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™
ThinkCentre
Hardware Removal and Replacement
Guide
Types 8424, 8425, 8428
Types 8171, 8172, 8173
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™ ThinkCentre Hardware Removal and Replacement Guide Types 8424, 8425, 8428 Types 8171, 8172, 8173
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Second Edition (June 2004) © Copyright International Business Machines Corporation 2004. All rights reserved. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSAADP Schedule Contract with IBM Corp.
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Contents Locating components . . . . . . . . . . .2 Overview . . . . . . . . . . . . . .v Identifying parts on the system board . . . . . .3 Safety information . . . . . . . . . . . .v Removing and replacing the power supply . . . .3 Additional information resources . . . . . . .v Remo
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iv Hardware Removal and Replacement Guide
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Overview This guide contains instructions for replacing the following customer replacement units (CRUs): v Power supply v System board v Microprocessor v Hard disk drive v Memory modules Safety information Do not o
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v Before you replace a new CRU, touch the static-protective package containing the CRU to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two seconds. This reduces static electricity in the package and your body. v When possible, remove the new CRU from the static-protective packaging, and install it directly in the computer without setti
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Replacing customer replaceable units (CRUs) Attention Do not open your computer or attempt any repair before reading the “Safety notices” in the Quick Reference that was included with your computer. If you no longer have this copy of the Quick Reference, you can obtain one online from the IBM Web site at
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Locating components The following illustration will help you locate the various components in your computer. 1 Diskette drive lock 5 Power supply assembly 2 Memory modules 6 CD or DVD drive (hard disk drive is under the CD drive) 3 Battery 7 CD or DVD drive lock 4 PCI riser 2 Hardware Removal and Replacement Guide
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Identifying parts on the system board The system board (sometimes called the planar or motherboard) is the main circuit board in your computer. It provides basic computer functions and supports a variety of devices. The following illustration shows the locations of parts on the system board. 1
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2. Pivot the drive bay assembly upward to gain access to the cable connections. 3. Locate the power supply. See “Locating components” on page 2. Note: Note the routing of the power supply cables. It is important to route the cables the same way when installing a new power supply assembly. 4. Disconnect the power cables from the hard disk drive and the CD-ROM drive. 5
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7. Remove the screws at the rear of the chassis that secure the power supply. 8. Slide the power supply forward and remove from the computer. Replacing customer replaceable units (CRUs) 5
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9. Install the new power supply into the chassis so that the screw holes in the power supply align with those in the chassis. Note: Use only the screws provided by IBM. 10. Install and tighten the four screws at the rear of the chassis that secure the power supply. 11. Reconnect the speaker wire to the system board. 12. Reconne
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Removing and replacing the system board assembly Attention Do not open your computer or attempt any repair before reading the “Safety notices” in the Quick Reference that was included with your computer. If you no longer have this copy of the Quick Reference, you can obtain one online from the IBM Web site at http://www.ibm.com/pc/support.
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installed. 5. Carefully note the location of all cable connections on the system board. It will be necessary to reconnect them properly after installing the new system board assembly. Note: Note the cable routing. It is important to route the cables the same way when installing a new system board. 6. Disconnect the diskette drive cable from the sy
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10. Using the two blue handles provided, lift the system board assembly out of the computer. 11. Place the old system board next to the new system board on a clean, flat surface. 12. Remove the microprocessor
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Removing and replacing the microprocessor Attention Do not open your computer or attempt any repair before reading the “Safety notices” in the Quick Reference that was included with your computer. If you no longer have this copy of the Quick Reference, you can
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4. Release the lever 1holding the microprocessor heat sink. 5. Remove the heat sink, and do one of the following: v If you are replacing the microprocessor, place the old heat sink aside. You must use the new heat sink shipped with the new microprocessor. Note Do not use the old heat sink with the a new microprocessor. If you use the ol
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Notes: a. Notice of the orientation of the notches 1 on the microprocessor . This is important when reinstalling the microprocessor on the system board. b. Do not drop anything on the socket while it is open. Keep all contacts as clean as possible. 7. To install the microprocessor, do one of the following: Attention To avoid damaging the microprocessor
