NEC NEC MultiSync LCD1525V LCD1525V LCD1525V, Service Manual

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4-2
1. Preparations for Adjustment
1.1 Measuring equipment used
Pre-programmed signal generator VG-819 (Astro Design) or equivalent product
1.2 Power-supply voltage
AC 120 V
±
5%, 50/60Hz or AC 220 V
±
5%, 50/60Hz
1.3 Aging
Unnecessary
1.4 Input Signal
Input signal 20 (*1) from the video signal generator VG-819 with an inspection ROM device mounted.
*1 For more details about the signals, see Section 3, "VG-819 Setting Method."
2. Set Adjustment
2.1 Power supply turn-on
1) Insert the AC cable plug in a wall outlet, and press the POWON key. Confirm that the green and amber
LEDs flash reciprocally.
* If there is no reciprocal flashing of the green and amber LEDs even after the AC cable plug has been
inserted in a wall outlet or the POWON key has been pressed, such a product shall be regarded as a
defective one.
2) Enter Signal 20 and confirm that the LED is lit in green.
* If the LED is not lit in green at that time, such a product shall be regarded as a defective one.
3) Press the PROCEED key. Confirm that the OSD is displayed on the screen.
2.2 Adjustments
2.2.1 How to open the service menu
1) Use the
4
key and select the rightmost tag in the OSD menu.
2) Use the
6
key and move the HIGHLIGHT to [DISPLAY MODE....
→
]. Then press the PROCEED key to
obtain a sub-menu.
3) Pressing the RESET key, press the
5
and
6
keys simultaneously in order to obtain a display of the
[WARNING] screen.
4) Press the PROCEED key to obtain a display of the [SERVICE MENU] screen.
5) Confirm that the LED is lit in yellow.