Konica Minolta C454e - Toner issue

[Kenny]

Hi guys,

We are currently having a few issues with our C454e's. The waste toners on them seem to be filling up too fast which is causing the drum units not to be able to deposit toner in the waste toner and then backs up causing quality and noise issues. A message appears on the machine saying 'replace waste toner soon',even though the clear guide is full. I went to a customer on Monday, i replaced the waste toner and then on Tuesday the waste toner was full of magenta toner even though the customer hardly prints magenta print outs.

Must be something more to this issue, has anyone experienced this?

Machine is on the lastest firmware.

[Gaffers01]

Re: Konica Minolta C454e - Toner issue

Sounds like its just dumping the magenta dev, due to a charge issue.

Do a magenta test pattern are there diagonal white bands?

[copyman]

Re: Konica Minolta C454e - Toner issue

Agree it's dumping. Need to change ANY overlife drums. There is a good chance the over life drums have crashed the developer units and these are very expensive. Do half tone test of each color, if any have diangle white lines then dev dumped.

[srvctec]

Re: Konica Minolta C454e - Toner issue

Replace ALL over life parts and even belt if it has blurry lines towards edges and also replace the plugged toner filter. BUT, while there, the most important thing is to vacuum out all the toner ports on the rear of the inside of the machine where the developer units meet up with.

[stickfly]

Re: Konica Minolta C454e - Toner issue

Hi Kenny,
I've just sent you a message regarding this issue.
Regards ...... G

[Takhnamishvili]

Re: Konica Minolta C454e - Toner issue

Hi guys,

We are currently having a few issues with our C454e's. The waste toners on them seem to be filling up too fast which is causing the drum units not to be able to deposit toner in the waste toner and then backs up causing quality and noise issues. A message appears on the machine saying 'replace waste toner soon',even though the clear guide is full. I went to a customer on Monday, i replaced the waste toner and then on Tuesday the waste toner was full of magenta toner even though the customer hardly prints magenta print outs.

Must be something more to this issue, has anyone experienced this?

Machine is on the lastest firmware.

I had similar problems many times. Replacing DCPU solved them for me.

[copyman]

Re: Konica Minolta C454e - Toner issue

I had similar problems many times. Replacing DCPU solved them for me.

Thanks and will keep this in mind.

I must be lucky because I have at least 75 of the 4 series in opertaion and never replaced the DCPU in any of them. Will probably regret saying this!

[Takhnamishvili]

Re: Konica Minolta C454e - Toner issue

Thanks and will keep this in mind.

I must be lucky because I have at least 75 of the 4 series in opertaion and never replaced the DCPU in any of them. Will probably regret saying this!

It's little surprising but mentioned problem did not occur in other countries, Georgia is only one and I'm sure that this is because of bad environmental conditions. Here are specific customers, it's hard to assure them that MFPs need good conditions to work. So if your customers have good conditions, you don't have to think about it

[copier tech]

Re: Konica Minolta C454e - Toner issue

Hi guys,

We are currently having a few issues with our C454e's. The waste toners on them seem to be filling up too fast which is causing the drum units not to be able to deposit toner in the waste toner and then backs up causing quality and noise issues. A message appears on the machine saying 'replace waste toner soon',even though the clear guide is full. I went to a customer on Monday, i replaced the waste toner and then on Tuesday the waste toner was full of magenta toner even though the customer hardly prints magenta print outs.

Must be something more to this issue, has anyone experienced this?

Machine is on the lastest firmware.

Seen this dozens of times now caused by restricted air flow.

Each time vacuuming out the rear filter channels resolves the issue. (see attached)

You don't have to remove the main drive unit, just all the drums, devs & transfer allows access with a vac.

Failure of Image Unit or Developer Unit.pdf

Premature Developer Unit Failure - Image Unit Failure V2 - copierfirmware.co.uk.pdf

[tsbservice]

Re: Konica Minolta C454e - Toner issue

Most likely it's developer in WTB not toner.
On a side note: If developer damping is due any boards I will suspect HV boards not DCPU.