IBM 9114-275 Installation Guide - Page 51

Fan Tray Assembly, Removing the Fan Tray Assembly, crontab, AIX documentation

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entry, so unless the crontab file is edited to remove this entry, the customer continues to be reminded of the failure despite its having been repaired. Use the crontab -l command to read the crontab file to determine if an entry exists. Use the crontab -e command to edit the file. Documentation for the AIX operating system is available from the IBM pSeries Information Eserver Center at http://publib16.boulder.ibm.com/pseries/en_US/infocenter/base. Select AIX documentation. The AIX Documentation CD contains the base set of publications for the operating system, including system-management and end-user documentation. To replace the hot-swap cooling fans, do the following: 1. Pull out on the locking knob on the replacement fan to ensure that it is unlocked. 2. Align the fan with the slot in the fan tray assembly with the power plug over the connector. 3. Place the fan into the fan tray. 4. Press down on the fan to ensure that the power plug is connected. Note: The fan starts to run when the power plug connects. 5. Press the locking knob down until you feel it lock. 6. Replace the service access cover as described in "Service Access Cover Replacement" on page 28. 7. Return the system to the operating position as described in "Placing the Model 275 into the Service and Operating Position" on page 26. Fan Tray Assembly The three system cooling fans rest in a fan tray. The fans can remain in the tray while it is removed or replaced. Removing the Fan Tray Assembly To remove the fan tray assembly, do the following: 1. Place the system into the service position as described in "Placing the Model 275 into the Service and Operating Position" on page 26. 2. Shut down the system as described in "Stopping the System" on page 25. 3. Disconnect the power source from the system. Note: This system may be equipped with a second power supply. Before continuing with this procedure, ensure that the power source to the system is completely disconnected. 4. Remove the service access cover as described in "Service Access Cover Removal" on page 28. 5. If your system does not contain a SCSI media device, go to the next step. If your system does contain SCSI media device, press the media bay chassis latches and pull the bay chassis forward in the system chassis, but do not remove it from the system chassis. 6. Locate the fan tray assembly, as shown in the following illustration. 7. Release the LED light pipe plate by pressing the latch and rotating the plate up off the LED light pipes. 8. Pull up on the two blue latch buttons located at either end of the fan tray until you feel them unlock. 9. While holding the blue plastic tab on the back of the disk drive backplane, lift the fan assembly straight up and out from the system unit. Chapter 3. Installing Options 35

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entry, so unless the
crontab
file is edited to remove this entry, the customer continues to be reminded
of the failure despite its having been repaired. Use the
crontab -l
command to read the
crontab
file to
determine if an entry exists. Use the
crontab -e
command to edit the file.
Documentation for the AIX operating system is available from the IBM
Eserver
pSeries Information
AIX documentation
. The
AIX Documentation
CD contains the base set of publications for the operating system, including
system-management and end-user documentation.
To replace the hot-swap cooling fans, do the following:
1.
Pull out on the locking knob on the replacement fan to ensure that it is unlocked.
2.
Align the fan with the slot in the fan tray assembly with the power plug over the connector.
3.
Place the fan into the fan tray.
4.
Press down on the fan to ensure that the power plug is connected.
Note:
The fan starts to run when the power plug connects.
5.
Press the locking knob down until you feel it lock.
6.
Replace the service access cover as described in “Service Access Cover Replacement” on page 28.
7.
Return the system to the operating position as described in “Placing the Model 275 into the Service
and Operating Position” on page 26.
Fan Tray Assembly
The three system cooling fans rest in a fan tray. The fans can remain in the tray while it is removed or
replaced.
Removing the Fan Tray Assembly
To remove the fan tray assembly, do the following:
1.
Place the system into the service position as described in “Placing the Model 275 into the Service and
Operating Position” on page 26.
2.
Shut down the system as described in “Stopping the System” on page 25.
3.
Disconnect the power source from the system.
Note:
This system may be equipped with a second power supply. Before continuing with this
procedure, ensure that the power source to the system is completely disconnected.
4.
Remove the service access cover as described in “Service Access Cover Removal” on page 28.
5.
If your system does not contain a SCSI media device, go to the next step. If your system does contain
SCSI media device, press the media bay chassis latches and pull the bay chassis forward in the
system chassis, but do not remove it from the system chassis.
6.
Locate the fan tray assembly, as shown in the following illustration.
7.
Release the LED light pipe plate by pressing the latch and rotating the plate up off the LED light pipes.
8.
Pull up on the two blue latch buttons located at either end of the fan tray until you feel them unlock.
9.
While holding the blue plastic tab on the back of the disk drive backplane, lift the fan assembly straight
up and out from the system unit.
Chapter 3. Installing Options
35