Lenovo ThinkPad Edge E431 Hardware Maintenance Manual - Page 3

Contents, Status indicators - windows 7

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Contents About this manual iii Chapter 1. Safety information 1 General safety 1 Electrical safety 2 Safety inspection guide 3 Handling devices that are sensitive to electrostatic discharge 3 Grounding requirements 4 Safety notices (multilingual translations 4 Laser compliance statement (multilingual translations 17 Chapter 2. Important service information 23 Strategy for replacing FRUs 23 Strategy for replacing a hard disk drive or a solid-state drive 24 Important notice for replacing a system board 24 How to use error codes 24 Strategy for replacing FRUs for CTO, CMV, and GAV 24 Product definition 24 FRU identification for CTO, CMV, and GAV products 25 Chapter 3. General checkout . . . . . 27 What to do first 27 Checkout guide 28 Lenovo Solution Center 28 Quick test programs 28 UEFI diagnostic program 29 Bootable diagnostic programs 29 Power system checkout 30 Checking the ac power adapter 30 Checking operational charging 31 Checking the battery pack 31 Checking the backup battery 32 Chapter 4. Related service information 33 Restoring the factory contents by using the product Recovery Disc Set 33 Using the Windows recovery programs on the Windows 8 operating system 34 Refreshing your computer 34 Resetting your computer to the factory default settings 34 © Copyright Lenovo 2013 Using the advanced startup options . . . . 35 Recovering your operating system if Windows 8 fails to start 35 Creating and using recovery media . . . . . 35 Passwords 36 Power-on password 36 Hard disk password 37 Supervisor password 37 How to remove the power-on password . . . 37 How to remove the hard disk password . . . 38 Power management 38 Screen blank mode (for the Windows 7 operating system only 38 Sleep mode 38 Hibernation mode 39 Symptom-to-FRU index 39 Numeric error codes 40 Error messages 42 Beep symptoms 42 No-beep symptoms 42 LCD-related symptoms 43 Intermittent problems 43 Undetermined problems 43 Chapter 5. Status indicators . . . . . 45 Chapter 6. Special keys 47 Chapter 7. Locations 49 Locating computer controls, connectors, and indicators 49 Front view 49 Rear view 50 Bottom view 50 Locating FRUs and CRUs 50 Major FRUs and CRUs 52 LCD FRUs and CRUs 54 Miscellaneous kits and other FRUs . . . . . 57 Looking up FRU information 57 Chapter 8. FRU replacement notices 59 Screw notices 59 Retaining serial numbers 60 Restoring the serial number of the system unit 60 Retaining the UUID 61 Reading or writing the ECA information . . . 61 i

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Contents
About this manual
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iii
Chapter 1. Safety information
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1
General safety
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1
Electrical safety
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2
Safety inspection guide
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3
Handling devices that are sensitive to electrostatic
discharge
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3
Grounding requirements
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4
Safety notices (multilingual translations)
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4
Laser compliance statement (multilingual
translations)
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17
Chapter 2. Important service
information
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23
Strategy for replacing FRUs
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23
Strategy for replacing a hard disk drive or a
solid-state drive
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24
Important notice for replacing a system
board
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24
How to use error codes
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24
Strategy for replacing FRUs for CTO, CMV, and
GAV
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24
Product definition
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24
FRU identification for CTO, CMV, and GAV
products
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25
Chapter 3. General checkout
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27
What to do first
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27
Checkout guide
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28
Lenovo Solution Center
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28
Quick test programs
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28
UEFI diagnostic program
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29
Bootable diagnostic programs
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29
Power system checkout
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30
Checking the ac power adapter
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30
Checking operational charging
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31
Checking the battery pack
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31
Checking the backup battery
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32
Chapter 4. Related service
information
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33
Restoring the factory contents by using the
product Recovery Disc Set
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33
Using the Windows recovery programs on the
Windows 8 operating system
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34
Refreshing your computer
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34
Resetting your computer to the factory default
settings
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34
Using the advanced startup options
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35
Recovering your operating system if Windows
8 fails to start
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35
Creating and using recovery media
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35
Passwords
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36
Power-on password
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36
Hard disk password
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37
Supervisor password
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37
How to remove the power-on password .
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37
How to remove the hard disk password .
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38
Power management
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38
Screen blank mode (for the Windows 7
operating system only)
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38
Sleep mode
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38
Hibernation mode
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39
Symptom-to-FRU index
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39
Numeric error codes
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40
Error messages
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42
Beep symptoms
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42
No-beep symptoms
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42
LCD-related symptoms
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43
Intermittent problems
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43
Undetermined problems
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43
Chapter 5. Status indicators
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45
Chapter 6. Special keys
........
47
Chapter 7. Locations
.........
49
Locating computer controls, connectors, and
indicators
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
49
Front view
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49
Rear view
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50
Bottom view
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.
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50
Locating FRUs and CRUs
.
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.
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.
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.
.
50
Major FRUs and CRUs
.
.
.
.
.
.
.
.
.
.
52
LCD FRUs and CRUs
.
.
.
.
.
.
.
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.
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54
Miscellaneous kits and other FRUs
.
.
.
.
.
57
Looking up FRU information
.
.
.
.
.
.
.
.
.
57
Chapter 8. FRU replacement
notices
................
59
Screw notices
.
.
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.
59
Retaining serial numbers
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60
Restoring the serial number of the system
unit
.
.
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.
.
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.
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.
.
60
Retaining the UUID
.
.
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.
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.
.
61
Reading or writing the ECA information .
.
.
61
© Copyright Lenovo 2013
i