Lenovo ThinkCentre M72e, Hardware Maintenance Manual

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Contents
Chapter 1. About this manual . . . . . . 1
Important safety information . . . . . . . . . . 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 . . . . 33
Lenovo Welcome. . . . . . . . . . . . . . 33
Lenovo ThinkVantage Tools . . . . . . . . . 33
Lenovo Solution Center . . . . . . . . . . . 33
SimpleTap . . . . . . . . . . . . . . . . 33
Additional information resources . . . . . . . 34
Specifications . . . . . . . . . . . . . . . 34
Chapter 4. General checkout . . . . . 35
Problem determination tips . . . . . . . . . . 35
Chapter 5. Troubleshooting and
diagnostics . . . . . . . . . . . . . .
37
Basic troubleshooting . . . . . . . . . . . . 37
Troubleshooting procedure . . . . . . . . . . 38
Troubleshooting . . . . . . . . . . . . . . 38
Audio problems . . . . . . . . . . . . 39
CD problems . . . . . . . . . . . . . 40
DVD problems . . . . . . . . . . . . . 41
Intermittent problems . . . . . . . . . . 42
Hard disk drive problems . . . . . . . . . 43
Keyboard, mouse, or pointing device
problems . . . . . . . . . . . . . . .
43
Monitor problems. . . . . . . . . . . . 45
Networking problems . . . . . . . . . . 47
Option problems . . . . . . . . . . . . 49
Performance and lockup problems . . . . . 50
Printer problems . . . . . . . . . . . . 52
Serial port problems. . . . . . . . . . . 52
Software problems . . . . . . . . . . . 52
USB problems . . . . . . . . . . . . . 53
Diagnostics . . . . . . . . . . . . . . . . 54
Lenovo Solution Center . . . . . . . . . 54
Chapter 6. Using the Setup Utility
program . . . . . . . . . . . . . . . .
55
Starting the Setup Utility program . . . . . . . 55
Viewing and changing settings . . . . . . . . 55
Using passwords. . . . . . . . . . . . . . 55
Password considerations . . . . . . . . . 56
Power-On Password . . . . . . . . . . 56
Administrator Password . . . . . . . . . 56
Hard Disk Password. . . . . . . . . . . 56
Setting, changing, and deleting a password . 56
Erasing lost or forgotten passwords (clearing
CMOS) . . . . . . . . . . . . . . . .
57
Enabling or disabling a device . . . . . . . . 57
Selecting a startup device . . . . . . . . . . 58
Selecting a temporary startup device . . . . 58
Selecting or changing the startup device
sequence . . . . . . . . . . . . . . .
58
Enabling ErP compliance mode . . . . . . . . 58
Exiting the Setup Utility program . . . . . . . 59
Chapter 7. Symptom-to-FRU index . . 61
Hard disk drive boot error . . . . . . . . . . 61
Power supply problems . . . . . . . . . . . 61
Beep symptoms . . . . . . . . . . . . . . 61
POST error codes . . . . . . . . . . . . . 62
Miscellaneous error messages . . . . . . . . 64
Undetermined problems . . . . . . . . . . . 65
Chapter 8. Locations . . . . . . . . . 67
Locating connectors, controls, and indicators on
the front of your computer . . . . . . . . . .
67
Locating connectors on the rear of your
computer . . . . . . . . . . . . . . . . .
68
Locating FRUs and CRUs . . . . . . . . . . 69
Looking up FRU information . . . . . . . . . 71
Locating parts on the system board . . . . . . 72
Chapter 9. Replacing FRUs . . . . . . 73
Handling static-sensitive devices . . . . . . . 73
Installing or replacing hardware . . . . . . . . 73
Installing or removing the vertical stand . . . 73
Installing or removing the VESA mount
bracket . . . . . . . . . . . . . . . .
75
Removing the computer cover. . . . . . . 77
Installing or replacing a memory module . . . 79
Replacing the optical drive . . . . . . . . 81
Replacing the secondary hard disk drive. . . 86
Replacing the battery . . . . . . . . . . 92
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