HP LaserJet IIP - Need repair help

[Guest]

Archived from groups: comp.periphs.printers,comp.sys.hp.hardware,sci.electronics.repair,comp.sys.hp.misc,comp.sys.hp.hardware (More info?)

We have a weird problem on 2 HP Laserjet IIP printers. If you run a
continuous print-test (Hold down Alt + Test for 5 seconds), the first
page comes out very faint. But each successive page gets darker and
darker until about the 10th page is almost perfect.

It's strange because we've had several of these printers for many years
and now 2 of them are doing the same thing.

I tested their cartridges on a good printer, and the cartridges are
fine, so the cartridge is not the problem.

Does anyone have any ideas of what the problem is? We're trying to get
some idea of the cost of repairing these things, and whether it's
worthwile.

 

[ME]

Archived from groups: comp.periphs.printers,comp.sys.hp.hardware,sci.electronics.repair,comp.sys.hp.misc (More info?)

In message <1118411879.289771.98670@g43g2000cwa.googlegroups.com>, JJ
Jones <jamesjonathanjones@yahoo.com> writes
>We have a weird problem on 2 HP Laserjet IIP printers. If you run a
>continuous print-test (Hold down Alt + Test for 5 seconds), the first
>page comes out very faint. But each successive page gets darker and
>darker until about the 10th page is almost perfect.
>
>It's strange because we've had several of these printers for many years
>and now 2 of them are doing the same thing.
>
>I tested their cartridges on a good printer, and the cartridges are
>fine, so the cartridge is not the problem.
>
>Does anyone have any ideas of what the problem is? We're trying to get
>some idea of the cost of repairing these things, and whether it's
>worthwile.

Its almost certainly not worth repairing them. IIRC if you pull down
the front cover and look sort of centre top inside just above the toner
cartridge there is a brightness slider, fiddling with that may help.

--
Timothy

 

[Guest]

Archived from groups: comp.periphs.printers,comp.sys.hp.hardware,sci.electronics.repair,comp.sys.hp.misc,comp.sys.hp.hardware (More info?)

"JJ Jones" <jamesjonathanjones@yahoo.com> wrote:
>We have a weird problem on 2 HP Laserjet IIP printers. If you run a
>continuous print-test (Hold down Alt + Test for 5 seconds), the first
>page comes out very faint. But each successive page gets darker and
>darker until about the 10th page is almost perfect.
>
>It's strange because we've had several of these printers for many years
>and now 2 of them are doing the same thing.
>
>I tested their cartridges on a good printer, and the cartridges are
>fine, so the cartridge is not the problem.
>
>Does anyone have any ideas of what the problem is? We're trying to get
>some idea of the cost of repairing these things, and whether it's
>worthwile.
>
Most likely the charge transfer roller. They do deteriorate after a while, and
the symptoms don't sound consistent with a High Voltage PCA or DC Controller PCA
problem. If you do your own labor, it'd probably be worth it -- the part
itself is <$20, IIRC.

 

[Tony]

Archived from groups: comp.periphs.printers,comp.sys.hp.hardware,comp.sys.hp.misc,sci.electronics.repair (More info?)

See Andy Hill's reply, that would be my guess too (transfer charge roller),
fairly cheap part and still available. BTW if you change it yourself be sure to
avoid contaminating the roller with oils from your fingers.
Failing that the fuser or power supply are the probable culprits and they would
be very expensive to replace (probably not worth it).
You can be sure that the problem occuring on two printers at the same time is
coincidence since the failure occurs with an internal printer test.
Tony

"JJ Jones" <jamesjonathanjones@yahoo.com> wrote:
>We have a weird problem on 2 HP Laserjet IIP printers. If you run a
>continuous print-test (Hold down Alt + Test for 5 seconds), the first
>page comes out very faint. But each successive page gets darker and
>darker until about the 10th page is almost perfect.
>
>It's strange because we've had several of these printers for many years
>and now 2 of them are doing the same thing.
>
>I tested their cartridges on a good printer, and the cartridges are
>fine, so the cartridge is not the problem.
>
>Does anyone have any ideas of what the problem is? We're trying to get
>some idea of the cost of repairing these things, and whether it's
>worthwile.

 

[Guest]

Archived from groups: comp.periphs.printers,comp.sys.hp.hardware,sci.electronics.repair,comp.sys.hp.misc,comp.sys.hp.hardware (More info?)

Everyone: Thanks for your help!