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 Silicon Graphics Zx10 Visual Workstation Owner's Guide
(document number: 007-4327-002 / published: 2000-09-20)    table of contents  |  additional info  |  download
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Chapter 9. Servicing the System
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Chapter 9. Servicing the System

This chapter describes how to replace the major components of your system.

Warning: This is a user-serviceable system. Service and upgrade tasks should be performed by users who can follow instructions in a manual to service equipment, and can do so without harm to themselves or damage to the equipment.

Before You Begin

Warning: The system is always on when connected to AC power. Before opening the system, disconnect the system's power cord from its AC power outlet.

Warning: Internal components may be at high temperatures. Allow time for them to cool before handling them.

Warning: Internal components can be damaged by static electricity. Use an antistatic wrist strap connected to the bare metal of the system's chassis to protect against electrostatic discharge.

Note: “Right side” and “left side” are as seen from the front of the system.

See Chapter 7, “Gaining Access to System Components” for details on opening the system and protecting against electrostatic discharge.

The procedures in this chapter assume you have already removed the left side panel from the system.

Floppy Disk Drive

The floppy disk drive occupies the lowest front-access device bay.

Figure 9-1. Replacing the Floppy Disk Drive


To replace the floppy disk drive:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Disconnect the power and data cables from the drive.

  2. Remove and retain the screws securing the floppy disk drive to its bay (left side only).

  3. Slide the drive out the front of the base unit chassis.

  4. Slide the new drive into the base unit chassis from the front.

  5. Connect the data and power cables to the new drive.

  6. Secure the new drive to its bay with the screws removed previously.

Front-Access Peripheral Device

Three 5.25-inch x 1.6-inch peripheral devices may be installed in front-access device bays. Peripheral devices in these bays are accessible from the front of the system. The CD-ROM drive occupies the topmost front-access device bay. Other front-access devices can include Zip or Jaz drives, tape drives, and CD-Recorder (CD-R) drives.

Figure 9-2. Front-Access Peripheral Device Bays


To add or replace a front-access peripheral device :

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

Warning: The CD-ROM drive contains a laser and is classified as a Class 1 Laser Product. To prevent direct exposure to the laser beam and to avoid hazardous radiation exposure, do not try to open the CD-ROM drive enclosure. Return the drive to the manufacturer for repair.

  1. Remove the faceplate. See Chapter 7, “Gaining Access to System Components”.

  2. If adding a front-access device, remove the plastic blank from the faceplate and the metal blank from the base unit chassis that cover the opening for the device.

  3. If replacing a front-access device, disconnect the power and data cables from the device.

    Figure 9-3. Drive Rails and Release Tabs on a Front-Access Device


  4. If replacing a front access device, push in the tabs on either side of the device and pull the device out the front of the chassis.

  5. Remove the drive rails from the old device and secure them to the new device.

  6. Slide the new device into the base unit chassis until the tabs on the drive rails engage.

  7. Connect the data and power cables to the new device.

    Warning: For continued protection against fire and energy hazards, connect devices in the front-access device bays only to SCSI Channel B.

  8. Replace the faceplate.

3.5-inch peripheral devices may also be installed in front-access device bays. Such devices are generally not accessible from the front of the system, and require a device tray (shown in the following figure) for installation in front-access device bays.

To add or replace a 3.5-inch device in a front-access bay:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Remove the faceplate. See Chapter 7, “Gaining Access to System Components”.

  2. If adding a device, remove the plastic blank from the faceplate and the metal blank from the base unit chassis that cover the opening for the device.

  3. If replacing a device, disconnect the power and data cables from the device.

  4. If replacing a device, remove and retain the screws securing the device tray to the front-access bay, and remove the tray from the bay.

  5. If replacing a device, separate it from the 3.5-inch mounting bracket in the device tray.

  6. Attach the new device to the 3.5-inch mounting bracket in the device tray.

  7. Place the device tray in the front-access device tray and secure it to the bay with the screws removed previously.

  8. Connect the power and data cables to the device.

  9. Replace the faceplate.

A 3.5-inch device tray is shown in the following figure.

Figure 9-4. 3.5-Inch Device Tray


Internal-Access Peripheral Device

Warning: Mishandling a removed disk drive can cause the heads to crash! Subsequent failures may not be noticeable for three to six months. Handle disk drives carefully to avoid damage.

