E7-11 is a white level shading correction error. This code was intended to identify a dirty white level reference (located under the left edge of the copyboard glass).
This code has plagued certain individual Cougar machines. I have personally replaced CCD's, installed a foam damper to the top of the hard drive (to damp vibrations between the hard drive and the lens cover), and ICU boards, to no effect. Typically 3 to 7 times a day this code can pop up.
SOURCE: System error (f2-04) for Sharp Copier, model AR-M201
It is copy lamp error.
1- check the copy lamp on with sim.
2- replace the power unit.
3- replace the inverter.
4- replace the mcu pwb.
- Toner supply abnormality caused by
installation of unpacked toner cartridge
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