Vcom Adjustment - FUNAI LED19-H800M Service Manual

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 remote
control unit, the display changes as follows.
Purity Check Mode
White mode
Black mode
Red mode
Green mode
Blue mode
White 20% mode
Note:
When entering this mode, the default setting is White mode.
3. To cancel or to exit from the Purity Check Mode,
press [BACK] button.
[7] button
[7] button
[7] button
[7] button
[7] button
[7] button

2. VCOM Adjustment

Test Point
Screen
M. EQ.
Color analyzer
To avoid interference from ambient
light, this adjustment should be
performed in a dark room.
Perpendicularity
L = 3 cm
1. Operate the unit for more than 20 minutes.
2. Set the color analyzer at the zero point calibration
and bring the optical receptor pointing at the
center of the LCD-Panel at a distance of 3cm away
from the LCD-Panel surface.
Note: The optical receptor must be set
perpendicularly to the LCD Panel surface.
3. Enter the Service mode.
4. To enter the "VCOM-2 adjustment mode", press [3]
button on the remote control unit.
To enter the "VCOM-1 adjustment mode", press [2]
button on the remote control unit.
5. Press [P /
unit so that the color analyzer value becomes
minimum.
6. To cancel or to exit from the VCOM Adjustment,
press [BACK] button.
5-2
Adj. Point
[P /
buttons
Spec.
See below
Figure
Color Analyzer
] buttons on the remote control
LC8.5P(LED)EA
]