Sanyo LCD-20XR1/AU, Service Manual

Page: 18 / 30

Q’ty allowed Distance between two spots
Category criteria
15" 20" 22" 30" 40" 15" 20" 22" 30" 40"
One single
spot
≤5 ≤2 ≤5 ≤2 ≤3
2 neighboring
spots
≤2 ≤1 ≤2 ≤1 ≤1
Bright
spo
t
Total No. ≤5 ≤2 ≤5 ≤2 ≤3
≥15mm
One single
spot
≤6 ≤7 ≤5 ≤4 ≤10
Two
neighboring
spots
≤2 ≤2 ≤2 ≤1 ≤5
Dark
spots
Total No. ≤6 ≤7 ≤5 ≤4 ≤10
≥15mm
≥10mm ≥5mm
Total defected point ≤8 ≤7 ≤5 ≤4 /
Notes:
1. Definition of defected point (bright spot, dark spot): It is identified as a defected point if its area
exceeds 1/2 of a single picture element (R,G,B).
2. Definition of bright spot: It is identified as a bright spot if it is bright in the state of dark field and its
bright size remains unchanged
3. Definition of dark spot: It is identified as a dark spot if it is dark in the state of white field and its
dark size remains unchanged
4. Definition of two neighboring points: Defects of a group of picture elements(RB,RG,GB).
16
IDENTIFICATION CRITERIA FOR THE BRIGHT SPOT AND DARK SPOT OF THE LCD SCREEN
LCD-20XR1AU.indd Sec1:16 LCD-20XR1AU.indd Sec1:16 2006/07/13 11:59:27 2006/07/13 11:59:27