Sharp al 1000 shows E and 7 and hangs off

See This:
http://olsonbros.com/sharp/support/pdf_trbl/trbl-al1000_1010.pdf

E7 is CCD drive circuit trouble. Refer to the manual
obtainable from mauritron

Could be either one. Probably toner.

Folow link for Xp
Download

The scanner is not reading the white reference strip under the glass properly. You will need to clean or have cleaned the scanner optics and at least the white strip under the original glass. This strip is located under the left edge of the glass...under the scale that has the original sizing on it. The machine uses this strip on start up to reference the scanner. Simple fix.

Sounds like the scanner is locked. Look under the scanner where the paper comes out, there is a clear wheel, turn it all the way one way or the other and that will unlock the scanner.

Press c> photo>C>photo press 14 press start/Print key
machine ok

The codes are C Auto C Auto display off, press 24 print 7 print , 00 will display then press C twice.

The scanner rails will dry out. Try a drop of oil on the rod the scanner travels on. There are two bushings that slide along the rod/rail. Good luck.

That has to do with the laser unit and/or the white shading plate.

First remove the platen glass and clean the white strip on the bottom side. BE CAREFUL FOR THE GRAY OR BLACK LINE ON THE STRIPE IF YOU WIPE IT WITH A SOLVENT AND REMOVE THE LINE YOU ARE DONE.
If the unit is making a whining noise it is probably the laser unit polygon motor.
If the scanner mirror system is hanging or not returning to home position check to see that the scanner lock on the underside of the scanner where the paper comes out is unlocked.