C450 refreshing the transfer belt

[AVW]

I like to refresh the transfer belt of my C450 as there are some ugly scratches and cleaning with IPA doesn't help in this case.

Could somebody explain me what to do exactly, as I do not understand the service manual completely. Of course I got no "Safety Switch Holding Jig" :-( But I also do not know what "turn ON the Left Door Switch" means exaclty and "wait to finish predrive" like I am adviced from the copier in the "Transfer Belt Refresh mode" of the service mode.

Am I right that the jig is just for switching on and keeping the switch inside in this position? Trying to use something selfmade jig similar to that jig picture at page 35 (4.1 CE tool list) of the field service manual doesn't work so far. The switch sounds like it is switched on simply when I put my "selfmade jig" inside. Or do I need to turn it around and switch something else on? Anyways nothing is happening. There is no "predrive" happening (whatever that means) and the Start button stays orange and does not get green, ...

So could you please tell me how exactly that switch works, and what I need to do to switch it on.
Subsequently the belt should move, and when it is finished, I should be able to move the Refresh Pad up against the Transfer Belt just by loosening that one screw, right?

Thanks!

[Woxner]

Re: C450 refreshing the transfer belt

you cant polish the streaks out on the belt. best you can do is clean it if it has something on it. its surface is too thin to buff. so you will need to relace it.

[AVW]

[copyman]

Re: C450 refreshing the transfer belt

I don't blame you trying to keep the belt you have, they are very expensive. Unfortunately no way to refresh. Like wox said you can clean residue, etc with alcohol, which you did. So only thing left is replace transfer belt. Maybe get it for less $ on ebay. Good luck

[AVW]

[copyman]

Re: C450 refreshing the transfer belt

Don't think you are going to get the answer you are looking for here, because there are NO answers for a bad transfer belt! You have received good advice. The belt has to be replaced!

Attached is procedure to refresh belt. never worked for me.

[AVW]

[AjitN]

Re: C450 refreshing the transfer belt

Every body is absolutely right.
In KM machines you cannot bring the bad ITB to acceptable working condition by cleaning with IPA or other things. If the belt is polished with some cleaning solution, it does not help at all . on the contrary it prominently lifts up defects .Its so thin OR made accordingly it just needed to replaced ( most in other brands say Xerox it can be cleaned or polished with some cleaning solutions helps, but not in case of KM.) Its too bad. Refreshing is only charging Belt xerographically, but not to remove defects
Just replace there is no other better solution.
Hope this helps

[copyman]

Re: C450 refreshing the transfer belt

You have received good advice here sorry it wasn't what you wanted to hear. Time to replace the belt. No way around it. Case closed!

Best of luck.

[AVW]

[AjitN]

Re: C450 refreshing the transfer belt

AVW
I think I have answered the question.
Refreshing ITB is only to refresh OR recovered Belt from light shock.
I mean if belt is exposed to light OR open environment which decreases charging power of belt(similar to drum if exposed to light for long time)
Refreshing is charging the belt to possible normal condition without printing hundreds of copies/prints &
This will not recovered from any defects on the belt.
If you are technical person you will understand what I am trying to tell you.

[AjitN]

Re: C450 refreshing the transfer belt

I think I have answered you.
Refreshing Belt is nothing but charging Belt Xerographically only. Charging belt is like if drum is exposed to light for long time, OR polished/ cleaned with some solution drum surface looses to hold charge, which may take few hundred copies/prints to regain capability of charging. IT WILL NOT ELIMINATE ANY DEFECTS ON SURFACE OF BELT.
Being a technical person I am sure you will understand what I am & all others are trying to tell you.
HOPE THIS IS CLOSED NOW.

[AVW]

[Phil B.]

Re: C450 refreshing the transfer belt

So if anybody can tell me how to proceed such a ITB refreshing (with more details than in the service manual), .

there is NO WAY TO REFRESH a BELT.... REPLACE IT.

switch you will have to reread the manual.

[AVW]