Lenovo ThinkCentre Edge 72z Hardware Maintenance Manual (HMM) (May 2012) - Thi - Page 5

Contents, Using the Setup Utility - power supply

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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 Safety inspection guide 5 Handling electrostatic discharge-sensitive devices 5 Grounding requirements 6 Safety notices (multi-lingual translations) . . . . . 6 Chapter 3. General information . . . . 29 Specifications 29 Lenovo ThinkVantage Tools 29 Lenovo Solution Center 30 Lenovo Welcome 30 SimpleTap 30 Additional information resources 31 Chapter 4. General Checkout . . . . . 33 Problem determination tips 33 Chapter 5. Troubleshooting and diagnostics 35 Basic troubleshooting 35 Troubleshooting procedure 36 Troubleshooting 37 Audio problems 37 CD problems 38 DVD problems 39 Intermittent problems 41 Keyboard, mouse, or pointing device problems 41 Monitor problems 43 Networking problems 44 Option problems 47 Performance and lockup problems . . . . . 48 Printer problems 49 Serial port problems 49 Software problems 50 USB problems 51 Diagnostics 51 Lenovo Solution Center 51 Chapter 6. Using the Setup Utility program 53 Starting the Setup Utility program 53 © Copyright Lenovo 2012 Viewing and changing settings 53 Using passwords 53 Password considerations 53 Power-On Password 54 Administrator Password 54 Setting, changing, and deleting a password . 54 Enabling or disabling a device 54 Selecting a startup device 55 Selecting a temporary startup device . . . . 55 Selecting or changing the startup device sequence 55 Exiting the Setup Utility program 55 Chapter 7. Symptom-to-FRU Index . . 57 Hard disk drive boot error 57 Power Supply Problems 57 Diagnostic error codes 57 Beep symptoms 75 POST error codes 75 Miscellaneous error conditions 76 Undetermined problems 78 Chapter 8. Locations 79 Locating connectors, controls, and indicators on the front of your computer 79 Locating connectors on the rear of your computer 81 Locating major FRUs and CRUs 82 Looking up FRU information 85 Locating parts on the system board 86 Chapter 9. Replacing FRUs 87 Removing and reinstalling the system stand hinge cover 87 Removing and reinstalling the system stand . . . 89 Removing and reinstalling the foot stands . . . . 91 Removing the computer cover 94 Replacing the hard disk drive 95 Replacing the optical drive 97 Removing the VESA mount bracket 98 Replacing the rear I/O assembly 99 Removing and reinstalling the system board shield 101 Replacing the power supply 102 Replacing the microprocessor fan 103 Replacing the heat sink assembly 104 Replacing the microprocessor 106 Replacing the card reader 109 iii

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Contents
Chapter 1. About this manual
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1
Important Safety Information
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Chapter 2. Safety information
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3
General safety
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3
Electrical safety
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Safety inspection guide
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5
Handling electrostatic discharge-sensitive
devices
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Grounding requirements
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Safety notices (multi-lingual translations)
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6
Chapter 3. General information
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29
Specifications
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Lenovo ThinkVantage Tools
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Lenovo Solution Center
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Lenovo Welcome
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SimpleTap
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30
Additional information resources
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31
Chapter 4. General Checkout
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33
Problem determination tips
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33
Chapter 5. Troubleshooting and
diagnostics
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35
Basic troubleshooting
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35
Troubleshooting procedure
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36
Troubleshooting
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Audio problems
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37
CD problems
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DVD problems
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39
Intermittent problems
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41
Keyboard, mouse, or pointing device
problems
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41
Monitor problems
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43
Networking problems
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44
Option problems
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47
Performance and lockup problems
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48
Printer problems
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49
Serial port problems
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49
Software problems
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USB problems
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Diagnostics
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51
Lenovo Solution Center
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51
Chapter 6. Using the Setup Utility
program
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53
Starting the Setup Utility program
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53
Viewing and changing settings
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53
Using passwords
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53
Password considerations
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53
Power-On Password
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54
Administrator Password
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54
Setting, changing, and deleting a password
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54
Enabling or disabling a device
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.
54
Selecting a startup device
.
.
.
.
.
.
.
.
.
.
55
Selecting a temporary startup device
.
.
.
.
55
Selecting or changing the startup device
sequence
.
.
.
.
.
.
.
.
.
.
.
.
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.
.
55
Exiting the Setup Utility program
.
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55
Chapter 7. Symptom-to-FRU Index . .
57
Hard disk drive boot error
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57
Power Supply Problems
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57
Diagnostic error codes
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57
Beep symptoms
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75
POST error codes
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75
Miscellaneous error conditions
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76
Undetermined problems
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78
Chapter 8. Locations
.........
79
Locating connectors, controls, and indicators on
the front of your computer
.
.
.
.
.
.
.
.
.
.
79
Locating connectors on the rear of your
computer
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
81
Locating major FRUs and CRUs
.
.
.
.
.
.
.
.
82
Looking up FRU information
.
.
.
.
.
.
.
.
.
85
Locating parts on the system board
.
.
.
.
.
.
86
Chapter 9. Replacing FRUs
......
87
Removing and reinstalling the system stand hinge
cover
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
87
Removing and reinstalling the system stand .
.
.
89
Removing and reinstalling the foot stands
.
.
.
.
91
Removing the computer cover
.
.
.
.
.
.
.
.
94
Replacing the hard disk drive
.
.
.
.
.
.
.
.
.
95
Replacing the optical drive
.
.
.
.
.
.
.
.
.
.
97
Removing the VESA mount bracket
.
.
.
.
.
.
98
Replacing the rear I/O assembly
.
.
.
.
.
.
.
.
99
Removing and reinstalling the system board
shield
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
101
Replacing the power supply
.
.
.
.
.
.
.
.
.
102
Replacing the microprocessor fan
.
.
.
.
.
.
.
103
Replacing the heat sink assembly
.
.
.
.
.
.
.
104
Replacing the microprocessor
.
.
.
.
.
.
.
.
106
Replacing the card reader
.
.
.
.
.
.
.
.
.
.
109
© Copyright Lenovo 2012
iii