Xerox Phaser 7400

3-20 Phaser 7400 Color Printer Service Manual
Jam at Door A Misfeed at Tray 1 (MPT)
Media reached the Duplex Reverse Sensor, but a second sheet was detected entering
the feed path from Tray 1 (MPT). This error represents a misfeed jam for media fed
from Tray 1 (MPT).
Applicable Status Code:
Code A3: Jam at Door A, Misfeed at Tray 1 (MPT)
Initial Actions:
■ Cycle printer power.
■ If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Tray 1 (MPT) Feed Roller, PL10.1.53
■ Tray 1 (MPT) Pick Roller, PL10.1.43
■ Tray 2 Registration Motor, PL4.2.36
■ Tray 2 Feed Motor, PL4.2.35
■ Front Sensor Board, PL4.2.97
■ Print Engine Map 5 (page 10-8)
■ Print Engine Front Sensor Board (1/2) (page 10-26)
■ Print Engine Front Sensor Board (2/2) (page 10-27)
■ Print Engine Motor Driver Board (4/6) (page 10-34)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the following for evidence of fault,
dirt, debris, or damage:
■ Tray 1 (MPT) Feed Rollers
■ Registration Rollers
■ Sensor Actuator
Is there any damage or debris?
Clean or replace
the appropriate
parts.
Go to Step 2.
2
Test the Registration #1 Sensor.
Run the Service Diagnostics Registration
Entrance Sensor test.
Does the sensor operate correctly?
Go to Step 3. Replace the
actuator. If the
error persists,
replace the Front
Sensor Board
(
page 8-150).
3
Test the Feed Motor, Registration Motor,
and Registration Clutch #1.
Do the components function correctly?
Replace the Engine
Control Board
(
page 8-112).
Go to Step 4.
4
Check each motor and clutch harness.
Are the harnesses properly connected and
free from defects?
Replace the Engine
Control Board
(
page 8-112).
Replace the
harness and/or
problem motor/
clutch.