Code :

Code: E748-2023
Description: Main Controller PCB access error
Unable to initialize memory DDR2-SDRAM at the Main Controller PCB
Remedy: 1. Clean the terminal of DDR2-SDRAM, and remove and then install the DDR2-SDRAM.
2. Replace the DDR2-SDRAM.

Code: E748-2024
Description: Main Controller PCB access error
The CPU at the Main Controller PCB failed to complete initialization
Remedy: 1. Clean the terminal of DDR2-SDRAM, and remove and then install the DDR2-SDRAM.
2. Check power state of Main Controller PCB and check around the connector.
3. Replace Main Controller PCB.

Code: E749-0002
Description: Rebooting instruction due to change of MEAP configuration
There is a change in configuration that requires turning OFF and then ON the power
Remedy: The symptom is recovered by turning OFF and then ON the power

Code: E749-0003
Description: Booting instruction due to change in mAccele configuration
There is a change in configuration that requires turning OFF and then ON the power
Remedy: The symptom is recovered by turning OFF and then ON the power

Code: E749-0005
Description: Booting instruction due to change in hardware configuration
There is a change in configuration that requires turning OFF and then ON the power
Remedy: The symptom is recovered by turning OFF and then ON the power

Code: E749-0006
Description: Restart direction due to configuration change.
The option such as the Finisher and ADF was installed or removed when all of following conditions were met and the machine configuration is changed when the main power switch is turned ON.
- Settings/Registration > Preferences > Timer/Energy Settings > Quick Startup at Power-on > ON
- The Main Power Switch is turned OFF
- The power plug of the machine is connected to the output.
Remedy: It is recovered by turning OFF and then ON the main power.
CAUTION
This machine provides power to some PCBs even when in the main power OFF status.
The power supply is not completely OFF by just turning OFF the main power switch and therefore, the machine is unable to detect a configuration change.
When disconnecting and then connecting a connector, always disconnect the power plug.
Refer to the Service Manual > Chapter 2 > External and Controls > Quick Startup for details.

Code: E753-0001
Description: Downloading error
Firmware update error
This symptom occurs when trying to update the firmware of an option that is not installed
Remedy: 1. Check the log to identify the location of the download error.
Check if the target option is installed.
When the target option is not installed:
-> The symptom is recovered by turning OFF and then ON the power (because there is nothing to update)
When the target option is installed:
-> Check if the target option is properly installed and see if the software to download is for the correct target option, and then execute downloading again.

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