Doc 250 IBT belt won't stay center

[copierpro]

Re: Doc 250 IBT belt won't stay center

We did replace IBT with new part number as I understand it 675K72180 the newer thinner belt and not old style 675K18280

[copierpro]

Re: Doc 250 IBT belt won't stay center

Select close at top right of screen and should take you back to main then select machine status button on keypad under the edge of screen. When you get there there should be a machine software icon on screen. Touch that and will show you all the firmware levels. Usually just need to know the cont. version

cont v 1.231.5

[adriansto]

Re: Doc 250 IBT belt won't stay center

Te main problem is the steering roll dont work properly. The steering roll must move up and down ( very little mouvment ) to keep the belt in place.
This mouvment is done by steering cam driven by motor.
The signal to rotate the steering cam is done by belt sensor.
Cause for nonproper operation of steering roll is
bad or no signal from belt sensor
contacts
worn cam, worn motor
deformation of ibt assy
steering roll itself
nvm corruption.

You may try at the end to do iot nvm reset with pws

xerox recommands version 231.16 sw for minimize the 42-3xx faults.

Read your pm
password = leustean

[copierpro]

Re: Doc 250 IBT belt won't stay center

Adrianisto - I ordered a new belt edge sensor yesterday. The motor, cam, rollers - all good. While it doesn't mean a new part form factory cannot be defective it is rare and this machine has only 218K color plus black on meter - hardly used - and all rollers etc are good. The IBT frame is good. Will get the new sensor in tomorrow and keep fingers crossed.

[Milo Wilson]

Re: Doc 250 IBT belt won't stay center

I did have a problem on one and everything worked properly but still got 042-3xx faults and I did the upgrade to 231.16 and that finally took care of it. You are running an older version of firmware so that could be the problem.

[copierpro]

Re: Doc 250 IBT belt won't stay center - fixed

put in new belt edge sensor - presto! Also used a Xerox tech Bulletin sent ny Adrianisto that pointed out roughing up steering roller with a scotch pad is a good idea.

Now I have two cyan lines at bottom edge of 8.5 x 11 (center on 11 x 17) can't seem to get rid of. Looked at drums did clean some contamination off cyan drum that matched what I got on paper.

I've had that IBT in and out so many times I am sick of looking at it so have not looked at it as yet. It is new.

[adriansto]

Re: Doc 250 IBT belt won't stay center - fixed

Ibt cleaner is a possible cause.
Post here a scan of print on A3

And my nickname is Adriansto

[copierpro]

Re: Doc 250 IBT belt won't stay center

As you can see I swapped the magenta drum for the offending magenta drum and got the same result. We did put in a new cleaning blade in IBT cleaner assy prior to putting in a new belt.

I did mess up not paying attnetion while we had belt out one of many times trying to figure out slippage - forgot to put inlet blade back on and when IBT was set back in machine it pput a few dimples on the belt. But the dimples do not match up to lines as shown herein.

[copierpro]

correction

Put the cyan drum in place of offending magenta drum that is holding these lines and got the same result with lines as you can see.

[adriansto]

Re: correction

I see the defect is moving with magenta drum module.
Distance between lines are 40 mm or less ?
I think the magenta drum module is defective.
What color have your drum - blue, green or violet

[copierpro]

Re: Doc 250 IBT belt won't stay center

Adriansto - The drum is blue and I agree with you - need to pop a used magenta drum in there because we are already over budget on the BOM on this one after buying the belt, labor and an exp250 for it. We have drum dusters used with Xerox wide format drums but doubt that will help.

[adriansto]

Re: Doc 250 IBT belt won't stay center

The color is violet for the new improved drum module. Also the drums are very senzitive to light.

[copierpro]

Re: Doc 250 IBT belt won't stay center

Actually this drum is violet. My mistake.

[WIWA]

Re: Doc 250 IBT belt won't stay center

Hey a lot of post here,

If your IBT belt move so far from the center may be some mechanical problem , just in case check for the ball bearings at the charge roller , also use canned spray to clean IBT sensor (no brush) and finally install the retrofit to reduce the incidence of the code 042-326. Reset 741-105 nvm location , after that run IBT belt edge routine from diagnostics just make shure it generates a new table of IBT tracking values.


Hope this help

Sicerely,

WIWA 72

Gonzalos build V. 1.0

[Milo Wilson]

Re: Doc 250 IBT belt won't stay center

I just wanted to note ...I mentioned the edge belt sensor on the 3rd or 4th post of this thread...LOL