Lenovo ThinkPad X220 Maintenance Manual

Powersystemcheckout
Toverifyasymptom,dothefollowing:
1.Turnoffthecomputer.
2.Removethebatterypack.
3.Connecttheacpoweradapter.
4.Checkthatpowerissuppliedwhenyouturnonthecomputer.
5.Turnoffthecomputer.
6.Disconnecttheacpoweradapterandinstallthechargedbatterypack.
7.Checkthatthebatterypacksuppliespowerwhenyouturnonthecomputer.
Ifyoususpectapowerproblem,seetheappropriateoneofthefollowingpowersupplycheckouts:
•“Checkingtheacpoweradapter”onpage33
•“Checkingoperationalcharging”onpage33
•“Checkingthebatterypack”onpage34
•“Checkingthebackupbattery”onpage34
Checkingtheacpoweradapter
Youareherebecausethecomputerfailsonlywhentheacpoweradapterisused.
•Ifthepowerproblemoccursonlywhenthedockingstationortheportreplicatorisused,replacethe
dockingstationortheportreplicator.
•Ifthepower-onindicatordoesnotturnon,checkthepowercordoftheacpoweradapterforcorrect
continuityandinstallation.
•Ifthecomputerdoesnotchargeduringoperation,goto“Checkingoperationalcharging”onpage33
.
Tochecktheacpoweradapter,dothefollowing:
1.Unplugtheacpoweradaptercablefromthecomputer.
2.Measuretheoutputvoltageattheplugoftheacpoweradaptercable.Seethefollowinggure:
Pin
Voltage(Vdc)
1+20
20
3
Ground
1
2
3
(20V)
Note:Outputvoltageofpinno.2oftheacpoweradaptermaydifferentfromtheoneyouareservicing.
3.Ifthevoltageisnotcorrect,replacetheacpoweradapter.
4.Ifthevoltageisacceptable,dothefollowing:
•Replacethesystemboard.
•Iftheproblempersists,goto“FRUtests”onpage31.
Note:Noisefromtheacpoweradapterdoesnotalwaysindicateadefect.
Checkingoperationalcharging
Tocheckwhetherthebatterychargesproperlyduringoperation,useadischargedbatterypackorabattery
packthathaslessthan50%ofthetotalpowerremainingwheninstalledinthecomputer.
Chapter3.Generalcheckout33

Lenovo ThinkPad X220 Specifications

General

Bus type	DMI
Stepping	J1
Tjunction	100 °C
Processor cache	3 MB
Processor cores	2
Processor model	i5-2520M
System bus rate	5 GT/s
Processor family	Intel® Core™ i5
Processor series	Intel Core i5-2500 Mobile Series
Processor socket	Socket 988
Processor threads	4
Processor codename	Sandy Bridge
Processor frequency	2.5 GHz
Processor cache type	Smart Cache
Processor lithography	32 nm
Processor manufacturer	Intel
Processor front side bus	- MHz
PCI Express slots version	2.0
Processor boost frequency	3.2 GHz
Processor operating modes	64-bit
ECC supported by processor	No
PCI Express configurations	1x16, 2x8, 1x8+2x4
Thermal Design Power (TDP)	35 W
CPU multiplier (bus/core ratio)	25
Maximum number of PCI Express lanes	16
Internal memory	4 GB
Memory clock speed	1333 MHz
Maximum internal memory	8 GB
HDD capacity	160 GB
SSD capacity	The Solid State Drive's storage capacity in Gigabytes.
HDD interface	SATA
Card reader integrated	Yes
Compatible memory cards	SD
Display diagonal	12.5 \
Display resolution	1366 x 768 pixels
Native aspect ratio	16:9
Graphics card	HD Graphics
Power supply type	AC/DC
Wireless technology	802.11a/g/n
Compatible operating systems	Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional
Charging port type	DC-in jack
USB 2.0 ports quantity	3
Ethernet LAN (RJ-45) ports	1
Operating system installed	Windows 7 Professional
Form factor	Convertible (Swivel)
Product type	Hybrid (2-in-1)
Product color	Black
Processor code	SR048
Processor ARK ID	52229
Processor package size	37.5 x 37.5 (rPGA988B); 31 x 24 (BGA1023) mm
Supported instruction sets	AVX
Intel Identity Protection Technology version	1.00
On-board graphics card ID	0x116
On-board graphics card model	Intel® HD Graphics 3000
On-board graphics card family	Intel® HD Graphics
On-board graphics card base frequency	650 MHz
On-board graphics card dynamic frequency (max)	1300 MHz

Weight and Dimensions

Depth	228.7 mm
Width	305 mm
Height	31.3 mm
Weight	1760 g