Lenovo ThinkPad Edge E420 Hardware Maintenance Manual - Page 3

Contents, General checkout - recovery

Get Lenovo ThinkPad Edge E420 PDF manuals and user guides View all Lenovo ThinkPad Edge E420 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 3 highlights

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 25 Strategy for replacing FRUs 25 Strategy for replacing a hard disk drive . . . 26 Important notice for replacing a system board 26 How to use error message 26 Strategy for replacing FRUs for CTO, CMV, and GAV 26 Product definition 26 FRU identification for CTO, CMV, and GAV products 27 Chapter 3. General checkout . . . . . 29 What to do first 29 Checkout guide 30 System supporting the Lenovo ThinkVantage Toolbox program and the PC-Doctor for DOS diagnostics program 30 System supporting the Lenovo diagnostics programs 34 Power system checkout 36 Checking the ac power adapter 36 Checking operational charging 37 Checking the battery pack 37 Checking the backup battery 38 Chapter 4. Related service information 39 Restoring the factory contents by using Recovery Disc Set 39 Passwords 40 Power-on password 40 Hard-disk password 40 Supervisor password 41 How to remove the power-on password . . . 41 How to remove the hard-disk password . . . 41 Power management 42 Screen blank mode 42 Sleep (standby) mode 42 Hibernation mode 42 Symptom-to-FRU index 43 Numeric error codes 44 Error messages 44 No-beep symptoms 44 LCD-related symptoms 45 Intermittent problems 45 Undetermined problems 45 Chapter 5. Status indicators . . . . . 47 Chapter 6. Special keys 49 Chapter 7. FRU replacement notices 51 Screw notices 51 Retaining serial numbers 52 Restoring the serial number of the system unit 52 Retaining the UUID 53 Reading or writing the ECA information . . . 53 Chapter 8. Removing and replacing a FRU 55 Before servicing ThinkPad Edge E420 models . . 55 1010 Battery pack 56 1020 ExpressCard blank bezel 57 1030 Bottom slot cover 58 1040 Optical drive or travel cover 59 1050 Memory modules 60 1060 Hard disk drive assembly 61 1070 PCI Express Mini Card for wireless LAN . . 63 1080 PCI Express Mini Card for wireless WAN . . 64 1080 mSATA solid state drive 65 1090 Backup battery 66 1110 Keyboard 67 1120 Top case assembly 68 1130 Bluetooth daughter card 71 1140 Express sub card 72 1150 Speaker assembly 73 1160 System board assembly and fan assembly . 74 1170 CPU 80 1180 DC-in sub card and base cover assembly . . 81 © Copyright Lenovo 2012 i

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
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
..............
25
Strategy for replacing FRUs
.
.
.
.
.
.
.
.
.
25
Strategy for replacing a hard disk drive
.
.
.
26
Important notice for replacing a system
board
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
26
How to use error message
.
.
.
.
.
.
.
.
26
Strategy for replacing FRUs for CTO, CMV, and
GAV
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
26
Product definition
.
.
.
.
.
.
.
.
.
.
.
.
26
FRU identification for CTO, CMV, and GAV
products
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
27
Chapter 3. General checkout
.....
29
What to do first
.
.
.
.
.
.
.
.
.
.
.
.
.
.
29
Checkout guide
.
.
.
.
.
.
.
.
.
.
.
.
.
.
30
System supporting the Lenovo ThinkVantage
Toolbox program and the PC-Doctor for DOS
diagnostics program
.
.
.
.
.
.
.
.
.
.
30
System supporting the Lenovo diagnostics
programs
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
34
Power system checkout
.
.
.
.
.
.
.
.
.
.
.
36
Checking the ac power adapter
.
.
.
.
.
.
36
Checking operational charging
.
.
.
.
.
.
37
Checking the battery pack
.
.
.
.
.
.
.
.
37
Checking the backup battery
.
.
.
.
.
.
.
38
Chapter 4. Related service
information
..............
39
Restoring the factory contents by using Recovery
Disc Set
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
39
Passwords
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
40
Power-on password
.
.
.
.
.
.
.
.
.
.
.
40
Hard-disk password
.
.
.
.
.
.
.
.
.
.
.
40
Supervisor password
.
.
.
.
.
.
.
.
.
.
41
How to remove the power-on password .
.
.
41
How to remove the hard-disk password .
.
.
41
Power management
.
.
.
.
.
.
.
.
.
.
.
.
42
Screen blank mode
.
.
.
.
.
.
.
.
.
.
.
42
Sleep (standby) mode
.
.
.
.
.
.
.
.
.
.
42
Hibernation mode
.
.
.
.
.
.
.
.
.
.
.
42
Symptom-to-FRU index
.
.
.
.
.
.
.
.
.
.
.
43
Numeric error codes
.
.
.
.
.
.
.
.
.
.
44
Error messages
.
.
.
.
.
.
.
.
.
.
.
.
44
No-beep symptoms
.
.
.
.
.
.
.
.
.
.
.
44
LCD-related symptoms
.
.
.
.
.
.
.
.
.
45
Intermittent problems
.
.
.
.
.
.
.
.
.
.
45
Undetermined problems
.
.
.
.
.
.
.
.
.
45
Chapter 5. Status indicators
.....
47
Chapter 6. Special keys
........
49
Chapter 7. FRU replacement
notices
................
51
Screw notices
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
51
Retaining serial numbers
.
.
.
.
.
.
.
.
.
.
.
52
Restoring the serial number of the system
unit
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
52
Retaining the UUID
.
.
.
.
.
.
.
.
.
.
.
53
Reading or writing the ECA information .
.
.
53
Chapter 8. Removing and replacing a
FRU
..................
55
Before servicing ThinkPad Edge E420 models
.
.
55
1010 Battery pack
.
.
.
.
.
.
.
.
.
.
.
.
.
56
1020 ExpressCard blank bezel
.
.
.
.
.
.
.
.
57
1030 Bottom slot cover
.
.
.
.
.
.
.
.
.
.
.
58
1040 Optical drive or travel cover
.
.
.
.
.
.
.
59
1050 Memory modules
.
.
.
.
.
.
.
.
.
.
.
60
1060 Hard disk drive assembly
.
.
.
.
.
.
.
.
61
1070 PCI Express Mini Card for wireless LAN
.
.
63
1080 PCI Express Mini Card for wireless WAN .
.
64
1080 mSATA solid state drive
.
.
.
.
.
.
.
.
.
65
1090 Backup battery
.
.
.
.
.
.
.
.
.
.
.
.
66
1110 Keyboard
.
.
.
.
.
.
.
.
.
.
.
.
.
.
67
1120 Top case assembly
.
.
.
.
.
.
.
.
.
.
.
68
1130
Bluetooth
daughter card
.
.
.
.
.
.
.
.
71
1140 Express sub card
.
.
.
.
.
.
.
.
.
.
.
72
1150 Speaker assembly
.
.
.
.
.
.
.
.
.
.
.
73
1160 System board assembly and fan assembly
.
74
1170 CPU
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
80
1180 DC-in sub card and base cover assembly .
.
81
© Copyright Lenovo 2012
i