Glass Blemish; Scratch; Bubbles/Foreign Materials - Nokia 445PRO Service Manual

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
0.3---0.45
Air blister
(Max. legth 6.0)
(Max. width 0.3)
Foreign material
Apply the face defect standard for blackish defects
Average of diameter
of defects
0.25---0.45
Note: No limit for the defects less than 0.25 mm average diameter
Quantity allowed within any
circle 70
2
2
Quantity allowed within
any circle 70
2
Minimum distance
12.7
12.7
Minimum distance
12.7
445N
35