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I have an HP Deskjet 9650 and the Encoder disk fell off the end of the rail. How do I get the correct placement on the rail?

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  • kmtgraphics Dec 30, 2010

    This is not the encoder strip, this is the encoder DISK. It sits on the far left outer end of the feed shaft. It resembles a round disc with numbers and a solid area as well. Similar to a timing wheel. It only has 2 way tape holding it to the assembly. It fell off when I was cleaning the unit out. There are no other markings to go by.

  • kmtgraphics Dec 31, 2010

    I have an HP Deskjet 9650, the Encoder "Disk" not the strip has fallen off and I need to know how to put it back in the correct position. The disk is located on the far outside left of the feed roller. It is held on by 2 way tape. The disk has numbers and a dark area similar to a timing disk.

  • kmtgraphics Dec 31, 2010

    How do I align it, there is nothing available? No notch, no markings just a sprocket and the disk.

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  • Master
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Hi.

The encoder disk is the one connected to the motor, and called Paper Motor Encoder Disk. The part mounts on the left end of the pivot and feedroller assembly shaft. The encoder disk rotation determines timing with motor. The disk does not have timing mark alignment procedure specified in service document.

The problem of refitting the disk can be sorted by purchasing and reinstalling the whole disk and shaft assembly. Here the part: C8137-DRIVE_ASSY.

Regards.

Ginko.

Posted on Jan 02, 2011

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  • Contributor
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Try to re-align the enocder disk by putting it slowly at the top of the rail so that the disk will be in proper position. Make sure your printer is off before doing this step..

Posted on Dec 31, 2010

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  • Master
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Hello.

The encoder strip has a slot on either end that hooks on either side, just behind the carriage.

I would suggest to first carefully clean the encoder strip with a Q-tip.

Hope this resolves your problem.

Posted on Dec 30, 2010

  • NinaE Dec 30, 2010

    Oh, sorry. I'm really not certain what to advise you.

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