Sony DVW-709WS/709WSP, DVW-790WS/790WSP manual Replacing the DC Fans, Upper DC Fan

3-5. Replacing the DC Fans

3-5-1. Upper DC Fan

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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

3-5. Replacing the DC Fans

MB-811 board

CN55

Nut plate

P 2.6x16

DC fan

Board guide (R2)

Precision P 2.6x5

DC fan P 2.6x16 Board guide (R1)

Nut plate

Hole

Hole

Board guide (R2)

COPAL

F251R

Direction of the DC fan when attached

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DVW-790WSP/709WSP/707P P2V1