VL-Z700S-T
VL-Z800S-S/E-S/E-T/Z900H-S
VL-Z950S-S/E-A/E-S/E-T/E-W
13
7. ADJUSTMENT OF RUNNING SYSTEM
7-1. Outline of adjustment of running system
7-2. Adjustment of height of running system
· After replacement of the T pole, Tu guide and slide chassis, adjust the height of the T pole/Tu guide using the height adjustment jig.
· If wrinkles are found in the tape, turn the Tu guide to remove them.
(For further details, refer to "Coarse adjustment of running system".)
· After adjusting the T pole and Tu guide height, apply screw loctite at the tip of the shaft.
7-3. Preparations for adjustment of running system
Measuring instrument and Jig : Oscilloscope, Adjustment remote control, Height adjustment screwdriver, Alignment tapes (for
adjustment of running system and adjustment of SW point), Master plane, Height adjustment jig
Preparations for
adjustment of
Running system
Adjusting
procedure(8-3)
(Replacement parts)
· Tu guide and arm
· Slide chassis
· T arm Ass'y
(Replacement parts other
than above)
· Pole base
· Guide roller
· Drum assembly
· Cap motor, etc.
Presetting of height not
necessary
Coarse adjustment
of Running system
Adjusting
procedure(8-4)
Final adjustment
of Running system
Adjusting
procedure(8-5)
Installation of
cassette controller
Readjustment of height
Height
adjustment jig
Master plane
Lower edge
alignment
Align the top face of the lower flange of the Tu guide with
the bottom edge of the height adjustment jig.
After adjusting the height, turn the head clockwise 180
degrees.
Tu guide
Master plane
View A
Height
adjustment jig
Apply it in this direction.
View A
<Method and description>
(1) Clean the surfaces that come in contact with the tape. (Clean
well the drum surface and the lower drum helical surface in
particular.)
(2) Install the cassette controller.
(3) Connect the oscilloscope to each TP of the joint circuit board.
(4) Turn ON the power of the AC adapter.
(5) Select TEST mode T-05 with the adjustment remote control.
(6) Play back the alignment tape for running system adjustment
and check that the tape is moving in the SP mode.
(7) While observing the PB envelope on the oscilloscope, adjust
the running system so that the envelope becomes flat in
states of [+1/4 shift] and [-1/4 shift].
(Each time the PB key is pressed, the shift amount changes
as shown below.)
Reel
Tu guide
Tu guide roller
Drum
Sup guide roller
S guide
Pinch roller
Tension pole
Capstan shaft
+1/4 shift
-
Normal
-
-1/4 shift
-
Normal
Master plane
T pole
View B
View B
Height
adjustment jig
T pole Height setting
Tu guide height setting
Lower edge
alignment
