Sony Betacam SX DNV-5 Maintenance Manual page 63

6. Upper drum assembly installation
(1) Remove the upper drum remover from the
removed upper drum assembly.
(2) Loosen the screw of the upper drum remover
so that it does not protrude from the
installation surface.
(3) Install the upper drum remover in the upper
drum assembly with two screws.
(4) Align the positioning hole of the upper drum
assembly with the positioning pin of the
lower drum as shown in the figure and put the
upper drum assembly on the lower drum. At
that time, confirm that the positioning pin
protrudes from the upper surface of the upper
drum.
n
Hold the upper drum assembly keeping away
from the video head when the upper drum
assembly is installed. Take care that the video
head does not touch the brush support and
peripheral parts during installation.
Put the upper drum assembly on the lower
drum. Never push the perimeter of the upper
drum assembly manually.
(5) Push down the center screw of the remover
until the upper drum will go to the flange
surface of the lower drum.
While pushing, tighten the two screws
securing the upper drum with the torque
screwdriver that has been set to 28x10
(2.8 kgf.cm), and then loosen one by one
about 180 degree, finally tighten them with
same torque again.
n
Never push the perimeter of the upper drum
assembly manually.
DNV-5
DNW-7/90/90WS
Upper drum
remover
–2
N.m
Upper drum
fixed screw
3-2-1. Upper Drum Assembly Replacement
•
Upper drum remover
Screw
Do not project
from this surface.
Positioning hole
Upper drum assembly
Positioning pin
Upper drum
remover
Upper drum
fixed screw
3-13