2-16
(2) Liquid crystal picture defect
Input the confirmation timing with signal generator. Visually check for the defects in each full mono color
pattern of white, black, red, green and blue. Carry out the measurement where there is little effect from outer
light (in a dark room, etc.).
Criterion: Must follow the details of “2.9 Liquid crystal display defect standards”.
2.9 Liquid crystal display defect standards
2.9.1 Condition of appearance inspection
2.9.1.1 Scope of inspection
(1) Visual check must be carried out for appearance inspection.
(2) The inspector (eye point) and the point to be inspected must be located as the picture shown below.
˘
45 : Appearance inspection when turning OFF the back light
˘
5 : Appearance inspection when turning ON the back light
2.9.1.2 Environment for inspection
(1) Surrounding temperature must be 25 .
Scope of inspection
(2) The outer light (except for the back light) must be approx. 500(lx) for the inspection with turning ON the back
light.
The outer light must be approx. 1000(lx) for the inspection with turning OFF the back light.
In addition, the outer light must be non-directivity.
(3) The back light must be operated for appearance inspection with turning ON the back light.
2.9.1.3 Picture pattern
Appearance inspection with turning ON the back light must be carried out with eight colored picture patterns
(grayscale 0 and 255).
2.9.2 Definition of applicable area
Liquid crystal display defect standards are only applied to the display part (pixel area).
Outer light
Scope of inspection
Approx. 300mm
STFT-LCD module
Summary of Contents for NEC MultiSync LCD1550X LCD1550X LCD1550X
Page 88: ...SCHEMATIC DIAGRAM POWER LCD1550X Normal Power Save 1ch Pin 4 2ch Pin 1 3ch Pin 2 4ch Pin 5...
Page 89: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X...
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Page 91: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X...
Page 92: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X...
Page 96: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X...
Page 97: ...SCHEMATIC DIAGRAM INVERTER LCD1550X 1ch Q701 B 2ch Q702 B...
Page 98: ...SCHEMATIC DIAGRAM PWB SW LCD1550X...
Page 100: ...SCHEMATIC DIAGRAM POWER LCD1550X...
Page 101: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X...
Page 102: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X...
Page 103: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X...
Page 104: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X...
Page 105: ...SCHEMATIC DIAGRAM PWB MAIN MC LCD1550X...
Page 106: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X...
Page 107: ...SCHEMATIC DIAGRAM INVERTER LCD1550X...
Page 108: ...SCHEMATIC DIAGRAM PWB SW LCD1550X...
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