Xerox Phaser 7400

3-86 Phaser 7400 Color Printer Service Manual
Paper Not Available Load Tray 1 (MPT) with [size] [type]
Tray 1 (MPT) Paper Size mismatch error. The size setting stored in NVRAM differs
from the size specified by the print job.
Initial Actions:
■ Check that the size setting in NVRAM, media loaded in the tray, and
specification for the job match.
■ Cycle printer power.
■ If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Front Sensor Board, PL8.1.7
■ Engine Control Board, PL1.1.4
■ Print Engine Map 9 (page 10-12)
■ Print Engine Front Sensor Board (2/2) (page 10-27)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the following for evidence of fault,
debris, damage, of misalignment:
■ Feed-Out #1 Sensor Actuator
■ Registration Sensor #1 Actuator
■ MPTSNS Harness
Replace the parts
concerned.
Go to Step 2.
2
Check the MPTSNS Harness continuity.
Is the harness conductive?
Go to Step 3. Replace the
harness.
3
Check for +5 V to the sensor.
Disconnect MPTSNS at the Front Sensor
Board.
Is there +5 V across MPTSNS-4 <=>
ground?
Replace the sensor
(
page 8-32).
Go to Step 4.
4
Check for +5 V to the Front Sensor Board.
Disconnect FSNS at the Motor Driver
Board.
Is there +5 V across FSNS-10 and -14<=>
ground?
Replace the Front
Sensor Board
(
page 8-150).
Go to Step 6.
5
Check the FSNS Harness continuity.
Is the harness conductive?
Replace the Motor
Driver Board
(
page 8-141).
Replace the FSNS
Harness.