Canon Color imageRUNNER LBP5280, Service Manual, Page: 203 / 284

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Troubleshooting > Standard/Adjustment > Adjustment of Electrical Parts > When Replacing the Main Controller PCB
Troubleshooting > Standard/Adjustment > Adjustment of Electrical Parts > When Replacing the Main Controller PCB
For details on preparation required for reinstalling the MEAP application, refer to the
Service Manual > Chapter 2 Technical Description > MEAP > Maintenance > Procedure for
reinstalling MEAP applications after replacing the PCB.
2-1-2 Backup to USB memory
• Connect the USB memory to the host machine.
• Select Setup Menu>SERVICE MODE>FUNCTION GR.>USB-H>On.
• Back up data of the Main Controller PCB to the USB memory.
Select Setup Menu>SERVICE MODE>FUNCTION GR.>ECONF>EXPORT>ALL>Yes.
• Select Setup Menu>SERVICE MODE>FUNCTION GR.>USB-H>Off.
• Disconnect the USB memory from the host machine.
2-2 Replacing the PCB and turning ON the power
• Turn OFF the power.
• Replace the Main Controller PCB with a new one (service part).
• Turn ON the power.
• The equipment is started and can be used normally.
2-3 Restoring data after replacing the PCB
Perform the following operation to restore data backed up in the USB memory to the Main
Controller PCB.
• Connect the USB memory to the host machine.
• Select Setup Menu>SERVICE MODE>FUNCTION GR.>USB-H>On.
• Restore data backed up in the USB memory to the Main Controller PCB.
Select Setup Menu>SERVICE MODE>FUNCTION GR.>ECONF>IMPORT>Yes.
• Select Setup Menu>SERVICE MODE>FUNCTION GR.>USB-H>Off.
• Disconnect the USB memory from the host machine.
NOTE
When you execute Setup Menu>SERVIVE MODE>FUNCTIONGR.>ECONF>EXPORT>A
LL>Yes upon backup of data by the USB memory, information kept by NVRAM on the DC
Controller PCB is also backed up. Therefore, if "ALL" is selected, the operation to back up the
information kept by NVRAM of the DC Controller PCB is not necessary.
2-4 Reinstalling the MEAP application and importing user information
For details on preparation required for reinstalling the MEAP application and importing
user information, refer to the Service Manual > Chapter 2 Technical Description > MEAP >
Maintenance > Procedure for reinstalling MEAP applications after replacing the PCB.
● 3 When data backup from the Main Controller PCB is not possible
When the Main Controller PCB cannot operate normally, then backup of various data is not
possible.
In this case, perform the following procedure to replace the PCB.
3-1 Replacing the PCB and turning ON the power
• Turn OFF the power.
• Replace the Main Controller PCB with a new one (service part).
• Turn ON the power.
• The equipment is started and can be used normally.
3-2 Backing up data kept by the NVRAM of the DC Controller PCB to the Main Controller
PCB
• Perform the following operation to initialize the DC Controller NVRAM backup area of the
Main Controller PCB.
Select Setup Menu>SERVICE MODE>FUNCTION GR.>CLEAR DCON.
• Turn OFF and then ON the power.
• By turning OFF and then ON the power, information kept by the DC Controller PCB
NVRAM is backed up to the DC Controller NVRAM backup area in the Main Controller
PCB.
3-3 Reinstalling the MEAP application
For details on reinstalling the MEAP application, refer to the Service Manual > Chapter 2
Technical Description > MEAP > Maintenance > Procedure for reinstalling MEAP applications
after replacing the PCB.