b. If the engine test page prints, the print engine is operating normally (a failed engine test print
page does not necessarily indicate that the print engine or DC controller is defective).
NOTE: If the engine test page does not print, turn the product off, remove the formatter, and
then try the engine test again. If the page prints, the problem might be the formatter.
Troubleshooting a blank control panel
A blank control panel display can be caused by by one or more of the following:
●
No power to the product.
●
Power supply has tripped (over-current/over-voltage/temperature issue).
●
Formatter not fully seated.
●
Faulty component installed on the formatter (for example, memory DIMM or disk drive).
●
Control panel connector not fully seated.
●
Faulty formatter.
●
Faulty DC controller.
●
Faulty control panel.
1. Verify that power is available to the product. If the product is plugged into a surge protector or
uniterruptible power supply (UPS), remove it, and then plug the product directly into a known operating
wall receptacle (make sure that the wall receptacle provides the correct voltage and current for the
product).
2. Make sure that the power switch is in the on position.
3. Make sure that the fan runs briefly, which indicates that the power supply is operational.
4. Make sure that the control-panel display wire harness is connected.
ENWW Troubleshooting process 127
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