Lenovo ThinkCentre A70 Hardware Maintenance Manual for ThinkCentre A70 - Page 5

Contents, Using the Setup Utility.. - 7844

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Contents Chapter 1. About this manual 1 Important safety information 1 Important information about replacing RoHS compliant FRUs 1 Chapter 2. Safety information 3 General safety 3 Electrical safety 3 Voltage-selection switch 5 Safety inspection guide 5 Handling electrostatic discharge-sensitive devices 6 Grounding requirements 6 Safety notices (multi-lingual translations) . . . . . 6 Chapter 3. General information . . . . 29 Lenovo ThinkVantage Tools 29 ThinkVantage Productivity Center 29 Lenovo Welcome 29 Lenovo Solution Center 30 SimpleTap 30 Additional information resources 30 Specifications 30 For machine types: 0864, 7099, and 7846. . . 30 For machine types: 0889, 5023, and 7844. . . 31 Chapter 4. General checkout . . . . . 33 Problem determination tips 33 Chapter 5. Diagnostic programs . . . 35 Lenovo ThinkVantage Toolbox 35 Lenovo Solution Center 35 PC-Doctor for Rescue and Recovery 36 PC-Doctor for DOS 36 Creating a diagnostic disc 36 Running the diagnostic program from the diagnostic disc 36 Navigating through the diagnostic programs . 37 Running tests 37 Viewing the test log 38 Chapter 6. Using the Setup Utility. . . 39 Starting the Setup Utility program 39 Viewing or changing settings 39 Using passwords 39 Password considerations 40 Power-on password 40 Administrator password 40 © Copyright Lenovo 2010, 2012 Setting, changing, or deleting a password . . 40 Enabling or disabling a device 40 Selecting a startup device 41 Selecting a temporary startup device . . . . 41 Viewing or changing the startup device sequence 41 Exiting the Setup Utility program 42 Chapter 7. Symptom-to-FRU index . . 43 Hard disk drive boot error 43 Power Supply Problems 43 Diagnostic error codes 43 Beep symptoms 61 POST error codes 62 Miscellaneous error messages 63 Undetermined problems 65 Chapter 8. Replacing FRUs (Machine Types: 0864, 7099, and 7846.). . . . . 67 Locating connectors, controls, and indicators on the front of your computer 67 Locating connectors and parts on the rear of your computer 68 Locating components 68 Locating parts on the system board 69 Locating internal drives 70 Removing the computer cover 71 Removing and reinstalling the front bezel . . . . 72 Installing or replacing a PCI card 74 Installing or replacing a memory module . . . . 76 Replacing the battery 78 Replacing the power supply assembly . . . . . 79 Replacing the heat sink and fan assembly . . . . 81 Replacing the microprocessor 83 Replacing the optical drive 86 Replacing the hard disk drive 87 Replacing the card reader 89 Replacing the front audio and USB assembly . . 90 Replacing the system board 91 Completing the parts replacement 94 Chapter 9. Replacing FRUs (Machine Types: 0889, 5023, and 7844.). . . . . 97 Locating connectors, controls, and indicators on the front of your computer 97 Locating connectors and parts on the rear of your computer 98 Locating components 98 iii

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Contents
Chapter 1. About this manual
......
1
Important safety information
.
.
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.
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1
Important information about replacing RoHS
compliant FRUs
.
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1
Chapter 2. Safety information
......
3
General safety
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3
Electrical safety
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3
Voltage-selection switch
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5
Safety inspection guide
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5
Handling electrostatic discharge-sensitive
devices
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.
6
Grounding requirements
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6
Safety notices (multi-lingual translations)
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6
Chapter 3. General information
....
29
Lenovo ThinkVantage Tools
.
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29
ThinkVantage Productivity Center
.
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.
29
Lenovo Welcome
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29
Lenovo Solution Center
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30
SimpleTap
.
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30
Additional information resources
.
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30
Specifications
.
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.
.
.
.
.
.
.
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.
.
30
For machine types: 0864, 7099, and 7846. .
.
30
For machine types: 0889, 5023, and 7844. .
.
31
Chapter 4. General checkout
.....
33
Problem determination tips
.
.
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.
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.
.
33
Chapter 5. Diagnostic programs . . .
35
Lenovo ThinkVantage Toolbox
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35
Lenovo Solution Center
.
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35
PC-Doctor for Rescue and Recovery
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36
PC-Doctor for DOS
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36
Creating a diagnostic disc
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36
Running the diagnostic program from the
diagnostic disc
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36
Navigating through the diagnostic programs
.
37
Running tests
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37
Viewing the test log
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38
Chapter 6. Using the Setup Utility. . .
39
Starting the Setup Utility program
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.
39
Viewing or changing settings
.
.
.
.
.
.
.
.
.
39
Using passwords
.
.
.
.
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.
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.
39
Password considerations
.
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40
Power-on password
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40
Administrator password
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40
Setting, changing, or deleting a password .
.
40
Enabling or disabling a device
.
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.
.
.
.
.
.
40
Selecting a startup device
.
.
.
.
.
.
.
.
.
.
41
Selecting a temporary startup device
.
.
.
.
41
Viewing or changing the startup device
sequence
.
.
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.
.
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41
Exiting the Setup Utility program
.
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42
Chapter 7. Symptom-to-FRU index . .
43
Hard disk drive boot error
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43
Power Supply Problems
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43
Diagnostic error codes
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43
Beep symptoms
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61
POST error codes
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62
Miscellaneous error messages
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63
Undetermined problems
.
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.
65
Chapter 8. Replacing FRUs (Machine
Types: 0864, 7099, and 7846.)
.....
67
Locating connectors, controls, and indicators on
the front of your computer
.
.
.
.
.
.
.
.
.
.
67
Locating connectors and parts on the rear of your
computer
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
68
Locating components
.
.
.
.
.
.
.
.
.
.
.
.
68
Locating parts on the system board
.
.
.
.
.
.
69
Locating internal drives
.
.
.
.
.
.
.
.
.
.
.
70
Removing the computer cover
.
.
.
.
.
.
.
.
71
Removing and reinstalling the front bezel
.
.
.
.
72
Installing or replacing a PCI card
.
.
.
.
.
.
.
74
Installing or replacing a memory module
.
.
.
.
76
Replacing the battery
.
.
.
.
.
.
.
.
.
.
.
.
78
Replacing the power supply assembly
.
.
.
.
.
79
Replacing the heat sink and fan assembly
.
.
.
.
81
Replacing the microprocessor
.
.
.
.
.
.
.
.
83
Replacing the optical drive
.
.
.
.
.
.
.
.
.
.
86
Replacing the hard disk drive
.
.
.
.
.
.
.
.
.
87
Replacing the card reader
.
.
.
.
.
.
.
.
.
.
89
Replacing the front audio and USB assembly
.
.
90
Replacing the system board
.
.
.
.
.
.
.
.
.
91
Completing the parts replacement
.
.
.
.
.
.
.
94
Chapter 9. Replacing FRUs (Machine
Types: 0889, 5023, and 7844.)
.....
97
Locating connectors, controls, and indicators on
the front of your computer
.
.
.
.
.
.
.
.
.
.
97
Locating connectors and parts on the rear of your
computer
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
98
Locating components
.
.
.
.
.
.
.
.
.
.
.
.
98
© Copyright Lenovo 2010, 2012
iii