NEC NEC MultiSync LCD1525V LCD1525V LCD1525V, Руководство по обслуживанию

Страница: 51 / 109

4-3
2.2.2 Contrast adjustment
1) Use the VG-819 and enter Signal 20, in order to obtain a 16 gray pattern display.
2) Open the service menu. (See 2.2.1 herein.)
3) Using the
3
and
4
keys, select Tag 2 of the service menu and provide a display of the [AUTO OFFSET,
AUTO CONT MAX] screen.
＋
1
AUTO OFFSET
R OFFSET 128
G OFFSET 128
B OFFSET 128
AUTO CONT MAX
R CONT MAX 255
Ｂ Ｂ Ｂ Ｂ ＣＯＮＴ ＣＯＮＴ ＣＯＮＴ ＣＯＮＴ ＭＡＸ ＭＡＸ ＭＡＸ ＭＡＸ
2 3 4 5 6
G CONT MAX 255
B CONT MAX 255
AUTO OFFSET, AUTO CONT MAX screen
4) Using the
5
and
6
keys, adjust the HIGHLIGHT to [AUTO OFFSET] and press the PROCEED key.
Confirm that the values at the right of [R OFFSET], [G OFFSET], and [B OFFSET] change in the meantime.
Then, using the
5
and
6
keys, adjust the HIGHLIGHT to [AUTO CONT MAX] and press the PROCEED
key. Confirm that the values at the right of [R CONT MAX], [G CONT MAX], and [B CONT MAX] change in
the meantime.
5) Using the
3
and
4
keys, select Tag 1 of the service menu and provide a display of the [FACTORY
PRESET] screen.
＋
2
HOURS RUNNING
ON 0 H9 M
OFF 11 H19 M
B135: REV.BC
CPU: TS87C51 RC2-MCB
Ｂ Ｂ Ｂ Ｂ ＣＯＮＴ ＣＯＮＴ ＣＯＮＴ ＣＯＮＴ ＭＡＸ ＭＡＸ ＭＡＸ ＭＡＸ
1 3 4 5 6
CPU CODE:
CPU VER:DC150VM107B
FACTORY PRESET
FACTORY PRESET screen
6) Use the VG-819 and enter Signal 20, in order to obtain an all-white display.
7) Using the
5
and
6
keys, adjust the HIGHLIGHT to [FACTORY PRESET] and press the PROCEED key.
Confirm that the values at the right of [HOYRS RUNNING] to zero.
8) Press the EXIT key 4 times and close the service menu.