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Controller System Error Diagnosis
Boot Method
1) Turn ON the Main Power Supply Switch while pressing the numeric keys '2' and '4' simultaneously.
2) Keep pressing the numeric keys (for approx. 20 seconds) until the following screen appears on the Control Panel.
Note:
When this tool is not installed correctly, the following regular screen is displayed.
In this case, perform the following remedy.
Turn OFF the Main Power Supply Switch again, and execute step 1 and 2 shown above.
If this tool still does not boot, it means that BCT is deleted. So, install BCT.
If BCT is not installed correctly, "--.--" is displayed in Service
Mode (COPIER>DISPLAY>VERSION>BCT) in the main body.