Service manual

23
ViewSonic Corporation Confidential - Do Not Copy PJ513D-1
Table 1
Classification Area A Area B Area C
Lighting positioning Above of inspected part
Inspection position relative to part 90º 90º 90º
Inspection distance 40~50 cm 40~50 cm 40~50 cm
1.1.1.3 Inspection interval (time)
Inspection interval is a function of surface area.
Time for visual inspection: 10sec.
Table 2
Parts Size “A” surface “B” surface “C” surface
Time 10 sec 10 sec 10 sec
TABLE 3 General Product of plastic outlook of dot, blemish, and others spec inspection standard
A surface
(Number of defect)
B surface
(Number of defect)
C surface
(Number of defect)
Spec
( Area cm2 )
20*20 50*50 70*70 100*100 20*20 50*50 70*70 100*100 20*20 50*50 70*70 100*100
P < 0.2 mm2
Distance ≥ 2cm
Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore
0.2≦P< 0.3 mm2
Distance ≥ 4cm
2 3 4 5 2 3 4 5 4 4 5 6
Particle
Blemish
|
Color
spot
0.3≦P <0.4mm2
Distance ≥ 4cm
0 0 0 0 2 3 4 5 3 4 5 6
P<0.1 mm2
Distance ≥ 2cm
Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore Ignore
0.1≦P<0.2mm2
Distance ≥ 4cm
4 4 5 6 5 5 6 7 6 6 7 8
0.2≦P < 0.3mm2
Distance ≥ 4cm
3 4 4 5 4 5 5 6 6 7 7 8
Particle
|
Spot with
same
color
0.3≦P < 0.5mm2
Distance ≥ 5cm
2 2 3 4 3 3 4 5 4 4 5 6
Total 4 4 5 6 5 5 6 7 6 6 7 8
Note:
1. Use the 20*20 criteria to the area less than 20*20; 50*50 inspection criteria to the area 20*20≦A<50*50; etc.
(Particle/Blemish/Color Spot)
1.1 Definition of surface A, B, C refer to 6.2
1.2 Blemish around the ViewSonic Bird logo, name plate and silk screen must be equal or smaller than 0.05 mm
2
1.3 Bubble on the surface is to be reject.