IBM 8124 manual

ThinkC e n tr e ™ Hard w are Rep l a c ement Gu i d e Ty p e s 81 2 2 , 81 2 3 , 81 2 4 Ty p e s 81 31 , 81 3 7 , 81 3 8 [...]

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ThinkC e n tr e ™ Hard w are Rep l ac ement Gu i d e Ty p e s 81 2 2 , 81 2 3 , 81 2 4 Ty p e s 81 31 , 81 3 7 , 81 3 8 [...]

First Edition (April 2005) © Copyright International Business Machines Corporation 2005. All rights reserved. US Government Users Restricted Rights – Use, duplication or disclosure r estricted by GSA ADP Schedule Contract with IBM Corp.[...]

Contents Overview . . . . . . . . . . . . . .v Safety information for replacing CRUs . . . . . .v Safety information for replacing FRUs . . . . . .v Additional information resour ces . . . . . . .v T ools requir ed . . . . . . . . . . . . .v i Handling static-sensitive devices . . . . . . .v i Chapter 1. Locations . . . . . . . . .1 Locating compon[...]

iv Hardwar e Replacement Guide[...]

Overview This guide is intended to be used by customers who are r eplacing Customer Replaceable Units (CRUs) as well as trained service personnel who are r eplacing Field Replaceable Units (FRUs). In this guide CRUs and FRUs will often be referr ed to as parts. This guide does not include procedur es for all parts. It is expected that cables, switc[...]

T ools required To replace some parts in your computer , you will need a flat-blade or Phillips screwdriver . Additional tools might be needed for certain parts. Handling static-sensitive devices Static electricity , although harmless to you, can seriously damage computer components. When you are r eplacing a part, do not open the static-protective[...]

Chapter 1. Locations This chapter provides illustrations to help locate the various connectors, contr ols and components of the computer . To remove the computer cover , see “Removing the computer cover” on page 5. Locating components The following illustration will help you locate the various components in your computer . 1 Optical drive[...]

Locating controls and connectors on the front of the computer This section shows the various external connectors on the computer to which you can attach external devices. 1 3 9 4 1 IEEE 1394 connector (some models) 4 Microphone connector 2 USB connector 5 Headphone connector 3 USB connector 2 Hardwar e Replacement Guid[...]

Locating connectors on the rear of the computer The following illustration shows the location of connectors on the rear of the computer . 1 Power supply diagnostic LEDs 11 Ethernet connector 2 V oltage selection switch 12 USB connectors (2) 3 Power connector 13 Standard keyboar d connector 4 Audio line in c[...]

Identifying parts on the system board The system board (sometimes called the planar or motherboard ) is the main cir cuit board in your computer . It pr ovides basic computer functions and supports a variety of devices. The following illustration shows the locations of parts on the system board. 1 Internal speaker connector 12 PCI adapt[...]

Chapter 2. Replacing hardware Attention: Do not remove the computer cover or attempt any r epair before reading the “Important safety information” in the Quick Reference that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer . To obtain copies of the Quick Reference or HMM , go to http://www .ibm.com/p[...]

6. Some models have an optional hard disk drive mounting bracket 1 installed. When this bracket is installed, access to some of the CRUs or FRUs inside the chassis is restricted. Note: There appears to be two drive bays in the bracket. However , due to thermal restrictions, only the bay 2 at the r ear of the chassis can be used to insta[...]

Pivoting or removing the optional hard disk drive mounting bracket The optional hard disk drive mounting bracket can easily be pivoted upwar d or removed if necessary to enable r eplacement of some CRUs and FRUs. To pivot the optional hard disk drive bracket upwar d, pull outward at the bottom of the bracket. Note: Yo u might have to disconnect the[...]

Removing and replacing the front bezel 1. Remove the computer cover . See “Removing the computer cover” on page 5. 2. To release the front bezel fr om the chassis, press downwar d on the two plastic tabs 1 and push the bezel outward as shown. 3. To reinstall the bezel, align the plastic tabs 1 on the bottom of the bezel with the cor[...]

2. To access the 12 V power connector , r emove the lower drive cage thumb-screw and slide the lower drive cage towar d the rear and out of the bay . Place the drive cage out of your way without disconnecting the drive signal cables. 3. Disconnect the power supply cables 1 and 2 from the system board. 4. Disconnect the power cable from [...]

5. Remove the four screws that secure the power supply at the r ear of the chassis. 6. Press inward on the metal r etainer inside the chassis and slide the power supply toward the fr ont of the chassis and lift it out of the chassis as shown. 7. Install the new power supply into the chassis so that the screw holes in the power supply align with tho[...]

9. Reconnect power supply connectors 1 and 2 to the system board. 10. Reinstall the lower drive cage and secure it with the thumb-screw . 11 . Reconnect a power supply connector to each of the drives. 12. Go to “Completing the installation” on page 33. Chapter 2. Replacing hardwar e 11[...]

Replacing the system board assembly Attention: Do not remove the computer cover or attempt any r epair before reading the “Important safety information” in the Quick Reference that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer . To obtain copies of the Quick Reference or HMM , go to http://www .ibm[...]

6. Remove the lower drive cage by removing the thumb-screw and sliding the lower drive cage toward the r ear of the computer . 7. Disconnect the cables attached to the drives in the lower drive cage and set the drive cage to the side. 8. Disconnect all cables connected to the system board. See “Identifying parts on the system board” on page 4. [...]

13. Release and pivot lever 1 upward. Remove the heat sink 2 from the system board by car efully lifting it up and off the mounting bracket. Place the heat sink on its side on a clean, flat surface so the thermal material on the bottom of the heat sink does not touch the surface and become contaminated. 14. Release and pivot locking lev[...]

