Unsupported Duplex Unit ROM
The installed Duplex Unit does not contain the correct firmware.
Applicable Status Code:
Code U34:
Unsupported Duplex Unit ROM
Initial Actions:
Reseat the Duplex Unit.
Cycle the printer's power.
If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts
Duplex Unit
Engine Control Board
Troubleshooting Procedure Table
Step Actions and Questions
1
Check the following for evidence of fault or
damage:
Duplex Connector
Is there any damage?
2
Check that the Duplex Unit is correctly
installed and fully seated.
3
Check the Duplex Unit version using the
Service Diagnostics General Status menu.
Is the version current?
3-48
Wiring and Plug/Jack References
Options Map 4 Duplex Unit Controller Board
Phaser 7400 Color Printer Options Service Manual
Yes
Replace any
damaged parts.
Go to Step 3.
Replace Engine
Control Board (see
Book 1), if the error
persists, replace the
DUPLEX harness.
No
Go to Step 2.
Reseat the Duplex
Unit (page 5-122).
Replace the
Duplex Unit
(page 5-122).