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First, let's establish what part of the printer is what so that we can communicate clearly throughout the guide. The red square is the front and the orange square is the top. After those, we have left (yellow), and right (green). The back is opposite the front and the bottom is opposite the top.
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Open the front door and remove the toner cartridges.
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Set the cartridges aside for later. To keep them clean, place them in a bag or closed box.
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Place the printer so that the right side is on the ground.
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Remove the paper tray from the bottom of the printer.
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Remove the indicated Phillips M3 screw from the left side of the printer
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Release the tabs as indicated in the example by lifting or pressing them as needed.
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Rotate the device so it rests on its back.
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Unscrew and remove the two Phillips M3 screws as indicated from the right side covers.
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Release tabs on the right base cover and right cover.
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Some of these tabs are inside the printer, so you will need to open the door and look along the right side.
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Remove the right base cover and right cover from the printer.
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Place the device right side up once again.
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Remove the nine indicated Phillips M3 screws from the back plate.
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With the screws removed, lift the back cover from the bottom and remove from the printer.
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Remove the ribbon cable by pulling directly along the cable.
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Remove the white connector by pressing down on the tab and pulling out.
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Pull the purple wire connectors directly out. You do not need to mark which cable goes where, as they are all unique sizes.
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Remove the white connector by pressing down on the tab and pulling out.
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Remove the four ribbon cables gently from the right edge of the circuit board assembly.
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Remove the final two wires by pulling them straight out.
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Unwind the cables from the black harness on the top and right edges of the circuit board assembly.
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Depress the indicated tabs and remove the corner wiring harness from the circuit board assembly.
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Slide the top wiring harness to the left and remove it from the circuit board assembly.
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Remove the eleven indicated Phillips M3 screws from the circuit board assembly.
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Remove the circuit board assembly from the printer, being cautious of the wires and cables,
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Remove the two ribbon cables gently from the optical sub-assembly.
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Tilt the printer forward and remove the Phillips screw with a lock-washer from the bottom area of the printer.
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Set the printer back down and remove two more Phillips screws with integrated lock-washers, which releases the optical sub-assembly.
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Remove the optical sub-assembly, this is what you need to repair.
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Place the optical sub-assembly with the side that was facing you down.
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Remove the indicated black screw.
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Unhook and save the indicated spring.
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Remove the top plate from the optical sub-assembly.
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Using a clean cotton swab or lens brush, GENTLY clean the visible sides of every clear or reflective surface you can find.
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Finish with a light blast of compressed air on all of the surfaces you cleaned.
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33 comentarios
Takes 2-3 hours to disassemble and reassemble for a first timer but it worked really well!
And in the end all it cost me was my time.
Many thanks!
Thank you very much for sharing your knowledge with this guide.
Since I had the machine apart I took the time to clean every area I could get to that is within the paper path.
It took me 6 hrs. to complete the job; but it did not work.
The printer indicated an Error Code 51.21.
So I did the job over again.
I had been fooled by the two ribbons that connect to the optical sub-assembly that by design rub up against the right side of the box, even when disconnected.
My second servicing took me about three hours.
Thank you.
I have a normal working color printer again, and did not have to buy saved the cost of parts and labor by using your guide for restoration.
This really is, without doubt, the best set of do-it-yourself instructions I have seen in my 45+ years working in the IT industry.
I didn't see any dust in the area to be cleaned, so I am a little mystified as to what the cause was. I got the missing magenta colour working but despite running the process twice I could not get yellow to work properly. I only use it for printing letters and spreadsheets, so I can live without that.
Thanks again