detected.
0V=Top of paper is not detected.
Supplies the power from 5V terminal through the current limiter
for the LED of the DADF pre-registration 2 sensor (photo-
transistor type). Normally on.
LED return of the DADF pre-registration 1 sensor.
Detects which paper exists or not.
Sensor output < Threshold: paper exists.
Sensor output > Threshold: no paper exist.
Detects which paper exists or not.
Sensor output < Threshold: paper exists.
Sensor output > Threshold: no paper exist.
LED return of the DADF registration sensor.
The hole of the rotating disk goes to be low level.
5-15
Connector Locations