Purity Check Mode; Vcom Adjustment - Philips 32PFL3506/F7 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 the [7] button on the remote control unit
is pressed, 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 [PREV CH] 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 = 1.18 inches
1. 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 1.18
inches(3cm) away from the LCD-Panel surface.
Note: The optical receptor must be set
perpendicularly to the LCD Panel surface.
2. Enter the Service mode.
3. Press [2] button on the remote control unit.
4. Press [CH + or -] buttons on the remote control
unit so that the color analyzer value becomes
minimum within 2minutes from Power-On.
5. To cancel or to exit from the VCOM Adjustment,
press [PREV CH] button.
5-2
Adj. Point
[CH + or -]
buttons
Spec.
See below
Figure
Color Analyzer
A17F6EA