Lenovo Edge 2 User Guide

							17
Important service information
Use the following strategy to prevent unnecessary expense for replacing and 
servicing FRUs:
• If you are instructed to replace an FRU, but the replacement does not solve 
the problem, reinstall the original FRU before you continue.
•  Some computers have both a processor board and a system board. If you 
are instructed to replace either of them, and replacing one of them does not 
solve the problem, reinstall that board, and then replace the other one.\
 
•  If an adapter or a device consists of more than one FRU, any of the FRUs 
may be the cause of the error. Before replacing the adapter or device, 
remove the FRUs one by one to see if the symptoms change. Replace only 
the FRU that changed the symptoms. 
Attention:  The setup configuration on the computer you are servicing may 
have been customized. Running Automatic Configuration may alter the 
settings.  Note  the  current  configuration  settings  (using  the  View  Configuration 
option); then, when service has been completed, verify that those setti\
ngs 
remain in effect.
Strategy for replacing a hard disk drive
Always try to run a low-level format before replacing a hard disk drive.\
 This 
will cause all customer data on the hard disk to be lost. Make sure that the 
customer has a current backup of the data before performing this action.\
Attention:  The drive startup sequence in the computer you are servicing may 
have been changed. Be extremely careful during write operations such as 
copying, saving, or formatting. If you select an incorrect drive, data or programs 
can be overwritten.
Important notice for replacing a system board 
Some components mounted on a system board are very sensitive. Improper 
handling can cause damage to those components, and may cause a system 
malfunction.
Attention:   When handling a system board:
•  Do not drop the system board or apply any excessive force to it.
•  Avoid rough handling of any kind.
•  Avoid bending the system board and hard pushing to prevent cracking at 
each BGA (Ball Grid Array) chipset. 
						

							18
Important information about replacing RoHS compliant FRUs
RoHS, The Restriction of Hazardous Substances in Electrical and 
Electronic Equipment Directive (2002/95/EC) is a European Union legal 
requirement affecting the global electronics industry. RoHS requirements 
must be implemented on Lenovo products placed on the market after 
June 2006. Products on the market before June 2006 are not required to 
have RoHS compliant parts. If the original FRU parts are non-compliant, 
replacement parts can also be non-compliant. In all cases if the original 
FRU parts are RoHS compliant, the replacement part must also be RoHS 
compliant.
Note:  RoHS  and  non-RoHS  FRU  part  numbers  with  the  same  fit  and  function 
are identified with unique FRU part numbers.
Lenovo plans to transit to RoHS compliance well before the implementation 
date and expects its suppliers to be ready to support Lenovo’s requirements 
and schedule in the EU. Products sold in 2005 and 2006 will contain some 
RoHS compliant FRUs. The following statement pertains to these products and 
any product Lenovo produces containing RoHS compliant FRUs.
RoHS compliant FRUs have unique FRU part numbers. Before or after the 
RoHS implementation date, failed RoHS compliant parts must always be 
replaced  with  RoHS  compliant  ones,  so  only  the  FRUs  identified  as  compliant 
in the system HMM or direct substitutions for those FRUs may be used. 
Products marketed before June 2006 Products marketed after June 2006 
Current or 
original part  Replacement FRU 
Current or 
original part Replacement FRU
Non-RoHS Can be Non-RoHS
Must be RoHSMust be RoHS
Non-RoHS
Can be RoHS
Non-RoHS Can sub to RoHS
RoHS Must be RoHS
Note: A direct substitution is a part with a different FRU part number that is 
automatically shipped by the distribution center at the time of the orde\
r.
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							19
General checkout 
General checkout 
This chapter presents the following information:
• “What to do first” on page 20
•  “Power system checkout” on page 21
Before you go to the checkout, make sure to read the following important\
 notes:
Important notes:
•	 Only	certified	trained	personnel	can	service	the	computer.
•	 Before	 replacing	 any	FRU,	 read	the	 entire	 page	on	removing	 and	replacing 	
FRUs.
•	 Carefully	remove	screws	for 	reuse	when	replacing	FRUs.
•	 Be	 extremely	 careful	during	such	write	 operations	 as	copying,	 saving,	or	
formatting.	 Drives	in	the	 computer	 that	you	are	servicing	 sequence	might	
have	 been	altered.	 If	you	 select	 an	incorrect	 drive,	data	or	programs	 might	be	
overwritten.
•	 Replace	 an	FRU	 only	with	 another 	FRU	 of	the	 correct	 model.	When	you	
replace	 an	FRU,	 make	sure	that	the	machine	 model	and	the	FRU	 part	number	 are	
correct	by	referring	to	the	FRU	parts	list.	
•	 An	 FRU	should	 not	be	replaced	 just	because	 of	a	single,	 unreproducible 	
failure.	 Single	failures	 can	occur	 for	a	variety	 of	reasons	 that	have	 nothing	 to	
do	 with	 a	hardware	 defect,	such	as	cosmic	 radiation,	 electrostatic	 discharge,	or	
software	 errors.	Consider	 replacing	 an	FRU	 only	when	 a	problem	 recurs.	If	you	
suspect	 that	an	FRU	 is	defective,	 clear	the	error	 logs	and	run	the	test	 again.	 If	the	
error	does	not	recur,	do	not	replace	the	FRU.	
•	 Be	careful	not	to	replace	a	nondefective	FRU. 
						

