Adjustments; Mechanical Adjustments - Sony TC-755A Service Manual

TC-755A |
SECTION 2
ADJUSTMENTS
2:1. MECHANICAL ADJUSTMENTS
1. Brake Adjustment (1)
Perform this adjustment for both left and right
brakes. After the adjustment, apply locking com-
pound to the adjusted screw.
— Playback mode —
adjustment screw
Adjust. the brake adjusting plate for the
appropriate. brake stroke. :
— Right side ~
{In stop.mode there should be
more than 1 mm (3/64) gap.)
brake
brake adjusting plate brake band
brake solenoid
Too much. brake stroke..will
cause bend: in this portion.:
)
the gap between the brake drum and the brake lining
should uniformly. be more than 0.5mm (142").
In playback mode: (When.PM3 'solenoid is energized,).
In playback mode (When PM3 solenoid is
energized,) the brake band should uniformly
contact the brake 'band: guide.
— Left side —
brake band
guide
brake band
brake lining
adjustment screw
brake adjusting plate
brake arm brake solenoid
2. Brake Adjustment (2)
Perform this adjustment for both left and right
brakes. After the adjustment, apply locking com-
pound to the adjusted screw.
Specification:
Take-up Reel
clockwise
Brake Torque
1,800~2,500 g-cm
(25.0~34.8 oz-inch)
600~700 g.cm
(8.3~9.7 oz-inch)
Supply Reel
counterclockwise
counterclockwise | clockwise
— Stop mode — .
— Right side —
Change the hooking position of the sprin
for the specified brake torque. ii
brake lever
reel table
brake arm
brake stopper
adjustment screw
Adjust the brake stopper
for the specified clearance.
— Left side —
reel table brake lever brake stopper
brake arm