NEC LCD1550X-BK, Руководство по обслуживанию

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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