HP Compaq SP700 Manuale utente

3-1

Compaq Professional Workstation SP700 Maintenance and Service Guide

Chapter 3

Removal and Replacement Procedures

This chapter provides subassembly/module-level removal and replacement procedures for the

Compaq Professional Workstation SP700.

After completing all necessary removal and replacement procedures, run the Compaq Setup and

Diagnostics program to verify that all components are operating properly.

Serial Number

Provide the computer serial number to Compaq whenever you request information or order spare

parts. The serial number is located just above the right top side of the side access panel ➊and on

the rear of the workstation 2.

For asset control, the serial number is also embedded in the EPROM on the system board. If the

system board is replaced with a spare part from Compaq, an invalid serial number condition will

be reported during POST. To clear the condition, reenter the original serial number through

Computer Setup.

NOTE: If a system board from another workstation is installed, POST recognizes the serial

number as a valid number.

Figure 3-1. Serial number locations

3-2 Removal and Replacement Procedures

Service Preparations

Before beginning any of the removal and replacement procedures, complete the

following steps:

CAUTION: The power supply in the Compaq Professional Workstation SP700 has

an auxiliary power section. This section is always active as long as the unit is

plugged into a live AC outlet. Be sure to turn off the switch and unplug the power

cord before performing any service work.

CAUTION: Electrostatic discharge can damage electronic components of the

workstation. Before beginning these procedures, be sure you are properly

grounded. See “Electrostatic Discharge Information” in Chapter 2 for more

information.

1. Turn off the workstation.

2. Disconnect the power cord from the grounded AC outlet and then from the workstation.

3. Turn off all peripheral devices and disconnect cables from the rear of the workstation.

4. Remove the cable lock in order to access internal components. Refer to the following

section for instructions on how to remove the cable lock.

NOTE: In some of the removal procedures in this chapter, you will be asked to remove the

workstation feet and lay the workstation on its side when servicing some of the internal

components.

NOTE: For more information on preparing the workstation for service, see Chapter 2.

3-3

Compaq Professional Workstation SP700 Maintenance and Service Guide

Cable Lock

The workstation comes standard with a cable lock provision for attaching a padlock and/or cable

lock. If installed, the locks must be removed before accessing internal components.

To remove the lock:

1. Unlock and remove the cable lock and/or the padlock.

2. Remove the security bracket (plate) seated over the cable lock bracket.

3. Unfasten the retaining screw to release the cable lock bracket.

Figure 3-2. Removing the padlock

3-4 Removal and Replacement Procedures

Workstation Feet

NOTE: Not all procedures in this chapter require the removal of the workstation feet. Be sure to

thoroughly read each removal and replacement procedure before attempting to access the

workstation’s internal components.

To remove the workstation feet:

1. Perform the service preparations shown on page 3-2.

2. Remove the screws that secure the feet.

3. Remove the workstation feet.

Figure 3-3. Removing the workstation feet

To replace the feet, reverse the above procedure.

3-5

Compaq Professional Workstation SP700 Maintenance and Service Guide

Side Access Panel

CAUTION: Do not operate the workstation with the side access panel removed.

The panel is an integral part of the cooling system; removing it while the system is

running may adversely affect data integrity.

To remove the side access panel:

1. Perform the service preparations shown on page 3-2.

2. Loosen the four rear panel thumbscrews, then slide the access panel off.

Figure 3-4. Loosening the thumbscrews and removing the side access panel

WARNING: To reduce the risk of personal injury from hot surfaces, allow the

internal system components to cool before touching.

IMPORTANT: When replacing the side access panel, be sure to tighten all four

thumbscrews.

NOTE: The hood label attached to the inside of the side access panel provides system

configurations and the installation of additional components.

To replace the side access panel:

1. Be sure all grounding clips and EMI gaskets (shielding strips) are in place.

2. Slide the side access panel in at an angle on one side, drop it into place, then slide it into

the unit completely.

3. Tighten the rear panel thumbscrews.

3-6 Removal and Replacement Procedures

Front Bezel

The front bezel is mounted to the chassis with release levers that are integrated into the bezel.

To remove the front bezel:

1. Perform the service preparations on page 3-2.

2. Remove the side access panel.

3. Depress the front bezel release latches 1and remove the front bezel 2.

COMPACT

Figure 3-5. Removing the front bezel

To replace the front bezel:

1. Line up the hinges and release latches with the appropriate slots on the front of the

chassis.

2. Press the bezel in to secure the release latches.

3-7

Compaq Professional Workstation SP700 Maintenance and Service Guide

Blank Drive Bezel

To remove the blank drive bezel from the front bezel:

1. Perform the service preparations shown on page 3-2.

2. Remove the following components:

❏ side access panel

❏ front bezel

3. Remove the screws that secure the blank drive bezel, then remove the blank bezel from

the front bezel.

Figure 3-6. Removing the blank bezel

To replace the blank drive bezel, reverse the above procedure.

3-8 Removal and Replacement Procedures

EMI/Cooling Shield

An EMI/cooling shield covers bays 5 and 6 to provide proper cooling and EMI protection. To

remove the EMI/cooling shield:

1. Perform the service preparations on page 3-2.

2. Remove the following components:

❏ side access panel

❏ front bezel

3. Remove the two screws that connect the EMI/cooling shield to the front of the chassis.

4. Remove the EMI/cooling shield from the drive slot.

COMPACT

Figure 3-7. Removing the EMI/cooling shield

IMPORTANT: You will need to replace the shield after the drive is installed in the bay.

To replace the EMI/cooling shield, reverse the above procedure.

3-9

Compaq Professional Workstation SP700 Maintenance and Service Guide

Speaker

To remove the speaker:

1. Perform the service preparations shown on page 3-2, remove the workstation feet, and

place the workstation on its side.

2. Remove the side access panel.

3. Unplug the speaker connector from the system board 1, and remove the cable from the

clip.

4. Remove the four T-15 screws securing the front of the speaker to the chassis 2.

5. Remove the speaker from the workstation by sliding it back, then lifting it up and out of

the chassis 3.

Figure 3-8. Removing the speaker

To replace the speaker, reverse the above procedure.

3-10 Removal and Replacement Procedures

I/O Bracket Assembly (Expansion Board

Assembly)

The I/O bracket assembly contains a backplane board (also called riser card), card guide, and

any expansion boards. To remove the I/O bracket assembly:

1. Perform the service preparations shown on page 3-2, remove the workstation feet, and

place the workstation on its side.

2. Remove the side access panel.

CAUTION: The power supply in the Compaq Professional Workstation SP700

contains an auxiliary power section. Be sure the power switch is off and the unit is

unplugged before removing the I/O bracket assembly in the next step.

3. Grasp the I/O bracket assembly and pull it out of the chassis.

Figure 3-9. Removing the I/O bracket assembly

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