Question about Xerox Phaser 7750DN Laser Printer

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Error Code 9-456

I have a xerox 7750, and I was printing and then all of a sudden, it says that there's an engine control board failure. Then everytime I restart the machine, it says error code 9-456, and I can't print on it any longer. Any help? Thanks guys.

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Plz send the printer for repair as the code shows a hardware failure

Posted on Jun 18, 2008

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  • Xerox Master
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This error code means the life of the black developer is at its end. It is probably time to replace all four developers and the only reset is replacing the engine control board.

The costs will come around 1000usd I recommend you buy a new one.

Posted on Jun 18, 2008

  • Ekse Jun 18, 2008

    The engine control board was $690 last year + what your local printer tech takes for installing it, the developer itself was around 300 last year the prices may have changed.

  • Ekse Jun 18, 2008

    as pagebor said, contact your dealer or a serivce center for up to date repair costs and estimates.

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1 Answer

Cyan ATC sensor failure. Error code 14. I replaced developer and did ATC sensor setup. Still having issue.


Yellow ATC Sensor Failure,Code12
Magenta ATC Sensor Failure,Code13
Cyan ATC Sensor Failure,Code14
The ATC Sensor detects an insufficient amount of developer.

Note
If this failure reoccurs three times successively, an Engine NVRAM value is set preventing further printer use until the Clear Tech Rep Fault (see pg.6-20) is performed.

Troubleshooting Procedure
Step Actions and Questions Yes No 1 Is the problem toner and/or developer empty. Replace the toner or developer. Go to step 2. 2 Is the ATC sensor clean and free of dust, toner or any other contaminates? Go to step3. Clean the ATC sensor. 3 1.Check the ATC sensor wiring harness Yellow=P/J129
Magenta=P/J130 Cyan=P/J131
2.Is the wiring harness or the sensor defective? Replace the ATC Sensor and/or wiring harness. Go to step 4. 4 1.Remove the Rear Cover and RearShield.
2.Measure the voltage at...Yellow=P405B3 Magenta=P405B8 Cyan=P405A10
on the engine control board.
3.Is the voltage between+1 and
+3VDC? Replace the engine control board. Go to step 5. 5 1.Measure the voltage at...Yellow=P405B14 Magenta=P405B11 Cyan=P405A11
on the engine control board.
2.Is the voltage+5VDC? Replace the engine control board. Go to step 6. 6
1.Measure the voltage at...Yellow=P405B2 Magenta=P405B9 Cyan=P405A9
on the engine control board.
2.Is the voltage 0VDC? Replace the engine control board.
Go to step7.
7
1.Remove the Imaging Unit Plate cover.
2.Inspect the wiring harness between the engine control board and the developer housing assembly.
3.Is the wiring harness defective? Replace the wiring harness.
Replace the ATC Sensor.
8
Run approximately 10 pages of the solid fill full-page prints for this color to ensure the error is cleared.


Mar 12, 2015 | Xerox Phaser 7750 Laser Printer

Tip

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
in it’s place. Step by step tutorial hope you enjoy.

http://www.youtube.com/watch?v=yMud-Md2xpc


on Dec 30, 2009 | Printers & Copiers

1 Answer

I'm having trouble code 80 for the machine processes the file and not print accuses engine failure''firmware''someone could help me please, I have changed the image processor board and...


hi there

Error Description: Engine Logic Board Failure, Code 80

Possible Solution:

1. Cycle power to the printer to clear the error.

2. Did this clear the error? If, yes problem resolved , if no, replace the engine control board , or,

The image processor board


eng log brd part # required, 160K85653 cost approximate $125

proc brd 650-4306-00 aproximate cost $160



hope this helps -- please send me 4 thumbs up

Jul 10, 2011 | Xerox Phaser 7750DN Laser Printer

1 Answer

Xerox Phaser 7750 error code 14 & 15.


try to hold down the on/reset button a few seconds when you power it up ...on most printers this resets them ..about 10 sec it is enough ...

Nov 26, 2009 | Printers & Copiers

1 Answer

Hi i got xerox phaser 7750 and i have error code


Cheap fix : reset the Developer Life Count in the Service
Tools menu. Hold down the back ARROW key with the "i" them with your other hand turn on the machine.


Expensive fix : What has happen is that the developers have come to the end of the life and once it gets to a certain page count it will print out no more until you have replace the developers. One thing xerox forgot to do is reset the engine control board too for this machine. So you might need a new engine cotrol board too.
Procedure

1. Replace the Developer
2. After the Developer has been replaced, reset the Developer Life Count in the Service
Tools menu.
NOTE: It is recommended that all the Developers and Beads be replaced at one time rather
than on sccessive visits.

Good luck.




Oct 29, 2009 | Xerox Phaser 7750DN Laser Printer

4 Answers

I have a xerox 7750, error code 9-913


This problem occurs when you buy the wrong image unit.
The contact chip that is located at the bottom of the orange plastic is not for the machine. Replace it with 7750 image unit and that should fix your problem. Black is fault 9-910 cyan fault : 9-911 magenta fault: 9-912 yellor 9-913.

Sep 24, 2009 | Xerox Phaser 7750DN Laser Printer

2 Answers

Error code 7-402


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

1 Answer

Xerox Phaser 7750 Fault 9-913


Hi,
Use the following procedure to troubleshoot Error Codes 009-910 through 009-913 
1. Check the installation of the Print Cartridge. 2. Clear the Tech Rep Fault for errors 009-910 through 009-913 (see instructions below). 3. Try changing the indicated Print Cartridge. 4. Check for an open wire or poor contact between the Print Cartridge and the Engine Control Board. a. Yellow, J-151 to J-405 b. Magenta, J-152 to J-405 c. Cyan, J-153 to J-405 d. Black, J-154 to J-405 5. Replace the engine control board
NOTE:  Before troubleshooting for an open circuit (Step 4) or replacing the Engine Control Board (Step 5), clear the Tech Rep Fault for any of these codes first using the following steps: 1. Enter Service Diagnostics. 2. Highlight NVRAM Access and press OK. 3. Highlight Clear Tech Rep Faults and press OK. 4. Highlight link codes 009-910 through 009-913 and press OK.

Hope my info solves your problem..... Thanx for using fixya......

Oct 24, 2008 | Xerox Phaser 7750DN Laser Printer

2 Answers

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:
1st BTR Contact Failure or 1st BTR Retract Failure Message is displayed after replacing the Accumulator Belt

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