Sony EVO-720P - LP Slow Adjustment (SE-7 P Board); Slow Fh Adjustment (SE-7 P Board)

8-2-13, LP Slow Adjustment (SE-7P Board)
Note: Perform SP slow adjustment first.
Mode Forward 1/5 slow playbac!
i‘ Self-recorded tape in LP
Signal
mode,
Measurement Point | Confirm on the monitor TV!
Measuring Instrument | screen,
RV207 (LP SLOW)
No noise on the monitor
screen,
Adjusting Element
Specified Value
Connection :
1) Connect TPOO] (Pin ® of IC001) to TPO02 (GND)
with a jumper.
Adjusting method :
1) Press the SLOW button (S013 on MB-9P board),
to set to the forward direction 1/5 slow playback
mode,
2) Turn RV207 clockwise (Q) so that noise appears
on the lower part of the monitor screen.
3) Turn RV207' counterclockwise (©) slowly, and slop
when noise has disappeared from the lower part
of the monitor ‘screen.
8-2-13. SLOW fH Adjustment (SE-7P Board)
1, fH bias adjustment
LP mode adjusting clements are shown in { J.
Mode Forward frame advance
Self-recorded tape in SP
(LP] mode,
TP104 on HK-3 board
({C.SYNC : Pin @ of 1C101)
Measuring Instrument | Oscilloscope
Adjusting Element RV216 [RV215]
Minimum {1 pulse
fluctuation
Signal
Measurement Point
Specified Value
Adjusting method :
1) Turn the editing controller JOG dial to perform
frame advance in the forward direction.
2) Adjust fluctuation of the frame advance fi pulse
to minimum with RV216 [RV215].
hota
z= | ieee)
Trigger point SN
Enlargement >| P=
Fluctuation
Fig. 8-10,
2, SLOW fx adjustment
[Mode ss Forward 1/5 slow playback!
Self-recorded tape in SP
mode,
TP104 on HK-3 board
(C.SYNC : Pin @ of 1C101)
Measuring Instrument { Oscilloscope
Adjusting Element RV212
Minimum fx pulse
fluctuation
Adjusting method :
1) Press the SLOW button (S013 on MB-9P board),
to set to the forward direction 1/5 slow playback
mode,
Measurement Point
Specified Value
2) Adjust RV212 so as to minimize fH1 pulse fluctuation.
Trigger point =r
Enlargement | be
Fluctuation
Fig. 8-11.
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