Three 3.5-inch x 1.0-inch peripheral devices, or two 3.5-inch x 1.6-inch peripheral devices, may be installed in the internal-access device bays. These bays are located in a removable cage beneath the front-access device bays, immediately under the floppy disk drive. Peripheral devices in these bays are not accessible from the front of the system. Such devices are usually SCSI disk drives, including the system's primary disk drive.

Figure 9-5. Internal-Access Device Bay


To add or replace an internal-access peripheral device:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Disconnect the power and data cables from all of the devices in the internal-access device cage. Note which cables connect to each device.

  2. Remove and retain the screw securing the cage to the base unit chassis.

  3. Push the release lever and slide the cage back, down, and out of the base unit chassis.

    Figure 9-6. Removing the Internal-Access Device Cage


  4. If replacing an internal-access device, remove and retain the screws securing the device to the cage, and remove it from the cage.

  5. Place the new device in the cage and secure it with the screws removed previously.

    Figure 9-7. Removing or Replacing an Internal-Access Device


  6. Align the tabs on the top of the internal-access device cage with the openings in the bottom of the front-access device cage. Then push the release lever, and slide the cage up and forward into the base unit chassis until the release lever engages.

  7. Secure the cage to the base unit chassis with the screw removed previously.

  8. Connect the power and data cables to all of the devices in the cage.

    Warning: For continued protection against fire and energy hazards, connect devices in the internal-access device bays only to SCSI Channel B.

Expansion Card

The system board contains sockets in which expansion cards (such as the graphics controller card) are installed. See Chapter 8, “Upgrading the System” and the System Board Guide for more information on expansion cards and their sockets.

To avoid damaging an expansion card and voiding its warranty, take the following precautions:

  • Handle the expansion card only by the edges. Do not touch the metallic finger contacts.

  • Do not bend, twist, drop, or otherwise handle the expansion card carelessly.

  • Do not expose the expansion card to moisture or extreme temperatures.

  • Do not remove the expansion card from its antistatic package until you are ready to install it.

    Figure 9-8. Expansion Card


To replace an expansion card:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Disconnect any external and internal cables from the expansion card.

  2. Remove and retain the retaining screw that secures the card to the card guide.

  3. Pull the card straight out of its socket, and place the card on an antistatic surface.

  4. Remove the new card from its antistatic package and slide it into the socket from which you removed the old card. Push the new card into the socket until it is firmly seated.

  5. Secure the new card to the card guide with the retaining screw (6-32 x 0.25 hex head) removed previously.

  6. Connect any internal and external cables to the new card.

Memory Module

The system board contains sockets for eight dual inline memory modules (DIMMs).

  • Do not touch the metallic finger contacts.

  • Do not bend, twist, drop, or otherwise handle the DIMM carelessly.

  • Do not expose the DIMM to moisture or extreme temperatures.

  • Do not remove the DIMM from its antistatic package until you are ready to install it.

    Figure 9-9. Dual Inline Memory Module (DIMM)


To replace a DIMM:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. If replacing a DIMM, press the DIMM socket release tabs outward, away from each other; then grasp the top edge of the DIMM and pull it out of the socket.

  2. Remove the new DIMM from its antistatic package. Verify the DIMM has gold-plated fingers that match the gold-plated socket contacts, and the slot keys on the DIMM match the slot keys in the DIMM socket.

  3. Orient the DIMM so that the notches match the keys in the socket.

  4. Push gently straight down until the release tabs snap into place.

  5. Restart the system for the BIOS to detect the new memory.

For more information on DIMMs, DIMM sockets, and system memory configurations, see the System Board Guide.

Processor Bus Terminator

On a system with only one processor, a processor bus terminator occupies the other processor slot on the system board. This module ensures proper termination for the processor bus; without it, the system will not function. When you add a second processor, you must remove this module and replace it with the new processor.

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

To remove the processor bus terminator:

Carefully pull the terminator card out of the processor slot.

For more information on the processor bus terminator, see the System Board Guide.

Processor Module

The system board contains sockets for two processor modules. Each processor module is secured to the system board with retention clips.

To replace a processor module:

Warning: The system is always on when connected to AC power and the power supplies are switched on. Before opening the system, switch off both power supplies.

  1. Pull the locking tabs on the retention clips outward, and slide the processor module out of the retention clips and its slot.

  2. Remove the new processor from its antistatic package, and align the processor module over the retention clips and the slot. The processor module is keyed and fits only one way.

