Table Of Contents - Lenovo ThinkCentre A55 Hardware Maintenance Manual

Contents
Chapter 1. About this manual . . . . . 1
Important Safety Information .
Important information about replacing RoHS
compliant FRUs . . .
Chapter 2. Safety information . . . . . 3
General safety . . . .
Electrical safety . . .
Safety inspection guide .
Handling electrostatic discharge-sensitive devices .
Grounding requirements .
Safety notices (multi-lingual translations) .
Chapter 3. General information . . . . 37
The ThinkVantage Productivity Center program .
Additional information resources .
Specifications . . . .
Chapter 4. General Checkout . . . . . 39
Problem determination tips .
Chapter 5. Diagnostics . . . . . . . . 41
PC-Doctor for Windows .
PC-Doctor for DOS . .
Creating a diagnostic CD image
Creating diagnostic diskettes
Running diagnostics from the CD or diskettes .
Running diagnostics from the Rescue and
Recovery workspace .
PC-Doctor for Windows PE .
Running diagnostics from the Rescue and
Recovery workspace .
Navigating through the diagnostics programs .
Running tests . . . .
Test results . . .
Fixed disk advanced test (FDAT) .
Quick and Full erase - hard drive .
Viewing the test log .
Chapter 6. Using the Setup Utility . . . 49
Starting the Setup Utility program .
Viewing and changing settings .
Using passwords . .
Password considerations .
User Password . .
Administrator Password .
Setting, changing, and deleting a password .
Using Security Profile by Device .
Selecting a startup device .
Selecting a temporary startup device .
Changing the startup device sequence
Advanced settings . .
Exiting from the Setup Utility program .
© Copyright Lenovo 2006
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Chapter 7. Symptom-to-FRU Index . . . 53
. 1 Hard disk drive boot error .
Power Supply Problems .
. 2 Diagnostic error codes .
Beep symptoms .
POST error codes .
Miscellaneous error messages .
. 3
Undetermined problems .
. 3
. 5
Chapter 8. Replacing FRUs . . . . . . 81
. 6
. 6 Locating connectors on the rear of your computer
. 7 Opening the cover .
Locating FRUs .
Identifying parts on the system board
Replacing a memory module
. 37
Replacing the power supply assembly
. 37
Replacing the system board .
. 38
Replacing the microprocessor .
Replacing a hard disk drive
Replacing an optical drive .
. 39
Replacing the diskette drive
Replacing a PCI adapter .
Replacing the fan assembly .
. 41
Replacing the internal speaker .
. 41
Replacing the power button and LED assembly .
. 42
Completing the FRU replacement .
. 42
Updating (flashing) BIOS from a diskette or
. 42
CD-ROM . . .
. 43
Chapter 9. FRU lists . . . . . . . . 117
. 43
Machine Type 9300
Machine Type 9301
. 43
Machine Type 9636
. 44
Machine Type 9638
. 44
Machine Type 9640
. 44
Machine Type 9641
. 45
Machine Type 9642
. 46
Machine Type 9643
. 47
Machine Type 9644
Machine Type 9645
. 49
Chapter 10. Additional Service
. 49
Information . . . . . . . . . . . . 197
. 49
Security features .
. 49
Hardware controlled Passwords .
. 50
Operating system password
. 50
Vital product data .
. 50
BIOS levels . .
. 50
Flash update procedures .
. 51
Updating (flashing) BIOS from a diskette .
. 51
Recovering from a POST/BIOS update failure
. 51
Power management .
. 52
Automatic configuration and power interface
. 52
(ACPI) BIOS .
Automatic Power-On features .
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