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.
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 (fans and motors) and illuminated lights on the control panel.
NOTE: Operational fans, motors, and control-panel lights indicate the following:
●
AC power is present at the printer.
●
The low-voltage power supply (LVPS) 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, paper feeders).
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 test-page switch located on
the rear side 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.
110 Chapter 2 Solve problems ENWW
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