3-76 Phaser 7400 Color Printer Service Manual
Manual Feed [size][type]
The print job specifications request the manual feed of media [size][type].
Initial Actions:
■ Inspect the tray to ensure that it is free of obstructions, is reloaded with
requested media, and the guides are adjusted correctly.
■ Cycle printer power.
■ If the problem persists, follow the procedure below
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ No Paper Sensor, PL5.3.14
■ No Paper Sensor Actuator, PL5.3.15
■ Print Engine Map 9 (page 10-12)
■ Print Engine Front Sensor Board (1/2) (page 10-26)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Fill Tray 1 (MPT) with paper.
Does the error persist?
Go to Step 2. Complete.
2
Check the following for evidence of fault or
damage:
■ Tray 1 (MPT) No Paper Sensor
■ Sensor Actuator
Is there any damage?
Replace any
damaged parts.
Go to Step 3.
3
Test the Tray 1 (MPT) No Paper Sensor.
Run the Service Diagnostics Tray 1 (MPT)
No Paper Sensor test.
Does the sensor function correctly?
Replace the
Engine Control
Board
(
page 8-112).
Go to Step 4.
4
Check for +5 V to the Tray 1 (MPT) No
Paper Sensor.
Is there +5 V across MPTPAP-1 <=>
ground?
Replace the sensor
(
page 8-33).
Replace the Front
Sensor Board
(
page 8-150).
5
Check all pins of the FSNS harness for
continuity.
Disconnect the FSNS Harness.
Is the harness conductive?
Replace the Motor
Driver Board
(
page 8-141). If the
error persists, go to
Step 6.
Replace the
FNSNS Harness.
6
Check all pins of the DRV0 harness for
continuity.
Disconnect the DRV0 ribbon cable.
Is the cable conductive?
Replace the
Engine Control
Board
(
page 8-112).
Replace the DRV0
Harness.