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Continuous message 'Fuser Cover Open' preventing operation of printer. Checked everything taken out and replaced the fuser unit. Had a new message 'Service Error 13' and then went back to 'Fuser Cover Open' message. Any suggestions? Keiron Ford

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  • michaeelcohe Sep 17, 2008

    what is the fuser cover

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6 Suggested Answers

silly girl
  • 513 Answers

SOURCE: Error Code:380

OKI's advice is as follows- Check to see if there is any paper jammed in the tray, if not then examine the tray for damage, if not then replace the tray. I'm not convinced that this advice is enough. Does the error occur at power on or when you try to print?

Posted on Jun 25, 2006

Cops
  • 64 Answers

SOURCE: Fuser Error 50.1 Fuser is hot. What is a fuser?

50.1

A low fuser temperature error has occurred, possibly due to an inadequate external or internal power supply.



this basicaly means that either the dc controller board is on its way out (expensive) or that there is a drain on the power line.
if you have it plugged into an extension lead try plugging it directly into the wall socket. if this fails also try using a different power lead (very easy to get hold of and are normaly called kettle leads)

Hope this helps

Cops
Pete@wedotoners.com

Posted on Oct 10, 2007

  • 208 Answers

SOURCE: Paper jam at fuser

1. Faulty/blocked fuser exit sensor or faulty/blocked POB sensor. The printer thinks paper is present at one of these sensors when there should not be paper present
Verify that the fuser exit sensor is not stuck
If both sensors are working correctly, the most likely cause is the POB sensor is being blocked by the transfer unit. This can happen if the sensor is out of position, or if the transfer unit's white plastic baffle is out of position. Try bending the POB sensor bracket outward slightly to clear the baffle and retest.

Posted on Dec 19, 2007

Soulvisitor
  • 1113 Answers

SOURCE: HP clj 2550n error 50.2 fuser

Replace fuser assembly is the fix
Normal consumable, the lamp electrics (lamp, thermistor) will have blown.
9337832.jpg Part info

Posted on Jan 13, 2008

  • 125 Answers

SOURCE: Fuser Error 50.1 Fuser is hot. What is a fuser?

The fuser bonds the ink powders onto the paper. It is usually located behind the cartridge in the paper path. There may be several reasons why this error shows. (Bad fuser or bad power supply). It looks like this:
http://printerworks.com/Catalogs/hp-supplies/Q3655A-CLJ-3500-3700-supplies.htm

Here is some useful info:
http://www.fixyourownprinter.com/forums/laser/42184

http://www.coldreset.com/modules.php?name=News&file=article&sid=200

Posted on May 12, 2008

redhaze89
  • 854 Answers

SOURCE: Brother HL-4040CN Fuser Cover

Click this link below;

http://www.uninetimaging.com/newsletter/Brother_HL_4040_TN_115_Reman_eng.pdf

Posted on Sep 08, 2009

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If the error is not cleared, the fuser unit is out of order. Replace it with a new fuser unit.

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Why I got the message "close cover - upper cover open" ?


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Your machine is in need of a new fuser unit. HP LaserJet 2400 Maintenance Kit Installation - Fuser (Part 1 of 2) Installing the fuser. Turn the power off and unplug the printer. Wait 20 minutes for the printer to cool.
Open the back door of the printer, using enough force that the door opens completely and the hinge locks disengage, as shown below.

2400_openbackdoor.jpg Remove the 2 screws circled in red below.

2400_removebackscrews.jpg Close the back door, and then flip the printer so that it rests on its face. 2400_closebackdoor.jpg 2400_flipprinter.jpg

Next swing open the paper guard which shields the back of Tray 2 when it is installed.

2400_openpaperguard.jpg

Looking inside the Tray 2 cavity, use a flatblade screwdriver to release the two tabs--one on each side of the rear cover.
2400_pryleft_backgate.jpg 2400_pryright_backgate.jpg

Next remove the rear cover from the printer by pulling down and away.

2400_remove_rearcover.jpg

Fuser Installation Continued . . .
Pry the grey DIMM cover loose and remove it.

