SC45-01 on C500 Pro (continued)

[dagoof]

Just thought I'd start a new thread for my on-going saga with the C500. For those who hadn't seen my last thread, I've got a well used C500 and I was getting a 45-20 from it. I can confirm the belt is ok, I put new dev in the dev unit's and all the dev gears look fine. Test charts were producing strong enough print but way out of reg and auto-adjust gave error 2.

I removed the sensor assy and cleaned the windows on PS8 & 9 and now the machine will start normally and even run (out of reg. copies) but when I try to do an auto colour adjust it gives the 45-01. I've tried the 25/3 software switch on and off. Had previously had a problem with the corana's blowing but they're ok now AFAIK. I should note PS9 looked like the window might have a scratch on it (hard to tell) - I think Coptech mentioned, but can the window be popped off or replaced?

One other thing I'm trying to confirm is how to do the manual adjust - after the chart is printed I put it on the platen and hit 'scan' on the touch screen but nothing happens I can go to the 'copy screen' and hit start but thought that can't be right?

Any help greatly appreciated

[albasoul06]

Replace the black (K) write unit

[dagoof]

Thanks Alba - just wondering what you thought points to the write unit (as opposed to the sensor)?

Could anyone tell me about the manual adjust?
TIA.

[milliron]

c500 ripoff

I read your earlier post and sympathize with you. I got ripped off about a year ago on a c500. See my post dead c500 about 2 days ago. Thanks to the response you got on your earlier post I now know how to get mine fired up past the error code so I can continue to work on diagnosing the problems. I'm starting to think the c-500 is a money pit. Maybe if I can get the problems solved I won't feel that way. Hope you get yours working without too much more expense. By the time I change drums and developer again I will be in the copier mor that what I originally paid for it and it still may trash the drums again.

[dagoof]

Thanks Milliron, I hope so too! Problem is I'm already in too deep so can't really afford to 'cut my losses'. I'm sure most would be horrified what I paid for this too - several thousand $$, would have been reasonable at the time had it been as described

[sparkswillfly]

I have had a similar problem before with recurring 45-20 codes and it was due to the transfer belt stalling because of lack of lubrication on the cleaning blade.
Are you using an official KM dusting pouch as Katun style pouches have larger particle sizes and cause the blade to buckle.

[milliron]

c500 ripoff

Thanks Milliron, I hope so too! Problem is I'm already in too deep so can't really afford to 'cut my losses'. I'm sure most would be horrified what I paid for this too - several thousand $$, would have been reasonable at the time had it been as described

I gave 4500 for the c500, bought a515 finisherand have put about $3500 in parts and labor. I don't know whether to cut my losses or keep going

[dagoof]

[Tonerjockey.com]

If you don't have access to a dusting pouch, you can often use yellow toner to get you by. The 45-20 code has multiple potential problems.

1. Color registration failure.
2. The shutter that covers the registration sensors PS8 or PS9 is not opening.
3. Color registration sensors have failed.
4. Failed PRCB.
5. Stripped developer gearsor binding developing unit.
6. The toner level detection sensor located inside the corresponding color toner hopper will register a false full state. The sensor itself becomes caked with toner.
7. Failed Transfer Belt Assembly.

Also, if you get to the point where you get anywhere close to breaking even on this machine. Then cut your losses and run.

[Tonerjockey.com]

Also forgot to add, the 45-01 means that PS8 is not picking up black on the color registration. If the sensor is functioning and the shutter is working, then you likely have a bad write unit. I say likely because it is still very possible that there is another problem, such as a bad PRCB.

Good Luck.

[dagoof]

God, this is turning into a bit of a nightmare

Thanks for the info - do you think, given the info in the 1st post (window might be scratched) that the sensor is more likely be the problem? I'm going to swap PS8/9 round again to see what happens.

(oh, and could anyone confirm about doing the manual adjustment).

[Tonerjockey.com]

Window scratch is possible....but IMO, unlikely. The scratch would have to be pretty significant.

[dagoof]

Ok, thanks TJ - hopefully swapping the sensors over should clarify if there's any issue with them or the shutters/springs.

[HORSE]

Mate I would get a good KM tech in there someone who is in the production Print end of the business, not some one who f**ks around with fantastic plastic toy copiers all week.

[dagoof]

Problem is Horse, I'm in Scotland and C500s are very scarce here, the first tech I got didn't have a clue. The 2nd tech I had was ex-KM and he said there was only about 5 C500s in the country (and that was a few years ago). Anyone I get isn't likely to know much (current) about the machine - better advice of you guys,though I know it's not a substitute for having someone onsite here.