Service manual

6-2 LC7NEA

1. Purity Check Mode

This mode cycles through full-screen displays of red,

green, blue, and white to check for non-active pixels.

1. Enter the Service mode.

2. Each time pressing [7] button on the service

remote control unit, the display changes as

follows.

2. VCOM Adjustment

1. Operate the unit for more than 20 minutes.

2. Set the color analyzer and bring the optical

receptor to the center on the LCD-Panel surface

after zero point calibration as shown above.

Note: The optical receptor must be set

perpendicularly to the LCD Panel surface.

3. Enter the Service mode.

4. Press [3] button on the service remote control unit.

5. Press [CHANNEL UP/DOWN] buttons on the

service remote control unit so that the color

analyzer value becomes minimum.

[7] button

Note:

When entering this mode, the default setting is White mode.

Purity Check Mode

[7] button

Red mode

Green mode

Blue mode

Black mode

[7] button

White mode

[7] button

White 20% mode

[7] button

Test Point Adj. Point

Screen

[CHANNEL UP/DOWN ]

buttons

M. EQ. Spec.

Color analyzer See below

Figure

Color Analyzer

To avoid interference from ambinent

light, this adjustment should be

performed in a dark room.

L = 3 cm

Perpendicularity