Question about Canon CanoScan LiDE 25 Flatbed Scanner

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Scanner does not scan. It seems to be jammed, stuck.

It seems to be jammed, stuck.
Making a clicking sound and scanning arm cannot move.
Thank you,
Richard Miller

Posted by on

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It's dead simple to clear the jam. If you already bought a new scanner, you can fix the Canoscan and sell it.

OK, first how did it get jammed in the first place? Probably because you moved the scanner without closing the lock on the bottom. The scanner arm then got jogged out of the home position.

There are two ways to go.

1) Reverse the impact that caused the jam. To check if this is feasible open the top of the scanner. If the arm is not tight against the front (where the 3 black buttons are located) then this might work. Get a cushion that is not too thick and place it on your desk. Holding the scanner in both hands stand it on end so the front edge is down and the back edge is up. Look at the back to make sure the lock is open, then tap the front edge of the scanner firmly against the cushion. Set it down and open the cover to see if the arm is now tight against the front. If not repeat two more times tapping a little harder.

If this seems to work, test if the scanner arm is in the home position. Turn to the back of the scanner and try to close the lock. If the scanner both looks like it is in the home position and you can lock the arm, then it is probably in the home position.

If this seems to work, unlock the arm of the scanner, connect to your computer and test it.

2) If this method does not work it's time for a little open scanner surgery. Open the lid of the scanner and observe the cable that runs from the front to the back. It is just a cord about 1/10 inch (3 mm) thick. Observe where it meets the back of the scanner.

Close the lid and stand the scanner on its front edge. You will see an oval patch slightly darker than the panel. Use a penknife to lift the edge and carefully peel this off and save it. You will observe a hole with a slot shaped like the letter Q, the slot being the tail of the Q. This slot keeps the cord in place. You must plug the hole befoe proceeding further to ensure that the cord does not slip out of the slot. (Mine did and it took me half an hour to figure out how to reassemble the moving parts.) Use a twig, tapered pencit stub or a wooden chopstick as a plug.

Now set the scanner on the desk, open the lid and locate the two oval plastic patches at the left and right front corners. These cannot be peeled off because they are part of the frame that secures the glass plate. You need to lift each oval patch with your penknife. First slip the penknife into the crack on the right side of the scanner just a little back of the oval patch and lift the patch. Gently wiggle the knife and slide it back to lift the whole right side of the frame. Be especially careful not to lift near the back end because there is a little lip that goes under the back side of the frame. Repeat with the left side, which is a little more difficolt to get loose. Do not try to lift off the front or back sides of the frame.

Now you are ready to remove the glass plate. Slide your penknife in the gap at the front of the plate and nudge it to the back. Gently pry up the front edge of the plate and lift it up about 4 inches (10 cm). You may be able to push the arm into the home position without completely removing the glass plate. If not, pull the glass plate forward and lift it off. You may need to wiggle it a little to get it loose. Gently push the arm to the home postion at the front edge.

To test if the scanner arm is in the home position, reach under the scanner and try to close the lock. If you can lock the arm, then it is in the home position.

Don not turn the scanner over to see the lock. This would cause the whole assembly to fall onto your desk.

Reassemble the scanner in reverse order. Unlock the arm of the scanner, connect to your computer and test it.

Send $5 to Oxfam or the charity of your choice.
















Posted on May 23, 2009

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Thanks for your interest. The problem appears to be in the hardware - so I'll
be visiting the store where it was purchased, to either fix it or replace the scanner.
Regards,
Richard

Posted on Dec 08, 2008

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