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HP LJ 9000 Power Issues

HP LJ 9000 Power Issues

HP LJ 9000 Power Issues

I have a HP LJ 9000. When you turn on the power switch, the display flashes quickly, then nothing. No lights, no fans spins, no noise. I have replaced the LVPS and the HVPS, but there is no change. Any help would be appreciated.

RE: HP LJ 9000 Power Issues

With the printer turned off try remove the fuser and the formatter in the printer.
Start the printer and listen if any motors or fans spin.
If there is "noise", turn off the printer and reinstall the fuser.
Start the printer and listen... If there is "noise" try perform an engine test.

Please report back with your findings.


RE: HP LJ 9000 Power Issues

No noise at all. Display just flashes, then nothing.

RE: HP LJ 9000 Power Issues

Please check the two fuses in the LVPS that none of them are blown before continuing.
One is for the fuser directly while the other distributes power to the rest of the printer.
Since the display at least flashes we must assume the display is OK.
Next step would be to check up on connections from the Dc-controller since it handles all motors, sensors etc.
If there is no engine or fan sound with formatter and fuser removed, I would usually go for a dc-controller exchange.

RE: HP LJ 9000 Power Issues

Same issue. Fuses are fine and I have replaced the LV & HV boards twice, just in case. Nothing has changed.

RE: HP LJ 9000 Power Issues

most likely it broke, better change it to a new printer

RE: HP LJ 9000 Power Issues

Im with hpwizzard, DC Cont. is probably the culprit.
Plug printer directly into wall socket!

"Impatience will reward you with dissatisfaction" RMS Cosmics'97

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