2400_removedimmcover.jpg

Use a small flatblade screwdriver to disengage the tab on the connector shown below and unplug the connector.

2400_unplugleftconnector.jpg

Next (on the right hand side) remove the small black plastic cover, located near the green fuser gear, which hides the other fuser wires.
2400_removewirecover1.jpg 2400_removewirecover2.jpg

Then unplug the two connectors shown below and free the yellow/white wire from its guide clasp.

2400_unplugrightconnectors.jpg

Now remove the four screws holding the fuser in place (shown below).

2400_removefuserscrews.jpg

Now remove the black plastic piece shown below, the duplexer inlet guide. Gently pry the tabs on both ends loose and slide/rotate the guide back towards the fuser to release it.
2400_removeduplexguide2.jpg 2400_removeduplexguide3.jpg

Now you can remove the fuser, just pull it straight out towards you. Don't install the new fuser until you've replaced the main motor gear, as shown below.

Replacing Fuser Drive Gear

With the fuser removed, look into the printer and locate the main fuser drive gear on the left side of the fuser cavity (gear circled in red below).

2400_geartoberemoved.jpg

Use a flathead screwdriver to pry the gear's release tab and remove the gear by sliding it off its metal bar.

2400_gearreleasetab.jpg 2400_removegear.jpg

Slide the new gear onto the metal bar--make sure the gear's release tab faces outwards so it will be accessible again--and lock the gear firmly in place.

Now repeat the fuser removal process backwards as you install the New Fuser:

Insert the new fuser and replace the four fuser screws. Replace the black plastic duplexer inlet guide, making sure both tabs click in place. Re-plug the single connector on the left side, and the two connectors on the right side. Replace the wire cover on the right side. Reinstall the DIMM cover. Finally, replace the back cover with its screws.



This is a difficult installation which should be done by a technician. Good luck with it !

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1 Answer

I have a HP laserjet 4mv, i remove the fuser to replace it then i close the front cover of the printer now ready to put in the new one I realise I cant open the front cover cause the little lever that you...


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Hp 4350 error code 50.3


I have just changed the fuser unit and the printer is still giving the
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Maxwell Mpundu@technet.co.zm

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1 Answer

Fuser temp error


To test fuser out of circuit make sure lamp and thermal fuse are not open circuit, and thermister is neither open or shorted


Fuser repair procedure from tec manual.
Fuser Failure (U4-1, U4-2, & U4-3)
1
Switch off printer main power. Remove the Fuser Full Cover so you can observe the Heat Rods. Switch on printer main power and observe the ends of the Fuser Assembly. The Heat Rods glow.?
Y N
|
Go to step 5.
2 Replace the Printer Engine Controller PWB (REP 4.10.6). The error message reappears.
Y N
|
Problem solved.
3 Replace the Fuser Assembly The error message reappears.
Y N
|
Problem solved.
4 Check for a broken wire or a loose connection
between components
5 Measure the AC voltage between J23-2 and J23-6 on the AC Driver PWB. There is 110VAC (or 220VAC if the printer is the 220VAC model) between J23-2 and J23-6.
Y N
|
Go to step 7.
6 Replace the Fuser Assembly (REP 4.7.1). If the problem persists, replace the Printer Engine
Controller PWB (REP 4.10.6).
7 The Fuser cycles up and down.
Y N
|
Replace the Printer Engine Controller PWB
8 Measure the voltage between P401-1 and P 401-4 when the Fuser Fan cycles up and down. There is 24VDC between P401-1 and P401-4 when the fan is rotating and 0VDC when the fan is off.?
Y N
|
Replace the Printer Engine Controller PWB
9 Replace the AC Driver PWB

Please rate solution to your question "How can I check that new Fuser unit is ok?"




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1 Answer

Error message - won't function.


Usually it is the gears in the fuser asm. One of them is cracked or imbedded with toner and grease. Open the right cover and remove the two screws holding the fuser in place. First remove the back cover and unplug the fuser cables.

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