Inspection Procedure

1. Check for dirt on the map disc surface.

   OK: No dirt is on the map disc surface. 

   HINT:

   If the disc is dirty, clean the disc by wiping the disc surface radially with a soft cloth.

   NOTE: Do not use a conventional record cleaner or anti-static preservative.
   Fig 1: Cleaning Disc

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NG : CLEAN MAP DISC 

OK : Go to next step 

1. Check that the map disc is not deformed or cracked.

   OK: No deformations or cracks appear on the map disc. 

NG : REPLACE MAP DISC 

Fig 2: Identifying Cracked And Deformed Disc

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OK : PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE