Black Horizontal Bars After Changing Toner - HP 3330 MFP

243johnm
243johnm used Ask the Experts™
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I have an HP 3330 MFP. Yesterday, I changed the toner cartridge and put in a new C7115X (HP branded...) cartridge.

When I made a copy on it, dark horizontal bars with a lot of loose toner bits were present. Same thing when printing... The bars are about 1.5" apart (7 heavy ones per page). I ran about 15 pages through with no change so I figured the new cartridge was a dud. Put in my 2nd spare cartridge ... and it had the exact same problem!

I looked in the manual and found how to clean the printer media path (From the service menu, choose "Cleaning Mode"). That didn't make any change at all.

The thing I don't understand is how it could go from working fine with an empty cartridge to printing horizaontal bars in two brand new HP cartridges.

Any ideas on how to fix this?

Thanks very much,

John
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Top Expert 2013

Commented:
it looks like the cartridges were not properly installed.
i would remove them all - then vacuum the isnides and clean the  paper path then check the install procedure ; maybe you missed something?

Author

Commented:
Thanks Nobus ... but there's not much to miss when installing an HP toner cartridge!

Vacuuming the inside of the printer? I thought that wasn't recommended practice due to how fine the tomer is...

Have you ever vacuumed the inside of an HP Printer? If so, what kind of vacuum did you use? My office is in my home and all we have here is a home vacuum ... and it has a rather powerful motor! I'm afraid I will blow a fine dust of toner all over our basement...

John

PS I think that somehow toner from the first cartridge spilled on a roller...
Most Valuable Expert 2013
Commented:
Use the Repetitive Image Ruler on p236 of the Service Manual to establish where the toner has leaked to.
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Top Expert 2013

Commented:
i have cleaned out lots of printers, and don't see any problem when you vacuum it out.

blowing olout i do in the outside..

Author

Commented:
Thanks MASQUERAID, I'll take a look at that!

Nobus: I'm in Montreal, Quebec, Canada. it's -15 (Celsius) outside right now(http://www.weatheroffice.gc.ca/city/pages/qc-147_metric_e.html) and there's a foot of snow on the ground. Hauling a bulky multi-function printer outside really isn't high on my list. And, if I tried that, my wife would probably kill me if she saw her vacuum outside!

John

Author

Commented:
MASQUERAID: the horizontal bars are approx 38 mm apart. The Service Manual (thanks for that!) says that print defects at 37.7 mm intervals are due to "Toner/developing cylinder" or "Toner/primary charging roller".  

I didn't see what to do about it... Does that mean that both cartridges are defective?

John
Most Valuable Expert 2013

Commented:
No it sounds like during the first change over toner has leaked into the machine and it's on one or other of those sites. Currently whatever cartridge you put in you're going to get the same problem. It should be fixable with some cleaning but not sure how much you need to take the thing apart. I've never had to play with the 3000 mfp's so give me a while to look through the books! In the meantime the Service Manual is your friend, look at the paper path and particularly around the charging roller - watch out - high voltages around there!
Most Valuable Expert 2013

Commented:
HP have kindly provided a cleaning mode (p59 in manual)  :)
This should pick up most of the spill.

Author

Commented:
Thanks MASQUERAID. I tried that. It starts, loads the paper (no transparency film here...) and starts the cleaning process. After a couple of minutes, I get:

Printer Mispick
[Enter]To Resume

When I press [Enter], the display clears, then repeats the "Printer Mispick" message continuously. I finally removed the paper out the back and printed without any problems (except the horizontal bars, of course).

I have never had a "Printer Mispick" on this printer before. So I am not sure what to try next...

John
Most Valuable Expert 2013
Commented:
Not too worried - it's expecting transparency acetate so won't have grabbed the paper as quickly as expected (- BUT you may have toner on the pickup wheels)
Aplogies - now read your original post and see you'd been through the cleaning.
 
If you still have the cartridge that you originally changed out does that have the same problem now?
I'm now thinking that it may be worth taking out one of the new catridges, pulling back the spring loaded roller cover, and checking it for toner lines (manually rotate the roller to check and wipe clean with alcohol wipe if there is toner on there.)

Author

Commented:
Thanks again MASQUERAID.

Re Apologies: no worries...

Re the old cartridge: I keep them until I have 5 or 6, then ship them to HP Recycling. So I put it back in, pressed the copy button with nothing in the scanner ... and it printed with no horizontal bars!

Re "manually rotate the roller to check and wipe clean with alcohol wipe if there is toner on there": I just did that (very carefully, as I didn't want to mangle the three sided plastic "nub" where the motor ass'y engages the toner ass'y). I could see not toner on the drum ... and I am prrty sure that I turned it more than one turn!

Do you have any other ideas on this?

John
Most Valuable Expert 2013

Commented:
hmm ... despite everything said above then it could be a problem with your cartridges - do you have a third with a different batch number?

Author

Commented:
No, I buy two at a time... I guess I'll call HP tomorrow!

Thanks for your help,

John

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