Question about Konica Minolta bizhub 250 All-In-One Laser Printer

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On my Konica 7020 I'm getting call factory code F-28-3 when I try to copy. Then the copy sheet gets stuck down on the right side in slot 3 I think it is. Please advise if you have any idea.Many thanks

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F28-3 is a hv error, replace the transfer/seperation unit and the hv casings/ sleeves on the door

Posted on Jun 26, 2009

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F-28-1 curently appears on my screen


F 28-01 High voltage power supply abnormality.
Ihe charging ON/OFF operation has been performed five consecutive times since the charging trouble detection signal was detected at start of charging.If there is a paper in copying process when this jam occurs,the machine stops after completion of copied paper ejection.Verify the charge wire,change and the holders.Check the high voltage unit.
F - 28 -02 Toner transfer wire malfunction
F - 28 -03 Toner separation wire.malfunction

Feb 11, 2013 | Konica Minolta Konica 7020 7022 7025 7030...

1 Answer

F-28-3 Error Sounds Like Gears Binding


this code means the transfer corona is shorting out most common cause is the ts corona terminal on the door needs to be replaced

Sep 22, 2009 | Konica Minolta bizhub 250 All-In-One Laser...

2 Answers

Need Service message for Konica 7020


High voltage circuit board is bad. Have you turn the macine off then back on (wait at least 10 second in between). to reset the machine and clear the code. if that code comes back after turning on and off. then a new circuit board is need. or have a service technician come out and look at the machine

Jun 18, 2009 | Konica Minolta DiALTA Di200 Copier

1 Answer

Call factory code F-28-3


ts corona is shorted could be either the corona wire is broken or the terminal is arcing

Jun 15, 2009 | Konica Minolta bizhub 250 All-In-One Laser...

1 Answer

Konica 7020 f34-4


need to rest code 25 mode dip switch 3-1 should be 0
hope that help
let me know if you need more help with access

Sep 01, 2008 | Office Equipment & Supplies

2 Answers

KONICA 7020 - Blank copy


I have never heard of a developer moving backwards!!!!!!!!!!!!!!!!???
the motor that runs it, the .... there is too much involved to mention. A developper moving backwards will spill so much toner in the machine anyway.
If you get a copy and then it goes blank, that tells me you have a problem with the SEPERATION UNIT, it may be shorting out causing the paper to rise against the drum giving you blank copies.
A blurr copy tells me there is a problem with the Scanner/Optics area. maybe the rails that the scanner run on are too dry or has a problem, the optics(mirrors) may be misaligned.
Not sure what you mean by (hanging) ??

Jul 31, 2008 | Office Equipment & Supplies

1 Answer

Solution for KONICA 7020


E-56 is a main board problem.

Jul 07, 2008 | Office Equipment & Supplies

3 Answers

Konica 7020 fault F28


f-28 codes deal with a corona unit arching.

if its a f-28-1 its the charge corona on the drum unit. more than likely its a f-28-3 though which is a seperation corona arch. these models were notorious for the insulating material that transfers voltage from the machine, to the door then back to the corona would eventually break down and start casuing arching.

what to look for, open the right side door and halfway down you will see a black peice of plastic sticking out that is attached by to screws. this needs to come off, but to get this off you will also need to remove the door opening bar. a total of 4 screws and you can have the black plastic peice in your hand. once off flip it over and open the back cover up. you will see 2 grey peicesof insulating material, one will be burnt the other will be fine. from here on it is up to you as to how you fix it. using an insulating tape that is cut to the opeing is an appropiate fix but it must be able to withstand high voltages. put it all back together and it should work.

Nov 26, 2007 | Konica Minolta DiALTA Di200 Copier

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