Power subsystem
Power-on checks
When you turn on the product, if it does not make any sound or if the control-panel display is blank,
check the following items:
●
Verify that the product is plugged directly into an active electrical outlet that has the correct
voltage. Do not plug the product into a surge protector or power strip.
●
Verify that the on/off switch is in the on position.
●
Verify that the formatter is seated and operating correctly.
●
Remove any HP Jetdirect accessories or other devices, and then try to turn the product on again.
●
Make sure that the control-panel display is connected.
●
Check the two fuses on the power supply.
●
If necessary, replace the power supply.
●
If necessary, replace the DC controller.
Control-panel checks
Use the product control panel to conduct tests on the control panel LEDs, display, or buttons.
NOTE: When the menus are accessed, some of the touchscreen buttons located along the sides of the
control-panel display are not illuminated. Use the figure below to locate the Cancel
button and the
left arrow button to access the control-panel tests.
84 Chapter 2 Solve problems ENWW
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