HP Color LaserJet CP2020 Service Manual - Page 204
Power-on checks, Ensure that the control-panel display is connected.
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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 power button is in the on position. ● Verify that the formatter is seated correctly. ● Remove any HP Jetdirect or other devices, and then try to turn the product on again. ● Ensure 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. 184 Chapter 7 Problem solve ENWW
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 power button is in the on position.
●
Verify that the formatter is seated correctly.
●
Remove any HP Jetdirect or other devices, and then try to turn the product on again.
●
Ensure 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.
184
Chapter 7
Problem solve
ENWW