Replacing The Dc Fans; Upper Dc Fan - Sony Digital Betacam DVW-707 Maintenance Manual

3-5. Replacing the DC Fans

3-5-1. Upper DC Fan

n
The bearing of the DC fan is a precision part. Be
careful not to grasp the fan by its blade, bump,
and drop it.
Unduly shock may damage the bearing, that can
result in abnormal noise during the fan operation.
Removal
1. Pull the plug-in boards (DCP and DVP board
assemblies) out. (Refer to the Maintenance
Manual Part 1, Section 1-9.)
2. Disconnect the harness from the connector
(CN55) on the MB-811 board.
3. Remove the precision screw (P 2.6x5) to
remove the board guide (R2).
4. Loosen the two screws (P 2.6x16), and then
remove the DC fan and plate nut.
Reinstallation
1. While the plate nut is attached loosely to the
DC fan with the two screws, attach the DC
fan onto the board guide (R2).
2. Tighten the two screws attached loosely in
step 1.
3. Route the harness of the DC fan through the
hole of the board guide (R2) and also through
the hole of the board guide (R1).
4. Reattach the DC fan by reversing the remov-
ing steps.
DVW-790WS/709WS/707
DVW-790WSP/709WSP/707P P2V1
MB-811
board
Nut plate
P 2.6
DC fan
Board guide (R2)
Precision P 2.6x5
DC fan
P 2.6x16
Nut plate
Direction of the DC fan
when attached
3-5. Replacing the DC Fans
CN55
x
16
Board guide (R1)
Hole
Hole
Board guide (R2)
COPAL
F251R
3-23