Table Of Contents - Lenovo ThinkPad T590 Hardware Maintenance Manual

Contents
About this manual . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . . 2
Handling devices that are sensitive to electrostatic
discharge . . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Chapter 2. Important service
information . . . . . . . . . . . . . . . 21
Strategy for replacing FRUs . . . . . . . . . .
Strategy for replacing a solid-state drive . . .
Important notice for replacing a system
board . . . . . . . . . . . . . . . . .
How to use error message . . . . . . . . .
Strategy for replacing FRUs for CTO, special-bid,
and standard models. . . . . . . . . . . . .
Product definition . . . . . . . . . . . .
FRU identification . . . . . . . . . . . .
Chapter 3. General checkout . . . . . 25
What to do first . . . . . . . . . . . . . . .
Checkout guide . . . . . . . . . . . . . . .
Diagnosing problems . . . . . . . . . . .
Quick test programs . . . . . . . . . . .
UEFI diagnostic program . . . . . . . . .
Bootable diagnostic programs . . . . . . .
Power system checkout . . . . . . . . . . .
Checking the ac power adapter . . . . . . .
Checking the battery and operational
charging . . . . . . . . . . . . . . . .
Checking the coin-cell battery . . . . . . .
Chapter 4. Related service
information . . . . . . . . . . . . . . . 31
Recovery information . . . . . . . . . . . .
Recovery information for the Windows 10
operating system . . . . . . . . . . . .
Passwords. . . . . . . . . . . . . . . . .
Power-on password . . . . . . . . . . .
Hard disk password . . . . . . . . . . .
Supervisor password . . . . . . . . . . .
System management password. . . . . . .
How to remove the power-on password . . .
How to remove the hard disk password. . . .
© Copyright Lenovo 2020
How to remove the system management
password . . . . . . . . . . . . . . .
Power management . . . . . . . . . . . . .
Sleep mode . . . . . . . . . . . . . .
Hibernation mode . . . . . . . . . . . .
Symptom-to-FRU index . . . . . . . . . . .
Numeric error codes . . . . . . . . . . .
Error messages . . . . . . . . . . . . .
Beep symptoms . . . . . . . . . . . . .
No-beep symptoms . . . . . . . . . . .
LCD-related symptoms . . . . . . . . . .
Intermittent problems . . . . . . . . . . .
Undetermined problems
21
21
Chapter 5. Function keys . . . . . . . 45
22
Chapter 6. Locations . . . . . . . . . 47
22
Locating computer controls, connectors, and
indicators . . . . . . . . . . . . . . . . .
22
Front view . . . . . . . . . . . . . . .
22
Base view . . . . . . . . . . . . . . .
22
Left view . . . . . . . . . . . . . . . .
Right view . . . . . . . . . . . . . . .
Bottom view . . . . . . . . . . . . . .
25
Rear view . . . . . . . . . . . . . . .
26
Locating FRUs and CRUs . . . . . . . . . . .
26
Major FRUs and CRUs . . . . . . . . . .
27
LCD FRUs . . . . . . . . . . . . . . .
27
Miscellaneous parts and other FRUs . . . . .
27
Connector and cable guide . . . . . . . .
28
Looking up FRU information . . . . . . . . . .
29
Chapter 7. FRU replacement
29
notices . . . . . . . . . . . . . . . . . 59
29
Service tool kit . . . . . . . . . . . . . . .
Screw notices . . . . . . . . . . . . . . .
Retaining serial numbers . . . . . . . . . . .
Restoring the serial number of the system
31
unit . . . . . . . . . . . . . . . . . .
Retaining the UUID. . . . . . . . . . . .
31
Reading or writing the ECA information . . . .
33
33
Chapter 8. Removing or replacing a
33
FRU. . . . . . . . . . . . . . . . . . . 63
33
General guidelines. . . . . . . . . . . . . .
34
Before servicing the computer . . . . . . . . .
34
Disabling the built-in battery . . . . . . . .
35
Removing a major FRU . . . . . . . . . . . .
35
36
36
36
37
38
39
40
41
41
42
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