Sony HDW-750 Maintenance Manual page 415

8-1-5. Timing Belt Tension Adjustment
Note
When the reel drive gear assembly or capstan motor of timing belt is replaced, be
sure to adjust the belt tension.
Preparations
1. Confirm that the unit is in the unthreading-end state.
2. Remove the front lid and the outside panel assembly. (Refer to Section 1-4.)
Tools
. Torque screwdriver bit (for M1.4) : J-6325-110-A
. Torque screwdriver (for 3 kg) :
Adjustment Procedure
1. Timing belt tension adjustment
n
Belt tension is automatically determined by
the tension coil spring for belt tension 1 in
the illustration.
(1) Disengage the tension coil spring from the
hook as shown 2 in the illustration.
(2) Loosen the adjustment screw of the reel drive
gear assembly by 1/2 turn to 1 turn.
(3) Push the pulley base assembly in the direc-
tion of the arrow. While holding the pulley
base assembly with hands so as not to be
raised from the position that is returned by
the spring force, tighten the adjustment
screw.
Standard tightening torque :
10 x 10 _2
N.m (1.0 kgf.cm)
HDW-750/750CE V1
J-6325-400-A
1
Tension coil spring
for belt tension
Tension coil spring
for belt tension
Adjustment screw
2 Tension coil spring
Pulley base
assembly
Pulley base
Tension coil spring
assembly
for S one-way
8-1. Mechanical Adjustment
Disengage the spring
for S one-way
Screwdriver
Adjustment
screw
8-11