Alignment and Adjustments
3-13
Samsung Electronics
(2) Linearity adjustment (Guide roller S, T adjustment)
1) Playback 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. 3-14.
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.
4) If the section A in Fig. 3-15 does not meet the specification, adjust the guide roller S up or down.
5) If the section B in Fig. 3-15 does not meet the specification, adjust the guide roller T up or down.
Fig. 3-14 Envelope Waveform Adjustment
a
a b c d
c,b,d/a 63%
b
c
d
Fig. 3-15 Adjustment Points
A
B
A
B
H'D SWITCHING PULSE
ENVELOPE
Summary of Contents for DVD-V5450
Page 23: ...Reference Information 14 12 Samsung Electronics Fig 14 14 Mecha Timing Chart Kaiser II ...
Page 37: ...Reference Information 14 26 Samsung Electronics MEMO ...
Page 49: ...Product Specification 2 12 Samsung Electronics MEMO ...
Page 109: ...Operating Instructions 12 60 Samsung Electronics MEMO ...
Page 237: ...Troubleshooting 5 34 Samsung Electronics MEMO ...
Page 247: ...Exploded View and Parts List 6 10 Samsung Electronics MEMO ...
Page 263: ...Block Diagram 8 2 MEMO Samsung Electronics ...
Page 265: ...PCB Diagrams 10 2 Samsung Electronics 10 1 VCR Main PCB COMPONENT SIDE ...
Page 266: ...PCB Diagrams 10 3 Samsung Electronics CONDUCTOR SIDE ...
Page 267: ...PCB Diagrams 10 4 Samsung Electronics 10 2 DVD Main PCB COMPONENT SIDE ...
Page 268: ...PCB Diagrams 10 5 Samsung Electronics CONDUCTOR SIDE ...
Page 270: ...9 1 9 Wiring Diagram Samsung Electronics ...
Page 271: ...Wiring Diagram 9 2 MEMO Samsung Electronics ...