Xerox Phaser 6128MFP - MCU Communication Error

Phaser 6128MFP Service Manual 3-95
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 Error
• 024-371: MCU Comm. Error
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, PL10.6.6
■ MCU Board, PL10.7.7
■ ESS Harness, PL10.8.1
■ “System Connections” on page 10-5
■ “System Control” on page 10-22
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Reseat connections to the I/P and
MCU Boards then cycle system
power;
Does the error persist?
Go to step 2. Complete.
2 Check P/J901 and P/J10 connections
between the I/P and MCU Boards.
Are the connections secure?
Go to step 3. Reseat the
connectors.
3 Disconnet P/J901 and P/J10 and
check the harness continuity.
Is the harness damaged?
Repair the
harness.
Go to step 4.
4 Replace the MCU Board (page 8-57).
Does the error persist?
Replace the I/P
Board
(page 8-41).
Complete.