							20
What to do first
When you do return an FRU, you must include the following information in the 
parts exchange form or parts return form that you attach to it:
1. Name and phone number of servicer
2.  Date of service
3.  Date on which the machine failed
4.  Date of purchase
5.  Procedure index and page number in which the failing FRU was detected 
6.  Failing FRU name and part number
7.  Machine type, model number, and serial number
8.  Customer’s name and address
Note for warranty:  During the warranty period, the customer may be 
responsible for repair costs if the computer damage was caused by misuse\
, 
accident, modification, unsuitable physical or operating environment, or 
improper maintenance by the customer.
The following is a list of some common items that are not covered under 
warranty and some symptoms that might indicate that the system was 
subjected to stress beyond normal use.
Before checking problems with the computer, determine whether the damage is 
covered under the warranty by referring to the following list:
The following are not covered under warranty: 
•  LCD panel cracked from the application of excessive force or from being 
dropped
•  Scratched (cosmetic) parts
•  Distortion, deformation, or discoloration of the cosmetic parts
•  Plastic parts, latches, pins, or connectors that have been cracked or broken 
by excessive force
•  Damage caused by liquid spilled into the system
•  Damage caused by the improper insertion of a PC Card or the installation of 
an incompatible card
•  Improper disk insertion or use of an optical drive 
•  Diskette drive damage caused by pressure on the diskette drive cover, 
foreign material in the drive, or the insertion of a diskette with multi\
ple labels 
•  Damaged or bent diskette eject button
•  Fuses blown by attachment of a nonsupported device
•  Forgotten computer password (making the computer unusable)
•  Sticky keys caused by spilling a liquid onto the keyboard
•  Use of an incorrect AC adapter on laptop products
The following symptoms might indicate damage caused by nonwarranted 
activities: 
•  Missing parts might be a symptom of unauthorized service or modification. 
•  If the spindle of a hard disk drive becomes noisy, it may have been subjected 
to excessive force, or dropped.
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General checkout 
Power system checkout
To verify a symptom, follow the steps below:
1. Turn off the computer.
2.  Connect the AC adapter.
3.  Make sure that power is supplied when you turn on the computer.
4.  Turn off the computer.
5.  Disconnect the AC adapter.
6.  Make sure that the battery pack supplies power when you turn on the 
computer.
If you suspect a power problem, see the appropriate power supply checkou\
t:
•  “Checking the AC adapter” on page 21
•  “Checking operational charging” on page 21
Checking the AC adapter 
You are here because the computer fails only when the AC adapter is used. 
• If the power-on indicator does not turn on, check the power cord of the AC 
adapter for correct continuity and installation.
•  If the computer does not charge during operation, go to “Checking 
operational charging” on page 21.
To check the AC adapter, follow the steps below:
1.  Unplug the AC adapter cable from the computer.
2.  Measure the output voltage at the plug of the AC adapter cable. See the 
following figure:
Note:  Output voltage for the AC adapter pin No. 2 may differ from the one you 
are servicing.
3.  If the voltage is not correct, replace the AC adapter.
4.  If the voltage is acceptable, do the following: 
•  Replace the system board.
•  If the problem persists, go to “Lenovo Edge 2 15” on page 27.
Note:  Noise from the AC adapter does not always indicate a defect.
Checking operational charging
To check whether the battery charges properly during operation, use a 
discharged battery pack or a battery pack that has less than 50% of the total 
power remaining when installed in the computer.  
						

