irc 5151 copy quality

[hemai2005]

The root cause of smearing ITB is dirt in the internal secondary transfer rollers bushings. This is the thin rubber roller on the ITB's lower side. It has two plastic bushings and dirt (from a leaking drum) makes it run heavy. The itb drive roller (big rubber roller on the side) pushes the belt towards the sec. transfer causing the belt to fold/bend to to cover.

So replace the ITB, clean the ITB Assy, esspecially the drive roller with rubber cleaner and don;t forget the sec. Transfer rollers bushings.

Then finaly bend the ITB cover so that is rests a few mm lower.

Imho i think this is the best solution, the cover mod sucks.

that's right

[srv]

This is your problem 100% maybe!!??


[ATTACH]7292[/ATTACH]

100% right.I thought I had replied with a thank you before christmas but obviously not.So here it is THANKS A LOT.MUCH APPRECIATED!!.I fitted the mods and haven't heard anything since.

[teckat]

Thanks guys,will order same tomorrow.

Better fix-
Take those metal plates and throw them in the Garbage

they are useless/ am testing this theory at an in-house account on 14 iR5185's {same model as your 5151}
no CQ issues in past 3weeks with heavy color volume

[anothertech]

teckat, I thought about tossing them too. Let us know if any negative effects show up. I'm going to start removing them, those ITB belts are expensive.

[teckat]

teckat, I thought about tossing them too. Let us know if any negative effects show up. I'm going to start removing them, those ITB belts are expensive.

will let u know,
the main purpose of plates was dissipate charges that build up on ITB unit through that varistor, we all know this does not work

The large metal plate is the biggest cause/ I have 4 of the printers with the small plate left on to test/ the other 10 I have all plates off/ Leave on the Varistor as shown below


Remember keep the varistor on ITB with those two metal screws- screwed back in to position on plastic ITB frame

Varistor.jpg

[vigour]

You"re the man, bro.