Lenovo ThinkCentre A55 8705 Hardware Manual

Hardware Manual for Lenovo ThinkCentre A55 8705 Desktop (44 pages)

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639/639507-thinkcentre_a55_8705.pdf file (28 Nov 2023)
  • Manufacturer: Lenovo
  • Category of Device: Desktop
  • Document: ThinkCentre A55 8705, File Type: PDF Hardware Manual
  • Updated: 28-11-2023
  • Count of Pages: 44
Download ThinkCentre A55 8705 Manual (44 pages)

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Data: UPD 28th November 2023

Lenovo ThinkCentre A55 8705 Desktop PDF Hardware Manual (Updated: Tuesday 28th of November 2023 04:49:05 AM)

Rating: 4.3 (rated by 5 users)

Compatible devices: THINKCENTRE M810z 10NX, 2529E8U, M800 Series, ThinkPad X1, 2121, ThinkCentre M60e, S50 Series, S400Z.

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Text Version of Lenovo ThinkCentre A55 8705 Hardware Manual (Summary of Contents)

(Ocr-Read of the Lenovo ThinkCentre A55 8705 Document (Main Content), UPD: 28 November 2023)
  • 1, Lenovo ThinkCentre A55 8705 Hard ware Replacement Gui de Ty pe s 9300, 9301, 9636, 9638, 9640 Ty pe s 96 41, 9642, 9643, 9644, 96 45 …

  • 3, Hard ware Replacement Gui de Ty pe s 9300, 9301, 9636, 9638, 9640 Ty pe s 96 41, 9642, 9643, 9644, 96 45 …

  • 4, Third Edition (April 2007) © Copyright Lenovo 2005, 2007. Portions © Copyright International Business Machines Corporation 2005. All rights reserved. U.S. GOVERNMENT USERS – RESTRICTED RIGHTS: Our products and/or services are provided with RESTRICTED RIGHTS. Use, …

  • 5, Contents Overview . . . . . . . . . . . . . .v Safety information . . . . . . . . . . . .v Additional information resources . . . . . . .v Tools required . . . . . . . . . . . . .vi Handling static-sensitive devices . . . . . . .vi Chapter 1. Lo…

  • 7, Overview This guide is intended to be used by customers who are replacing Customer Replaceable Units (CRUs) as well as trained service personnel who are replacing Field Replacement Units (FRUs). In this guide, CRUs will often be referred to as parts. This guide d…

  • 8, v Support phone list To access this information, point your browser to: http://www.lenovo.com/support Tools required To replace some parts in your computer, you might need a flat-blade or Phillips screwdriver. Additional tools might be needed for certain parts. Handling stati…

  • 9, Lenovo ThinkCentre A55 8705 Chapter 1. Locations This chapter provides illustrations to help locate the various connectors, controls, and components of the computer. To open the computer cover, see “Opening the cover” on page 5. Locating components The following illustration will help you locate…

  • 10, Locating controls and connectors on the front of your computer The following illustration shows locations of the controls and connectors on the front of your computer. Note: Not all computer models will have the following controls and connections. 1 Optical…

  • 11, Lenovo ThinkCentre A55 8705 Locating connectors on the rear of your computer The following illustration shows locations of connectors on the rear of your computer. 1 Power cord connector 9 Parallel connector 2 Cable lock latch 10 Serial connector 3 PCI Expre…

  • 12, Identifying parts on the system board The following illustration shows the locations of parts on the system board. 1 Memory connector 1 10 Internal speaker connector 2 Memory connector 2 11 Diskette drive connector 3 SATA IDE connectors (2)…

  • 13, Lenovo ThinkCentre A55 8705 Chapter 2. Replacing hardware Attention Do not open your computer or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain a copy of the Safety and Warranty Guide, g…

  • 14, Lenovo ThinkCentre A55 8705 Replacing the power supply assembly Attention Do not open your computer or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain a copy of the Safety and Warranty Guide, go …

  • 15, Lenovo ThinkCentre A55 8705 5. Disconnect the power supply cables 1and 2 from the system board connectors and from all drives. 6. Remove the power supply cables from the cable clips and ties. 7. Slide the power supply assembly forward and remove it from the computer. …

  • 16, Lenovo ThinkCentre A55 8705 Replacing the system board Attention Do not open your computer or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain a copy of the Safety and Warranty Guid…

  • 17, 4. While holding the rear of the computer chassis down, pull upward on the handle provided to remove the PCI riser assembly and any adapters that are currently installed. 5. Carefully take note of the location of all cable connections on the system …

  • 18, 7. Pull upward on the handle 1to release the system board from the front latch, slide the system board toward the drive bay assembly, and then carefully lift the system board out of the chassis. Note: You might have to tilt the front end of the system board…

  • 19, 10. Remove the heat sink from the failing system board by pivoting the lever 1securing the heat sink until it is fully in the up position. Carefully lift the heat sink off of the failing system board. Note: Place the heat sink on its side on a clean, fl…

