A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
Blessed are they who can laugh at themselves, for they shall never cease to be amused.
I don't reply to private messages from end users.
Did you use air to blow out the printer. It's just not a good idea to blow around toner. It has a way of settling down in hard to find places. I would start by cleaning the laser slit glass, and if that didn't help, I'd clean the laser mirrors and polygon mirror surfaces. =^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
The last time I saw background like that on an HP it was refilled cartridges.
It's not a HP cart, but not a refill. I'd done a thousand pages in the old printer with it over 18 months and quality was perfect.
Done another 500 or so since then hoping it would come good, but not happening.
It's 90% full, but if it's the problem I'll replace it.
Didn't blow anything; wiped, but might have messed it up nonetheless.
Just took out the cart and found the metal plate above it rather dusty with toner, wiped that.
Below image of the drum-- obviously has streaks of toner on it. Any point in wiping that? Or would it make it worse? I though it should self clean. Use a cloth with alcohol?
Looked in the service manual, only mention of a mirror is "the mirror in the laser/scanner might be dirty. Replace the laser/scanner".
Not really encouraging for maintenance.
Presumably the laser slit is on this unit? Do I need to take it out to get to the slit?
You should have provided that picture with your original post. That looks like you have a problem with drum cleaning. Could be a damaged cleaning blade, paper scrap on the blade or a build up of toner lint.
Edit: If the laser shield glass were dirty you would get light streaks, possibly even blank stripes.
Last edited by slimslob; 10-17-2021 at 04:11 AM.
The only situation in which you might want to clean a drum is if it had label adhesive on it. I use paraffin lamp oil on a Q-tip, and clean only the smallest affected area, then again with alcohol. Otherwise, yes, the drum IS self cleaning and if it doesn't you'll need another cartridge.
You do not need to remove the the laser to clean the slit glass. It is vertically directly above the drum and is covered with a mechanical shutter. Remove the toner cartridge and move aside the shutter to clean the glass. Use glass cleaner or alcohol on a shortened Q-tip
To clean the laser you must remove the top cover. The laser is right on top. It removes with a few screws and a few harnesses. Take care with the ribbon cables. It comes apart easily to clean the mirrors, especially the polygon mirror surfaces. NOTE: Do not remove the mirrors from the laser! Clean them in place. It's not as difficult as it sounds.
=^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
PCR Roller inside toner cartridge (if a compatible HP cartridge) must be shot
Defects are simple, our mind is complicated
All you need to do is simply replace the toner cartridge.
Only use genuine HP & you will never have this issue again.
Let us eat, drink, and be merry, because tomorrow we may die!
For all your firmware & service manual needs please visit us at:
www.copierfirmware.co.uk - www.printerfirmware.co.uk
Yeah, that seems likely. I asked in the manuals forum for some docs on the cartridge and got a remanufacturer's manual.
That included a list of common problems:
Which describes the printout pretty much.Originally Posted by UniNet Imaging
I assume the dirty drum is consistent with this.
Since this happened after I moved the previously good cart to a "new" machine my assumption was that the problem was the printer. But I guess transferring the cart somehow damaged it. Maybe a poor electrical contact.Though I've taken it in and and out of the first printer dozens of times to clear jams.
I've had a few carts broken out of the box, but none that have failed in service before.
This shows the slit glass, I think? On the top of the cart; no shutter though. The only shutter is on the bottom, over the drum.
A smear of toner on the left. Cleaned it but print quality not improved. Still plenty of toner marks on the drum. So this is a symptom, not a cause.
So: seems clear the problem is the cartridge, so will replace.
If my wife allowed me to keep the old printer and its cart I would have been able to swap it in to confirm, but such are the constraints of working from home...
Might try to crack the cartridge. Probably can't fix it without new parts but it will be educational.
I'm sure that's true, but the HP cartridge is A$379.97. Compatibles are $25-$35. In 30 years I've only had a few issues with non-HP carts, so I accept the risk. Larger businesses may have a different calculation.
But found someone local reselling a genuine HP cart almost as cheap, so will see if I can get that.
Thanks all for the advice.
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