Hitachi CML176SXW, Service Manual

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Notes 5) Definition of Luminance of White : measure the luminance of white at center point.
Notes 6)Definition of 9 points brightness uniformity (Measuring points: Refer to the Note 5)
Bmin
B
UNI
=100
∗ 
Bmax
Bmax: Maximum brightness
Bmin: Minimum brightness
Notes 7) Definition of Flicker level
Flicker Voltage
pp
F =

x 100 %
LMD Voltage
dc
♦
One maximum value of three estimated values.
♦
For this test ,an LMD(Light Measurement Device)is needed with adequate response time
to track any visible rate flicker component and with a voltage level output proportional
To luminance intensity.
♦
Test Pattern: For dot inversion Driving(Gray levels of foreground dots on the test panel
Are G22,G32,and G45)
♦
Test Point :Center point of the display area
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