Alignments and Adjustments (Mechanical)
Samsung Electronics
4-67
4-7-2 Linearity adjustment (S, T-guide rollers adjustment)
1. Play back the Mono Scope alignment tape (SP mode).
2. Observe the video envelope signal on an oscilloscope (triggered by the video switching pulse).
3. Make sure the video envelope waveform (at its minimum) meets the specification shown in Fig. 4-65.
If it does not, adjust as follows :
Note
:
a=Maximum output of the video RF envelope.
b=Minimum output of the video RF envelope at the entrance side.
c=Minimum output of the video RF envelope at the center point.
d=Maximum output of the video RF envelope at the exit side.
Fig. 4-65 Envelope Waveform Adjustment
a
a b c d
c,b,d/a 63%
b
c
d
4. If the section A in Fig. 4-66 does not meet the specification, adjust the S-guide roller up or down.
5. If the section B in Fig. 4-66 does not meet the specification, adjust T-guide roller up or down.
Fig. 4-66 Adjustment Points
A
B
A
B
ENVELOPE
H'D SWITCHING
PULSE
Summary of Contents for TB531VCT1X/XSA
Page 2: ...ELECTRONICS Samsung Electronics Co Ltd NOV 1998 Printed in Korea 3SCV11F 3115 ...
Page 8: ...MEMO 2 2 Samsung Electronics ...
Page 144: ...Wiring Diagram 11 2 Samsung Electronics 11 2 SCV11F Wiring Diagram ...
Page 146: ...Schematic Diagrams 12 2 Samsung Electronics 12 2 VCR SYSTEM BLOCK 4 3 1 5 2 6 ...
Page 148: ...Schematic Diagrams 12 4 Samsung Electronics 12 4 VCR POWER BLOCK ...
Page 149: ...Schematic Diagrams 12 5 Samsung Electronics 12 5 TV 1 4 RED POWER LINE BLUE SIGNAL LINE ...
Page 151: ...Schematic Diagrams 12 7 Samsung Electronics 12 7 TV 3 4 RED POWER LINE BLUE SIGNAL LINE ...