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help  E-2501  Anti-dust shutter abnormal


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The shutter is on the  bottom of the laser unit.  To service it you need to remove the laser. Once out you can inspect the shutter and see if it opens and closes properly. Sometimes the foam seal starts to decompose and prevents the shutter from closing.  The solenoid can also wear out which prevents the shutter from opening.  In either case, be careful working on the unit, as it is fragile and pieces of debris can fall into the laser unit.  I like to work on the unit with it placed normally (shutter down) on a counter, with the shutter overhanging the edge.  A bit akward, but keeps dirt from getting in.

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