Alignment and Adjustments
4-10
Samsung Electronics
4-4 Other Adjustments
4-4-1 Screen Adjustment
1. Warm up the TV for at least 30 minutes.
2. Turn to the Video Mode (No Signal) using a
remote-control.
3. Connect an oscilloscope to RK,GK,BK.
4. Adjust the VR (VR501, VR531, VR561) screen
so that RK, GK, BK pulse is 20Vp-p each.
(Turn the R,G,B VR screen fully
counterclockwise in the area of each flyback
line.)
4-4-2 White Balance Adjustment
1. Select the “STANDARD” video mode.
2. Input 100% white pattern.
3. In the stand-by mode, press the remote-control
keys in the following sequence:
Mute
→
1
→
8
→
2
→
Power ON
4. Warm up the TV for at least 30 minutes.
5. Input a 10-step signal.
6. R-cut off, B-cut off, and G-cut off by pressing
the /- keys.
7. Adjust the low light with viewing the dark
side of the screen.
8. Select R-drive, G-drive, and B-drive by
pressing the /- keys.
9. Adjust the high light with viewing the light
side of the screen.
10. If necessary, redo adjustments 6~9.
11. Press the Menu key to exit.
4-4-3 Sub-Brightness Adjustment
1. Input a sub-brightness adjustment signal.
(TOSHIBA PATTERN)
2. In the stand-by mode, press the remote-control
keys in the following sequence :
Mute - 1 - 8 - 2 - Power ON
3. Select SBT by pressing the /- keys.
4. Adjust so that the 63 step on the right side of
the screen is not seen (Use the /-
keys).
5. Press the Menu key to exit.
4-4-4 High Voltage (29KV) Check
PRECAUTION
1. Input a lion head pattern.
2. Select “STANDARD” video mode.
3. Warm up the TV for at least 10 minutes.
4. Use a 1000:1 probe.
ADJUSTMENT
1. Connect the (+) terminal of the 1000:1 probe to
the high voltage distributor and the (-)
terminal to GND (located on the deflection
board).
2. Adjust RR471S (located on the deflection
board) so that the digital meter indicates
DC 29KV
±
0.1KV.
4-4-5 F.S. (Fail Safe) Adjustment
Note : The finished product has a well-mounted
VR (RR402S).
If necessary, do the F.S. adjustments in the
following sequence.
1. Use a digital multimeter.
2. Connect the digital multimeter to the JIG pin
(DZ482S) terminals
3. Adjust VR (RR402S) so that the voltage
becomes 2.25V.
4. After the adjustments are complete, be sure to
mount VR (RR402S) correctly.
Содержание PCL545RX/XAA
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