Nokia 445PRO, Service Manual, Page: 37 / 67

445N 35
8.3. Glass blemish
8.3.1. Scratch
Width Length of single scratch
W< 0.05 No limit
0.05<W<0.10 30
0.10<W<0.15 30
W> 0.15 None allowed
8.3.2. Bubbles/Foreign materials
Bubbles
Average diameter of defects Quantity allowed within any
circle 70
Minimum distance
0.3---0.45 2 12.7
Air blister
(Max. legth 6.0)
(Max. width 0.3)
2 12.7
Foreign material
Apply the face defect standard for blackish defects
Average of diameter
of defects
Quantity allowed within
any circle 70
Minimum distance
0.25---0.45 2 12.7
Note: No limit for the defects less than 0.25 mm average diameter