Controller Self Diagnosis - Canon imageRUNNER ADVANCE C255 Series Service Manual

Controller Self Diagnosis

In order to reduce the time for identifying the cause of error occurred in the field and improve the accuracy of identifying the error
locations, operation of the controller system error diagnosis tool added to the host machine and the remedies for errors are
described.
This manual can be used when the host machine is in the following conditions.
• When a failure of the Main Controller PCB and the related PCBs (child PCBs such as TPM installed on the Main Controller
PCB) is suspected
PCBs and units diagnosed by the tool are as follow:
• Main Controller PCB
• TPM PCB
• Flash PCB
• Memory PCB
• HDD
DC Controler PCB
Operation
panel
The area framed in blue (dotted line) in the figure shows the components to be checked by the controller system error diagnosis
tool.
The Main Controller PCB, child PCBs installed on the Main Controller PCB and HDD are automatically checked, and the result
is displayed on the Control Panel.
Option
Flash PCB
Controller system
failure diagnosis
Main Controller PCB
tool
All-night/Non-all-
night Power Supply
HDD
Reader
Option
345
6. Troubleshooting