Question about Xerox Phaser 7750DN Laser Printer

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I need to replace one of the imaging units in my Phaser 7750 but the one in there seems to be stuck. The other three come out easily but the black one will not come out and I don't want to over force it. Any ideas?

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  • marie860 Jan 17, 2009

    I have checked the chip area and it is all clear there, I have taken the printer apart but still cannot see what is jamming the imaging unit. It can move about an inch or so and then sticks almost like there is a lever or something that needs to be released for it to move all the way out. Any other suggestions?

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What ususlly happens to make those stick is the front portion of the imaging unit, ( drum) gets caught in the socket . That portion of the cartridge has the counter chip in it and often times the clip that snaps it onto the drum pops out.
You can normally take a smaller flat blade screwdriver and slide it between the socket and cartridge and pop it out. I am not talking about using it like a jach hammer LOL but it will notmally pop out pretty easily.
Once you release the bar to drop raise the transfer belt, there is not much to catch it. So I would suspect just that front porton catching.
If the rail has dropped you can open the front cover, then open the small drawyer on the right side of the machine. You will see a handle that removes the transport belt. if you want to remove it. MAKE SURE you drop down that bar on the front of tha machine that you release to remove a drum. Then on the left side of the transfer assembly, there is a little tab that you have to realease once you get the transfer out about 4 inches. Then slide it out and set it down on a flat surface. When you remove that you have pretty open access to the drums and can get a flash light and look to see what holding it up.
When you repalce the transfer assembly, make sure you set it on the rails, to slide it back in. It is pretty easy to get in and out, just make sure you pull that handle down.

Posted on Jan 12, 2009

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POSSIBILITIES

Problem:
1st BTR Contact Failure or 1st BTR Retract Failure Message is displayed after replacing the Accumulator Belt Cause:
A Phaser 7700 Accumulator Belt was installed in a Phaser 7750. The Phaser 7700 Accumulator Belt does not have retractable 1st Bias Transfer Rollers; so these errors will be reported if one is installed in a Phaser 7750 printer. Solution: thumbsup.gif Fixed! thumbsdn.gif Did not fix. Remove the Phaser 7700 Accumulator Belt and install a Phaser 7750 Accumulator Belt. TRY FIRST (Solutions without parts):
1. Check that all shipping restraits have been removed.



TROUBLESHOOTING TIPS AND HINTS:
1. Test the 1st BTR motor in diagnostics to verify proper operation. 2. Test the 1st BTR sensor in diagnostics, then run the 1st BTR motor test and recheck the 1st BTR sensor. Sensor state should alternate between L and H. The sensor is part of the accumulator belt.

PARTS:Parts are listed in the order of highest probability for repair.
NUMBER QTY DESCRIPTION
116177400 1 *KIT IBT - UNIT



REPAIR/INSPECT/PREVENT PROCEDURE:
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necessary.
2. Clean feed rollers and exit rollers only when dust or
debris is visible.
3. Remove and clean all paper trays.
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5. Inspect the image density sensors; clean if necessary.
6. Inspect the accumulator belt home sensor; clean if
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8. Print the Error Log, diagnose and repair any problems as
indicated.
9. Print the Usage Profile, diagnose and repair any
problems as indicated.
10. Check version of all installed firmware; as
appropriate, install the latest version of firmware.
11. Check cleanliness of interior and exterior of printer,
including fans; if necessary, clean (dust or vacuum) these
areas.
Problem:
1st BTR Contact Failure or 1st BTR Retract Failure Message is displayed after replacing the Accumulator Belt

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