Phaser 6180MFP Multifunction Printer Service Manual 3-119
Error Messages and Codes
MCU Communication Error
Communication has failed between the Engine and the Controller. The
following troubleshooting procedure applies to this error.
Applicable Chain Link
■ Chain Link 024-371: MCU Comm. Error (IOT-ESS Communication Fail)
Initial Actions
■ Cycle printer power.
■ If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Image Processor Board, PL9.1.20
■ MCU Board, PL9.2.13
■ “General Wiring Diagram” on page 10-23
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 1.Reseat the Image Processor Board
page 8-90) (and the MCU Board
(page 8-88).
2.Does the error still occur?
Go to step 2. Complete.
2 1.Replace the Image Processor Board
(page 8-90).
2.Does the error still occur?
Replace the
MCU Board
(page 8-88).
Complete.
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