Question about Dell 924 All-in-One InkJet Printer

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Pull par under glass off track, wont wull scanner

The scanner light bar thing wont pull cause the rubber pull thing (sorry for my lack of technical terms) got knocked off track. im not scared of taking it apart, however i can not figure out how to get underneath the scanner glass. ive taken every screw out, and nothing. can you offer any help on how to get inside this ******?
thank you

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There should be more screws hiding under the upper tray if you have one. Irregardless, there are more screws somewhere. The best rule to remember is this: Somehow it got put together, and don't force it apart unless you already bought another one and you just really want to know what's in there.

Posted on May 23, 2008

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Under the glass on a printer there is i presume the thing that scans it moves left to right visa versa by what i would call pulleys i think mine opened and fell apart i have all the parts


You have a good handle on the parts and their names. The light source and optics in the scanner do indeed move on rails, powered by a toothed belt and pulleys.

If you can get the glass off you will probably find a screw or a circlip (sprung half moon washer) has come off. It will be fiddly, but you can probably work out what goes where.

Jan 14, 2016 | Printers & Copiers

2 Answers

Scanner Error 5


Remove flat bed glass take out optical scanning assembly(detach flat cabl & belt).gently hold the unit & remove bannet of the unit care fully clean the reflecting glasses with ear buds gently. fix it back & clen flat bed glass both surface with glass cleaner fix every thing back,take care of finger prints not to print on glass, check if not resolved replace optical scanner assm.Note:technical skills & patiency required to do this process ..Best of luck

Oct 11, 2011 | HP LaserJet M1522nf Multifunction Printer...

1 Answer

Printed images are grainy? especially the skins. any solution


This could be caused by a couple of things. The first one is the toner cartridge. A defective or low toner cartridge can cause light "grainy" looking copies. If you have a spare toner cartridge try that first. The second possibility is dirty scanner optics. The scanner bar that lights up under the glass and moves back and forth has 3 mirrors on it. When they get dirty is causes your scanned image (before it gets copied) to appear light and patchy looking. The glass must be removed by removing the 4 screws on the left hand side. Then the scanner can be pulled out and the 3 mirrors cleaned. If you have the machine hooked up to a computer to be able to print then these mirrors will NOT affect PC prints. If PC prints are grainy then that would point to the toner. The dirty mirrors will only effect the copies.
Good Luck and Thank You for using Fixya.
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Oct 06, 2010 | Xerox WorkCentre XD100 All-In-One Laser...

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Sharp al 1000, the scanner is on and goes right and left all time


The simple fix is to clean the reference strip under the glass. There is a white strip under the left edge of the glass that the scanner reflects off of in order to set up the scanner bulb intensity. When this strip gets dirty the the machine just keeps trying. I would remove the cover on the left side glass area with the 4 screws. On the bottom side you will see the white strip. Clean this with glass cleaner. While your in there I would go ahead and remove the large glass. Turn off the main power and pull out the scanner bar and clean 3 mirrors. One is the "slot" in the main scanner bar and then the 2 in the assembly to the left that trails the main scanner bar. Once cleaned put it all back together and this scanner bar "referencing" issue wil go away. If it does not (which is rare) then there is a problem with the scanner/ccd unit and the machine is really not worth repairing at this point.
Good Luck and Thank You for using Fixya.
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Oct 05, 2010 | Printers & Copiers

1 Answer

Xc830 copying dark ,down center of page


There are a series of mirrors on the carriage that moves back and forth under the original glass. When dust builds up on these mirrors it makes the copies darker. Since the dust is blown by the optics cooling fan it does not collect evenly which causes areas of the copy to be darker than the others. On this machine you just have to remove the original guide plate which is the plate with 4 screws in it and has the document size numbers on it. Once that is removed the glass can be lifted out. With the power turned off just gently pull out the scanner bar. The part that initially comes out has 1 mirror as well as a silver reflecting strip on it. Clean both. Now the assembly that follows the first assembly out has 2 mirrors on it. 1 facing downward and 1 facing upward. Clean these 2 mirrors. Re-nstall the glass and plate. Turn the machine on and let the scanner unit home itself. Once warmed up make a copy to test. Cleaning these surfaces will usually correct the problem. There are 2 more mirrors under the black box under the glass but those do not get as dirty and they are harder to get to.
Good Luck and Thank You for using Fixya.

