Contents
About this manual. . . . . . . . . . .
iii
Power management
. . . . . . . . . . . .
34
Screen blank mode (for the Windows 7
Chapter 1. Safety information . . . . .
1
operating system only) . . . . . . . . . .
34
General safety . . . . . . . . . . . . . . .
1
Sleep mode . . . . . . . . . . . . . .
34
Electrical safety . . . . . . . . . . . . . .
1
Hibernation mode
. . . . . . . . . . .
35
Safety inspection guide . . . . . . . . . . .
2
Symptom-to-FRU index . . . . . . . . . . .
35
Handling devices that are sensitive to electrostatic
Numeric error codes
. . . . . . . . . .
36
discharge. . . . . . . . . . . . . . . . .
3
Error messages
. . . . . . . . . . . .
37
Grounding requirements . . . . . . . . . . .
4
Beep symptoms . . . . . . . . . . . .
37
Safety notices (multilingual translations) . . . . .
4
No-beep symptoms . . . . . . . . . . .
37
LCD-related symptoms . . . . . . . . .
38
Chapter 2. Important service
Intermittent problems . . . . . . . . . .
38
information . . . . . . . . . . . . . .
19
Undetermined problems . . . . . . . . .
38
Strategy for replacing FRUs . . . . . . . . .
19
Strategy for replacing a solid-state drive . . .
19
Chapter 5. Locations . . . . . . . . .
41
Important notice for replacing a system
Locating computer controls, connectors, and
board . . . . . . . . . . . . . . . .
20
indicators. . . . . . . . . . . . . . . . .
41
How to use error message . . . . . . . .
20
Front view. . . . . . . . . . . . . . .
41
Strategy for replacing FRUs for CTO, special-bid,
Left-side view . . . . . . . . . . . . .
43
and standard models . . . . . . . . . . . .
20
Bottom view . . . . . . . . . . . . . .
44
Product definition . . . . . . . . . . . .
20
Locating FRUs and CRUs . . . . . . . . . .
44
FRU identification. . . . . . . . . . . .
20
Major FRUs . . . . . . . . . . . . . .
45
Chapter 3. General checkout . . . . .
23
LCD FRUs
. . . . . . . . . . . . . .
47
What to do first . . . . . . . . . . . . . .
23
Miscellaneous parts and other FRUs . . . .
50
Checkout guide . . . . . . . . . . . . . .
24
Looking up FRU information . . . . . . . . .
50
Lenovo Solution Center . . . . . . . . .
24
Chapter 6. FRU replacement
Quick test programs. . . . . . . . . . .
24
notices . . . . . . . . . . . . . . . .
51
UEFI diagnostic program . . . . . . . . .
25
Common service tools
. . . . . . . . . . .
51
Bootable diagnostic programs. . . . . . .
25
Screw notices . . . . . . . . . . . . . . .
51
Power system checkout . . . . . . . . . . .
26
Retaining serial numbers. . . . . . . . . . .
52
Checking the ac power adapter . . . . . .
26
Restoring the serial number of the system
Checking the battery and operational
unit . . . . . . . . . . . . . . . . .
52
charging . . . . . . . . . . . . . . .
27
Retaining the UUID . . . . . . . . . . .
53
Checking the coin-cell battery . . . . . . .
27
Reading or writing the ECA information . . .
54
Chapter 4. Related service
Chapter 7. Removing or replacing a
information . . . . . . . . . . . . . .
29
FRU . . . . . . . . . . . . . . . . . .
55
Restoring the factory contents by using the
product Recovery Disc Set . . . . . . . . . .
29
General guidelines . . . . . . . . . . . . .
55
Using the Windows recovery programs on the
Before servicing the computer . . . . . . . .
56
Windows 8.1 operating system . . . . . . . .
30
Disabling the built-in battery . . . . . . .
56
Passwords . . . . . . . . . . . . . . . .
32
Removing a major FRU . . . . . . . . . . .
56
Power-on password . . . . . . . . . . .
32
1010 Bottom cover . . . . . . . . . . .
56
Hard disk password . . . . . . . . . . .
32
1020 Battery. . . . . . . . . . . . . .
57
Supervisor password . . . . . . . . . .
33
1030 Hard disk drive or solid-state drive . . .
59
How to remove the power-on password . . .
33
1040 Wireless LAN card . . . . . . . . .
60
How to remove the hard disk password . . .
34
1050 Memory module . . . . . . . . . .
61
© Copyright Lenovo 2015
i

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