Instruction/ maintenance manual of the product 8123 IBM
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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 .
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.
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.
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 .
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.
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 connect.
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.
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 .
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.
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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 .
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.
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.
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 .
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.
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.
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.
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.
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.
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 .
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 .
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 .
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.
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.
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 .
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.
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.
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.
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.
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Part Number: 39J7784 Printed in USA (1P) P/N: 39J7784.
An important point after buying a device IBM 8123 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought IBM 8123 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data IBM 8123 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, IBM 8123 you will learn all the available features of the product, as well as information on its operation. The information that you get IBM 8123 will certainly help you make a decision on the purchase.
If you already are a holder of IBM 8123, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime IBM 8123.
However, one of the most important roles played by the user manual is to help in solving problems with IBM 8123. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device IBM 8123 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
