Xerox WorkCentre 5022 Service Manual page 181

2.2.4.1 Reflective Sensor Failure FIP
Procedure
Enter DC330[XXXX-XXX]. Block the sensor with a sheet of blank paper. Is [LOW] dis-
played?
Y N
Is +5VDC measured between the sensor pin-2 (+) and the GND (-)?
Y N
Check the connection between the sensor pin-2 and the PWB pin-8 for an open cir-
cuit and poor contact.
If no problem is found, replace the PWB.
Is +5VDC measured between the sensor pin-1 (+) and pin-3 (-)?
Y N
Is +5VDC measured between the PWB pin-4 (+) and pin-5 (-)?
Y N
Replace the PWB.
Check the connection between the PWB pin-4 and the sensor pin-1, as well as
between the PWB pin-5 and the sensor pin-3 for open circuits and poor contacts.
Check the sensor for contamination and improper installation.
If no problems are found, replace the sensor.
Remove the sheet of paper blocking the sensor. Is [HIGH] displayed?
Y N
Disconnect the sensor connector. Does the display change to [HIGH]?
Y N
Check the connection between the sensor pin-2 and the PWB pin-8 for a short cir-
cuit.
If no problem is found, replace the PWB.
Check the sensor for improper installation and incident light diffraction. If no problems are
found, replace the sensor.
Check the installation of the sensor. If no problems are found, replace the sensor.
Version 1.0
WC 5022/5024
Figure 1 2001
2.2.4.2 Permeable Sensor Failure FIP
Procedure
Enter DC330[XXX-XXX]. Block the sensor. Is [HIGH] displayed?
Y N
Disconnect the sensor connector. Does the display change to [HIGH]?
Y N
Check the connection between the sensor pin-2 and the PWB pin-8 for a short cir-
cuit. If no problem is found, replace the PWB.
Replace the sensor.
Remove any obstruction on the sensor light path. Does the display change to [LOW]?
Y N
Is +5VDC measured between the sensor pin-2 (+) and the GND (-)?
Y N
Check the connection between the sensor pin-2 and the PWB pin-8 for an open cir-
cuit and poor contact.
If no problem is found, replace the PWB.
Is +5VDC measured between the sensor pin-1 (+) and pin-3 (-)?
Y N
Check the connection between the PWB pin-4 and the sensor pin-1, as well as
between the PWB pin-5 and the sensor pin-3 for open circuits and poor contacts.
If no problem is found, replace the PWB.
Check the sensor for contamination.
If no problems are found, replace the sensor.
Check the sensor for improper installation and the Actuator for bending or failure.
If no problems are found, replace the sensor.
06/2014
2-159
Figure 1 2002
Status Indicator RAPs
2.2.4.1 Reflective Sensor Failure FIP