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VL-SDPOU
8. TAPE RUNNING ADJUSTMENT
8-l.
Adjustment
locations
Adjust the height of only
replaced parts with the
_
adjusting jig.
Adjustment procedure 8-2
Running adjustm-
Running rough
Running final
ent preparation
adjustment
Cassette controller
adjustment
Adjustment
Adjustment
installation
Adjustment
procedure 8-3
procedure 8-4
procedure 8-5
<Replacement parts other
than those shown above>
_
8-2. Running height adjustment
.
After replacement
of T roller or Tu guide adjust the height
.
(Adjust only the replaced parts.)
After height adjustment
do not turn the T roller. If crease is found on the tape of Tu guide, remove the crease by rotating.
(As for details refer to the "running rough adjustment".)
.
After height adjustment
of T roller or Tu guide, apply Screw lock to an end of shaft.
(After replacement
of S guide apply Screw lock to same point, too.)
, T roller
Lower edge
fitting
Height
setting
jig
Master plane
Fit height the par on low edge fitting.
After setting adjustment
jigs, turn T roller
and S guide counterclockwise
to 225".
-
n
8-3. Preparation for tape running adjustment
Meters,
jig..
.
Oscilloscope,
Adjustment
remote
control,
Height
adjustment
screw
driver,
Alignment
tape (for tape
running
adjustment,
for switch point adjustment),
Master plane, Height adjustment
jig.
<Method and description>
(1)
Remove the cassette controller
assembly.
Sup guide roller
Tu guide roller
(2) Clean the tape running surface (especially,
adequately
clean
the drum surface and the lower drum helicam surface).
Tension roller
(3) Connect an oscilloscope
to each TP on the relay circuit board.
(4) Turn the AC adapter power ON.
\
\
Drym
1
Tu/guide
(5) Using the adjustment
remote control unit, put the system into
TEST mode T-05.
(6) Replay the alignment
tape for running adjustment,
and make
sure that the tape is running in the SP mode.
(7) Check the oscilloscope
playback
envelope,
then, at +1/4 shift
S
and -l/4 shift, check whether all of it is flat. If it is not, perform
the following adjustment
so that it becomes flat.
,
the shift will change;l+l/4
8-1
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