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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