IBM pSeries 690 Service Manual page 1029

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I/O Subsystem Fan

1. Press the green Start Service button on the UEPO switch.

2. Locate the fan to be replaced.

3. Turn off the power as described in "Powering Off and Powering On the System" on page 854.

4. Remove the DASD cage from the front of the fan to be removed (see "I/O Subsystem DASD 4-Pack"

on page 1012).

5. Slide the black retention latch on the fan assembly upward and, with the handle located on the fan,

pull the fan from the front of the I/O subsystem. A door automatically closes when the fan is removed,

preventing loss of airflow while the fan is out of the enclosure.

Note: All four openings to the front of the fans must be covered either by a DASD 4-pack or by a DASD

4-pack filler.

Replace in reverse order. When you have completed the replacement of the DASD fan, turn on the power

as described in "Powering Off and Powering On the System" on page 854, and press the white Service

Complete button on the UEPO switch. This completes the replacement.

1 DCA (DCA 1 shown)

2 I/O Subsystem Chassis

3 Fan (Fan 4 shown)

Chapter 9. Removal and Replacement Procedures