Xerox phaser 7760 streaking

Try this link:

https://www.support.xerox.com/support/phaser-6110/support/enus.html

There is a snippet on the Xerox website to solve imaging unit recognition problems, link below. http://www.support.xerox.com/support/phaser-7760/downloads/engb.html?operatingSystem=winxp&fileLanguage=en_GB Usually this problem only occurs if the NVRAM has been reset or the engine board has been replaced without backing up the NVRAM. You can download the snippet to your printer through Centreware or by downloading the 'File Downloader' utility from the same page above.
Hope this helps.

The black image unit of your machine should be replaced soon. It is a maintenance item and is very easy to change. They cost about $350 new, but you can buy one much cheaper rebuilt. Here is a video I made to help explain what it is you need to change and how to do it. Good luck

www.support.xerox.com -phaser 7400- support -fault code-941 says cyan or magenta toner failure, but the solution says to
1. remove & reinsert the cyan or magenta imaging units.
2. replace imaging units .
check out the site to see if helpful

If you've already changed out the toner cartridge and the problem persists, then it could be several other parts that are either defective, dirty or blocked.

You may want to contact a certified Xerox technician and have them look at the Imaging Unit Agitator Bar and the Low Toner Sensors for Cyan/Magenta. There could also be a faulty toner supply motor.

Hi armaskopljak:
You have replaced the toner cartridge but you still have to replace the imaging unit which is the drom that the toner cartridge attaches to.
Toner Cartridge OK, Low, Empty When 15,000
(high-capacity cartridge) or
7,500 (standard-capacity
cartridge) pages are
printed (5% print density).
Imaging Units At/Near end-of-life When 30,000 pages are
printed out or when the
pixel counts are
exceeded.
A fuse in the new
imaging unit will blow
upon installation,
resetting the counter.
Verify color calibration. Clean lenses.

Xerox Part Numbers

Toner Cartridges:
Standard Capacity Yellow 016-1975-00
Standard Capacity Magenta 016-1974-00
‘ Standard Capacity Cyan 016-1973-00
Standard Capacity Black 016-1976-00
High Capacity Yellow 016-1979-00
High Capacity Magenta 016-1978-00
High Capacity Cyan 016-1977-00
High Capacity Black 016-1980-00

Imaging Units
Cyan 016-1993-00
Magenta 016-1994-00
Yellow 016-1995-00
Black 016-1996-00
Hope this helps

Hi mgordonO:
The problem is with the toner cartridge or the developer. One or both may be empty.

You need to check with Xerox , ther is some toner that was manufactured last year (2008) that was defective

the phone number for xerox support is 503-682-7377

Hi, Have you checked your cyan imaging unit? 
R

Sounds like the yellow imaging unit it defective to be honest. I know its new, but may be bad out of the box.