15. Using the vacuum pen 1 , remove the micropr ocessor from the system boar d socket by lifting it straight up and out of the socket. Important Do not touch the gold contacts on the bottom of the micropr ocessor . If you must touch the micropr ocessor , touch only the sides. Notes: a. Notice of the orientation of the notches 1 on the m[...]

16. On the new system board, release and pivot the locking lever , then pivot the micropr ocessor retainer until it is open. Note: There will be a black pr otective cover on the retainer to pr otect the micropr ocessor socket. As you close the micropr ocessor retainer , remove the cover . Place the black protective cover on the micr oprocessor reta[...]

19. Pivot the microprocessor r etainer 3 to the closed position and rotate the locking lever 2 to secure the micr oprocessor 1 . Make sur e the locking lever is engaged with the retainer tab when securing the micr oprocessor . 20. Align the beveled corners of the heat sink and the mounting bracket. Then position the heat sink 2[...]

21. Install the new system board assembly into the computer chassis by aligning the four slots in the metal plate on the bottom of the system board with the tabs in the chassis. Then slide the system board towar d the rear of the chassis. Important Make sure to corr ectly align the metal plate on the bottom of the system board with the tabs in the [...]

Replacing the microprocessor Attention: Do not remove the computer cover or attempt any r epair before reading the “Important safety information” in the Quick Reference that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer . To obtain copies of the Quick Reference or HMM , go to http://www .ibm.com/pc[...]

2. Remove the air baffle by squeezing the tabs 1 together and pulling it out of the chassis. 3. Release and pivot lever 1 upward. Remove the heat sink 2 from the system board by car efully lifting it up and off the mounting bracket. 20 Hardwar e Replacement Guide[...]

4. Release and pivot locking lever 2 securing the microprocessor 1 , then pivot the micropr ocessor retainer 3 until it is open. 5. Using the vacuum pen 1 , remove the micropr ocessor from the system boar d socket by lifting it straight up and out of the socket. Important Do not touch the gold contacts on the bottom of the m[...]

Notes: a. Notice of the orientation of the notches 1 on the microprocessor . This is important when reinstalling the micr oprocessor on the system boar d. b. Do not drop anything onto the micropr ocessor socket while it is exposed. The socket pins must be kept as clean as possible. 6. Make sure that the micropr ocessor retainer is fully open.[...]

Important To avoid damaging the micropr ocessor contacts, do not tilt the micropr ocessor when installing it into the socket. 9. Using the vacuum pen 1 , lower the microprocessor straight down into the micropr ocessor socket. Note: Install the black protective cover that was r emoved from the new micropr ocessor onto the defective micropr oce[...]

11 . Align the beveled corners of the new heat sink and the mounting bracket. Then position the heat sink 2 on the heat sink mounting bracket. Lower the lever 1 to secure the heat sink. 12. Reinstall the air baffle. 13. Go to “Completing the installation” on page 33. 24 Hardwar e Replacement Guide[...]

Replacing a memory module Attention: Do not remove the computer cover or attempt any r epair before reading the “Important safety information” in the Quick Reference that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer . To obtain copies of the Quick Reference or HMM , go to http://www .ibm.com/pc/su[...]

Replacing an adapter Attention: Do not remove the computer cover or attempt any r epair before reading the “Important safety information” in the Quick Reference that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer . To obtain copies of the Quick Reference or HMM , go to http://www .ibm.com/pc/support[...]

Replacing the hard disk drive Attention: Do not remove the computer cover or attempt any r epair before reading the “Important safety information” in the Quick Reference that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer . To obtain copies of the Quick Reference or HMM , go to http://www .ibm.com/p[...]

6. To install the new hard disk drive into the blue bracket, flex the bracket and align the pins 1 through 4 on the bracket with the holes in the har d disk drive. Do not touch the circuit boar d 5 on the bottom of the hard disk drive. 7. Insert the new hard disk drive into the lower drive cage with its circuit boar d side facing [...]

3. Disconnect the signal and power cables from the rear of the optical drive. 4. Release the optical disk drive by pressing on the blue retainer lever at the side of the drive and removing it fr om the front of the computer . 5. Remove the retainer bracket from the failing drive and install it on the new drive. 6. Slide the new optical drive into t[...]

Replacing the diskette drive Attention: Do not remove the computer cover or attempt any r epair before reading the “Important safety information” in the Quick Reference that was included with your computer or in the Hardware Maintenance Manual (HMM) for the computer . To obtain copies of the Quick Reference or HMM , go to http://www .ibm.com/pc[...]

1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down the computer , and turn off all attached devices. 2. Unplug all power cords from electrical outlets. 3. Locate the connector for the keyboard. See “Locating connectors on the rear of the computer” on page 3 and “Locating controls and connectors on the fr ont of the comp[...]

1. Remove the computer cover . See “Removing the computer cover” on page 5. Note: For this procedur e, it helps to lay the computer on its side. 2. Remove the air baffle by squeezing the two tabs 1 together and pulling it out of the chassis. 3. Locate the internal speaker connector , see “Identifying parts on the system board” on page[...]

Completing the installation After replacing a failed part, you need to install any other r emoved parts, install the computer cover , and reconnect any cables, including telephone lines and power cords. Also, depending on the part that was r eplaced, you might need to confirm the updated information in the Setup Utility program. See ″ Starting th[...]

5. Reconnect the external cables. Plug the power cord into the computer then into a properly gr ounded power receptacle. See “Locating contr ols and connectors on the front of the computer” on page 2 and “Locating connectors on the r ear of the computer” on page 3. 6. If you are replacing the system boar d you must update (flash) the BIOS. [...]

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 Part Number: 39J7784 Printed in USA (1P) P/N: 39J7784[...]