Sony DVW-790WS/790WSP User Manual

3-23

DVW-790WS/709WS/707

DVW-790WSP/709WSP/707P P2V1

3-5. Replacing the DC Fans

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.

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 2.6

x5) to

remove the board guide (R2).

4.

Loosen the two screws (P 2.6

x16), and then

remove the DC fan and plate nut.

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.

MB-811
board

CN55

Nut plate

DC fan

Board guide (R2)

P 2.6

x

16

Precision P 2.6

x

5

COPAL

F251R

DC fan

Nut plate

P 2.6

x

16

Board guide (R1)

Hole

Hole

Board guide (R2)

Direction of the DC fan
when attached