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PV-9661 / PV-9662
6.2.
MECHANICAL ADJUSTMENT
6.2.1.
CLEANING PROCEDURE FOR THE
UPPER CYLINDER UNIT
1. While
slowly
turning
counterclockwise by hand, gently rub the Video Heads with
a Head Cleaning Stick (VFK27) moistened with Ethanol.
When using a Cleaning Cassette, make sure to use "DRY"
type only and be aware that excessive use can shorten
head life.
Note:
a. Do not rub vertically or apply excess pressure to the
Video Heads.
Do not turn the Upper Cylinder Unit clockwise while
cleaning.
b. After cleaning, use a Dry Head Cleaning Stick
(VFK27) to remove any Ethanol remaining on the
cylinder tape path. Otherwise, tape damage will
occur.
the
Upper
Cylinder
Fig. M1
6.2.2.
ADJUSTMENT PROCEDURES
6.2.2.1.
TENSION POST ADJUSTMENT
Purpose:
Unit
Symptom of
Misadjustment:
Equipment
Required:
1. Remove the Cassette Up Ass'y.
2. Plug the AC plug into an AC outlet.
3. Place the unit in the Service Mode. Refer to "SERVICE
MODE" in the "Service Notes" section of this manual.
The power comes on and the unit goes into the PLAY
Mode.
4. Using a (2 mm) Hex. Wrench, adjust the nut on the Tension
Adjust Piece (counterclockwise only) so that there is a
space of 1 mm between the left edge of the P1 Post and the
right edge of the Tension Post. Make sure that the center of
the Hex. Wrench hole is within Area "A".
5. After adjustment, remove the Hex. Wrench.
6. Press the STOP/EJECT button to place the unit in the
EJECT Mode.
7. Release the unit from the Service Mode. Refer to
"SERVICE MODE" in the "Service Notes" section of this
manual.
36
To maintain a constant tape tension so
that the tape runs with stability by
performing preliminary adjustment.
1) If the adjusted value is below the
specification, the tape tension is not
sufficient, thus causing a tape slack.
2) If the adjusted value is above the
specification, the tape tension is too high,
thus causing tape damage.
2 mm Hex. Wrench (Purchase Locally)
Fig. M2
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