HP 9050

[Phil B.]

Re: HP 9050

if service manual is needed.. email me philb@steppservicesinc.com

[copyman]

Re: HP 9050

Good point by phil, definitely check the transfer roller. The defect ruler is usually right on and will point you in the right direction.

[Phil B.]

Re: HP 9050

ok the 9050 can feed 8.5x11.0 either LEF.. or SEF.. What feed direction? have you checked the transfer roller under the toner?

[blackcat4866]

Re: HP 9050

It looks to me like a developer bias short or drum ground loss. I think I'd start with a known good cartridge. =^..^=

[copyman]

Re: HP 9050

Sure looks like a bad toner cart to me. HP has what's called a "defect ruler" that will show the cause of issue by how far apart each occurrence is. Google 9050 "defect ruler" or look in manual.

Another thing comes to mind, check the blue levers on fuser to make sure they are not in the envelope position

[tech07]

Re: HP 9050

Since I'm researching for another tech, not sure. Although we aren't HP techs, it reminds me of the Toshiba 287s (OKIDATA) fuser. Looks fine when it's removed from printer, but still leaves smudges at regular intervals.
I dont know the diameter of fuser. I'm going to recommend that to him next, although I hate "throwing" parts at machines.

[blackcat4866]

Re: HP 9050

What interval does it repeat at? =^..^=

[tech07]

Guys, does anyone recognize this symptom on a HP 9050 ?
Replaced cartridge and power supply.
FUSER ?
1 or 2 copies are ok. multiple copies not...