Canon Troubleshoot Error E744-600: Self Diagnosis and Solutions

	CHAPTER 6 SELF DIAGNOSIS
E743
0000	The reader controller PCB detects a fault in the communication between the
	main controller PCB and the reader controller PCB.
Main cause	The connector has poor connection. The main controller PCB has a fault.

Action

1. Connector, Main controller PCB

	Is the connection between the connector J1014 on the main controller PCB
	and the connector J409 on the reader controller PCB normal?
	NO: Correct the connection.
	YES: Replace the main controller PCB.
E744
0000	The BootROM on the main controller PCB and the system software are for
	different models or are of different types.
Main cause	The BootROM is not mounted correctly, or a fault occurred during down-
	loading or when downloading the system software.

Making Corrections

Downloading (system software)

Check the types of the BootROM and the system software, and download system software of the correct type.

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