Replacing the drive bay chassis fan assembly

Open the filer cover on the right side of the F85 by following Steps 1 through 11 of the procedure described in Opening the F85.

Unlatch and pull each disk drive 1 inch (25-mm) out of its slot.

Remove the SCSI backplane board by following Steps 3 through 5 of the procedure described in Removing the SCSI backplane board.

If a full-length expansion card is installed in expansion slot #1, remove it to ensure adequate clearance to remove the fan fastener from the bulkhead.

Disconnect the front cooling fan cable from the FAN1 (front fan) connector on the system board.

Remove the two fasteners that secure the fan to the bulkhead of the chassis by completing the following steps:

1. On the fan side, use the flat surface of a flat-tipped screwdriver to push the plunger of each fastener into the fastener barrel.
2. On the other side of the bulkhead, grasp the extended head of the fastener and pull it out completely.

   Set aside the two fasteners for later use.

Remove the fan from the chassis.

Slide the left side of the fan under the two chassis tabs on the left side and position the fan to rest on a third tab extending from the bulkhead.

Secure the fan to the bulkhead using the two fasteners you set aside.

Route the fan power cord through the hole in the bulkhead near the system board FAN1 connector.

Connect the fan power cord to the system board FAN1 connector.

Reinstall any expansion card you removed from slot #1.

Reinstall the SCSI backplane board by following Steps 1 through 4 of the procedure described in Installing the SCSI backplane board.

Close the F85.

Follow the procedure in Closing the F85.