Question about Canon PC980 PC920 PC940 PC950 PC960 FG6-3720 Fuser Assy

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My canon pc940 suddenly prints copies with a dark stripe running down the middle of each page.

This problem has occurred suddenly, without warning. The machine is not used that often but has always run flawlessly, until now. Thanks for your help.

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  • Contributor
  • 11 Answers

On your computer open the menu for your printer. Somewhere there you will find an icon that initiates a cleaning procedure. It usually takes just a few minutes and the printer wil go through the cleaning procedure on its own.

Posted on Jan 04, 2013

  • J Davis Jan 05, 2013

    thanks for the suggestion. However, the pc940 is a stand alone copier, not a printer, so there's no automated cleaning procedure I'm aware of. Any other solutions?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 52 Answers

SOURCE: No ink

hi i am a certified Canon repair tech for this fax. the problem that you are having is very common and has to do with two things. the cartridge and the purge/cleaning unit. what you can try is this open the printer and center the carridge unit and remove the cartridge. unplug the machine while it is still centered. on the right hand side you will see the purge unit. in the center of the purge unit is what looks like a retanglar pad. mix a water soap solution and apply to pad just soaking it. let it sit for a few minutes. take the ink cartridge and wipe the bottom of the cartridge with a damp soapy cloth. also if you look at the cartridge there is a little breating hole you can hold a cloth on the bottom and gently blow in that hole it will purge ink through the bottom of the cartridge. install the cartridge in the machine close the front door and replug in the power cord. you might still have to run a few cleaning cycles. hope this helps.

Posted on Jan 05, 2008

old marine
  • 1973 Answers

SOURCE: paper has dark marks down middle

If you make a copy, does the copy have dark areas down the middle of the page? If so, remove the toner cartridge and gently roll it around to redistribute the toner inside, maybe even replace the toner cartridge if you've had it a long while. If you still see unevenness, you may need to have the machine looked at.

If the copies you make on your machine look fine, then I would suspect that the person sending you the fax has a dirty scanning element. Check with them to see if they can clean the scanning element and it should improve the fax quality.

Posted on Oct 24, 2008

old marine
  • 1973 Answers

SOURCE: Canon B640 printing problem

The scanner lamp is not working. When making a copy, the lamp lights the source document, so if there is no light, the source document 'looks' black. Your machine will need to be serviced.

Posted on Jan 26, 2009

  • 1602 Answers

SOURCE: Canon pc981

either dubree on the rollers or on the corona wires, wires clean with acalohol and q-tip, very carefully or you will brake the fire, look where the line is at and open the machine and locate where the issue is and remove and clean this area very carefully.

rod

ps
type in address bar
canon pc981 l170 a mark down the middle of paper
enter

rod

Posted on Feb 06, 2009

SOURCE: RECEIVED FAXES AND/OR COPIES PRINT ONLY HALF PAGE

Don't know that machine all that well, but it sounds like the laser filter glass may be dirty, or the laser unit. It seldom happens, but did you by any chance blow it out with compressed air?
Anyway, you may try taking out the toner cartridge, and if you tilt the machine upward you should see a sort of 'filter glass" above where the cartridge sits that allows the laser light to pass through from above. try cleaning this with a cloth, and hopefully that will solve your problem.

Posted on Mar 10, 2009

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Faint horizontal dark line about 2 1/8 inches down from the top


Hi,

You can easily fix this yourself, one of the quickest ways to fix it is to print 10 doublesided blank pages and it will clean the inside of the machine for you and the line will vanish.

For further print quality problems on this machine follow these instructions to troubleshoot.

When troubleshooting image quality problems, it is important to understand the situations in which the problem occurs.

Print a copy of the color test pages to determine whether the problem is in one color or more than one color.
  1. Press the [Up] or [Down] arrow button on the Control Panel to select [Troubleshooting] on the Display Screen, and then press the [OK] button.
  2. Press the [Up] or [Down] arrow button to select [Print Quality Problems], and then press the [OK] button.
  3. Press the [Up] or [Down] arrow button to select [Color Test Pages], and then press the [OK] button to print the test pages. If the problem occurs with one color on the test pages, perform the solutions for this problem. If the problem occurs in more than one color on the test pages, restart your search and select a case for the image quality problem occurring through all colors.

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