Xerox Phaser 7400 Service Manual page 129

Jam at Door A Open Door A to Clear
Media reached Duplex Entrance Sensor, but a second sheet was detected in the feed
path. This error represents a misfeed jam for the Duplex Unit.
Applicable Status Code:
Code A2: Jam at Door A
Initial Actions:
Check the paper path for obstructions or debris.
Cycle printer power.
If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts
Duplex Unit, PL16.1.0
Troubleshooting Procedure Table
Step Actions and Questions
1 Check the following for evidence of fault,
dirt, debris, or damage:
Door A
Door D
Duplex Unit Rollers
Duplex Unit connector
Duplex Sensors and Actuators
Is there any damage or debris?
2 Test the Duplex Unit sensors.
Run the Service Diagnostics for each of the
four Duplex Unit sensors.
Do the sensors and actuators function
correctly
3
Test the Duplex Unit motors.
Run the Service Diagnostics Duplex Motor
tests.
Do the motors function correctly
4 Inspect the wiring harness for the Duplex
Unit.
Is the wiring harness properly connected
and free from defects?
Error Messages and Codes
Wiring and Plug/Jack References
Print Engine Map 5 (page 10-8)
Print Engine Motor Driver Board (5/6) (page 10-35)
Yes
Clean or replace
the appropriate
parts.
Go to Step 3.
Go to Step 4.
Replace the Duplex
Unit.
No
Go to Step 2.
Replace the
damaged sensor.
Replace the Duplex
Unit
Replace the
Engine Control
Board
(page 8-112).
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