MA4000cifx Black bands

[nathicana]

This is a new MA4000cifx with intermittent Black bars that are roughly the same size when they happen.

It looked like a loss of main charge to me. I switched the black drum with the yellow drum to see if the problem changed, it didn't.

I've only seen black bars, not colored even when doing full color prints. I don't think it has happened in full color mode though

2754_001.pdf

I called Kyocera and the suggestion was the high voltage unit 302YJ94130. I ordered one.

[ihatefinishers13]

Just curious, did you try and use a loupe to check and see what is making that black band? Yes, it looks black, but there could be other colors making it up. Very strange though!

[blackcat4866]

There is only K in the posted sample, but it might be a monochrome scan. =^..^=

[Ropariva]

[Dark Helmet]

That sure looks similar to the 7003 with a damaged drum and transfer belt.

drum and transfer 7002.jpg

[nathicana]

Thanks for the replies.

I replaced the High Voltage board, did not fix the problem.

My co worker inspected the black areas and did not find any C, M, or Y colors.

I hadn't considered the transfer belt but I'm open to anything.

I appreciate any troubleshooting ideas

[Dark Helmet]

Thanks for the replies.

I replaced the High Voltage board, did not fix the problem.

My co worker inspected the black areas and did not find any C, M, or Y colors.

I hadn't considered the transfer belt but I'm open to anything.

I appreciate any troubleshooting ideas

On the 7003 you had to do the drum and belt as a pair. If you did just 1 the problem returned.

[nathicana]

I called Kyocera and asked them to send us a replacement machine. They were nice enough to do that, it arrived today.

If anyone finds the solution to this problem I'm interested. I didn't want to buy any more parts so I never tried a new(er) transfer belt and drums.

[toddanderson]

This is a new MA4000cifx with intermittent Black bars that are roughly the same size when they happen.

It looked like a loss of main charge to me. I switched the black drum with the yellow drum to see if the problem changed, it didn't.

I've only seen black bars, not colored even when doing full color prints. I don't think it has happened in full color mode though

[ATTACH]n1572589[/ATTACH]

I called Kyocera and the suggestion was the high voltage unit 302YJ94130. I ordered one.

Has anyone else seen this black band ? I have a machine MA4000 doing the same thing, very random the black band shows up