Question about Xerox Phaser 7750DN Laser Printer

7 Answers

Phaser 7750 EEPROM and looping reboot of printer

On one of your posts regarding the 7750 with a reboot problem you had stated replacing the EEPROM as a possible solution. I have a 7750 which I thought was crashing only on printing, but now gets hung up in multiple reboots and won't even go past the warmup cycle. I had tried to upload the new PS 5.06 upgrade but despite several attempts, it never took. It would reboot too early and not finish. I didn't think this would fix it because the printer was rebooting 50% of the time when I would go to print a configuration page right off the main panel. No computer. I spoke to someone at iteminc.com who specializes in xerox. He said he gave it 10% that the problem is the EEPROM, more likely the hard drive or most likely the image processing board (expensive). Do you have personal experience with the EEPROM issue, or is this an educated assumption? IS there anything else you can think of? You seemed to be the most knowledgeable person in the forum. Thanks!

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  • 6 more comments 
  • dspiv Oct 17, 2008

    The printer currently gets stuck on startup in warmup mode. I have to turn it off and on manually a few times to get it to actually complete the boot cycle. I am able to intermittently print pages to it, but most of the time it just automatically reboots. I had already cleared the NVRAM. Didn't work. Tried uploading the PS 5.06 firmware update. Didn't take. Would always reboot and not accept the update.

  • dspiv Oct 17, 2008

    Here we go from the beginning. I was having a problem with my Phaser 7750DN getting caught in a restart loop when printing to it. We are on a mixed Mac/PC network One computer runs Leopard, the rest of the Macs run Tiger. The problem was intermittent. We would print, the printer would start to load the data, then restart, and keep restarting. We would manually click the switch off and wait a while. The printer would come back up, work for a while, then do it again. I had a tech out here. Paid $150. He found nothing because it wasn't doing it while he was here. He suggested a firmware upgrade. The printer currently runs PS 4.04. I have been using it for 3.5 years. 180K total prints. Now on Tuesday, the printer got caught in a fatal loop that it wouldn't get out of. I did a Google search. Found the Fix Ya site and saw some solutions. I tried the ones that applied. What also started to happen is the printer would now crash while printing internal pages from the control panel! Definitely not a printing from Macintosh issue now. I zapped the NVRAM. That helped a little but not much. I then tried to upload the PS 5.06 firmware update. I was unable to despite several attempts. The machine would reboot during the process - when it wasn't supposed to. The startup page still says PS 4.04. I saw a post on the FixYa site which said that if it is not print related it is the EEPROM. I went to order one from a site ITEMINC.com They claim to have Xerox experts there. I spoke to one. He said, more than likely it was not the EEPROM but the Hard Drive or most likely the Image Processing Board which is expensive. So, I am trying to find out what is the next possible step. Is it likely the EEPROM? Something else? The printer is essentially unusable. I need to get it to run.

  • dspiv Oct 17, 2008

    Worked for a minute. I got a few prints out... then restart loop again.

  • dspiv Oct 17, 2008

    Last solution said to remove the RAM. I can try that. He also said to return to factory settings... that's what zapping the NVRAM does. That didn't work.

  • dspiv Oct 17, 2008

    I had tried using Phasersmart and did all the things recommended there. None worked. That included uploading the firmware update, which never took and zapping the NVRAM. The last tech that came out here from an authorized Xerox firm, found nothing. At least if he came now he could see the problem happening. THe issue of course is it's $150 just for him to come out whether he can figure out the issue or not. I've ordered the EEPROM. That is the cheapest solution for now. If that doesn't work, I can try the Fuser. That has more than 50% life left in it

  • dspiv Oct 17, 2008

    One tech suggested printing without the RAM. It sounded impossible to me, but I tried it. Machine wouldn't boot... instant RAM error flashed across the display. Clearly that is not an option. I am not sure if he was the one to suggest the fuser... but if that's the case, then I am not going there. The last tech suggested a faulty power supply. It is an interesting idea, but I don't know how to test for it. I will keep that in mind if I get a tech out here.

  • dspiv Oct 17, 2008

    Thanks for all the ideas. Where we stand: EEPROM coming. I will see if that works. 2nd choice: Fuser. If not that I will call a tech again and have them check the motherboard (if they are able) and the power supply. Open for other suggestions.

  • dspiv Oct 31, 2008

    I DID NOT RATE THIS SOLUTION. NONE OF THE SOLUTIONS WORKED. This is still unresolved. The solution that someone else somehow rated here is nothing more than a definition from a patent application or something. It's useless. I HAVE NOT RECEIVED MY MONIES WORTH.

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HIIII sir finally sir listen these type of thing happens in windows xp or if you have windows vista so its a auto rebooting problem
in case of window we have to install again all the driver and it MIGHT be a hardware problem. My computer did strange things like redetect hardware every bootup when the motherboard was damaged. I got a new motherboard (for other reasons) and the problem with redetecting every startup completely stopped.
Make sure the connections are very secure first of all.




or try to install driver manually not a windows fault try it 

best regards golu_fixya

Posted on Oct 18, 2008

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Hello,

Has anyone mentioned that your power supply for the mainboard may be at fault? What you describe as a set of problems, when applied to a PC instead of a Printer, is very typical of a failing power supply. Lacking that the power circuitry of the mainboard would be faulty.

