Toshiba W-704 Service Manual page 68

1-6-8. Tension Lever, Band Brake and Tension
Sleeve Replacement
1. Remove the S brake. (Refer to item 1-6-9.)
2. Remove the tension spring (1).
3. Lift up slightly the hole side of the tension sleeve (2)
mounted to the mechanical deck, and turn it to the
left or right direction, and then remove the tension
sleeve (2) by adjusting the claw of the tension sleeve
(2) to the cutout portion of the mechanical deck. Also
remove the tension lever (3).
Note:
• When replacing the tension lever (3) and the band
brake (4), removing the tension sleeve is not re-
quired. Remove it after turning clockwise by insert-
ing the screwdriver to the rectangle hole.
At this time, pay attention not to bent it up and down
directions.
4. Remove the band brake (4) of the tension lever (3)
side by adjusting the claw of the band brake (4) to
the groove of the tension lever (3) turning it in the
right direction.
5. Remove the band brake (4) by adjusting the claw of
the band brake (4) to the groove of the band brake
mounting portion at the mechanical deck side.
6. Replace each part with new one.
7. Mount it in the reverse order of removal.
Note:
• After replacing the tension lever (3), apply an
amount of oil to the support post.
• Take care not to dirty, bent, and damage the felt
surface of the band brake (4).
8. After mounting, confirm the tension post position,
also confirm the adjustment and back tension. (Refer
to the section 1-7-1. Tension Post Position Check,
and 1-7-2. (2) Reel Torque Check and Back Tension
Check.)
9. After replacing, perform the adjustment according to
the linearity adjustment of the tape transport system
adjustment item.
1-6-9. S, T Brake Assemblies and
Idle Lever Assembly Replacement
1. Remove the brake spring (1) located between the S, T
brake assemblies (2) and (3) from the T brake
assembly side.
2. Remove three claws (4) and (5) of S, T brake assem-
blies (2) and (3). Then remove the S, T brake assem-
blies (2) and (3).
If it is difficult to remove, push the claws from the
bottom side. Since two claws (5) are provided with
the T brake assembly (3), remove both claws.
3. Push the idle lever (6) to the cylinder direction (shown
by the arrow "A") and remove the idle lever (6).
Tension
Tension
spring (1)
lever (3)
Apply oil to
the shaded
portion .
Band brake
at mechanical deck
Tension sleeve (2)
Bottom side of mechanical deck
Fig. 1-6-25
Mechanical deck
Brake spring (1)
Claw (4)
S brake
assembly (2)
Band
brake (8)
Idle lever assembly (6)
Fig. 1-6-26
Band brake at
tension lever side
Rectangle
Band brake (4)
hole
Mechanical deck
Mechanical deck
Claw (5)
Compression
spring (7)
T brake assembly (3)
A