Diagnosis

Diagnosis

Date : September 14-15, 2001
Location : San Cristobal, Galapagos
- The illumination by the light bulb was too weak due to possible misalignment of the bulb.
  The SnowWhite then must have misunderstood as if there were some frost on the mirror and tried to warm-up the frost.
- The above diagnosis was derived by the following evidences:
  - The FPT was reasonable when the sensor cover is opened under daytime condition,
  - The FPT increases when the cover is closed even during daytime,
  - It appears that the inside light bulb does not properly illuminate the mirror and that the light axis is deflected to the right-hand side of the mirror,
  - The FPT shows decrease when the entrance of the glass fiber optics is illuminated by pencil light,
  - The FPT was reasonable when the mirror is illuminated by pencil light,
  - The FPT was reasonable when the edge of the water bag was inserted to the side of the mirror to reflect some of the light in the mirror direction.