1 Selecting a Work Area



This chapter briefly introduces the GT Graphics Subsystem and describes the environmental and electrical requirements for the work area in which the GT Graphics Subsystem is installed. 

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Introducing the Sun GT Graphics Subsystem  page 1
                                           
Work Area                                  page 2
                                           
Power and Grounding Requirements           page 3
                                           
Voltage Selection                          page 4
                                           
Tools Required for Installation            page 5

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Introducing the Sun GT Graphics Subsystem

Figure 1-1 on page 2 shows a typical Sun SPARC workstation and GT Graphics Subsystem . The GT Graphics Subsystem is a peripheral to the SPARC workstation and includes the following:

    Figure 1-1 A Typical Sun SPARC Workstation and GT Graphics Subsystem

Work Area

Before unpacking your system, decide where you want to put it. Select an appropriate work area that meets the specifications in Table 1-1.

In considering a work area for your system, you have the following major components to consider:

Caution -

The Graphics Tower must be installed as a deskside enclosure, in the upright position. Do not install the Graphics Tower as a desktop unit, in the horizontal position.

The system components are sturdy, but must be treated properly. Avoid extremes in temperature and other environmental hazards. Table 1-1 lists the acceptable environmental ranges for the system components.

    Table 1-1 System Environmental Ranges 

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Temperature  32 to 104F (0 to 40C)
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Humidity     5% to 80% (relative non-condensing)
             
Altitude     0 to 10,000 feet (0 to 3,048 meters)
             
Ventilation  Keep the work area well ventilated or air-conditioned to 
             avoid overheating
             
Dust         Keep the work area as dust-free as possible

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Caution -

The Graphics Tower has cooling vents at the top and bottom. These vents must have at least 3/4 inch (19mm) clearance. Never operate your Graphics Tower with any of the vents blocked or with a clearance of less than 3/4 inch (19mm).

Power and Grounding Requirements

In planning where to place your system, remember that each of the following items require access (by way of a separate power cord) to a power outlet:

Caution -

Not all power cords have the same current rating. Household extension cords do not have overload protection, and are not meant for use with computer systems. Do not use household extension cords with your GT Graphics Subsystem or with any associated equipment.

Before plugging in the power cable of any component of your graphics system, be sure that the line voltage and frequency are as required by the labels on the back of each unit. See "Voltage Selection," below. The label is affixed to the back of each unit indicating the intended operating voltage and frequency.

Warning -

Sun products are designed to work with single-phase power systems having a grounded neutral conductor. To reduce the risk of electrical shock, do not plug Sun products into any other type of power system. Contact your facilities manager or a qualified electrician if you are not sure what type of power is supplied to your building.

Use only safety agency approved (grounded) outlets. All servicing must be performed by qualified personnel.

Voltage Selection

Voltage selection for the Graphics Tower and the color monitor is done by an automatic selector in the power supply. These units do not have a voltage selection switch. The power supply automatically adjusts ac in-line operation to either 115V ac or 230V ac.

Warning -

As shipped, the Graphics Tower is configured for 115-volt operation. To operate on 230 volts, you must first replace the fuse with one of the proper size, as listed in Table 1-2.

The Graphics Tower fuse is in the ac module on the back of the tower, next to the LED power-on indicator. Table 1-2 specifies the fuse type.

    Table 1-2 Graphics Tower Fuse 

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Line Voltage  Fuse Type                Sun Part No.
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115           15 amp 250V slow-blow    140-1019-01
                                       
230           6.3 amp 250V time-delay  140-1030-01 

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Tools Required for Installation

To install the GT Graphics Subsystem, you will need the following tools: