Lenovo ThinkPad L390 Yoga Bruksanvisning

Lenovo Laptop ThinkPad L390 Yoga

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L390, L390 Yoga, S2 4th Gen, and S2 Yoga

4th Gen

Hardware Maintenance Manual

Note: Before using this information and the product it supports, be sure to read the general information

under Appendix A “Notices” on page 107.

First Edition (December 2018)

LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration

“GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

Contents

About this manual . . . . . . . . . . . . iii

Chapter 1. Safety information . . . . . . 1

General safety . . . . . . . . . . . . . . . . 1

Electrical safety . . . . . . . . . . . . . . . . 1

Safety inspection guide . . . . . . . . . . . . . 3

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 . . . . . . . . . . 21

Strategy for replacing a hard disk drive or a

solid-state drive . . . . . . . . . . . . . 21

Important notice for replacing a system

board . . . . . . . . . . . . . . . . . 22

How to use error codes . . . . . . . . . . 22

Strategy for replacing FRUs for CTO, special-bid,

and standard models. . . . . . . . . . . . . 22

Product definition . . . . . . . . . . . . 22

FRU identification. . . . . . . . . . . . 23

Chapter 3. General checkout . . . . . 25

What to do first . . . . . . . . . . . . . . . 25

Checkout guide . . . . . . . . . . . . . . . 26

Diagnosing problems . . . . . . . . . . . 26

Quick test programs . . . . . . . . . . . 27

UEFI diagnostic program . . . . . . . . . 27

Bootable diagnostic programs . . . . . . . 28

Power system checkout . . . . . . . . . . . 28

Checking the ac power adapter . . . . . . . 29

Checking operational charging . . . . . . . 29

Checking the battery pack . . . . . . . . . 29

Checking the coin-cell battery . . . . . . . 30

Chapter 4. Related service

information . . . . . . . . . . . . . . . 31

Recovery overview for the Windows 10 operating

system . . . . . . . . . . . . . . . . . . 31

Resetting your computer . . . . . . . . . 31

Using advanced startup options . . . . . . 31

Recovering your operating system if Windows

10 fails to start . . . . . . . . . . . . . 32

Creating and using a recovery USB drive . . . 32

Passwords. . . . . . . . . . . . . . . . . 32

Power-on password . . . . . . . . . . . 33

Hard disk password . . . . . . . . . . . 33

Supervisor password . . . . . . . . . . . 33

How to remove the power-on password . . . 33

How to remove the hard disk password. . . . 34

Power management . . . . . . . . . . . . . 34

Sleep mode . . . . . . . . . . . . . . 34

Hibernation mode . . . . . . . . . . . . 35

Symptom-to-FRU index . . . . . . . . . . . 35

Numeric error codes . . . . . . . . . . . 36

Error messages . . . . . . . . . . . . . 38

Beep errors. . . . . . . . . . . . . . . 38

No-beep symptoms . . . . . . . . . . . 39

LCD-related symptoms . . . . . . . . . . 40

Intermittent problems . . . . . . . . . . . 40

Undetermined problems . . . . . . . . . 41

Chapter 5. Special keys . . . . . . . . 43

Chapter 6. Locations . . . . . . . . . 45

Locating computer controls, connectors, and

indicators . . . . . . . . . . . . . . . . . 45

Front . . . . . . . . . . . . . . . . . 45

Base . . . . . . . . . . . . . . . . . 46

Left-side view. . . . . . . . . . . . . . 46

Right-side view . . . . . . . . . . . . . 47

Bottom view . . . . . . . . . . . . . . 47

Locating FRUs and CRUs . . . . . . . . . . . 47

Major FRUs and CRUs . . . . . . . . . . 49

LCD FRUs and CRUs . . . . . . . . . . . 51

Miscellaneous parts . . . . . . . . . . . 54

Connector and cable guide . . . . . . . . 54

Looking up FRU information . . . . . . . . . . 60

Chapter 7. FRU replacement

notices . . . . . . . . . . . . . . . . . 61

Service tool kit . . . . . . . . . . . . . . . 61

Screw notices . . . . . . . . . . . . . . . 62

Retaining serial numbers . . . . . . . . . . . 62

Restoring the serial number of the system

unit . . . . . . . . . . . . . . . . . . 63

Retaining the UUID. . . . . . . . . . . . 63

Chapter 8. Removing or replacing a

FRU. . . . . . . . . . . . . . . . . . . 65

General guidelines . . . . . . . . . . . . . . 65

Disabling the built-in battery . . . . . . . . . . 66

1010 MicroSD card . . . . . . . . . . . . . 66

1020 ThinkPad Pen Pro. . . . . . . . . . . . 67

1030 Keyboard . . . . . . . . . . . . . . . 67

Produktspecifikationer

Varumärke:	Lenovo
Kategori:	Laptop
Modell:	ThinkPad L390 Yoga
Vikt:	209 g
Visa kvantitet:	50
Maximal räckvidd:	- m
Frekvens:	446.00625 - 446.09375 MHz
Mått (B x D x H):	58 x 112 x 34 mm
Sändningseffekt:	500 mW
Batteriteknik:	Lithium-Ion (Li-Ion)
Energiebesparende modus:	Ja
Toon-squelch:	CTCSS
Antal kanaler (totalt):	16 kanalen