Samsung TXH1370 Service Manual page 16

4-2-11 White Balance Adjustment
4-2-11 (A) LOW-LIGHT ADJUSTMENTS
1. Input either a lion head or "pure white" color
pattern.
2. Operate the receiver for 30 minutes.
3. Check the data in the service mode:
RC, GC, BC are 0 and SB is 16;
Steps BG are 90 and GG are 140.
4. Enter the horizontal line mode by pressing
the MUTE key.
5. Adjust the screen VR on the FBT until a dim
colored line (red,green or blue) appears on the
screen.
6. After pressing the MUTE key, go to RC,BC or
GC with channel
dim colored line (red, green or blue) in the
horizontal line with MUTE key, adjust color
with volume ,
7. Exit the horizontal line via the MUTE key.
4-2-11 (B) HIGH-LIGHT ADJUSTMENTS
1. Input a high-light pattern
2. Adjust GG,BG in the Service Mode.
3. Recheck in low light.
4-2-12 Sub-Brightness Adjustment
1. Input a Toshiba pattern.
2. Warm up the receiver for 10 minutes.
3. Enter the Service Mode and set SB to the point
where the 5th point is brighter in the gray
scale.
Samsung Electronics
, keys. After putting a
keys.
W
5 2
4 3
4-2-13 Vertical Size Adjustment
1. Input a lion head pattern.
2. After the vertical center adjustment, enter into
the service mode.
3. Adjust VA so that the each top and bottom of
the screen is 4.0. If the top and bottom values
are different, adjust VA so that the sum of the
two values is 8.0.
4-2-14 Horizontal Size Adjustment
1. Receive a lion head pattern.
2. Enter into the service mode.
3. Adjust HS to symmetrized right and left.
4-2-15 When CRT Is Replaced
Do the following adjustments after the basic
purity and convergence adjustments.
1. White Balance
2. Sub-brightness
3. Vertical Size
4. Horizontal Size
5. Fail safe (should be the final step).
1
Alignment and Adjustments
4-5