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. 

Fig 2: Checking Disc For Deformed Or Cracked

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NG: REPLACE MAP DISC 

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