Error Messages and Codes 3-117
Unsupported Inverter Unit ROM
The printer has detected an incompatible Inverter assembly.
Applicable Status Code:
Code U50: Unsupported Inverter ROM
Initial Actions:
■ Cycle the printer's power.
■ If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Inverter Control Board ■ Options Map 3 Inverter Controller Board
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the Inverter firmware version using
the Service Diagnostics General Status
menu.
Is the version current?
Replace the Engine
Control Board
(
page 8-112)
Replace the
Inverter Control
Board.
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