Sony Betacam SX DNV-5 Maintenance Manual page 78

3-2-4. Drum Assembly Replacement
6. Drum assembly installation
(1) Align the two positioning holes of a new
drum assembly with the positioning pins
shown in the figure and put the drum
assembly on the mechanical deck.
n
. Hold a new drum assembly keeping away from
the video head during installation.
. Take care that the drum assembly does not
touch the CTL head, TC head, and peripheral
tape guide.
(2) Push the flange and drum support of the drum
assembly with fingers and then connect the
connector of the drum into the connectors on
the MDR-1 board.
(3) Tighten the two screws.
[Tightening torque:
20 x 10
n
Pushing the brush support in the slanting
direction, may cause a brush to be disen-
gaged.
7. Full-top sensor installation
Insert the connector of the full-top sensor.
Push the full-top sensor in the direction A until
the tip of the full-top sensor will go to the surface
of the lower drum.
After that, fix the full-top sensor with one screw.
8. Brush assembly connector
connection
Connect the flexible card wire of the brush
assembly to the connector CN5 on the HN-224
board.
9. VH cleaner installation
Pass the VH cleaner through the pin and hook the
spring. Connect the connector disconnected in step
1 to the connector CN2 on the HN-224 board.
3-28
Drum assembly
Positioning
holes
Positioning
pin
–2 N.m (2 kgf.cm)]
Screw (M2 x 5)
Screw (M2 x 5)
Positioning pin
Brush support
Screw (M1.4 x 3.5)
Full-top sensor
A
Brush assembly
Flexible card wire
CN5
HN224 board
Flange
DNV-5
DNW-7/90/90WS