Sony DVW-709WS/709WSP, DVW-790WS/790WSP manual Adjustment Belt Tension Adjustment

4-3. Mechanical Adjustments

4-3-4. Belt Tension Adjustment

Note

When replacing the swing gear assembly, capstan motor or timing belt, be sure to carry out belt tension adjustment.

Preparations

1.Check that the unit is in the unthreading end mode.

2.Remove the front lid and the outside panel. (Refer to section 1-6 of Maintenance Manual Part 1.)

Tools
. Torque screwdriver bit (for M1.4)	:	J-6325-110-A
. Torque screwdriver (for 3 kg)	:	J-6325-400-A

Adjustment

1. Belt Tension Adjustment

(1)Check that the spring and its hook shown in the figure of the swing gear assembly are not deformed.

n

The belt tension automatically is adjusted by this tension spring.

Before this adjustment, check that the spring and its hook are not deformed.

If the spring or its hook is deformed, replace it before this adjustment.

(2)Loosen the screw shown in the figure 1 or 2 turns.

(3)After pressing the swing gear arm in the direc- tion of the arrow by finger, release it.

The swing gear arm will automatically return to the correct position by the power of the spring.

(4)Tighten the screw loosened in the step (2). n

When tightening the screw, never hold the swing gear assembly block by finger.

Screw	Swing gear arm
Tension spring

DVW-790WS/709WS/707 4-125

DVW-790WSP/709WSP/707P P2V1