Chapter 9 - Inspection Criteria - HTC Sonata Service Manual

Chapter 9 – Inspection Criteria
9.1 Definition
The inspection criteria HTC defined is for service center repair ONLY. All service centers must follow
below inspection criteria to judge if customer returned unit is exactly "defective" caused by out of HTC's
specification.
9.2 Inspection Area
The inspection area of Smartphone is for
9.3 Criteria
Definition:
D: Diameter; L: Length; W: Width ;N: Number of defects ; S: Distance from dot to dot ;H: Height.
Viewing distance for LCM is, approximately:
Ambient illumination is to be 500~1000lux
Inspection viewing angle range: ±30degree Horizontal and ±45 degree Vertical:
(1) Defective Dot
Item
Defective dot ＞ 0.25mm
1
0.15＜ Defective dot ≦ 0.25mm
2
Defective dot ≦ 0.15mm
3
Total dot ≦6; Distance between dot and dot >5mm
(2) Defective Pixel
Item
1 Bright pixel only
2
Dark pixel only
3
Bright + Dark pixels (total)
4
2 bright pixels connected together
5
2 dark pixels connected together
6 Connected Bright + Dark pixels (total)
The distance between two bright pixels If the distance ≦ 6mm,
7
8 The distance between two dark pixels
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LCD module
30cm ±5cm
Status
Status
ONLY.
Criteria
If the Q'ty of defective dot ≦ 6,
Criteria
If the Q'ty of bright pixel ≦ 3,
If the Q'ty of dark pixel ≦ 4,
If total Q'ty of bright + dark pixel ≦ 4,
If the Q'ty of connected bright pixel ≦ 1,
If the Q'ty of connected dark pixel ≦ 2,
If the Q'ty of connected bright + dark pixels ≦ 2,
If the distance ≦ 6mm,
TOTAL 61
Fail
Pass
Neglect
Pass
Pass
Pass
Pass
Pass
Fail
Fail
CONT.ON. 48 PAGE NO. 47
Pass