Adjustments And Troubleshooting; White Balance Adjustment; Measurement Equipment; Measuring Procedure - Sony KDE-50XS955 Service Manual

2-1. WHITE BALANCE ADJUSTMENT

When the Panel or DE1 Board is replaced or is repaired, W/B
should be adjusted.

2-1-1. Measurement equipment

1. Color analyzer (CA-100 manufactured by MINOLTA)
2. Signal generator (ASTRO DESIGN VG-828D)

2-1-2. Measuring procedure

1. Dab the W/B adjustment jig (CA-100) at the glass face of the
panel.
2. Connect the Signal generator (VG-828D) to the component
terminal.
3. Input All-white signal (70%).
4. Make the settings as follows.
• Set the quality mode to PRO.
• Set the PICTURE to MAX.
• Set the Color corrector to Low.
5. Set the color temp, be adjusted cool.
6. Adjust the color temperature of the "highlight" side with the
following items of side mode menu, fixed a value of one of
RGBs 512.
There are 3 mode (COOL, NEUTRAL, WARM):
MODE COLOR TEMPERATURE
COOL 13550K + OMPCD
NEUTRAL 9300K + 8MPCD
WARM 8000K + 8MPCD
*Operation Register
Service mode "27 MAIN _WB"
5 : GAINR
6 : GAING
7 : GAINB
7. Adjust Cool, Neutral, Warm of each color temperature.
Adjustment target values:
MODE X
COOL 0.2684 ± 0.003
NEUTRAL 0.2849 ± 0.003
WARM 0.2951 ± 0.003
SECTION 2

ADJUSTMENTS and TROUBLESHOOTING

W/B
4
2
1
Y
0.2700 ± 0.003 13550K + 0MPCD
0.2931 ± 0.003 9300K + 0MPCD
0.3044 ± 0.003 8000K + 0MPCD

2-1-3. Service Mode

1. How to Enter Service Mode
1) Turn on the main power switch to place this set in standby
mode. (The LED will light red.)
2) Press the buttons on the commander as follows to enter
service mode.
5
(DISPLAY) (DIGIT 5) (VOLUME +)
2. Press the JUMP key on the commander three times.
3. How to Adjust
"27 MAIN_WB"
Category name.
(Can be changed with the 2 and 5 keys on the commander.)
5 GAINR 512
Data
Item Name
Item No.
4. After the adjustment is completed, save the data using the
MUTE and ENTER keys.
Enter the
"Service mode"
(POWER)
Can be changed with the 3 and
6 keys on the commander.
Can be changed with the 1 and
4 keys on the commander.
KDE-50XS955 (UC) 2-1