c253 help

[Frostwolf]

Ok we have a c253 that had the c-2152 ( I think that's right) code (transfer belt position problem)

I sent a tech with new belt assembly with the updated detection plate to fix it (already had the detection sensor assy put in), he didn't make sure the belt fit flush into the machine, he locked it down with the front an rear guides even though the belt wasn't in all the way, shut the door and then it was all over, never could get the door open on site, the door latch wedged in with the transfer belt handle. We had to swap the machine out.

Back at the shop the door is eventually opened and the belt put in correctly.

Now we have new issues. The first copy out has a brushed effect on black print only with black developer coming out on the first 4 inches of the lead edge of the first copy, and only the first copy, all other single or multiple copies are OK, it won't do it again until we turn the machine off then back on. Take that Black Imaging unit out and place in another machine and it does fine, we put the original belt back in still does it. Put another belt from another machine in and it still does it, same with a new transfer roller, new imaging unit, and even another detection sensor assy. The new IU didn't start putting developer on the page immediately but has started again after about 20 copies.

What is different about the absolute very first copy than all the others afterwords? It does stabilizer at boot up, but running subsequent stabilization's haven't done it.

We will dig further today. I've got 4 tech trying to get this one figured out. Any help would be appreciated.

Oh and a tip "make sure the gears are engaged when you change the belt for heavens sake".

[facatoros]

[Frostwolf]

I understood the part number, and that is installed. It took care of the c2152 code.

Thanks

Any other ideas?

[alfpanasonic]

there is a change of factory, but a new unit of transfer may already be changed. If so, when the machine is in stabilization image, you must open the front door to reset the pressure of the units

[redime]

Fighting the same C2152 problem on a C203 model brother... inspect the machine VERY carefully - pull fuser out, inspect for anything stuck - youll need to pop her open as best you can. Code is for transfer BELT - but check that the fuser isnt blocked up and slowing down. Could also try fuser motor

[Frostwolf]

the c2152 is solved. its the 4 inches of developer and brushed appearance on the first and on first copy.

We have followed the instructions to replace the detection plate, that include the open and close the front door during the stabilization, per the bulletin.

I can't find anything wrong with the fusing section, can't find anything bent. I've taken it all the way down to the frame on the back, and even removed the drive assembly for the dev units. I haven't found anything wrong yet.

[redime]

Have you tried cleaning the belt cleaner yet?

[Frostwolf]

Have you tried cleaning the belt cleaner yet?

Your mean the one on the belt unit? I can't think of anything else. We've tried three different belt units. I've pulled the belt out of the machine at different times, no developer on it. Just the first copy's first four inches. {Pulls Hair}

I'm thinking about swapping the whole right door next. and then look deeper into the drive unit for the belts transfer rollers.

Thanks for the suggestions guys and girls. I'll get a scan of the problem. Maybe that will help. To me it looks like drum and magnet roller brush are not turning correctly. ummm... to be continued

[Frostwolf]

http://www.riverbendcoc.org/c/c253.pdf sample scan

[DadO]

This looks very bad....

I know it will be tought (and even not related to issue u have) for u to check if ITB is laying down on contacts inside of machine.

Static build up would do this. Check the ground leaders of the charger assy and of the right door.( since u told us that that u tried to stop paper before charge assy and there wasn't anything wrong on ITB).

Try to doo gradation adjustment since it will change the voltage

Have a pleasant day whit bizHUB C series

[Frostwolf]

This looks very bad....

I know it will be tought (and even not related to issue u have) for u to check if ITB is laying down on contacts inside of machine.

Static build up would do this. Check the ground leaders of the charger assy and of the right door.( since u told us that that u tried to stop paper before charge assy and there wasn't anything wrong on ITB).

Try to doo gradation adjustment since it will change the voltage

Have a pleasant day whit bizHUB C series

I've checked the grounds on the door, I didn't see anything wrong, I'll take the duplex cover off and check the one on the rear -soon. KMBS told me to change the HV board or the PRCB. I have a hv board to try from a c203. Its fun taking it that far apart on two machines

Not sure how I'd check the contacts for the Transfer Belt.

The contact for the transfer roller on the back (not sure what it does, it has to jump across plastic piece on roller to work ), don't pull on it, a little spring will fall out. Lots of fun putting it back in.

Been to busy to mess with it.

Just a screwy problem, if it did it every copy, it would be fixed by now. But why just the first and only first copy? sheesh...

to be continued......

[Albonline]

This looks like a ground problem with the 2nd transer unit . check the right side door carefully. there are grounding pads on each side. front and rear.

[Frostwolf]

This looks like a ground problem with the 2nd transer unit . check the right side door carefully. there are grounding pads on each side. front and rear.

I've not been able to get back to that machine much yet, but I did see both grounds, I don't see anything wrong with them, they aren't malformed or anything, and touch the frames. I'll get a meter on them soon.

Thanks

[Frostwolf]

We tried an HV board, no good.

Then we tried the PRCB board, so far it seems to have fixed the problem. {Crosses Fingers}

Thanks

[Haroldbfix]

We tried an HV board, no good.

Then we tried the PRCB board, so far it seems to have fixed the problem. {Crosses Fingers}

Thanks

I'm interested in this issue, did the PRCB solve it? I agree very weird problem.