Xerox Phaser 790 Service Manual page 111

007-705 Tray 3 Empty RAP
The Control Logic detected the signal, No Paper Sensor Sensed (H) +5VDC.
Initial Actions
• Put paper into Tray 3 and ensure that the paper is loaded properly.
Procedure
Remove Paper Tray 3. Check that the No Paper Actuator is operating properly. The
tor is present and operates smoothly.
Y N
Replace the No Paper Sensor Actuator (PL 13.5).
Access the Digital Input (DI) Test from the control panel. Enter code [DI-B4]. Press the Enter
button. The display is "1".
Y N
Check the following:
• Go to Flag 1. Check the wires for an open circuit
• Go to Flag 2. Check the wires for an open or a short circuit to ground.
• If the wires are good, replace the No Paper Sensor (PL 13.5).
Actuate the No Paper Actuator. Access the Digital Input (DI) Test from the control panel. Enter
code [DI-B4]. Press the Enter button. The display is "0".
Y N
Replace the No Paper Sensor (PL 13.5). If the problem continues, replace the Feeder
PWB (PL 13.4).
Replace the Feeder PWB (PL 13.4).
Initial Issue
Phaser 790/DocuColor 2006
Actua-
10/00
2-97
Status Indicator RAPs
007-705