WorkCentre Pro 423/428 2-34 CHAPTER 2 TROUBLESHOOTING
03/02 2.3 Level 2 Troubleshooting
2.3.1.7 Corrective Action for X Codes
At the occurrence of a problem with the machine, the machine is monitoring its status and will
indicate the problem by X Code. When Self Diagnostic is activated on the Control Panel,
hardware inside the machine will be diagnosed. If there is any problem with the machine, an
error will be declared. However, when the problem is caused by the remote terminal or the
telephone line or software, the machine will be diagnosed as normal.
When the line is not switched to the machine, no X Code will be displayed.
For problems that have little possibility of being repeated, Internal Codes corresponding to X
Codes can be observed by outputting activity reports in the Diag(C/E) Mode.
To take a corrective action for a X Code problem, comprehend the status and frequency of the
problem by the activity report. For a repeatable problem, grasp signal send/receive results by
outputting the protocol monitor. This leads to operation efficiency.
Resolve a X Code problem by isolating problems due to the telephone line and its
surroundings, the remote terminal, etc. following the flow chart at right.
Even if no X Code is displayed, make clear causes of a problem using the X Code and
Internal Code List since an Internal Error Code corresponding to a X Code is sometimes
displayed in the activity report.
2.3.1.8 Corrective Action for X Codes flow chart
No communications
Is line switched to the machine?
YN
Check modular jacks at line connecting points and line connection.
Are connections good?
YN
Connect properly.
When the problem is “data was not received,” replace NCU PWB.
X Code Display
Set Line Monitor.
Are communications successful?
YN
Check Coupler modular jacks and line connection.
Are connections good?
YN
Connect properly.
Enter Diag(C/E) Mode.
Output Activity Report.
Output Protocol Monitor Report.
Go to X Code List or Internal Code List.
Check the remote terminal.
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