White Balance Adjustment; Initialization; Ad Calibration; 1Pc Signal - Sony SS-SP50FW Service Manual

2-2. White Balance Adjustment

2-2-1. Initialization

Initialize all information stored in EEPROM.
1. Press the [ENTER] button of the remote controller
(RM-980).
2. Enter the number 1 → 8 → 2 in order.
The service mode starts up.
3. Select INITIALIZATION menu and run FILL 0xFF.
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When the setting is completed, the unit becomes ON
state automatically after power ON/OFF.

2-2-2. AD Calibration

Run Auto Calibration in PC (1360 x 768@60Hz) signal.

2-2-3. 1PC Signal

1. Start the service mode. (Refer to Section 2-1-1.)
2. Select AD CALIBRATION menu.
3. Input Full Black (No Video) pattern.
4. Run PC. CUTOFF.
5. Input Full White Pattern.
6. Run PC.GAIN.

2-2-4. White Balance

After aging the set about 30 min., adjust color matrix of
each color temperature 11000K/9300K/6500K.
Preparation for adjustment
Required equipment
. Signal generator (ex: VG-828)
. Color analyzer (ex: CA1000)
Signals
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If want to know detail timing. Refer to Sony Timing Spec.
. PC WXGA (1360 x 768@60 Hz)
. 1080I (Y/Pb/Pr)
. 480P (Y/Pb/Pr)
. NTSC composite
. PAL composite
. 480I (NTSC component)
. 575I (PAL component)
FWD-50PX2
Signal level
700 mV p-p
Signal pattern
. 191-level (75IRE) full white pattern
. 2/16 gray (16'st step at 255 level)
Color matrix adjustment
Run the following program sequence in order PC → 1080i
→ 480p → 480i → 575i → NTSC Composite → PAL
Composite.
1. After input each signal, adjust Sub Offset.
. Input 16-Gray Pattern.
. Activate SERVICE MODE OSD and select WHITE
BALANCE menu.
. Change SUB-OFFSET and adjust Brightness of 2/16
gray level into under 0.8cd/m
(SUB-OFFSET: ± 10)
2. Input Full White Pattern.
3. Setup R-GAIN and R/G/B-OFFSET values of the
WHITE BALANCE menu into the following TABLE
value.
PC 1080i 480p
R Gain 33 34 34
G Gain 32 33 33
B Gain 31 32 32
R Offset 61 61 61
G Offset 60 60 60
B Offset 63 63 63
4. Change G-GAIN and B-GAIN values and adjust color
matrix. (Refer to Sony Color Matrix Spec.)
11000K: x = 276 (± 15), y = 282 (± 15)
9300K: x = 283 (± 15), y = 298 (± 15)
6500K: x = 313 (± 15), y = 329 (± 15)
5. Adjust each color temperature 11000K/9300K/6500K
in order repeating steps 3 and 4.
Shipment condition setting
Set up the shipment condition.
1. Start the on service mode.
(Refer to Section 2-1-1.)
2. After selecting FOR TEST menu, run INIT GOODS.
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When the setting is completed, the unit becomes ON
state automatically after power ON/OFF.
2 .
480i 575i NTSC PAL
34 34 34 34
33 33 33 33
32 32 32 32
61 61 61 61
60 60 60 60
63 63 63 63
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