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 product.
●
The low-voltage power supply (LVPS) is providing either or both 24 Vdc and 5 Vdc voltages.
●
The DC controller microprocessor is functioning.
4. If startup noises and illuminated lights on the control panel are not present, check the following:
a. Turn the product off, and then remove the formatter.
b. Turn the product on, and then listen for startup noises and illuminated lights on the control panel.
If normal startup noises and lights are present, go to step
5.
NOTE: The control panel will be blank with the formatter removed.
c. Turn the product off, and then remove any installed accessories (for example, envelope feeders,
paper feeders, or output accessories).
Turn the product on, and then listen for startup noises and illuminated lights on the control panel.
If normal startup noises and lights are present, the problem might be with one of the accessories.
d. If normal startup noises and lights are still not present, replace the LVPS.
e. If after replacing the LVPS normal startup noises and lights are still not present, replace the DC
controller.
NOTE: If the error persists after replacing these assemblies, escalate the problem to the Global
Business Unit (GBU).
5. Try printing an engine test page.
a. Use a small pointed object to depress the test-page switch located on the rear of the product.
NOTE: The test page can only use Tray 2 as the paper source, so make sure that paper is loaded
in Tray 2.
126 Chapter 2 Solve problems ENWW
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