I have a DS3578 Motorola Scanner, I use the 123Scan2 program to create some ADF rules, but I have a problem when I add some actions. If one is a function key F14

SOURCE: Scanner Imaging problem

Your scanner’s lock switch may be locking up the carriage unit. Depending on the model you own, your scanner’s lock switch resides in one of two locations. You can find it beneath the scanner itself or in a corner next to the scanner bed after you lift the lid. The switch should be marked with a locked and unlocked padlock symbol; slide the switch to the unlocked padlock to unlock the carriage unit.
It’s also possible that the supplied USB cable is improperly connected to your computer. Connect the cable directly to your PC. Canon’s online documentation indicates that scanners that connect via a USB hub may not work properly. Once you have unlocked your scanner and properly connected it directly to your computer, try to rescan the image.

SOURCE: ADF for MP530 does not work

Welp, I pulled out my screwdriver and fiddled around just a bit and got documents to feed again (yay!). I do not believe this is a permanent fix, though, but it was enough to get my document scanned in without me having to feed each sheet manually.

Step 1: Open the document feeder cover. Easy to do, you just stick your hand under it and lift up. It has a little pressure because of the latch but it is designed to give way when you lift hard enough. Once it's open, pull out the little black plastic piece that keeps the cover from swinging all the way open.


Step 2: Unscrew the ADF motor/gear assembly cover. There's a single screw holding it in. Once you unscrew it, you'll need to pull up on the left side of the cover until it pops upward, then you need to push the cover towards the left until it is freed up from the rest of the cover. This one was a little tricky. Several times I thought I might break it (before I realized that I needed to push the cover towards the left) so try not to apply unreasonable force while you're doing this.


Step 3: Close the document feeder cover, put your documents in the feeder and start your scan. Use your fingers to fiddle with the gears while the ADF motor is running and trying to feed documents. I'm not sure if I flicked the little gear upward or downward to get the documents to feed, but one of those ways got the documents to start feeding. Once it started feeding the first page, it seemed to work well for the rest of the pages without me having to fiddle with it anymore.


I am guessing that there is some level that controls the location of the middle gear that needs to be oiled, but I didn't go any further to try and make that happen. Hence this is probably just a temporary fix for now.

Putting it back together is pretty straightforward. Just do the reverse of what you did to get it open.

Hope this helps someone!

SOURCE: how to remove and replace adf lid and gears for

http://www.precisionroller.com/trays-for-hp-officejet-pro-l7590/details_54680.html for the tray $46

Circuit City has the whole printer for $150.