Mechanical Adjustment - Panasonic PV-M1327 Service Manual

MECHANICAL ADJUSTMENT

CLEANING PROCEDURE FOR THE UP-
PER CYLINDER UNIT
1. While slowly turning the Upper Cylinder Unit
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.
Upper
Cylinder
Head Cleaning
Stick (VFK27)
Fig. M1
Note:
1) Do not rub vertically or apply excess pressure to the
Video Heads.
Do not turn the Upper Cylinder Unit clockwise while
cleaning.
2) After cleaning, use a Dry Head Cleaning Stick (VFK27)
to remove any Ethanol remaining on the cylinder tape
path. Otherwise, tape damage will occur.
ADJUSTMENT PROCEDURES
TENSION POST ADJUSTMENT
Purpose:
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"
Counterclockwise
4. Using a (2 mm) Hex. Wrench, adjust the nut on the Tension
5. After adjustment, remove the Hex. Wrench.
Video Head
6. Press the STOP/EJECT button to place the unit in the
7. Release the unit from the Service Mode. Refer to "Service
2-19
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)
in the "Service Notes" section of this manual.
The power comes on and the unit goes into the PLAY
Mode.
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".
EJECT Mode.
Mode" in the "Service Notes" section of this manual.
Tension Post Hex. Wrench
FE Head
1mm
P1 Post
Fig. M2
Tension
Adjust Piece
hole center
A
Insert
(2mm) Hex. Wrench