Phaser 6128MFP Service Manual 3-89
Error Messages and Codes
MCU Firmware Error
MCU firmware error has occurred. This troubleshooting procedure applies to this
error.
Applicable Error
• 003-340: MCU Firmware Error
Initial Actions
•Check MCU Board firmware version.
• Cycle printer power.
• If the problem persists, follow the procedure below.
2 Print the Configuration page.
Does the memory amount listed
match the installed memory?
Replace the
Image
Processor Board
(page 8-41).
Reseat the
Memory Card
and reprint the
Configuration
page to check
memory.
3 Replace the Memory Card.
Does the error still occur?
Replace the
Image
Processor Board
(page 8-41).
Complete.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ MCU Board, PL10.7.7 ■ “Map 1 - MCU Board” on page 10-6
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Check the MCU Board installation.
Cycle system power.
Does the error persist?
Replace the
MCU Board
(page 8-57).
Check system
electrical
grounds.
Troubleshooting Procedure Table
Step Actions and Questions Yes No