Canon imageRUNNER ADVANCE C5255 Series Service Manual page 785

E Detailed Occurance Items
code code area
E748 2011 00 Title Error in Flash PCB
Description Unable to find the kernel.
Remedy Contact to the sales companies.
E748 2012 00 Title Error in Flash PCB
Description Unable to mount the Linux system at starting service
mode, or there is no system start script.
Remedy Contact to the sales companies.
E748 2021 00 Title Error in access of Main Controller PCB 2
Description Necessary H/W on the Main Controller PCB 2 is not
found.
Remedy 1. Clean the terminal of the Main Controller PCB 2, and
disconnect and then connect it.
2. Clean the terminal of the Main Controller PCB 1, and
disconnect and then connect it.
3. Replace the Main Controller PCB 2.
E748 2022 00 Title Error in access of Main Controller PCB 2
Description Necessary H/W on the Main Controller PCB 2 is not
found.
Remedy 1. Remove and then insert the Main Controller PCB 1
and the Main Controller PCB 2 .
2. Replace the Main Controller PCB 1 and the Main
Controller PCB 2.
E748 2023 00 Title Error in access of Main Controller PCB 2
Description Unable to initialize the memory DDR2-SDRAM on the
Main Controller PCB 2.
Remedy 1. Clean the terminal of the DDR2-SDRAM , and
disconnect and then connect it.
2. Replace the DDR2-SDRAM.
E748 2024 00 Title Error in access of Main Controller PCB 2
Description CPU on the Main Controller PCB 2 fails to complete the
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 2 and
check around the connector.
3. Check power state of the Riser PCB and check around
the connector.
4. Replace the Main Controller PCB 2.
5. Replace the Riser PCB.
6. Replace the Main Controller PCB 1.
E748 2025 00 Title Error in access of Main Controller PCB 2
Description Disconnection of the Bypass PCB was detected.
Remedy Remove and then install the Bypass PCB.
7
Error•Jam•Alarm > Error Code > Error Code Details
Description
7 Error•Jam•Alarm > Error Code > Error Code Details
E Detailed Occurance Items
code code area
E748 2026 00 Title Error in access of Main Controller PCB 2
Description Disconnection of the Image Processing Sub PCB was
detected.
Remedy Remove and then install the Image Processing Sub PCB.
E748 9000 00 Title System error
Description System error
Remedy Contact to the sales companies.
E749 0006 00 Title Restart direction due to configuration change.
Description The option such as the Finisher and Paper Deck 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.
- The breaker is ON
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 or turn the breaker
OFF.
Refer to the Service Manual > Chapter 2 > External and
Controls > Quick Startup for details.
7-94
Description
7-94