Special Key Operation - NEC LCD1501-BK Service Manual

3.2 Special key operation

<Factory mode>
1) Open the information tab [MODE] of the OSM menu.
2) Simultaneously press the three keys of < (left), > (right), and RESET.
3) When a message of WARNING appears, press the SELECT button to enter the factory mode.
4) Press the EXIT button to close the factory mode.
<Aging mode>
1) Make the setting not to receive input signals.
2) Simultaneously press the three keys of (+), (-), and RESET.
3) Using the < (left) and > (right) buttons, it becomes possible to changeover the screen color (white ⇔ red
⇔ green ⇔ blue).
4) Using the (+) and (-) buttons, it becomes possible to change the brightness of each color.
5) To close the aging mode, receive any signal to turn off the power supply.
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