Samsung SyncMaster T23A750, Service Manual

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4-18
4. Troubleshooting
4-7-3 White Balance - Adjustment
3. W/B
(low light) (hight light)
Sub Bright
R offset
G offset
B offset Sub Contrast
R gain
G gain
B gain
(W/B adjustment Condition refer next page)
4-8. White Ratio (Balance) Adjustment
* All White Balance default value for TA750/TA950 is set in a factory line already. No need calibration and do White
balance again.
You can adjust the white ratio in factory mode (1:Calibration, 3:White-Balance). 1.
Since the adjustment value and the data value vary depending on the input source, you have to 2.
adjust these in AV, Component and HDMI modes.
The optimal values for each mode are configured by default. (Refer to Table 1, 2) 3.
It varies with Panel’s size and Specification.
- Equipment : CA210
- Pattern: MIK K-7256 #92 “Flat W/B Pattern” as standard
- Use other equipment only after comparing the result with
that of the Master equipment.
- Set Aging time : 60min
- Calibration and Manual setting for WB adjustment.
HDMI : Calibration at #24 Chessboard Pattern Manual adjustment #92 pattern (720p)
COMP: Calibration at #24 Chessboard Pattern Manual adjustment at #92 pattern (720p)
AV: Calibration at #24 Chessboard Pattern Manual adjustment at #92 pattern (NTSC)
- If finishing in HDMI mode, adjustment coordinate is almost same in AV/COMP mode.
- White Balance Manual Adjustment
P-Mode
Adjustment Coordinate
x y Y(Luminance) T(K) + MPCD
AV
(NTSC)
H/L 281 288
26” - Sub_CT:165 Fix
32” - Sub_CT:150 Fix
10,000(+0)
L/L 281 288 Sub_Br:128 Fix 10,000(+0)
COMP
(720P)
H/L 281 288
26” - Sub_CT:165 Fix
32” - Sub_CT:150 Fix
10,000(+0)
L/L 281 288 Sub_Br:128 Fix 10,000(+0)
HDMI
(720P)
H/L 281 288
26” - Sub_CT:165 Fix
32” - Sub_CT:150 Fix
10,000(+0)
L/L 281 288 Sub_Br:128 Fix 10,000(+0)
- Adjustment Specification
White Balance : High light (
±
2), Low light (
±
3)
Luminance : High light (Don’t care), Low light (
±
0.2 Ft/L)