Hi all. I have a problem with this printer. It prints 3/4 of the copy black. 1/4 is ok. I cleaned the drum unit's contacts but same thing happens. where should i check? Thanks in advance
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Re: Oki B4400 black copy
Could be a charge roller problem. I would replace the drum unit. -
Re: Oki B4400 black copy
The problem is that the drum unit is really expensive. I'm trying to figure out what exactly causes this malfunction to the printer.Comment
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Re: Oki B4400 black copy
If the drum is not charged by the charge roller, the image will be black. Maybe the charge voltage is not stable. Check if the charge roller makes good contact with the drum. Be carefull when you try to open the drum cartridge, you can make a real mess when you're not carefull.
If possible, try to post an example here.Comment
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Re: Oki B4400 black copy
Hi. I cleaned the drum unit, especially the charge roller and it worked like a charm. many thanks eric. I owe you one.
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Re: Oki B4400 black copy
I hope it lasts for you, but my experience tells me you'll be back. =^..^=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 =^..^=Comment
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Re: Oki B4400 black copy
Blackcat, what do you mean? The drum unit has 99% life remaining. I dissasembled the whole printer and it had toner everywhere. The toner cartridge was refilled and poored everywhere. My guess is that in this case it was a problem of imperfect contacts. But maybe u could help me out a bit here and share your experience with me and the rest of the forum. I will surelly be gratefull.
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Re: Oki B4400 black copy
My experiences with primary charge loss are not specific to your model Oki. Usually once it starts arcing or losing contact, just cleaning or re-assembly is not a long term fix. My understanding is that these drum units are only sold as assemblies. I think the problem will probably come back, and you'll have to replace the drum unit. One can hope for the best ... but I just don't think you've seen the end of this yet.
=^..^=
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 =^..^=Comment
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Re: Oki B4400 black copy
An Oki b4400 is priced at around 100 euros here. And the drum unit costs 150 euros. So the obvious is that instead of buying a new drum unit, i might as well buy a new printer.
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