IBM 8123, 8138, 8131, 8137 Reinstall the air baffle, Go to “Completing the installation” on page

Page 32

12.Reinstall the air baffle.

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.

24Hardware Replacement Guide

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Contents Hardware Replacement Guide Types 8122, 8123 Types ThinkCentrePage Hardware Replacement Guide Types 8122, 8123 Types 8131 First Edition April Contents OverviewChapter 1. Locations Chapter 2. Replacing hardwareiv Hardware Replacement Guide Safety information for replacing CRUs Safety information for replacing FRUsOverview Additional information resourcesTools required Handling static-sensitive devicesChapter 1. Locations Locating componentsLocating controls and connectors on the front of the computer 2 Hardware Replacement GuideLocating connectors on the rear of the computer Chapter 1. LocationsIdentifying parts on the system board 4 Hardware Replacement GuideChapter 2. Replacing hardware Removing the computer cover6 Hardware Replacement Guide Pivoting or removing the optional hard disk drive mounting bracket Chapter 2. Replacing hardwareReplacing the power supply Removing and replacing the front bezel2. To access the 12 V power connector, remove the lower drive cage thumb-screw and slide the lower drive cage toward the rear and out of the bay. Place the drive cage out of your way without disconnecting the drive signal cables Note Use only the screws provided with the new power supply 9. Reconnect power supply connectors 1 and 2 to the system board 10. Reinstall the lower drive cage and secure it with the thumb-screw11. Reconnect a power supply connector to each of the drives 12. Go to “Completing the installation” on pageReplacing the system board assembly 9. Remove screws 1 through 7 14 Hardware Replacement Guide 15. Using the vacuum pen1, remove the microprocessor from the system board socket by lifting it straight up and out of the socket 16 Hardware Replacement Guide 19. Pivot the microprocessor retainer 3 to the closed position and rotate the locking lever 2 to secure the microprocessor 1. Make sure the locking lever is engaged with the retainer tab when securing the microprocessor 22. Align the seven screw holes, and install the screws Replacing the microprocessor 20 Hardware Replacement Guide Chapter 2. Replacing hardware 22 Hardware Replacement Guide Chapter 2. Replacing hardware 24 Hardware Replacement Guide 12. Reinstall the air baffle13. Go to “Completing the installation” on page Replacing a memory module Replacing an adapter 26 Hardware Replacement GuideReplacing the hard disk drive Replacing an optical drive 28 Hardware Replacement Guide7. Reconnect the signal and power cables to the drive 30 Hardware Replacement Guide Replacing the diskette driveReplacing the keyboard Replacing the mouse Replacing the internal speaker32 Hardware Replacement Guide Completing the installation Updating flashing BIOS from a diskette or CD-ROM Page Part Number 39J7784 Printed in USA 1P P/N 39J7784