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C H A P T E R  5
Removing and Installing Miscellaneous Assemblies

This chapter describes how to remove and install miscellaneous assemblies in the system. For a list of part numbers for field-replaceable units (FRUs) and optional equipment, see Illustrated Parts Breakdown.

The following tasks are covered in this chapter:

 

How to Remove a Power Supply


caution icon

Caution - A power supply must always occupy each power supply bay. If a power supply fails, you must leave the failed power supply in its bay until your are able to install a functioning replacement power supply. A failed power supply still acts as an air baffle channeling airflow to cool the bottom row of disk drives in the disk cage. Replace the failed power supply as soon as possible to regain N+1 power redundancy.



Note - During a hot-swap operation, after you remove a fan tray or power supply, wait for an acknowledgement message on the system console before installing a replacement part; otherwise, the environmental monitoring software will not recognize the new device and false error conditions will result.



Note - Use only Sun Fire V890 200-240 VAC power supplies in the Sun Fire V890 system.


Before You Begin

It is not necessary to power off the system if you are removing a redundant power supply. For more information about power supplies, see:


Note - Unlike hot-pluggable devices, you can install or remove a power supply or fan tray while the system is operating at the ok prompt. However, in the case of the power supply, you must issue a reset-all command at the ok prompt in order for the system to recognize the change the next time the operating system is booted.


If you are not performing a hot-plug procedure, complete this task:

What to Do

1. Identify the power supply that you want to remove.

For information about LEDs, see About Power Supply LEDs.

2. Release the AC power cord from the strain-relief tie-wrap on the power supply.

Press the tab on the head of the tie-wrap to release it.


3. Unplug the AC power cord from the power supply and the AC power outlet.


4. Loosen the two captive Phillips screws securing the power supply to the system rear panel.


5. Pull the power supply out from its bay.

Use one hand to pull the power supply out while using the other hand to support the power supply as it is removed from the system.


Note - When hot-swapping a power supply, do not disengage and reengage the supply in rapid succession. Rapid seating and unseating of a power supply will result in false error conditions. After removing a supply, wait for an acknowledgement message on the system console before installing a new supply; otherwise, the environmental monitoring software will not recognize the new device and false error conditions will result.



caution icon

Caution - A power supply must always occupy each power supply bay. If a power supply fails, you must leave the failed power supply in its bay until your are able to install a functioning replacement power supply. A failed power supply still acts as an air baffle channeling airflow to cool the bottom row of disk drives in the disk cage. Replace the failed power supply as soon as possible to regain N+1 power redundancy.


What Next

To replace the power supply, complete this task:

How to Install a Power Supply

If you are installing a redundant power supply, it is not necessary to shut down and power off the system. For more information, see:


Note - Unlike hot-pluggable devices, you can install or remove a power supply or fan tray while the system is operating at the ok prompt. However, in the case of the power supply, you must issue a reset-all command at the ok prompt in order for the system to recognize the change the next time the operating system is booted.



Note - After removing a power supply during a hot-plug operation, wait for an acknowledgement message on the system console before installing a new supply; otherwise, the environmental monitoring software will not recognize the new device and false error conditions will result.



Note - Use only Sun Fire V890 200-240 VAC power supplies in the Sun Fire V890 system.


What to Do

1. Identify the bay into which you want to install the power supply.

For information about LEDs, see About Power Supply LEDs.

2. Slowly slide the power supply into its bay until the connectors on the power supply are fully engaged with the connectors on the power distribution board.



caution icon

Caution - If you are hot-plugging a redundant supply, take care to avoid jarring or shocking the system. Also, do not engage and disengage the supply in rapid succession. Rapid seating and unseating of a power supply will result in false error conditions.


3. Tighten the two captive screws that secure the power supply to the chassis.

4. Connect the AC power cord to both the power supply and a dedicated AC power outlet.

Insert the female end of the power cord through the strain-relief tie-wrap loop located to the right of the supply. Tighten the tie-wrap to secure the connection.


What Next

If you installed this part as a new option while the system was powered off, you need to perform a reconfiguration boot. A reconfiguration boot is required in order for the operating system to recognize the new device. See:

 

How to Remove the System Status Assembly

Before You Begin

Complete these tasks:

What to Do

1. Remove the removable media bezel from the system.

Remove the two Phillips screws securing the bezel to the front of the system.


2. Remove the two No. 2 Phillips screws and the three No. 1 Phillips screws securing the system status assembly to the front of the system.

Take care not to damage the flex circuit.


3. Carefully remove the status assembly from the front of the system.

The status assembly is held in place by tabs on the left side and right top of the assembly.

4. Disconnect the system status cable (P31) from the connector on the status assembly.

5. Place the status assembly on an antistatic mat.

What Next

To replace the system status assembly, complete this task:

How to Install the System Status Assembly

Before You Begin

Complete this task:

What to Do

1. Attach the system status cable (P31) to the connector on the side of the system status assembly.

2. Align the status assembly into position on the front of the system.

Insert the tabs on the left side of the status assembly into their cutouts first, as you align the metal tab on the right top side with its cutout.

3. Replace the five Phillips screws that secure the status assembly to the front of the system.

4. Replace the removable media assembly bezel on the front of the system.

Replace the two Phillips screws that secure the bezel to the system front.

What Next

To reassemble the system, complete this task:

 



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