[TechAssist] Re: HP laser jet 4, shadow down center of print

  • From: "Michael OBeirne" <michael@xxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Tue, 21 Jan 2003 02:26:35 -0500

Hey Larry,

Just for your info, I'm certified on that printer. (as well as a couple of
dozen other HP DeskJet and Color LaserJet printers) Also, my company is a
ASC as well. The brush is just for dusting toner off of certain transport
areas. The corona wire (80 microns thick used for charging the drum) is
located in the cartridge. There should be another corona wire (60 Microns
thick used for transferring the image from the drum to the paper) located on
the paper path just under the area where the cartridge sits.

HTH.

Michael OBeirne - A+,NET+,INET+,HP,Compaq,Lexmark,Toshiba Certs.
Dove Lane Electronics
531 US HWY 64
Rutherfordton, NC. 28139
828-288-9050

-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of larry
Sent: Monday, January 20, 2003 11:32 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: HP laser jet 4, shadow down center of print



I cleaned the dust out and tried another new toner unit.
and so far it is ok.
I don't have a brush for my HP4 any more. and cant find a
carona wire.
where is it? in the toner unit? what is the brush used for.
my instructions don't explain it good enough for me to
understand.
Thank you all, for the tips.
Larry





David Lessard wrote:
>
> Larry, When you say you replaced the cartridge are you talking about the
> toner cartridge or the developer cartridge? The unit may need a very good
> cleaning. Random black vertical lines can be caused by a dirty corona
wire.
> To solve this problem you need to clean the wire with the brush provided
> with your laser printer (see instruction manual). Be very careful not to
> break the wire, I sometimes use alcohol on a Q-tip to soak the corona wire
a
> bit before scrubbing it clean with the brush. If the vertical lines do not
> go away an electrical charge is jumping across the corona wires. The
> cartridge needs to be replaced.
>
> David Lessard
> Alexandria Electronics
> mrfixit@xxxxxxxxxxx
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of larry
> Sent: Monday, January 20, 2003 12:06 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] HP laser jet 4, shadow down center of print
>
> my printer is giving a 2 inch ragged band of shading , down
> center of print.
> I tried a new cartridge, but it only moved the band to one
> side.
> Are there any tips or sites anyone could recommend?
> Thank you,
> Larry
>
> --
> Schneider TV & Electronic Inc.
> 5415 N. Wooster ave.
> Dover, Ohio 44622       www.geocities.com/schntv2000/
> 330-343-0768         FCC. first class & Extra class K8WLY
>
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--
Schneider TV & Electronic Inc.
5415 N. Wooster ave.
Dover, Ohio 44622       www.geocities.com/schntv2000/
330-343-0768         FCC. first class & Extra class K8WLY

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