Table Of Contents - Lenovo ThinkCentre A70 7099 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 . . .
Voltage-selection switch.
Safety inspection guide .
Handling electrostatic discharge-sensitive devices .
Grounding requirements .
Safety notices (multi-lingual translations) .
Chapter 3. General information . . . . 39
Lenovo ThinkVantage Tools .
ThinkVantage Productivity Center .
Lenovo Welcome . .
Additional information resources .
Specifications . . . .
For machine types: 0864, 7099, and 7846.
For machine types: 0889, 5023, and 7844.
Chapter 4. General checkout . . . . . 43
Problem determination tips .
Chapter 5. Diagnostic programs . . . . 45
Lenovo ThinkVantage Toolbox .
PC-Doctor for Rescue and Recovery .
PC-Doctor for DOS . .
Creating a diagnostic disc
Running the diagnostic program from the
diagnostic disc . .
Navigating through the diagnostic programs .
Running tests. . .
Viewing the test log
Chapter 6. Using the Setup Utility . . . 49
Starting the Setup Utility program .
Viewing or changing settings
Using passwords . .
Password considerations .
Power-on password
Administrator password .
Setting, changing, or deleting a password .
Enabling or disabling a device .
Selecting a startup device.
Selecting a temporary startup device .
Viewing or changing the startup device sequence 52
Exiting the Setup Utility program .
Chapter 7. Symptom-to-FRU index . . . 53
Hard disk drive boot error .
Power Supply Problems .
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Diagnostic error codes .
Beep symptoms .
. 1
POST error codes .
Miscellaneous error messages .
. 2
Undetermined problems .
Chapter 8. Replacing FRUs (Machine
. 3
Types: 0864, 7099, and 7846.) . . . . . 83
. 3
. 5 Locating connectors, controls, and indicators on the
. 5 front of your computer
. 6 Locating connectors and parts on the rear of your
. 7 computer . .
. 7 Locating components .
Locating parts on the system board .
Locating internal drives .
Removing the computer cover .
. 39
Removing and reinstalling the front bezel .
. 39
Installing or replacing a PCI card .
. 39
Installing or replacing a memory module .
. 40
Replacing the battery .
. 41
Replacing the power supply assembly
. 41
Replacing the heat sink and fan assembly .
. 42
Replacing the microprocessor .
Replacing the optical drive .
Replacing the hard disk drive .
. 43
Replacing the card reader .
Replacing the front audio and USB assembly .
Replacing the system board.
. 45
Completing the parts replacement
. 45
. 46
Chapter 9. Replacing FRUs (Machine
. 46
Types: 0889, 5023, and 7844.) . . . . 117
Locating connectors, controls, and indicators on the
. 46
front of your computer .
. 46
Locating connectors and parts on the rear of your
. 47
computer . . .
. 48
Locating components .
Locating parts on the system board .
Locating internal drives .
. 49
Removing the computer cover.
. 49
Removing and reinstalling the front bezel .
. 49
Accessing the system board components and
. 50
drives . . . .
. 50
Installing or replacing a PCI card .
. 50
Installing or replacing a memory module .
. 50
Replacing the battery .
. 51
Replacing the heat sink and fan assembly .
. 51
Replacing the microprocessor .
. 51
Replacing the power supply assembly .
Replacing the optical drive .
. 52
Replacing the system board
Replacing the hard disk drive .
Replacing the card reader .
. 53
Replacing the front audio and USB assembly .
. 53
Replacing the front fan assembly .
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