  • 20, Lenovo ThinkCentre A55 8705 12. Lift the microprocessor straight up and out of the socket. Important Do not touch the gold contacts on the bottom of the microprocessor. When handling the microprocessor, touch only the sides. a. Note the orientation of the notches 1 on the microprocess…

  • 21, 15. Lower the microprocessor straight down into the microprocessor socket. 16. Lower the microprocessor retainer 2 and then lower the lever 1 to secure the retainer. Make sure the lever is securely locked into position. Note: There will be a black …

  • 22, 19. Slide the system board toward the rear of the computer until the front latch snaps into position. 20. Reconnect the cables that were disconnected from the system board. Make sure all cables are routed correctly. See “Identifying parts on the system board” …

  • 23, 2. Pivot the drive bay assembly upward to gain access to the heat sink. 3. Remove the heat sink from the system board by pivoting the lever 1 securing the heat sink until it is fully in the up position. Carefully lift the heat sink off of the system b…

  • 24, This section provides instructions on how to replace the hard disk drive. Important When you receive a new hard disk drive, you also receive a set of Product Recovery CDs. The set of Product Recovery CDs will enable you to restore the contents of the hard…

  • 25, 5. Pivot the hard disk drive and bracket to the rear, then pull the drive and bracket out of the drive bay by pulling on the blue handle. 6. Remove the failing hard disk drive from the bracket by flexing the bracket. Chapter 2. Replacing hardw…

  • 26, 7. Install the new drive into the blue bracket, flex the bracket, and align the pins 1 through 4on the bracket with the holes in the hard disk drive. Do not touch the circuit board 5 on the bottom of the hard disk drive. 8. Install…

  • 27, 2. Pivot the drive bay assembly upward to gain access to the optical drive. 3. Disconnect the signal and power cables from the rear of the optical drive. 4. Slide the optical drive lock 1 to the unlocked position. 5. Open the door at the front of …

  • 28, Lenovo ThinkCentre A55 8705 Replacing the diskette drive Attention Do not open your computer or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain a copy of the Safety and Warranty Guide, go to …

  • 29, Lenovo ThinkCentre A55 8705 3. Slide the diskette drive lock 1to the unlocked position. 4. Slide the diskette drive towards the rear of the computer and remove the drive. 5. Disconnect the flat cable from the rear of the failing diskette drive. 6. Connect the flat cab…

  • 30, 2. While holding the rear of the computer chassis down, pull upward on the handle provided to remove the PCI riser assembly and any adapters that are currently installed. 3. Pivot the drive bay assembly upward to gain access to the system board. 4. Lo…

  • 31, Lenovo ThinkCentre A55 8705 5. Remove the memory module being replaced by opening the retaining clips as shown. 6. Position the replacement memory module over the memory connector. Make sure the notch 1on the memory module aligns correctly with the connector key 2 on the system …

  • 32, 2. While holding the left rear of the computer chassis down, pull upward on the handle provided to remove the PCI riser assembly including any adapters that are already installed. 3. Open the adapter latch and remove the failing adapter. 4. Remove the new a…

  • 33, Lenovo ThinkCentre A55 8705 7. Close the adapter latch to retain the adapter. 8. Reinstall the PCI riser assembly into the system board. 9. Go to “Completing the parts replacement” on page 30. Replacing the fan assembly Attention Do not open your computer or attempt any repair be…

  • 34, Note: Make sure you note the location of the fan cables when you disconnect the cables from the system board. 4. Remove the front bezel by releasing the tab as shown and pivoting the bezel outward from the bottom. 5. Remove the plastic fan insert behind th…

  • 35, Lenovo ThinkCentre A55 8705 6. Remove the fan assembly by releasing the tabs as shown. 7. Install the new fan assembly and connect the fan cables to the system board. 8. Reinstall the plastic fan insert. 9. Reinstall the front bezel. 10. Go to “Completing the pa…

  • 36, Lenovo ThinkCentre A55 8705 2. Pivot the drive bay assembly upward to gain access to the system board. 3. Locate the internal speaker connector on the system board. See “Locating components” on page 1. 4. Disconnect the internal speaker cable from the system board. See “Identifying …

  • 37, 6. Position the bottom of the new internal speaker into the metal tabs and then pivot the top of the internal speaker inward until the speaker snaps into position. 7. Connect the speaker cable to the system board. See “Identifying parts on the system …

  • 38, This section provides instructions on how to replace a mouse. 1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down your operating system, and turn off all attached devices and the computer. 2. Unplug all power cords from electrical outlets. 3. Loc…

  • 39, Lenovo ThinkCentre A55 8705 2. Make sure that the cables are routed correctly before lowering the drive bay assembly. Important Correctly route all power supply cables to avoid interference with the drive bay assembly. Keep cables clear of the hinges and sides of the computer chassis. 3. …

  • 40, To update (flash) the BIOS from a diskette or CD-ROM, do the following: 1. Insert a system program update (flash) diskette or CD into the diskette drive or optical drive. System program updates are available at http://www.lenovo.com/support on the World Wide We…

  • 41, Appendix. Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product,…

  • 42, vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual res…

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