IR4570 cassette 1 feed roller shaft seizes up and cannot be turned.

[bartman]

I swapped out the cassette feed assembly with another used one but the problem happened again. Anyone seen this? Thx

[bartman]

After looking at another 4570 in my shop I find it hard to imagine the cassette feed motor being able to cause this problem. I wonder if the one way on the feed roller shaft or some other gear in the rear of the cassette feed unit could cause this.

[teckat]

After looking at another 4570 in my shop I find it hard to imagine the cassette feed motor being able to cause this problem. I wonder if the one way on the feed roller shaft or some other gear in the rear of the cassette feed unit could cause this.

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swap in another unit has same issue== could be a harness connection short to ground that freezes M6/

Inspect the Paper pick-up Motor unit in rear of printer(gears, timing belts,pulley ,etc.

M6-M7.JPG
Feeding rollerseize issue

does this happen in #1 & #2 bay

4570 feed.JPG

on print/copy start the M6 turns on> then SL1 for Pick Up Roller is activated
>then paper pick up takes place
4570 feed2.JPG

The paper inside the cassette is held up by the lifter plate. When pickup takes place, the pickup roller moves down to come into contact with the surface of paper. The pickup roller is moved down when the pickup solenoid goes on.
The feed roller and the separation roller serve to make sure that a single sheet of paper is moved to the feed path, and the paper is moved as far as the registration roller by the work of the vertical path roller.

4570 feed3.JPG

[bartman]

The problem only happens in the #1 bay. I hope that I had two used assemblies that had the same problem and that the problem is in the assembly. I replaced the paper pickup assembly again this morning hoping this takes care of the issue. If I have the assembly out in my hands and hold the gear still that receives drive from the cassette feed drive motor, I cannot simulate a situation where the feed roller drive shaft seizes up( it always free wheels in the one direction because of the oneway). Therefore I do not see how the drive motor could cause the problem. Thank you for the response. I will wait and see if the customer calls back.

[teckat]

The problem only happens in the #1 bay. I hope that I had two used assemblies that had the same problem and that the problem is in the assembly. I replaced the paper pickup assembly again this morning hoping this takes care of the issue. If I have the assembly out in my hands and hold the gear still that receives drive from the cassette feed drive motor, I cannot simulate a situation where the feed roller drive shaft seizes up( it always free wheels in the one direction because of the oneway). Therefore I do not see how the drive motor could cause the problem. Thank you for the response. I will wait and see if the customer calls back.

U can simulate a issue on an item that is driven by a clock pluse motor when thr item (unit) is removed from the load ͵ drive is thru clock signals applied to item under a load - M6. Why don't u swap M6 with M7 to test ¿

[Canuck]

Rolls won't turn while in machine? What if you unplug assembly? Try a dcon clear. Maybe brake voltage applied when not supposed to or something. Like Teckat said swap the motors

[northernlife]

First swap the motor's like teck said. Then if it still does it same tray it's a wiring/dcon issue. DCON clear may help too. Dirty power can cause all sorts of wonky things to happen.

[bartman]

Thank you for all the responses. I did replace the pickup unit again and am waiting to see if the customer has the same jamming problem. I am out of town right now but when I get back I plan on putting the assembly that originally malfunctioned into my shop machine to see if I can have the problem happen again.