2.1 Safety Information

This section describes important safety information you need to know prior to removing or installing parts in the server.

For your protection, observe the following safety precautions when setting up your equipment:

Follow all Sun standard cautions, warnings, and instructions marked on the equipment and described in Important Safety Information for Sun Hardware Systems, 816-7190.
Ensure that the voltage and frequency of your power source match the voltage and frequency inscribed on the equipment s electrical rating label.
Follow the electrostatic discharge safety practices as described in this section.

2.1.1 Safety Symbols

The following symbols might appear in this book, note their meanings:

Caution - There is a risk of personal injury and equipment damage. To avoid personal injury and equipment damage, follow the instructions.

Caution - Hot surface. Avoid contact. Surfaces are hot and might cause personal injury if touched.

Caution - Hazardous voltages are present. To reduce the risk of electric shock and danger to personal health, follow the instructions.

2.1.2 Electrostatic Discharge Safety

Electrostatic discharge (ESD) sensitive devices, such as the motherboard, PCI cards, hard drives, and memory cards require special handling.

Caution - The boards and hard drives contain electronic components that are extremely sensitive to static electricity. Ordinary amounts of static electricity from clothing or the work environment can destroy components. Do not touch the components along their connector edges.

2.1.2.1 Use an Antistatic Wrist Strap

Wear an antistatic wrist strap and use an antistatic mat when handling components such as drive assemblies, boards, or cards. When servicing or removing server components, attach an antistatic strap to your wrist and then to a metal area on the chassis. Then disconnect the power cords from the server. Following this practice equalizes the electrical potentials between you and the server.

2.1.2.2 Use an Antistatic Mat

Place ESD-sensitive components such as the motherboard, memory, and other PCB cards on an antistatic mat.

2.3 Preparing for Component Replacement

Before you can remove and install components that are inside the server, you must prepare the server for service.

Note - When replacing the hard drives or power supplies, not all of these tasks are necessary. The replacement procedures for those components address this fact.

Power Off the Server

Performing a graceful shutdown makes sure all of your data is saved and the system is ready for restart.

Log in as superuser or equivalent.

Depending on the nature of the problem, you might want to view the system status, the log files, or run diagnostics before you shut down the system. Refer to the administration documentation for log file information.

Notify affected users.

Refer to your administration documentation for additional information.

Save any open files, and quit all running programs.

Refer to your application documentation for specific information on these processes.

Shut down the operating system.

Refer to the operating system documentation for additional information.

Shut down the server.

You can shut down the server from the CLI, or you can use the Power button on the front of the server to initiate a graceful system shutdown. This button is recessed to prevent accidental server power-off. Use the tip of a pen to operate this button.

Disconnect the Cables From the Server

Caution - The system supplies standby power to the circuit boards even when the system is powered off.

Label all of the cables connected to the server.

Disconnect the following cables as appropriate:
- PCI cards
- Alarm
- TTYA
- SER MGT
- NET MGT
- USB ports
- Network ports
- Power supplies

Remove the Server From the Rack

Remove the server from the rack prior to performing cold-swappable replacement procedures.

Caution - The server weighs approximately 64 lbs (32 kg). Two people are required to dismount and carry the chassis.

Remove the server from the rack.

The steps to remove the server from the rack depend on the mounting kit. For sliding mounting kits, you can simply release the slides to remove the server. For hardmount kits, you must remove the securing screws from the front and rear brackets.

Set the server on a sturdy work surface.

Prepare an antistatic surface on which to set parts during removal and installation.

Place ESD-sensitive components such as the printed circuit boards on an antistatic mat. The following items can be used as an antistatic mat:
- Antistatic bag used to wrap a Sun replacement part
- Sun ESD mat, part number 250-1088
- Disposable ESD mat (shipped with some replacement parts or optional system components)

Attach an antistatic wrist strap.

When servicing or removing server components, attach an antistatic strap to your wrist and then to a metal area on the chassis.

Remove the Top Cover

All components that are not hot-swappable require the removal of the top cover.

Use a No. 2 Philips screwdriver to release the two captive screws (FIGURE 2-1).

FIGURE 2-1 Top Cover Removal

While pressing the top cover release button, slide the cover toward the rear of the server.

Lift the cover off the chassis, and set it aside.

Remove the Air Baffle

The removal of the air baffle is necessary only if you are servicing the following components:

Memory mezzanine or memory riser cards
Motherboard
Power distribution board
System/alarm LED board

Lift the air baffle.

Push on one side of the baffle, and remove the hinge peg from the chassis.

FIGURE 2-2 Removing the Air Baffle

Remove the Memory Mezzanine

The removal of the memory mezzanine is necessary only if you are servicing the following components:

Memory riser cards
Motherboard
Power distribution board

Lift the memory mezzanine levers at the same time.

FIGURE 2-3 Removing the Memory Mezzanine

Caution - One or more of the memory riser cards beneath the memory mezzanine might remain attached to the bottom of the mezzanine. Therefore, be careful when you remove the mezzanine.

Lift the memory mezzanine out of the chassis.

Remove the PCI Mezzanine

Removal of the PCI mezzanine is necessary only if you are servicing the following components:

PCI riser card
Motherboard
Power distribution board

Disconnect the three system cables that are connected to the PCI mezzanine board (FIGURE 2-4).

FIGURE 2-4 Removing the PCI Mezzanine

Lift the two securing handles on PCI mezzanine.

Lift the PCI mezzanine up and out the chassis, and place it on an antistatic mat.

Caution - One or more of the PCI riser cards beneath the PCI mezzanine might remain attached to the bottom of the mezzanine. Therefore, be careful when you remove the mezzanine.

Preparing for Service