6-8
(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. 6-9.
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. 6-12 does not meet the specification, adjust the guide roller S up or down.
5) If the section B in Fig. 6-12 does not meet the specification, adjust the guide roller T up or down.
a
a b c d
c,b,d/a 63%
b
c
d
Fig. 6-11 Envelope Waveform Adjustment
A
B
A
B
H'D SWITCHING PULSE
ENVELOPE
Fig. 6-12 Adjustment Points
Summary of Contents for SLV-D940P AZ
Page 67: ...3 Block Diagram 3 2 3 1 SLV D940P AZ D940P EA D940P ME ...
Page 68: ...MEMO 3 4E ...
Page 70: ...4 3 4 4 4 1 VCR Main COMPONENT SIDE ...
Page 71: ...4 6 4 5 CONDUCTOR SIDE ...
Page 72: ...4 7 4 8 4 2 DVD Main COMPONENT SIDE ...
Page 73: ...4 10 4 9 CONDUCTOR SIDE ...
Page 74: ...4 12E 4 11 4 4 FUNCTION 4 3 Dial ...
Page 76: ...5 4 5 3 5 1 S M P S ...
Page 77: ...5 6 5 5 5 2 Power Drive ...
Page 78: ...5 8 5 7 5 3 OSD VPS PDS ...
Page 79: ...5 10 5 9 5 4 A2 NICAM ...
Page 80: ...5 12 5 11 5 5 A V ...
Page 81: ...5 14 5 13 5 6 Hi Fi ...
Page 82: ...5 16 5 15 5 7 TM ...
Page 83: ...5 18 5 17 5 8 I O ...
Page 84: ...5 20 5 19 5 9 SYSCON ...
Page 85: ...5 22 5 21 5 10 Logic Function ...
Page 86: ...5 24 5 23 5 11 DVD A V ...
Page 87: ...5 26 5 25 5 12 DVD decoder Servo ...
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