Fwd Back Tension Adjustment - Sony Digital Betacam DVW-707 Maintenance Manual

4-3. Mechanical adjustments
2. Tension Regulator Operating Position
Check
Check that the position of the boss on the tension
regulator shown in the figure satisfies the follow-
ing specification.
Specification : The boss is positioned between
the outer circumference of the
boss touches the elongation line
of the edge portion of tape end
sensor bracket (black color) and
the center of the boss is on the
elongation line of the edge por-
tion of the tape end sensor brack-
et.
If the specification is not satisfied, check that the
position of the boss shifts to either direction A or B
against the elongation line of the edge portion of
tape end sensor bracket. After checking, perform
step 3.
Adjustment
3. Position Adjustment
(1) Loosen the screw of the band base about 1/3
turn.
(2) Put the (_) 3 mm screwdriver in the notch
shown in the figure and adjust the position of
the band base so that satisfies the specifica-
tion.
Point for adjustment
. If the tension regulator shifts to the direction A,
turn the screwdriver clockwise.
. If the tension regulator shifts to the direction B,
turn the screwdriver counterclockwise.
(3) While keeping the state of step the (2), tighten
the screw of the band base.
4. Mode Cancel
Press the EJECT button and put the unit is in the
unthreading end mode.

5. FWD Back Tension Adjustment

Carry out the FWD back tension adjustment.
(Refer to section 4-3-2.)
4-120
S4 tape guide
(_) 3 mm screwdriver
Screw
Notch
Band base
Tape end sensor bracket
Tape end sensor
S4 guide
NG OK (contact)
(a < 0) (a = 0)
Spec.
0 mm<a<1mm
Tepe end sensor
Tension regulator
Brake band
Band base
Boss
Tension regulator
B
A
a
a
OK OK
(a = 1 mm) (a > 1 mm)
DVW-790WS/709WS/707
DVW-790WSP/709WSP/707P P2V1