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How do I change Upper roller in Heating unit.

Upper roller in heating unit is damaged.

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  • 73 Answers

First, turn it off so you don't burn your hands. Then, I usually feel around Last, look for a manual on the internet or do a search of the question.

Posted on Nov 30, 2014


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1 Answer

How do i change sleve of hp 2300dn ?

the sleeve you are referring to is the Teflon sleeve located in the fuser unit and is covers the upper heating element in the fuser unit.. unless you are familiar with fuser rebuilds don't attempt it.. you can purchase rebuilt fuser units or brand new OEM units From Precision Roller Part number is RM1-0354-050,or RM1-0354-000

Apr 24, 2014 | HP LaserJet Office Equipment & Supplies

1 Answer


The code means that the fuser unit the hot part which fuses the toner to the paper is not getting the 117VAC or120VAC power to the heating lamps inside the upper fusing roller and or bottom. Fusing unit uses heat and pressure to fuse the toner to the paper.

Feb 08, 2014 | Minolta Office Equipment & Supplies

1 Answer

Fuser unit failure

Yes you can fix the same fuser but you will need advanced skills, this problem can be because you need to replace the upper fuser roller usually is the part that first come damaged, in case this part is ok, check the lower pressure roller, if both are fine, check the heating element, it will be one of this 3 parts.

Aug 16, 2013 | Brother HL 5250DN Laser Printer

1 Answer

When printing or copying the ink can be rubbed off, this is usually down the middle of the paper. Any idea which part is at fault, jets, imaging drum ?

This is a problem with the fusor not heating in the middle for some reason. Either the fusor roller is damaged or the heating element is.
Toner is not like ink, it has to be heated onto the paper.
Take a good look at the roller...if it's not damaged, then the fusor itself has a problem and the unit in either case must be serviced.

Feb 23, 2011 | HP LaserJet 2840 Printer

2 Answers

Fuser upper failure is the message i am getting on my xerox phaser 7300. can anyone help please

Hello, The fuser or fuser roller is what actually bonds or melt the toner on to your paper. There is probably some type of temperature sensor, that senses the temperature of the fuser. If its not hot enough or just plain dead, it will give out an alarm similar to what your getting. You probably need to replace the fuser unit. You have a lower fuser and an upper fuser. You might be able to get away with just replacing the upper roller. The roller has a heating element inside and that's what probably defective.
Hope this Helps
Thank You for your feedback

Jan 31, 2011 | Xerox Phaser 7300DN Laser Printer

1 Answer

It says c then 50

A C5 error code means that you have a problem with the fuser unit. The fuser is not warming up correctly. You will mostly have to replace the upper fuser roller or the upper fuser unit. The heating ubit sometimes arch's though the fuser roller. You will need to resolve the problem before the code clears, you may also have to replace the fuse on a small PCB next to the rear of the copier..... Good Luck

Oct 30, 2010 | Minolta EP1031/1031F CS/PRO Copier

2 Answers

It displays c50 minolta cspro 1030

That error code means that the you have a problem with the fuser unit. You are going to have to replace the upper fuser roller. The fuser roller and the heating unit is all one unit and is known for arching out. Good Luck in finding one.

Aug 21, 2010 | Minolta EP1030/1030F CS/PRO Copier

2 Answers

Error c3921 konica minolta c451 error c3921 not known what to do

C3921: Fusing sensor wire breaks detection (Center of the heating roller)...

• At the warm-up stage, the heating roller
thermistor/3 voltage does not decrease by
predetermined steps (temperature rise)
within a predetermined time.

Check the fusing unit for correct installation
(whether it is secured in position).

Check the open/close operation of the
upper right door.

Check the fusing unit, IHPU, PRCB and
REDB for proper connection and correct or
change as necessary.

If that check still give you error code 3921

Change fusing unit

Mar 16, 2009 | Konica Minolta bizhub C450P Laser Printer

1 Answer

Service code 546

SC 546 Heating roller
fusing lamp
The heating roller temperature
changes by ±20°C or more in
one second. This occurs three
times in one minute or two
consecutive times.
• Loose connection of
the thermistor
• Loose connection
between the fusing
unit and main frame
1. Check if the fusing unit is properly set
and connected to the main frame.
2. Check if the heating roller thermistor
connector is firmly connected.
3. Replace the fusing unit

Aug 19, 2008 | Office Equipment & Supplies

1 Answer

My paper keeps "kinking"

Check the fusing unit.Pressure roller,pressure roller bushings, thermistors for over heating,fuser roller. replace if defective.

Sep 21, 2007 | Toshiba 1370 Black and White Copier

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