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E 511: Service Required is commonly due to the Photo Conductor Unit's tabs getting stuck. So the first thing we need to do is to remove the PHoto Conductor Unit. Here are the step to remove the Photo Conductor Unit off of your EPSON Aculaser C1100.
1. Turn the printer on, and open cover B.
2. Raise the yellow lever inside cover B.
3. Remove the photoconductor unit.
4. Check the white tabs on the underside of the photoconductor unit. These are spring-loaded plastic tabs that should depress when you press and release it. If the white tabs no longer spring back you need to replace the photoconductor unit.
After removing or ultimately replacing the photoconductor unit, please follow the step by step giude on how to remove the photoconductor unit in reverse order.
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