  3. Press the processor module down until it seats in the slot and the locking tabs on the retention clips click into place.

For more information on processors and processor socket locations, see the System Board Guide.

Power Supply

Warning: There are no user-serviceable parts in the power supply. Return the power supply to the manufacturer for repair.

The power supply is located in the upper section of, and is secured to the back of, the base unit chassis. See Chapter 10, “System Hardware and Specifications” for technical information on the power supply.

Figure 9-10. Power Supply on Back of Chassis


Figure 9-11. Power Supply Unit


To replace the power supply:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Disconnect the AC power cord from the AC power receptacle at the back of the base unit chassis.

  2. Disconnect all power cables from all internal peripheral devices and the system board. Note the locations to which the power cables are connected:

    Table 9-1. Power Cable Connections

    Cable

    Connects to

    P1 and P2

    ATX power connectors on the system board

    P3 through P8

    CD-ROM drive, disk drives, and other peripheral devices

    P9

    Floppy disk drive


  3. Remove and retain the screws securing the power supply to the back of the base unit chassis.

    Caution: Support the power supply as you remove the screws. Do not let the power supply fall or damage to equipment may result.

  4. Remove the power supply from its shelf and the base unit chassis.

  5. Place the new power supply on its shelf in the base unit chassis and secure it with the screws removed previously.

  6. Make sure the AC voltage selection switch on the power supply (on the back of the base unit) is set to the proper line voltage for your location.

    • If your location uses 90 to 135 volts, the number 115 must be visible.

    • If your location uses 180 to 264 volts, the number 230 must be visible.

      Warning: If you do not set the AC voltage selection switch on the power supply correctly, equipment damage may occur when you connect the system to AC power.

  7. Reconnect the power cables to the system board and internal devices.

  8. Reconnect the AC power cable to the AC power receptacle at the back of the base unit chassis.

Cooling Fans

Two internal fans ensure proper airflow to cool system components in the base unit. One fan is installed in a housing at the front of the base unit chassis. Another fan is secured to the rear of the base unit chassis, and has a cooling duct to direct the airflow over the system's processors.

Caution: Arrows on each fan indicate airflow direction and rotation. Install each fan with the airflow arrow pointing into the chassis.

Figure 9-12. Front Fan Assembly


To replace the front fan:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Disconnect the fan's power cable from its power supply connector.

  2. Disengage the release on top of the fan assembly in the expansion card guide, and gently pull the fan assembly out of its housing.

  3. Feed the power cable for the new fan into the front fan housing and through the lowest opening in the card guide assembly.

  4. Align the new fan assembly with the opening in its housing, and gently push the fan assembly into its housing until the release on top of the fan assembly engages.

  5. Connect the new fan's power cable to its power supply connector.

    Figure 9-13. Rear Fan Assembly


To replace the rear fan:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Remove the cooling duct to gain access to the rear fan. Pop the duct out of its catches on the rear fan housing.

  2. Disconnect the fan's power cable from its power supply connector.

  3. Remove and retain the screws securing the fan to the back of the base unit chassis.

    Caution: Support the fan as you remove the screws. Do not let the fan fall onto any installed expansion cards.

  4. Note the airflow direction of the new fan (into the chassis) and the position the fan correctly on the chassis.

  5. Replace the screws removed previously to secure the fan to the chassis.

  6. Connect the fan's power cable to its power supply connector.

  7. Replace the cooling duct. Pop the duct into its catches on the rear fan housing.

System Board

See previous procedures in this chapter when necessary. See the System Board Guide for connector and socket locations.

Figure 9-14. System Board


To remove the existing system board:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Remove the top cover. See Chapter 7, “Gaining Access to System Components”.

  2. Note where all cables are connected to the system board, and then disconnect them from the system board.

  3. Note where expansion cards are installed, and then remove them, placing them on an antistatic surface.

  4. Remove the DIMMs, the processor modules, and the processor bus terminator (if installed), and place them on an antistatic surface.

  5. Remove the nuts from the processor retention clips, and then remove the clips from the system board.

  6. Remove the 13 screws from the system board.

  7. Lift the system board out of the base unit and place it on an antistatic surface.

To install a new system board:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Connect the power switch/LED cable to connector J24 before installing the new system board.

  2. Place the new system board into the base unit front edge first, and then lower the back edge into the base unit. Slide the system board toward the back of the base unit until all mounting holes are aligned with their standoffs.

