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3-5. Drum Assembly Replacement
Installation
2. Installation surfaces cleaning
Clean the installation surfaces of a new drum
assembly and chassis with cleaning cloth moist-
ened with cleaning fluid.
3. Drum assembly installation
(1) Hold the new drum assembly and connect the
three connectors (CN1, CN2 and CN3)
disconnected in step (3) of procedure 1.
m
. Be sure to hold the drum assembly portion
in which no video heads exist when
holding the new drum assembly.
. Take care that the drum assembly does not
contact the CTL head, AT head, and
peripheral tape guides.
. Do not apply excessive force to the brush.
(2) Connect the harness connector to the brush
board.
(3) Align the two positioning pins of the chassis
with the holes of the drum assembly, then
install.
(4) Confirm that the drum assembly is firmly
inserted into the positioning pins by moving
it slightly.
(5) Tighten the three screws.
[Tightening torque: 20 x 10
{2.0 kgf.cm}]
(6) Confirm that the brush surely touches the
grooves of the slip ring.
3-26
Drum assembly
PS2 x 5
_2
N.m
Cleaning
Cleaning
Harness
PS2 x 5
Positioning pins
Positioning pins
CN2
PS2 x 5
CN3
CN1
Video heads
BVW-55 P2
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