2-7
2.6.1.3 Aging
(1) Set to aging mode with OSM.
(2) Carry out heat running for 30 minutes or more in the no-signal state.
(3) Cancel aging mode with OSM.
<How to enter aging mode>
To enter aging mode, press (+) and (-) buttons simultaneously holding down RESET button when OSM is
displayed in NO SIGNAL state. Set OSM GAIN to MAX (255) using (+) and (-) buttons during heat running.
<How to disable aging mode>
To disable aging mode, press EXIT button when OSM is displayed.
Note that turning power ON and OFF can not disable the aging mode.
2.6.2 Main adjustment
2.6.2.1 Confirming OSM picture during heat running
(1) Confirm the ADC MAX value is 190 or less during heat running.
(2) Confirm that background of ADC MAX value indication is not red colored.
(The color of the background changes in the following order.
WHITE
Æ
YELLOW
Æ
MAGENTA
Æ
RED)
2.6.2.2 BIAS adjustment
(1) Input timing No. 14 (60kHz/75Hz, XGA75) with signal generator, then set the pattern to full black with frame
and video signal level to 0.7V.
(2) Select BIAS with OSM, and press (+) button. (Automatic adjustment of BIAS)
2.6.2.3 GAIN adjustment
(1) Input timing No. 14 (60kHz/75Hz, XGA75) with signal generator, then set pattern to full white and video
signal level to 0.7V.
(2) Select GAIN with OSM, and press (+) button. (Automatic adjustment of GAIN)
2.6.2.4 BRIGHT-LIMIT adjustment
(1) Input timing No. 14 (60kHz/75Hz, XGA75) with signal generator, then set pattern to full white and video
signal level to 0.7V.
(2) Select MAX in BRIGHT-LMIT with OSM, and set the value to 220.
Measure the luminance at the center of the picture with luminance meter, then confirm that it is within the
following value range.
190cd / m
2
– 300cd / m
2
(250cd / m
2
(typ.) for the specification of Liquid Crystal Panel)
(3) Select MIN in BRIGHT-LIMIT with OSM, and set the value to 30.
Measure the luminance at the center of the picture with luminance meter, then confirm that it is within the
following value range.
15cd / m
2
– 30% with BRIGHT MAX
2.6.2.5 Confirming color coordination of Liquid Crystal Panel
(1) Input timing No. 14 (60kHz / 75Hz, XGA75) with signal generator, then set pattern to full white and video
signal level to 0.7V.
(2) Set CONTRAST to CENTER (128) and BRIGHTNESS to MAX (220).
(3) Set color temperature (AccuColor) to N (NATIVE).
(4) Confirm that the color coordination is within the following value range at the center of the picture.
X = 0.305+/- 0.03
Y = 0.324 +/- 0.03
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...
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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...
Page 127: ...16 Document No VSPF A028 Bave Average brightness of 1 to 9 10 50 90 90 10 50 5 1 2 3 6 9 8 7 4...
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