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The pickup rollers automatically drop onto the paper stack when you push the tray in. There is a spring that operates this. If the pickup rollers are dropping down, you can see this from the back if you look at the gap between the tray and body of the printer then your problem is likely that the bevel drive gear that runs the feed rollers has sheared off. This happens quite often. To check this, pull the printer so that the front edge of the printer is just off the edge of a table. Feel under the front left side (facing the printer) and you will feel a small notched shaft, which drives additional trays. If it does not turn when you try to print a test page, then the bevel gear is broken for sure. Visually confirm by opening the left side of the printer, near the front you will see a little mylar square held on by a single screw. Remove this screw and the mylar square and look closely at the white gear behind it. You will likley see some broken teeth. This is a common failure item on these printers and easily obtained and replaced.
Possible that the cartridge was not fixed or is fitted correctly to fall into the alignement. So remove and reset the cartidge. It is also possible that there is a fault in the transport of the paper in the rollers. So if you have used any adhesive sticker printing, it is possible that some glue has got clogged into the rollers. If not there can be some jammed paper in the rollers or the mechanism. So start this work only if you are mechanically able with the right tools. Remove the covers to get access to the mechanism . Remove the motor drive assembly , the fitting of the motor to the mechanism. Once this is removed the rollers can be turned manually so that you will be able to feed a paper to see the progress of the movement while studying if there is any obstruction or damage to the paper. There is a in-detect sensor, usually an opto-coupler , make sure this is not clogged or dirty as this IR detection feeds the signal to the processor for starting the motor drive feed. Reassemble but make sure the rollers are aligned to be in equal gap to feed the paper without a side pull. Now you must print and see if the fault has changed. If not repeat the above workto confirm the area of obstruction
Prior to the issue you facing basically ,you check whether u can reattach the arm or you can try to compare with another drawer to figure it out .See anything that broken or crack pieces.Kindly post pic to me ,I'll might help u.Thanks ,pls rate me!!!!
1. The tractor encoder signal is faulty.
a. Clean any toner or paper dust out of the encoder sensor.
b. Inspect the tractor encoder wheel for damage. Replace it if necessary.
c. The encoder sensor is faulty. Replace the tractor encoder board or the entire tractor
d. The fuser drive clutch is slipping; replace it.
e. Replace the Engine Controller Board.
f. Replace the encoder cable.
Tractor Encoder. The Tractor Encoder Board has two optical sensors that sense the
1/8 inch and 1/16 inch slots in the Encoder Wheels. These pulses are sent to the Engine
Controller Board and are used to monitor and control print location and paper movement.
Remove the Tractor Encoder Cover by removing 1 Screw.
NOTE: Upon installation, the groove on the bottom of the Encoder Cover should
straddle the top of the left end of the Tractor Frame.
Left side of printer, just left of the tractor assy.
Most likely problem is that the feed roller has gone out of synch with the other parts. Wha6t you need to do is dismantle the machine and just realign the feed roller in the ASF. It sounds daunting, but it's really quite easy.
I suggest you get a service manual (http://www.TheServiceManualSHop.com) and take the machine apart to allow access to the ASF.
Remove the ASF from the machine and simply turn the drive gears so the ASF goes through a full "paper feed" cycle. Once done the rubber feed wheel will come to rest with it's flat spot facing the cork pad and you can put it back together.
Whilst it's in pieces, check the paper sensor is still in tact. If it's broken you can glue it back together with superglue. If the broken part is lost you can make another one from another pice of plastic and glue it in place.
Once assembled, it should work fine.