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ok, thanks. I tried it and it wouldn't get past communication error, I thought it would work, in theory. Unless I have two broken main boards, which is a possiblity.

If I used the main board from the c9800 and put the HDD and the eeprom from the es3640 on it, would that work? And not change over the key chip, or anything else?

It wasn't the transfer belt, I took out the main board and swapped it into a c9800, and now the c9800 prints with exactly the same error - so the problem traveled with the main board, which means it...

Thanks, that's easy to check, I'll have a look.

we moved an es3640e that was working fine. After it was moved I tested it and there were big problems, the pages had a solid block of cyan for the background and the magenta running in long bands. I...

I'm looking at an old C9800 GA with only 10,000 prints on it, it has a new set of OEM drums and toners, and is printing perfectly, only it was until a few days ago when a couple of times it came up...

The printer is printing on 250gm card, custom size, which is being creased after printing. The toner flakes off a bit when it is being creased. I know this is a familiar issue with laser printing,...

thanks, yes, all OEM parts. The drum has 10,000 pages on it but has been in there a long time. I'll have a go at taking it apart and cleaning it up, otherwise get a new unit.

This is an old printer but its only done about 10,000 prints. There's a problem at the moment with black toner smear across the pages. I opened up the drum and toner can be seen stuck to the charger...

thanks, I'll look into it.

It's a fairly new machine, that got problems after 250gsm card was put through it that it couldn't handle, the toner would scatter and come off, though the specs are up to 256gsm for this printer. It...

I've noticed when using Blackcat's very useful 10% color prints for the four colors, I will sometimes get a color smear, where the magenta can be seen as a thin cloud smear over the K page. It does...

thanks for the replies, I might not have got the solenoids right, though I was using electrical tape. There might be a custom switch issue too, I'll go over them again tomorrow.

I'm looking at 3 x hp 4250 printers at the same place. With not many miles on them, one at 80,000 and the other two at 250,000. There is a problem with duplexing on all 3 of them. They jam in the...

thanks, I'll try that. The foam pads are all replaced but that didn't fix the problem. The next step is new developer, drum and blade, and I'll look at the laser unit.

thanks for that, yes, I spent some considerable time aligning that cleaning unit onto the rear post, shining a torch up there, I got it in the end. I'm pretty sure those foam pads will be the...

thanks, that's helpful. I'm pretty sure I've worked out the problem, which I shouldn't have overlooked, the foam pads have disintegrated on the cyan and k drum casings, I'll try and get more of those...

I will replace the drums, but I could use a quick fix. Toshiba in NZ don't sell them anymore so I will have to get from Australia. I printed about 30 pages this afternoon and they were clear, the...

the banding has settled down a bit this morning, it's still there slightly, but there's not much in it, instead I'm getting streaks of cyan right from the edge of the paper across the prints, and I...

thanks for that.

the black drum is over, at 132000 counts, and the other 3 are at 90,000, so I guess they could all use replacing.

I was getting speckling near the edges on solid black prints, I took out the drum and found tiny spots of toner stuck to it, so I cleaned it, and that fixed that problem, but it is now printing with...

ok thanks, I'll look at that tomorrow.

I have an issue with streaking on black only, the color blocks print fine. I've changed the drum and it's not that, I figure it can't be the transfer belt or the fuser, as colors are fine, I've put...