Electrical Adjustment Instructions - Philips 29PFL4508/F4 Service Manual

ELECTRICAL ADJUSTMENT INSTRUCTIONS

General Note: "CBA" is abbreviation for
"Circuit Board Assembly."
Note: Electrical adjustments are required after
replacing circuit components and certain
mechanical parts. It is important to perform
these adjustments only after all repairs and
replacements have been completed.
Also, do not attempt these adjustments unless
the proper equipment is available.
Test Equipment Required
1. Remote control unit
2. Color Analyzer,
CA-310 (KONICA MINOLTA Luminance meter) or
measuring instrument as good as CA-310.
How to set up the service mode:
Service mode:
1. Turn the power on.
2. Press [MENU], [1], [1], [4] and [7] buttons on the
remote control unit in this order to enter the
service mode. The Factory Setting menu appears
in the screen.
Example:
Factory Setting
ADC ADJUST
EMC SETTING
GENERAL SETTING
DEBUG
SW INFORMATION
INIT TV >>>
INIT FAC CHANNEL >>>
Burn Mode
Fac Reset >>>
MS6M18VG_91X
Checksum
The White Balance Adjustment should be
performed when replacing the LCD
Module or Digital Main CBA Unit.
White Balance Adjustment
Purpose: To mix red and blue beams correctly for
pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
1. Operate the unit for more than 60 minutes.
2. Input the White Raster (70%=70IRE,
40%=40IRE).
3. Enter the service mode.
4. Press [2] button on the remote control unit to
display the "GENERAL SETTING" menu.
5. Select "W/B ADJUST" and press [OK] button to
display the "W/B ADJUST" menu.
6. Select a color mode ("R-GAIN", "B-GAIN", "R-
OFFSET" or "B-OFFSET").
7. Set the color analyzer at the CHROMA mode and
zero point calibration. Bring the optical receptor
pointing at the center of the LCD-Panel.
To avoid interference from ambient
light, this adjustment should be
performed in a dark room.
L = 1 cm
INPUT: WHITE 70%, 40%
Note: The optical receptor must be set
perpendicularly to the LCD Panel surface.
8. In each color mode, press [s] or [B] button to
adjust the color temperature becomes 12000 K
(x= 0.272 / y= 0.278 ±0.008).
9. Select "COPY ALL" and press [OK] button.
10. To cancel or to exit from the White Balance
Adjustment, press [EXIT] button.
5-1
INPUT SIGNAL
Perpendicularity
Color Analyzer
PL13.21_EA