Microtek ScanMaker 6800 Flatbed Scanner "hp stepper" Questions

...stepper motors carrying out the scan. However, when the scan is reported to be complete no image is displayed in the scan window (or a null image). The same results have been seen with different ...

squeaking when it scans If its scanning well and is out of warranty ignore it. If its under warranty get it replace. Quite often its not a problem, or just the high resolution stepper motor Operating.

Light bar stops too soon When scanning, my light bar now only advances an inch or so before returning, so it only scans a small portion of the platen. Is this a lubrication issue? Can I fix it myself,