  3. Secure the new system board to the base unit using the 13 screws removed previously.

  4. Secure the processor retention clips to the system board with the nuts removed previously.

  5. Replace the DIMMs, the processors, and the processor bus terminator (if needed) in the appropriate sockets.

  6. Replace the expansion cards in the appropriate expansion card sockets.

  7. Reconnect the remaining cables to the system board.

  8. Replace the top cover. See Chapter 7, “Gaining Access to System Components”.

CMOS/Clock Lithium Battery

The CMOS/clock lithium battery is located at the bottom of the system board, next to the lowest expansion card slots. The battery may be hidden under installed expansion cards.

Figure 9-15. CMOS/Clock Lithium Battery


If you must replace the battery, the system will lose its operating parameters stored in CMOS memory. As a result, the system BIOS parameter settings are lost. After you replace the battery, you must reset the date and time and reconfigure the BIOS.

See the System Board Guide for detailed information on replacing the battery and on using BIOS Setup to configure the BIOS.

Chassis Intrusion Alarm Switch

The chassis intrusion alarm switch is mounted to the bottom panel of the base unit chassis near the front card guide. See the System Board Guide for connector and socket locations.

Figure 9-16. Chassis Intrusion Alarm Switch


To replace the chassis intrusion alarm switch:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Disconnect the alarm switch cable from its connector on the system board.

  2. Remove and retain the screws that secure the switch to the base unit chassis, and remove the switch and its cable from the chassis.

  3. Align the new switch with the chassis mounting holes and secure it to the chassis with the screws removed previously. Make sure the switch tab faces the back of the base unit.

  4. Connect the alarm switch cable to its connector on the system board.

Power Switch, System LEDs, and Light Pipe

The power switch and system LEDs are mounted to the front of the base unit chassis. A light pipe secured to the faceplate guides the light from the LEDs to openings on the faceplate. See the System Board Guide for power switch and LED connector locations and details.

Figure 9-17. Power Switch and System LEDs


Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. Remove the faceplate. See Chapter 7, “Gaining Access to System Components”.

  2. Remove the internal-access device cage. See “Internal-Access Peripheral Device” in this chapter.

  3. Disconnect the power switch/system LED cable from its connector on the system board.

  4. Remove and retain the screw that secures the power switch to the base unit chassis.

  5. Turn the power switch until its key matches the keyhole in the chassis, and then pull the power switch into the chassis.

  6. For each system LED, gently spread the tabs holding it to the chassis, and pull the LED into the chassis.

  7. Remove the power switch, system LEDs, and cable from the chassis.

To replace the power switch and system LEDs:

Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet.

  1. From inside of the chassis, gently push each LED into the tabs that hold it to the chassis until it clicks into place. Ensure the green LED is on the bottom.

  2. From inside the chassis, turn the power switch until its key matches the keyhole in the chassis, and then push the power switch into the hole.

  3. Turn the power switch until the screw hole in the switch matches the keyhole in the chassis, and then secure the switch to the chassis with the screw removed previously.

  4. Connect the power switch/system LED cable to its connector on the system board.

  5. Replace the internal-access device cage.

  6. Replace the faceplate.

    Figure 9-18. Light Pipe


    Warning: The system is always on when connected to AC power. Before performing this task, disconnect the system's power cord from its AC power outlet

  7. Remove the faceplate. See Chapter 7, “Gaining Access to System Components.”

  8. Remove and retain the screw securing the light pipe to its mount on the back of the faceplate.

  9. Remove the light pipe.

  10. Secure the new light pipe to the mount on the back of the faceplate with the screw removed previously.

  11. Replace the faceplate.

Prev Table of Contents Next
Chapter 8. Upgrading the System  Chapter 10. System Hardware and Specifications 

Silicon Graphics Zx10 Visual Workstation Owner's Guide
(document number: 007-4327-002 / published: 2000-09-20)    table of contents  |  additional info  |  download

    Front Matter
    About This Guide
    Chapter 1. Setting Up the Hardware
    Chapter 2. Setting Up the Software
    Chapter 3. Configuring the System
    Chapter 4. Operating the System
    Chapter 5. Troubleshooting Operational Problems
    Chapter 6. Reinstalling the Operating System
    Chapter 7. Gaining Access to System Components
    Chapter 8. Upgrading the System
    Chapter 9. Servicing the System
    Chapter 10. System Hardware and Specifications
    Appendix A. Ergonomics Guide
    Index


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