Question about Xerox Phaser 7750DN Laser Printer

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Phaser 7750 when i shot the job the machinne reboot

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  • Anonymous Dec 04, 2007

    Papaer jam at the fuser. R/R'd the fuser but it did not fix. R/r'd exit transfer unit, still have the problem.

  • oorbigwilly Dec 17, 2007

    Our Xerox Phaser 7750 reboots ( restarts ) by itself, all day long. Anyone have answers - please help. Used on a Mac and PC network with Macs running 10.4.11 and 10.5.1

  • mac-therapy Dec 27, 2007

    I manage a few 7750's and one printer started rebooting when we upgraded to Quark Xpress 7.3.1. Updated the firmware and PPD's from the Xerox website and it reboots 50-90% of the time a print job is sent. More often it reboots from our two Intel based computers and not the G5's. Not sure if this detail helps. Xerox repair has come out twice in the past week and replaced parts but it still hasn't fixed the problem. They did offer a configuration solution but it still reboots. Via web interface go to Properties -> Protocols -> TCP/IP turn off SLP and DDNS.

  • Anonymous Apr 23, 2008

    I now think it is related to the Mac OS 10.5 spoiler. Everytime that two jobs or more
    are sent concurrently from different computers (one using 10.5 &
    one using 10.4), the Printer reboots. It looks like there is a data
    jam, than the printer don't know how to handle the data.. and reboots.
    Some sort of priority conflict.



    I had the idea to lock the reboot fonction of the printer with a password to avoid it but I can't find the way.



    If anyone know how to lock the reboot with a password, let us know...

  • Anonymous May 05, 2008

    reboots all day long even with no files being sent to it.

  • JRPglen Oct 02, 2008

    We have the same problem (7750GX) and tried absolutely everything except resetting NVRAM. We believe it is a chip on the main board

  • sami mohamme Oct 20, 2008

    I have Same Problem With Phaser 7750 ( Restart when Processing Job )

    I tray to Replacement the Processor Board & Incremnt the RAM

    Give Same Problem .

    Pls Inform us If you have a new Solution

  • magnusp Oct 21, 2008

    Same problem here. 
    Anyone talked to Xerox about all this?

  • dspiv Oct 31, 2008

    I have had the same problems and worse. Started off as an apparent problem when printing from a Mac. But then it would get stuck in a reboot loop. I would turn it off and unplug it. And sometimes it would still go into a reboot loop. I would have to turn it on and off several times. I tried to print internal printer pages like a configuration page... sometimes it would go into reboot loop there too! So clearly it's not a printing from the MAc issue. I have tried all the suggestions here. Including resetting the NVRAM and the whole printer NVRAM. Neither worked. I bought an EEPROM, but it apparently was the wrong one - bought the EEPROM base which is more like a battery. I tried swapping it anyway - did nothing. I had tried updating the PS Driver to 5.06 as was suggested. The printer would **** out and get caught in a reboot loop every time I tried. I gave up and bought a used 7750. A new motherboard is $1500 or so. New RAM was also suggested to me... that's another $1500. It was cheaper to buy a machine coming off of lease with consumables that still had value. I would still like to figure this out so I would have 2 working machines.

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At work we have had the same problem as some mentioned below, the printer rebooting when going from 10.5 to 10.4 Macs and Windows comps. After around 3 months of stuffing around we have finally fixed it using this file download:
http://www.support.xerox.com/go/getfile.asp?objid=69002&EULA=1&Xtype=download&uType#suppplat

To install it just typed the IP address of the printer into web browser, chose Print>File Download>Choose File and then hit the green button.

Hope it works for others also. So far I have been unable to make the printer crash again printing from the different platforms.

Posted on Dec 23, 2008

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We had this same issue for 8 months. Download and install the firmware update. That'll do it. http://www.support.xerox.com/go/results.asp?Xtype=download&prodID=7750&Xlang=en_US&Xcntry=USA&source=XOG&prodName=Phaser%207750

Posted on Oct 02, 2008

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I had this problem yesterday with the xerox 7750. This was the situation:
When printer is switched on, it prints a start up copy but while processing to print the copy, you can navigate between the current menu on the screen and just after it finish printing, you can no longer navigate the screen as it seems as if it has stopped responding and then the machine switches off and restarts again in a loop.

To resolve this problem I took these steps:
1. restarted printer
2. While it was processing to print the start up page I cancled the job using the cancel button and doing this allowed me to be able to navigate and also see other menu like printer troubleshoot etc
3. I navigated to network settings and reset the network configuration, reset NVM Ram configuration and rebooted printer each time. but do note that each time I rebooted i performed the steps all over again from steps one.

After all these, check the start up page of the previous prints it had done and the new one it has and you would find out that the network configuration is different and that solved my problem.
Printer has been functioning properly.

Please, try at your own risks.

Thank you and hope this might help some pple out there.

Posted on May 15, 2009

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This isn't a solution... just a narrowing of the cause. I purchased a used 7750. It tested fine, but the color is way off, can't get it right. So I figured I would take this motherboard and put it into my old 7750 that was having the reboot problem listed here. My old printer works with the swapped mother board. So it is definitely something on the motherboard. Problem is, the color issues from the use done I bought, transferred over with the mother board. Some people have suggested the EEPROM, also RAM and Hard drive. I switched the EEPROMs and switched the RAM to to the old printer motherboard. Restart problem still exists. So it's neither of them. I am going to swap the hard drive next. If it's not that, there really isn't much else I know to try and will give up.

