Question about Sharp FO-4400 Fax

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Polygon Motor Error

Machine makes load noise and comes up with this error is it fixable?

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If you can get to the laser, it's a black box usually, you can oil the mirror shaft.

Posted on Mar 04, 2009

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I have a Konica Minolta C6500 and I have error code C4717 what can be done


Index sensor output does not
change by the execution of
APC. Index sensor cannot
detect the laser because the
polygon mirror does not rotate,
or because of the index sensor
out of position or defective index sensor

Basically the (Black print head/LASER UNIT/Write Unit) for Black drum is causing problems internally. Inside the unit the Index sensor output does not change by the execution of APC. Index sensor cannot detect the laser because the polygon mirror does not rotate, or because of the index sensor out of position or defective index sensor. Or one of the many control boards is causing issues with Black Laser Unit, such as:

Printer control board (PRCB)
Image processing board
(IPB)
I/F board (IFB)
Image memory control board
(IMCB)
Serious Cost for these boards, recommend a Konica Minolta Tech check this out. Sorry

Nov 03, 2015 | Konica Minolta Bizhub Pro C6500 Printer...

1 Answer

POLYGONAL ERROR / WHAT DOES THIS MEANS AND HOW I WILL REST IT... THANKS


Polygon error. There is a LASER inside the machine which hits a 5 sided minor spinning at about 35000 rpm. That minor is spun my the polygon motor. More then likely you have a bad print head. That is what the entire assy. LASER/motor/Minor/Sensors are called. Power off/then on if it comes back have a technician looks at it.

Feb 26, 2013 | Minolta MF2800 Plain Paper Laser Fax

1 Answer

Polygon error


Bad laser unit, uneconomical to repair.

Oct 22, 2009 | Sharp FO 2950M Plain Paper Laser Fax

1 Answer

Sharp fo 4700 display error ( polygon )


You have a bad printhead unit(laser unit) . The polygon mirror is not rotating within a specific amount of time. I recommend you to replace your fax unless your willing to spend between 200 to 500 dollars.

May 03, 2009 | Sharp FO 5700 Plain Paper Laser Fax

1 Answer

Sharp FO-4650 fax machine


You have a bad printhead unit(laser unit) only if the problem persist. The polygon mirror is not rotating within a specific amount of time.

Feb 10, 2009 | Sharp FO 4450 Laser Fax

1 Answer

I HAVE AN ERROR CODE L6 ON A SHARP AR-163 PDIGITAL IMAGER.


L6 is a problem in the laser sistem. The polygon motor doesn't work. It is reparable if you can get it out of the machine to open it and lubricate it. If it doesn't get ok it can be changed, just the motor and the small printing board. GOOD LUCK.

Nov 25, 2008 | Sharp Fax Machines

2 Answers

Error 77 is apprearing


Unplug the unit.
Hold down the menu key while plugging back in / powering up.
When finished initializing, hit 99.
Wait to status comes back and hit 91.

This supposedly happens due to a power surge or outage.
If this doesn't work for you try reversing the numbers above.
I have a bad memory, it might be 91 first then 99 but, you definately have to hold down the menu key.


Sep 11, 2008 | Brother IntelliFAX 4100 Laser Fax

1 Answer

Minolta Fax 3600


Yeah, pretty much s(****). That message means the polygon mirror in the laser unit is not spinning up.

If you want to try to fix it, it's a square black box under the top covers. You can take it apart and oil the mirror shaft.

Sep 07, 2008 | Fax Machines

2 Answers

I have a brother photocopier DCP-8040/8045D Series. We have a error 7a come up on copier, It started when paper got jammed at ther back of machine and weas pulled out from the back, ever since then when...


Turn off the unit and remove the toner cartridge to visually inspect for more paper. Replace cartridge if necessary. Also the problem may be in the fuser. Good luck and God bless.

Jun 16, 2008 | Brother Fax Machines

1 Answer

Machine Error 17 Brother


I am assuming that you error listed above is actually a "Machine Error 71" not a 17 as their is no such 17 error. The error 71 is a problem with the Polygon Mirror (laser scanner). The scanner is going to require replacement. The part is available at Seattle Platen, Dale 1-800-221-2388.

Hope that helps you.

Feb 21, 2008 | Brother FAX-8360P Plain Paper Laser

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