Sep 08, 2010 | Xerox 8830 Copier

1 Answer

Geting code L 1 unit will not do any thing


Scanner movement failure. The scanner is the part under the glass that lights up and moves back and forth. So if you lift up the feeder so you can see the glass, turn the machine off for a few seconds then back on. Watch the movement of the scanner. It should move right and inch or two then back to the left. If all goes well the copier should come to ready. Lay a piece of paper on the glass and press the print button to watch the scanner movement. If it binds up or does not scan correctly there are 2 possibilities.
1) your scanner lock is engaged and is preventing the scanner from moving. Check the clear plastic dial located under the far left upper side of the copier, near where the paper exits the machine. Make sure it is in the unlocked position.
2) Your scanner rail is dirty and dry. This rail can be seen under the glass towards the back of the copier. The scanner rides on this rail. It is very common for these to get dirty and for the grease to dry up causing the scanner to freeze up on the rail. The glass must be removed and the rail cleaned and lubricated.
Just power off then on the copier to reset.

Mar 20, 2010 | Sharp AL-1641CS Laser Digital Copier

2 Answers

Scanner error 5


Try this one open up the scanning lid, use a small allen wrench and pull the screw at the left side of the frame that holds a 1 inch wide by 12 inch long piece of glass. pot ur finger inside the housing and begin to roll the gear/rubber belt to move the scanner bulb assembly towards the left side as far as you can go. Then, turn the machine off and on.
If you are adept at printer repair, remove the right side cover, by removing the two screws in the hand hold area. pull the cover out at the bottom, using the handhold area, it will pop quite loudly. Once you get the cover off, you will find a large sheetmetal box with a row of connectors across the top of the circuit board. You do not need to remove the sheetmetal box to access the connector I am referring to. The four wire bundle I'm referring to has black, yellow, blue and red wires going to it. It's pretty much in the center of the row of connectors Be sure it is secure.
If the connector is securely inserted and no pinched wires are observed, the next most likely cause for this issue is a calibration stip for the scanner head inside of the scanner top. There are no spare parts for that level of repair. Opening the scanner top to repair it is likely to let in dust or debris and you won't find much that can be done if the calibration strip has moved or delaminated. The scanner top will need to be replaced. I believe the part number for the scanner top is Q3948-60191 unless it's been replaced with a newer part number.


that shud work if it doest contact hp....
good luck

Jul 12, 2009 | HP LaserJet 2820 Printer

17 Answers

Scanner error 5


It's a problem with the scanner unable to "see" its home sensor. The home sensor is a black & white film strip stuck onto the flatbed glass, just above where the scanner head homes. The printer needs to "see" the two little black 1mm square bumps in the white area. When the scanner head "homes", as it just disappears under the plastic it should move left and right as it looks at the home strip. If it keeps going and chatters at the right-stop it didn't see the home strip.

This can be caused by dirty mirrors, or lens in the scanner head (clean them);
Low or off color light (replace the bulb or high voltage power board on bottom of scanner head);
Broken, cracked, or loose scanner head ribbon cable (replace or repair);
Dirty or crooked home sensor film strip (I had one of these: the black & white film strip stuck to the flatbed glass was slightly crooked, it doesn't take much!)
Dirty slide bar (clean & oil);
Bad stepper motor, bad scanner PCBA (replace).


Nov 15, 2007 | HP LaserJet 2840 All-In-One Printer

6 Answers

Making funny clicking noise and hour glass showing that it is processing won't go away


As a follow-on to solution 2 (thanks for the post BTW), I found the problem is indeed the light bar, but rather than breaking into the printer to move and lube the light bar, I found success by simply shaking the printer with the left side down, to move the light bar along it's track to the left. (the shaking motion is sort of like getting ketchup out of a bottle).

This worked better for me than dismantling the printer with a special screw driver and seemingly needing to break the panel to get to the third screw. Hopefully this helps.

Oct 11, 2007 | HP PSC 2510 All-In-One InkJet Printer

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