The power demands for a printer to warm up and then run the machinery for a print job are pretty significant.

I wonder if any of the techs you've had onsite have mentioned the Power Supply is Good.

Have you tried moving the power plug to another socket that would hopefully be on another circuit. I doubt this would have an affect. Still, anything else on the same circuit that could be a heavy drain may not leave a lot of overhead for your printer to use. This is just a thought.

Regards,
Worldvet
PS Stepping out to run a service call.

Posted on Oct 17, 2008

  • Glenn Rogers
    Glenn Rogers Oct 31, 2008

    I just sent you a request that has showed up in your inbox. I suggested the power supply or mainboard. But, I am frankly flabbergasted your support company is coming out without spare parts to use. Weird, and unheard of to me.

    Good Luck, get your money back and get another support company for your printer, its way to valuable to leave in the hands of whoever is sending people out unprepared for $150 a pop.

    Worldvet


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Hi,
PhaserSMART Technical Support is an automated, Internet-based support system. Use your
default web browser to send diagnostic information from your printer to our web site for
analysis. PhaserSMART Technical Support examines the information, diagnoses the problem,
and proposes a solution. If the problem is not resolved with the solution, PhaserSMART
Technical Support assists you in opening a Service Request with Xerox Customer Support.
To access PhaserSMART Technical Support:
1. Go to www.phaserSMART.com.
2. Enter your printer’s IP address in the browser address window.
If you have other questions or problems, click the appropriate PhaserSMART Technical
Support topic to continue.


Thanks
proton

Posted on Oct 17, 2008

  • 1 more comment 
  • Mandeep  Singh
    Mandeep Singh Oct 17, 2008

    As you have told that the printer, is rebooting it self and shuts down on the warmup cycle , the problem is generally caused by the EProm or the motherboard.





    Thanks

    Proton

  • Mandeep  Singh
    Mandeep Singh Oct 17, 2008

    The problem can also be caused by the fuser assembly.

    The following is the video on how to replace the same :

    http://www.office.xerox.com/userdoc/P775...





    Thanks

    Proton

  • Mandeep  Singh
    Mandeep Singh Oct 17, 2008

    Hi,

    Do keep us posted with the solution. All the best



    Proton

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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 Oct 17, 2008

  • mohammed marika thambi
    mohammed marika thambi Oct 17, 2008

    Or select a new driver from xerox.com

    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.


    Execute a PostScript NVRAM Reset from Service Diagnostics/NVRAM access

    ttp://www.fixyourownprinter.com/forums/laser/23029



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Is this question directed against particular expert ?

I am not clear with your question/problem . Please restate your problem .

Posted on Oct 17, 2008

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Try to use the printer removing the memory from the memory bank and then try using it for some time that will diagnose the issue. Please let me know for further T/S.

Posted on Oct 17, 2008

  • Maanita Chadha
    Maanita Chadha Oct 17, 2008

    Try to reset the printer to the factory setting too.

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A printer in accordance with claim 1 wherein the memory controller is configured to provide memory address locations to the processor, wherein the processor is configured to execute executable code at address locations provided by the memory controller, and wherein memory controller is capable of changing from providing address locations in the first mentioned memory to address locations in a plug-in memory while the processor is executing executable code.

Posted on Oct 17, 2008

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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.
Also you will learn how to fix the error codes 010-391,010-392,010-398 that are related to the Xerox Phaser 7760.
This video shows how to remove covers.
All the wires that you need to disconnect from the machine to fix these errors.
There is also another video part two that shows you how to reinstall everything back
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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.

Apr 22, 2013 | Xerox Phaser 7750DN Laser Printer

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How do you reset toner counter on phaser 7750? Thanks


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If you switch machines with the 7750 toner the machine will not know how much toner is remaining in that toner. Xerox changed this method on the 7760 to use a toner chip to fix this.
Hope this helps, thanks

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1 Answer

Problem with my Phaser 7750


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Apr 01, 2010 | Xerox Phaser 7750DN Laser Printer

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Error code 14 ; says cyan sensor malfunction. Where is sensor and how might I clean it?


E-mail me at rak458@aol.com.
I can't post all of it on here.
Just put Phaser 7750 in the subject line.

Jan 15, 2010 | Xerox Phaser 7750DN Laser Printer

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Xerox Phaser 7750 error code 14 & 15.


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Error codes 7-401 to 7-404 are life end for the tray rollers. If no jamming probs then enter diags mode (Back and'i' buttons and switch on) scroll down to NVRAM access and select. find CRU counters and select, clear each tray counter and then exit.

Jun 01, 2009 | Xerox Phaser 7750DN Laser Printer

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Phaser 7700 Accumulator Belt Replaced, upon startup there is an error


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:
1. Clean feed rollers, exit rollers and guides; replace if
necessary.
2. Clean feed rollers and exit rollers only when dust or
debris is visible.
3. Remove and clean all paper trays.
4. Clean the Laser Scanner Unit window.
5. Inspect the image density sensors; clean if necessary.
6. Inspect the accumulator belt home sensor; clean if
necessary.
7. Inspect the fuser assembly; clean if necessary.
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:
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Phaser 7750


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.

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