C6500 Flipping blade (drum)

[texchar555]

flip

skk, I do agree with you with the blade padding, I added the c500 blade and fulcrums but still used the gold springs. Its been working like a champ. I had one with 2.4 and was flipping every drum 9 in two days.

[doma873]

I heard today that the DU102C will be available soon.

[twinax]

Hi,
The DU102c is already avaliable but only on limited quantity.
I confirm to you that it works well.
You can notice that this drum( DU102C) is already used on C6501 only for black.

Regards,
Twinax

[mick75]

drum blades

we have had this issue over and over again, Konica doesnt have a clue, only thing that has worked for me is replacing the 6500 blades with 8050, nothing else works, not setting powder, firmwear, old blades, streching springs, but the 8050 drum blades work like a charm, I have 32 6500's and all have been quiet for months, no codes, just normal repairs. Trust me get some 8050 blades: don't cut the corners just put them in.

[dudley]

we have tried it all up here, c500 blades,springs fulcrums and still get some flips. DU102B drum from a 6501 flipped in 200 copies. I THINK WE WILL STILL BE GETTING THESE PROBLEMS UNTIL THE LUBE BAR AND APPLICATOR ROLLER ARE MADE 14MM LONGER SO THEY LUBE THE WHOLE DRUM BLADE!!! All the fancy fixes in the world can't lube the last 7mm of the blade for long. The blades are flipping from the end inward.

I think the damn factory has blinders on and are only looking at the blade, not the heart of the problem. If anybody from tech support is monitoring this thread please pass this on to Japan!!!!

end of rant from a very tired 20 yr tech!

[ni311]

Hi,
The DU102c is already avaliable but only on limited quantity.
I confirm to you that it works well.
You can notice that this drum( DU102C) is already used on C6501 only for black.

Regards,
Twinax

The black drum on C6501 it's called 102B and not 102C

[t-rex]

HELLO MY COLLEAUGE, THİS MODEL'S HAS A MODİFY.NEW DRUM UNİT CODE DR-102B.Change new drum unit and solve your trouble.But,other and cheap way, old C-500 drum cleaning blade.Pls try this.

[Haroldbfix]

By now everybody probably is aware of the newstyle blade and blade holders modification.

I moded several notorious blade eating machines and not one has flipped.
Finally a resolution to the madness. Can i get an aman!! :-)

[pspahr]

As the C500 blades are on B/O til April (or later) I tried something different. The pressure springs on the C500 seem to have less tension than those on the C650 so I put them on instead. That machine had flipped 3 PCU's in as many weeks until I put those springs on. 20k and still going, fingers crossed.

[Haroldbfix]

As the C500 blades are on B/O til April (or later) I tried something different. The pressure springs on the C500 seem to have less tension than those on the C650 so I put them on instead. That machine had flipped 3 PCU's in as many weeks until I put those springs on. 20k and still going, fingers crossed.

Trust me it will flip again. I have tried the 500 spring, blade. polishing drums stretching springs and everything else and still no dice. The mode is the only consistant and permanent fix. Im sold on it.

[dudley]

had 2 drums flip yesterday 3 hrs after doing the full meal deal, c500 blades ,springs and fulcrums. Now the good news that we cannot get C500 blades

We were given a new idea today via a customer in Vancouver area. He has 3 6500's running all hours and eating drums like crazy. The guy had a flip in the evening and decided to take a look at the problem. His solution is a simple one, so simple that it may just work! To date he has not lost another drum!I HAVE NOT TRIED IT YET BUT WILL BE DOING IT TO 2 COPIERS TOMORROW!

Lube the drum, remove red screws, now trim the area of the fulcrum where the red screws were so you can see all the hole for the screw, then reinstall the red screws so they act as a stopper so the blade cannot twist any further than where it makes contact with the drum(if the metal part cannot move the blade should not be able to flip). The guy was only putting one screw back in but I think both ends would be better.

I will let you folks know if it works or at least helps.

Pretty bad when we are forced to get ideas from a custumer!

[skks345]

6500 blade flipping

when i posted the fix,using yellow toner and working in to the blades it seemed to work for most of our machines but not all of them.we still had a couple that were still flipping,i didnt try putting the red screws back but did remove the filter at the rear of machine and made sure the humidity level in the room was per specs in the book and it has been working fine.we added a humidifier.when we removed the filter their was a huge difference in air flow(brand new filter).knock on wood so far so good.it has been a week and about 26k later no stalls or flipping.

[dudley]

The problem up here is we just went through 4 days at -35c so there is NO humidity. We usually hit 5-10% humidity in the offices and to humidify some of the print shops would be next to impossible. Had one print shop and they keep the place at 30% but had almost 2" of ice on the windows and doors. Hey but we are going above freezing today,bring on spring PLEASE!!!

[VIJN]

C6500 blade issue

i can not understand why everyone is still having major problems with c6500 drum blade flips. we have been fitting the 8050/c500 drum application rollers [ the black roller in the drum unit] to our c6500 drum units since this problem start last year.we have not had a single drum blade flip with over 300 drum units fitted in machines. the 8050 application roller has a thicker coating hence more lubrication. we have tried the 8050 blade/holders/springs what a waste of time that is. we will keep fitting the application rollers until they [japan] get it right

[dudley]

I would love to try but trying to convince the boss that I have to order in 4 extra Du101 drums for every PM on top of 4 DU102's would not fly. If Japan would issue the damn number and make them available I would be all over it, trust me on that one. In Canada all our parts seem to come in through the states and that adds another layer to the mess. I too feel that this part of the unit is the problem but for a different reason, the damn thing is too short. How can you lube the last 7mm of the blade if the roller doesn't go that far.