Sun Ultra 45 and Ultra 25 Workstations Service and Diagnostics Manual

This chapter describes common tasks that must be completed prior to performing a removal or installation procedure on any Sun Ultra 45 or Ultra 25 workstation.

The procedures described in this chapter are written for workstation service providers and system administrators.

Caution - To prevent equipment damage, review the safety requirements, safety symbols, and safety precautions in this chapter before you perform any replacement procedure.

This chapter contains the following topics:

• Section 2.1, Safety Information
• Section 2.2, Required Tools
• Section 2.3, Powering Off the Workstation
• Section 2.4, Finding Replacement Procedures

---

2.1 Safety Information

This section provides safety precautions to follow when servicing the Sun Ultra 45 or Ultra 25 workstation.

2.1.1 Safety Precautions

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.
• Follow the cautions, warnings, and instructions in the Sun Ultra 45 and Ultra 25 Workstations Safety and Compliance Guide, 819-2785. The document is available from:

http://www.sun.com/documentation/

• Ensure that the voltage and frequency of your power source match the voltage and frequency inscribed on the equipment's electrical rating label.
• Never push objects of any kind through openings in the equipment. Dangerous voltages might be present. Conductive foreign objects could produce a short circuit that could cause fire, electric shock, or damage to your equipment.

2.1.2 Safety Symbols

The following symbols might appear in this document:

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.

2.1.3 Electrostatic Discharge Safety

Electrostatic discharge (ESD)-sensitive devices, such as the motherboard, PCI cards, hard drives, and the NVRAM, 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.

Caution - Wear an antistatic wrist strap and use an antistatic mat when handling components such as drive assemblies, boards, or DIMMs. When servicing or removing workstation components, attach an antistatic strap to your wrist and then to a metal area on the chassis. Then disconnect the power cord from the workstation and the wall receptacle. Following this caution equalizes all electrical potentials with the workstation.

---

2.2 Required Tools

Use the following tools to service the Sun Ultra 45 or Ultra 25 workstations (FIGURE 2-1):

• No. 2 Phillips screwdriver
• No. 0 Phillips screwdriver
• Antistatic wrist strap
• Antistatic mat
• Container for screws

FIGURE 2-1 Required Tools

Though not required for component replacement, the following tools have proven helpful in certain situations:

• Needle nose pliers, tweezers, or hemostat
• Large jeweler's screwdriver
• Flashlight
• Digital voltage meter (DVM)

Place ESD-sensitive components such as the motherboard, memory, PCI cards, hard drives, and the NVRAM 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 (available through your Sun sales representative)
• Disposable ESD mat (shipped with replacement parts or optional system components)

---

2.3 Powering Off the Workstation

1. Notify any affected users that the system will be powered down.

2. Save any open files and quit all applications.

3. Press and release the Power button or the Sleep key (FIGURE 2-2).

If you pressed the Sleep key, select "Shutdown," from the menu.

Caution - If the system is not running the Solaris Operating System (OS), you may need to press and hold the Power button for five seconds. The file system could be corrupted. For more information, refer to the documentation for the operating system in use.

4. Power off and disconnect any peripherals (FIGURE 2-3).

5. Disconnect the keyboard, mouse, monitor, and network connections.

FIGURE 2-2 Power Button and Sleep Key Location

FIGURE 2-3 Disconnecting the Workstation Cables

2.3.1 Opening the Workstation

1. Press down the two latches on the side cover and lift the cover off the workstation (FIGURE 2-4).

2. Using both hands, place the workstation on its side.

3. Pivot the workstation support stabilizer underneath the workstation.

4. Attach the antistatic wrist strap.

Wrap the adhesive portion around your wrist. Attach the copper end to the rear vent of the chassis. Ensure that the location does not interfere with your service procedure.

5. Remove the access panel:

a. Slide the lock block towards the front of the system.

b. Press and release the two latches and lift the access panel.

6. Disconnect the power cord from the workstation.

7. If necessary, remove any long PCI cards and pull the fan tray out of the chassis.

8. Find your removal or replacement procedure (TABLE 2-1).

FIGURE 2-4 Removing the Side Cover and Access Panel

---

2.4 Finding Replacement Procedures

Identify the component that you need to replace in FIGURE 2-5 and refer to TABLE 2-1 to find the replacement procedure.

FIGURE 2-5 Major Workstation Components

Sun Ultra 45 and Ultra 25 Workstations Service and Diagnostics Manual

819-1892

Copyright © 2006, Sun Microsystems, Inc. All Rights Reserved.