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Canon Color imageCLASS MF644Cdw

Error Codes List page 8

  • Code: E733-0000
  • Description: Printer communication error
  • Causes: A communication error between the Engine Controller PCB and the Main Controller PCB occurred.
  • Remedy: 1. Check the harness/connector between the Engine Controller PCB (UN1) and the Main Controller PCB (UN30). 2. Install the set of controller firmware. 3. Replace the Main Controller PCB (UN30). 4. Replace the Engine Controller PCB (UN1).
  • Code: E736-0000
  • Description: Fax communication error
  • Causes: Communication error with the CCU/modem.
  • Remedy: 1. Check the connection of the NCU PCB (UN38). 2. Replace the NCU PCB (UN38). 3. Replace the Main Controller PCB (UN30).
  • Code: E736-0001
  • Description: Error in ROM for backing up fax data
  • Causes: An error occurred in the ROM for backing up fax data.
  • Remedy: 1. Check the connection of the NCU PCB (UN38). 2. Replace the NCU PCB (UN38). 3. Replace the Main Controller PCB (UN30).
  • Code: E743-0000
  • Description: DDI communication error
  • Causes: Software sequence error
  • Remedy: 1. Turn OFF and then ON the power.
  • Code: E744-0001
  • Description: Invalid combination of language file versions
  • Causes: The language file version did not match that of the main program.
  • Remedy: 1. Update the firmware.
  • Code: E744-0002
  • Description: Language file error
  • Causes: The size of the language file exceeded the allowed size.
  • Remedy: 1. Update the firmware.
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