							22
Perform operational charging. If the battery status indicator or icon is\
 not lit, 
remove the battery pack and let it return to room temperature. Reinstall\
 the 
battery pack. If the charge indicator or icon is still off, replace the battery pack.
If the charge indicator is still not lit, replace the system board.
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							23
Related service information
Related service information
This chapter presents the following information:
• “Restoring the factory contents by using OneKey Recovery” on page \
23
•  “Passwords” on page 24
•  “Power management” on page 25
 Restoring the factory contents by using OneKey Recovery
Restore of factory default
The Lenovo Edge 2 15 computer comes with pre-installed OneKey Recovery 
System.In  order  to  save  application  files  and  the  initial  backed  up  files  of  the 
system, the hard disk in a Lenovo computer includes a hidden partition when 
it  is  shipped.  If  you  need  to  restore  the  system  to  the  point  of  your  first  boot 
up, just enter Lenovo OneKey Recovery System and run  System Recovery. 
For details of OneKey Recovery System, see  the User Guide for Lenovo OneKey 
Recovery system .
Note:	
This	 will	delete	 all	the	 new	 data	on	the	 system	 partition	 (C	drive),	 which	
is	 not	 recoverable.	 Make	sure	to	back	 up	your	 critical	 data	before	 you	perform	 this	
action. 
						

							24
Passwords
As many as three passwords may be needed for any Lenovo computer: the 
power-on password (POP), the hard disk password (HDP), and the supervisor 
password.
If any of these passwords has been set, a prompt for it appears on the screen 
whenever the computer is turned on. The computer does not start until the 
password is entered.
Power-on password
A power-on password (POP) protects the system from being powered on by 
an unauthorized person. The password must be entered before an operating 
system can be booted.
Hard-disk password
There are two hard-disk passwords (HDPs):
+ User HDP - for the user
+ Master HDP - for the system administrator, who can use it to get access to 
the hard disk drive even if the user has changed the user HDP
Attention: If the user HDP has been forgotten, check whether a master HDP 
has been set. If it has, it can be used for access to the hard disk drive. If 
no master HDP is available, neither Lenovo nor Lenov authorized service 
technicians provide any services to reset either the user or the master HDP, or 
to recover data from the hard disk drive. The hard disk drive can be replaced 
for a scheduled fee.
Supervisor password
A supervisor password protects the system information stored in the BIOS. The 
user must enter the supervisor password to get access to the BIOS and change 
the system configuration.
Attention: If you forget the password, there is no service procedure to reset 
the password. The system board must be replaced for a scheduled fee. 
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							25
Related service information
Power management
Note: Power management modes are not supported for an APM operating 
system.
To reduce power consumption, the computer has two power management 
modes: screen blank and sleep (standby).
Screen blank state
If the time set on the “Turn off monitor” timer in the operating system expires, 
the LCD backlight turns off. You can also turn off the LCD backlight by   
pressing 
.
To end screen blank state and resume normal operation, press .
Putting the computer to sleep or shutting it down
When you have finished working with your computer, you can put it to sleep or 
shut it down.
Putting your computer to sleep
If you will be away from your computer for only a short time, put the co\
mputer to 
sleep.When the computer is in sleep mode, you can quickly wake it to res\
ume 
use, bypassing the startup process.To put the computer to sleep, do one of the 
following:Close the display lid.
•  Close the display lid.
•  Press the Power button.
•  Move the cursor to the lower-left corner, and then select the Start button. 
Select  Power 
 → Sleep .
Note:  Put your computer to sleep before you move it. Moving your computer 
while the hard disk drive is spinning can damage the hard disk, causing loss of 
data.
To wake the computer, do one of the following:
•  Press any key on the keyboard.)
•  Press the Power button
•  Press the Windows button. 
						

							26
Shutting down the computer
f you are not going to use your computer for a long time, shut it down.To shut 
down the computer, do one of the following:
• Move the cursor to the lower-left corner, and then select the Start button. 
Select  Power 
 → Shut down .
• Right-click the Start button in the lower-left corner and select Shut do\
wn or 
sign out → Shut down.
Lenovo Edge 2 15 Hardware Maintenance Manual