Xerox phaser 6250 NVRAM Failure

Here is the 8250 service manual. Page 8-4 begins its replacement of the transfer roller. I must assume you do not have a service contract with Xerox elsewise you would be making uus of such. It is unclear whether or not you initially received a 'replace transfer roller" message or what subsequent message you may have received upon a replacement transfer roller being rejected. Perhaps it was simply a repeated assertion to replace the transfer roller. You have indicated being stuck in a diagnostic phase. That would seem to call for a printer reset which includes a power recycling. You might clean the sensors if you keep getting a "replace the transfer roller" message. https://www.fixya.com/support/t127026-phaser_6250_transfer_roller

Xerox_Phaser_6250_Parts_Service.pdf

https://www.fixya.com/support/t526681-xerox_phaser_6250dp_sensor_not_cleaning

Here is your Service Manual. There are 147 mentions of transfer roller. Press CTRL+F and type 'transfer roller' and press enter.

https://www.printerparts-exchange.com/media/custom/upload/Xerox_Phaser_6250_Parts_Service.pdf

..

Try this link:

http://www.support.xerox.com/support/phaser-6250/support-options/enus.html

Clean the rollers. If that does not work, replace the rollers.

I have a XEROX 6200 Printer. I tried to do the solutions above, but I did not have those options in the Maintenance Menu. I pulled out the Transfer Roller Unit and opened up the two screws on top. When I pulled the top, it was loaded with toner. I poured out all that toner in the trash and blew out the rest with a air gun till it was clean. Be careful of the two white gears on the side, when you take off the top. You don't want to lose them. Anyhow, I reassembled the unit back and stuck it back into the printer and the error message was gone. Yeayyyyyyyyy!

From the service manual:

Code 83: Engine NVRAM is corrupted or receiving wrong data from a CRUM.

1 Cycle power to the printer. Does the error still appear? If so, go to step 2.

2 Remove and reinstall the Imaging Unit and Fuser Assembly. Does the error recur
after the power has been turned off and then on? If so, go to step 3.

3 Replace the imaging unit. Does the error still occur? If so, go to step 4.

4 Replace the fuser assembly. Does the error still occur? If so, to to step 5

5 Replace the EEPROM board. Does the error still occur? If so, replace the Engine Control Board.

In the Phaser 6250 Color Laser Printer Service Manual (which I had to have emailed to me from my toner supplier since it is not available to the general public) I went to Chapter 6 - Error Messages and Codes. I had to reboot the printer. Here is the procedure.

Entering by rebooting the printer:

1. Turn the printer power OFF
2. Hold down the Back and Information buttons simutaneously and turn the printer
back on.
3. Continue to hold the buttons until the following message is displayed on the front
panel: Service Diagnostics V#.##, Initializing ....., and then release the buttons.
4. The front panel displays the Service Diagnostics Menu.

On the display is a menu. Find Transfer Roller. Press enter on this menu where it says Toner Waste (Not Full). Back out of the menu.

All of a sudden the machine came to life. You may have to turn off the printer and turn it back on again.

Good Luck

That really sounds like the imaging unit cleaner has an issue.
If you have one try the imaging unit, I really suspect that is your problem.
Black is Faded or Missing Step 1 Clean the Laser Windows and Remove Excess Toner From the Imaging Unit Step 2 Check or Replace the Imaging Unit Gear Retaining Pin Step 3 Replace the Imaging Unit (installation instructions)
See if this link works. Xerox is infameous for these not working.
http://office.support.xerox.com/SRVS/CGI-BIN/WEBCGI.cgi/,/?St=842,E=0000000000019251353,K=6024,Sxi=13,Case=obj(19377)

How Brave is Jan?

Doubt it be the fuser(100 000life), "just magenta dots".... fuser would be "all smudged" or "black marks" , "the print rubs off" , "paper is creasing or jamming"

Can prove it by stopping a print (open door) when paper is1/2 way threw machine, you need to stop it before it goes threw the hot bit, so you can tell if the hot bit (fuser) puts the marks on the paper.

Transfer roller one would expect to effect whole print Smudged/Faint,uneven density

It will be the imaging unit ( 30 000 pagelife Ouch$ ) or possible leaking toner (if aftermarket)

Remove imaging unit and inspect film you should find image of lines, dots are usually chips or sticky stuff on drum surface, carefull no oily human fingers on surface please.

When stopping machine mid print and perfecting your timing, pull out the imaging unit and look at replica of your print notice if marked and where.

Hope this helps

Hi clwest: I hope that this will help you.

Transfer Roller is at End of Life
■ Print the Supplies Usage page to verify the remaining life and Transfer
Roller install date.
■ Cycle printer power.
■ If the problem persists, follow the procedure below
Note
Look at the clear plastic window on the Transfer Roller. If toner is present in the
center of the window the Transfer Roller is at end of life and needs to be
replaced. If no toner is visible, try cleaning the CTD (ADC) Sensor.
The “Transfer Roller is at End of Life” is a warning. “Replace Transfer Roller” is
a hard stop.