Power-on troubleshooting overview
Startup sounds are heard when the printer power is turned and is operating correctly. If these sounds are
heard, the dc side of the power supply is functioning.
If startup sounds are heard, the next troubleshooting step is to isolate print engine, formatter, and control
panel problems. Perform an engine test. If the formatter is damaged, it might interfere with the engine test. If
the engine-test page does not print, try removing the formatter, and then performing the engine test again. If
the engine test is then successful, the problem is almost certainly with the formatter, the control panel, or the
cable that connects them.
NOTE: Depressing, and holding down, the test-page switch causes the printer to continually print test
pages. Releasing the switch stops the test page continuous printing.
Troubleshooting power on problems
1. Verify that power is available to the printer. If the printer is plugged into a surge protector or
uninterruptible power supply (UPS), remove it, and then plug the printer directly into a known operating
wall receptacle (make sure that the wall receptacle provides the correct voltage and current for the
printer).
Unplug any other devices on the same circuit that the printer is using.
2. Try another known operating wall receptacle and a dierent power cord.
3. Listen for startup noises (for example, fans or motors) and look for illuminated lights on the control
panel and formatter LEDs.
NOTE: Operational fans, motors, and control-panel lights indicate the following:
●
AC power is present at the printer.
●
The power supply is providing either or both 24 Vdc and 5 Vdc voltages.
●
The DC controller microprocessor is functioning.
4. Check the following:
a. Turn the printer on, and then listen for startup noises. If normal startup noises are heard, go to
step c below.
b. If normal startup noises are not heard, turn the printer o, and then remove any installed
accessories (for example, envelope feeders, paper feeders, or output accessories).
Turn the printer on, and then listen for startup noises. If normal startup noises are heard, the
problem might be with one of the accessories.
c. Turn the printer o and then remove the power connector from the formatter. Turn the printer on,
and then use a small pointed object (like a paper clip) to depress the engine test-page switch
located on the rear or right side (depending on printer model) of the printer (near the formatter).
NOTE: The test page can only use Tray 2 as the paper source, so make sure that paper is loaded
in Tray 2.
ENWW Troubleshooting process 109
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