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17
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Model No.: VCR-S608
Version: 1.0
(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.
2-11.
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. 2-12 does not meet the specification, adjust the guide roller S up or
down.
5.
If the section B in Fig. 2-12 does not meet the specification, adjust the guide roller T up or
down.
6. Play back the Mono Scope alignment tape (SP mode).
7. Connect an oscilloscope CH-1 to the “Envelope” and CH-2 to the “H’D SW Pulse” for
triggering.
8. Turn the guide roller heads with a flat head (
) driver to obtain a flat video RF envelope as
shown in Fig. 2-13.
2-8
Fig. 2-11 Envelope Waveform Adjustment
a
a b c d
c,b,d/a 63%
b
c
d
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Summary of Contents for VCR-S608
Page 1: ...Video Cassette Recorder Service Manual All manuals and user guides at all guides com ...
Page 2: ... 2 Model No VCR S608 Version 1 0 MODEL VCR S608 All manuals and user guides at all guides com ...
Page 5: ... 5 Model No VCR S608 Version 1 0 All manuals and user guides at all guides com ...
Page 45: ... 45 Model No VCR S608 Version 1 0 All manuals and user guides at all guides com ...
Page 46: ... 46 Model No VCR S608 Version 1 0 S M P S All manuals and user guides at all guides com ...
Page 47: ... 47 Model No VCR S608 Version 1 0 POWER DRIVE All manuals and user guides at all guides com ...
Page 48: ... 48 Model No VCR S608 Version 1 0 TIMER All manuals and user guides at all guides com ...
Page 50: ... 50 Model No VCR S608 Version 1 0 AUDIO VIDEO All manuals and user guides at all guides com ...
Page 51: ... 51 Model No VCR S608 Version 1 0 HI FI OPTION All manuals and user guides at all guides com ...
Page 54: ... 54 Model No VCR S608 Version 1 0 A2 NICAM All manuals and user guides at all guides com ...
Page 55: ... 55 Model No VCR S608 Version 1 0 INPUT OUTPUT All manuals and user guides at all guides com ...
Page 56: ... 56 Model No VCR S608 Version 1 0 SUB All manuals and user guides at all guides com ...
Page 57: ...All manuals and user guides at all guides com ...
