General topic

Questions

 

 

Condensation

● Does condensation occur following a temperature change (particularly in

 

winter following cold storage)? If so, wipe affected parts dry or leave the

 

product on for 90 to 120 minutes.

 

● Was a cartridge opened soon after being moved from a cold to a warm

 

room? If so, allow the cartridge to sit at room temperature for 1 to 2 hours.

 

 

Miscellaneous

● Check for and remove any non-HP components (for example, a print cartridge

 

or imaging drum) from the product.

 

● Remove the product from the network and make sure that the failure is with the

 

product before beginning troubleshooting.

 

 

Power subsystem

Power-on checks

Turn on the power. If the control-panel LEDs do not illuminate, perform the power-on checks to find the cause of the problem.

1.Verify that the product is plugged into an active electrical outlet that delivers the correct voltage.

2.Verify that the power button is in the on position.

3.Make sure that the product makes the expected start up sounds.

NOTE: The overcurrent/overvoltage protection circuit in the low-voltage power supply unit might be functioning. Turn the product off, unplug the power cord, and turn the product on. If the product does not function, the fuse melts, or the power supply is malfunctioning, replace the engine controller unit. See Engine controller assembly on page 58.

ENWW

Troubleshooting processes 81