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) . . . . . . . . . . . . . . . . 16

Chapter 2. Important service
information	23
Strategy for replacing FRUs	23
Strategy for replacing a hard disk drive . . .	24
Important notice for replacing a system
board	24
How to use error message	24
Strategy for replacing FRUs for CTO, CMV, and
GAV	25
Product definition	25
FRU identification for CTO, CMV, and GAV
products	25

Chapter 3. General checkout	27
What to do first	27
Checkout guide	28
Diagnostics using PC-Doctor for DOS. . . .	28
Lenovo ThinkVantage Toolbox	31
PC-Doctor for Windows	31
PC-Doctor for Rescue and Recovery . . . .	31
FRU tests	31
Power system checkout	33
Checking the ac power adapter	33
Checking operational charging	33
Checking the battery pack	34
Checking the backup battery	34
Chapter 4. Related service
information	37
Restoring the factory contents by using Product
Recovery discs	37
Restoring the factory contents by using Recovery
Disc Set	37
Passwords	39
Power-on password	39
Hard-disk password	39

Supervisor password	39
How to remove the power-on password . . .	39
How to remove the hard-disk password . . .	40
Power management	40
Screen blank mode	40
Sleep (Standby) mode	41
Hibernation mode	41
Symptom-to-FRU index	42
Numeric error codes	43
Error messages	47
Beep symptoms	48
No-beep symptoms	49
LCD-related symptoms	49
Intermittent problems	49
Undetermined problems	50

Chapter 5. Status indicators		51
Chapter 6. Fn key combinations . . .		53
Chapter 7. FRU replacement
notices		55
Screw notices		55
Retaining serial numbers		56
Restoring the serial number of the system
unit		56
Retaining the UUID		57
Reading or writing the ECA information . . .		57
Chapter 8. Removing and replacing a
FRU		59
Before servicing ThinkPad X220 Tablet and X220i
Tablet models		60
1010	Digitizer pen	61
1020	Battery pack	61
1030 Hard disk drive (HDD) and solid state drive
(SSD)		62
1040	DIMM	64
1050	Hinge caps	66
1060	Keyboard	67
1070	Palm rest	70
1080	Backup battery	72
1090	PCI Express Mini Card for wireless
LAN/WiMAX		74
1100	PCI Express Mini Card for wireless WAN . .	76
1110	Bluetooth daughter card (BDC-2.1) . . . .	78
1120	Keyboard bezel	79
1130	LCD assembly	82

IBM X220I manual Contents