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
Содержание SLV-D940P AZ
Страница 43: ...2 3 Fig 2 7 Circuit Board Locations 2 2 CIRCUIT BOARD LOCATIONS DVD MAIN PCB FUNCTION PCB VCR MAIN PCB ...
Страница 67: ...3 Block Diagram 3 2 3 1 SLV D940P AZ D940P EA D940P ME ...
Страница 68: ...MEMO 3 4E ...
Страница 70: ...4 3 4 4 4 1 VCR Main COMPONENT SIDE ...
Страница 71: ...4 6 4 5 CONDUCTOR SIDE ...
Страница 72: ...4 7 4 8 4 2 DVD Main COMPONENT SIDE ...
Страница 73: ...4 10 4 9 CONDUCTOR SIDE ...
Страница 74: ...4 12E 4 11 4 4 FUNCTION 4 3 Dial ...
Страница 76: ...5 4 5 3 5 1 S M P S ...
Страница 77: ...5 6 5 5 5 2 Power Drive ...
Страница 78: ...5 8 5 7 5 3 OSD VPS PDS ...
Страница 79: ...5 10 5 9 5 4 A2 NICAM ...
Страница 80: ...5 12 5 11 5 5 A V ...
Страница 81: ...5 14 5 13 5 6 Hi Fi ...
Страница 82: ...5 16 5 15 5 7 TM ...
Страница 83: ...5 18 5 17 5 8 I O ...
Страница 84: ...5 20 5 19 5 9 SYSCON ...
Страница 85: ...5 22 5 21 5 10 Logic Function ...
Страница 86: ...5 24 5 23 5 11 DVD A V ...
Страница 87: ...5 26 5 25 5 12 DVD decoder Servo ...
Страница 88: ...MEMO 5 28E ...
Страница 90: ...6 2 TEST TEST BUTTON 6 1 1 b TEST location for adjustment mode setting Fig 6 2 VCR Main PCB Top View ...
Страница 116: ...7 18E MEMO ...