Re: LaserJet 4101mfp panel display blank (1059 Views)
Reply
Occasional Visitor
jfa32514
Posts: 2
Registered: ‎02-09-2012
Message 1 of 5 (1,061 Views)

LaserJet 4101mfp panel display blank

Recently, the panel display on my 4101mfp went blank. I can still print to the device, but can't copy/fax or do anything that requires panel inputs. I ordered a replacement panel and installed it, but the same problem exists. Does anyone have any suggestions?

Honored Contributor
Paul Canuck
Posts: 1,752
Registered: ‎08-08-2002
Message 2 of 5 (1,059 Views)

Re: LaserJet 4101mfp panel display blank

I think it is powered by the scanner. Here are some tips from the manual.

 

Printer is functioning (power on, fans running,

and so forth) but the control-panel display is

blank or displays garbled text.



Verify that the control-panel cable connector location

J1210 on the scanner controller PCB is correctly

connected and fully seated.



Verify that the control-panel wire harness is correctly

connected to the control-panel door (located behind

the control-panel grounding strip). See

Control-panel

door

on page 79.



Verify that the power supply in the flatbed unit is

functioning.



Check for frayed, pinched, or damaged wires.



Replace the control panel.

Hint

The control panel gets its power from the power supply in the scan unit, not

the power supply in the print unit.

 

Occasional Visitor
jfa32514
Posts: 2
Registered: ‎02-09-2012
Message 3 of 5 (1,056 Views)

Re: LaserJet 4101mfp panel display blank

Which manual are you speaking of? I have looked in the Service Manual and followed the 4 steps they have there, including replacing the panel, with no luck.

Honored Contributor
Paul Canuck
Posts: 1,752
Registered: ‎08-08-2002
Message 4 of 5 (1,052 Views)

Re: LaserJet 4101mfp panel display blank

There is a 410x mfp manual entitled service addendum. The base 4100 service manual does not cover the mfp scanner or control panel. Maybe that is what you have. Info I copied was from page 116. If you don't have it check here under multifunction. I would think if the control panel is good then it must be a power issue from the scanner unit.

 

http://www.feedroller.com/Store/hp_manuals.php

 

 

Occasional Visitor
hp_fixer
Posts: 2
Registered: ‎12-08-2012
Message 5 of 5 (803 Views)

Re: LaserJet 4101mfp panel display blank

As i said in a similar post, before buying a new power supply, get that power supply out from the scanner unit, and replace the 2 capacitors that have popped. Its about a 30 min job.

hint, you dont have to remove the gear drive as the service manual states. Just get a phillips in there to remove the ground wire. Also, i didn't have the same capacitor but very similar. 1000microfarad @35v

The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation.