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3-34 Phaser 8400/8500/8550/8560 Color Printer Service Manual
Error Messages and Codes
26,962.6x Errors - “Fall Out” Code
Check the previous error in the fault history and troubleshoot that code.
27,0XX.6x Errors - Profile Library
Ensure the ground integrity of the printer (see “Ensuring Ground Integrity” on
page 4-65).
29,0XX.6x Errors - Jam Manager
1. Reset NVRAM, and then retest.
2. Replace the NVRAM.
31,0XX.4x Errors - Mechanical Initialization Jam
The Media Drive motor stalled while moving the media path drive train. Look
for interference or debris in the paper path. Check/test Media Drive motor.
31,001.40: Mechanical initialization jam fault.
Troubleshooting Procedure for Mechanical Unit Jam
Step Questions and Actions
Yes No
1 Check that all the main tray paper path
sensor wires are clear of the Take Away
Rollers.
Are any wires damaged?
Replace the
wiring
harness.
Go to Step 2.
2 Are the Take Away Rollers dirty,
contaminated, or damaged?
Replace the
Take Away
Rollers.
Go to Step 3.
3 Run the Paper Path Drive test.
Did the test pass?
Go to Step 5. Go to Step 4.
4 Run the Media Drive Motor test.
Does the Media Drive Motor run extremely
fast?
Replace the
Media Drive
Assembly.
Go to Step 5.
5 1. Remove the Media Drive Assembly and
manually rotate each paper path roller.
2. Identify any roller that may be binding and
causing drag.
3. Repair or replace as necessary.
Did this correct the problem?
Complete. If the path is
clear of debris
and the rollers
rotate
normally,
replace the
Media Drive
Assembly.