10
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
Summary of Contents for AL1931
Page 27: ...26 3 3 BLOCK DIAGRAM ...
Page 34: ...33 5 TROUBLESHOOTING 5 1 Main Procedure ...
Page 35: ...34 5 1 1 Power Circuit Troubleshooting ...
Page 36: ...35 5 1 2 Backlights Troubleshooting ...
Page 37: ...36 5 1 3 Performance Troubleshooting ...
Page 38: ...37 5 1 4 Function Troubleshooting ...
Page 44: ...43 WAVESHAPE ...
Page 50: ...49 APPENDIX A PARTS LISTS ...
Page 51: ...50 A FRU Board A 1 454AA030001 PCBA Key Board VK 903 ...
Page 52: ...51 A 2 461AA030001 Firmware CTRL Board VL 903 ...
Page 53: ...52 A 3 455AA030001 PCBA D D INV Board Vp 903 ...
Page 54: ...53 Appendix B DISPLAY Assembly ...
Page 55: ...54 ...
Page 58: ...57 ...
Page 60: ...60 Appendix C PCBA Assembly ...
Page 61: ...61 ...
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