Posted on Nov 10, 2008

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We are having the same continual reboots with no cause although even more so since a tech came out to redirect all of our computers to a new server which is very strange. We tried everything...update drivers (even generic), addresses, tried different applications etc., etc.. I didn't try resetting NVRAM although I believe at this point it is a chip on the main board.

Posted on Oct 02, 2008

  • JRPglen Oct 07, 2008

    Tried to fix the constant restart that orbigwilly responded to although it seems to be an outdated firmware update. The newer update is only found through the "support" tab using  "CentreWare Internet Services". 



    Update the Printer's Firmware (Macintosh Printing Only)

    Note: Firmware file will change the printer's firmware to PS (postscript) 5.0.6. This new firmware is the same as previous PS 5.0.2 version with one additional patch for the printer restarting intermittanly when being printed to by a Mac OS computer.
     

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Same problem here going on for months now. Mixed mac / pc environment and started happening around when Leopard went into the environment. Just crazy that there is no solution for this yet.

Posted on Sep 04, 2008

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From the printers web page, try seting static ip address, turn off all unused ports. In your printer driver set the port as LPR or tcp/ip configured with port 9100 or lp with byte counting enabled.
A faulty file can cause the printer to roll over. Are you using a postscript driver? Try using a PCL driver. Reboots cannot be blocked as this is a bailout for the printers logic. As for continual reboots with no cause - replace eeprom (little lack IC chip with 8 legs) on main board (top of machine)

Posted on Jul 05, 2008

We did the SLP and DDNS turn off but the reboot problem is still there. I think it is related to QuarkXPress under Mac OS 10.5.

I had the idea to lock the reboot fonction of the printer with a password to avoid it but can't find the way. Maybe Quark send some kind of order to the printer to reboot itself?

If anyone know how to lock the reboot with a password, let us know...

Posted on Apr 22, 2008

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Via web interface go to Properties -> Protocols -> TCP/IP turn off SLP and DDNS. This fix was suggested by Xerox.

Posted on Dec 27, 2007

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In the print settings select "Print as image" and make sure "Fit to page" is also ticked, if printing from a Mac then this can be found in the pull down menu in the print window and selecting "Acrobat Reader 4.0" then make the same selections as above.

Posted on Dec 19, 2007

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  • Rick Kasper Dec 19, 2007

    check your print driver settings that should do it.

  • Rick Kasper Dec 19, 2007

    If that doesnt work...



    Execute a PostScript NVRAM Reset from Service Diagnostics/NVRAM access

  • Rick Kasper Dec 19, 2007

    Or select a new driver from xerox.com

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1 Answer

How to clean phaser 7750


Included general maintenance video and how to clear smears from the paper.

Solution: Remove Print Smears / Printing Fuser Cleaning Pages
7750 Support Knowledge Base Remove Print Smears Fuser Cleaning...

With Troublshooting highlighted on the printer display perform the following steps:
  1. Press OK.
  2. Press the Down Arrow and scroll to Print Quality Problems.
  3. Press OK.
  4. Press the Down Arrow and scroll to Remove Print Smears.
  5. Press OK. The printer will print 5 cleaning pages.
Repeat this process five or six times, to remove stubborn toner buildup from the fuser.
Always make sure you are matching the type of paper loaded in the printer tray(s) to the correct Paper Type front panel setting. When you load a tray with paper, the front panel will ask you to indicate the type of paper you loaded. For correct print quality and printer operation, be sure to set this correctly.
MAINTENANCE:
Phaser 7750 Video Instruction Maintenance for the Printer Phaser

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XEROX PHASER 7750 7760 FAN ERROR.


Hey guys this is a Xerox Phaser 7750 and 7760 fan error video tutorial.
In this video you will learn how to fix the error code 48 on the Xerox phaser 7750.
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1 Answer

I have xerox phaser 7750 by mistake i bought 7760 yellow toner shall install it to 7750


Not yet, check with the supplier and ask if it is compatible with the 7750, if not then exchange the 7760 for a 7750 yellow toner cartridge. Once you open the cartridge the supplier will not exchange.

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How do you reset toner counter on phaser 7750? Thanks


On the back of the 7750 toner there is a metal piece you can push in near the end that goes in to the machine first, this will tell the printer that the toner you put in has not been installed until now. I would not suggest doing this unless the toner is full and is using geniune xerox 7750 toner.. If you refill it with generic or non-7750 toner it can damage the machine and will void any warrenty you may have left on the machine.
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Somehow you jarred the fuser. Turn the machine off and reseat the fuser. Open the left side door, there will be 2 thumb screws.
Remove and reseat the fuser, if that doesnt work you have to replace the fuser.

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it,s all $$ wherever you go ?
If you can find which wires contact ( Make/Break ) possibly with a multimeter. Remove the sensor, join the wires. tuck it into the inside of the printer.
tape it up to avoid any shorts.
Mike @ compurepair.

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