Lenovo Edge 2 User Guide

Lenovo Edge 2 15
Hardware 
Maintenance 
Manual 

Notes:
•	Before	using	this	information	and	the	product	it	supports,	be	sure	to	read	the	general	information	under	
“Notices”	on	page	66.
First Edition (September. 2015)
© Copyright Lenovo 2015. All rights reserved.
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.
© 2015 Lenovo 

iii
Contents
About this manual ....................................... iv
Safety information ........................................ 1
General safety ................................................ 2
Electrical safety .............................................. 3
Safety inspection guide  .................................. 5
Handling devices that are sensitive to 
electrostatic discharge  .................................... 6
Grounding requirements  .................................6
Safety notices:...

iv
About this manual
This manual contains service and reference information for the following\
 
Lenovo product:Lenovo Edge 2 15
Use this manual to troubleshoot problems.
The manual is divided into the following sections:
•  The common sections provide general information, guidelines, and safety 
information required for servicing computers.
•  The product-specific section includes service, reference, and product-specific 
parts information.
Important:
This	 manual 	is	 intended	 only	for 	trained...

1
Safety information
Safety information
This chapter presents the following safety information that you need to get 
familiar with before you service a Lenovo Edge 2 15 computer:
• “General safety” on page 2
•  “Electrical safety” on page 3
•  “Safety inspection guide” on page 5
•  “Handling devices that are sensitive to electrostatic discharge” o\
n page 6
•  “Grounding requirements” on page 6
•  “Safety notices: multilingual translations” on page 7
•  “Laser compliance statement” on page 14 

2
General safety
Follow these rules below to ensure general safety:
• Observe a good housekeeping in the area where the machines are put 
during and after the maintenance.
•  When lifting any heavy object: 
1.  Make sure that you can stand safely without slipping.
2.  Distribute the weight of the object equally between your feet.
3.  Use a slow lifting force. Never move suddenly or twist when you attempt 
to lift it.
4.  Lift it by standing or pushing up with your leg muscles; this action could 
avoid...

3
About this manual
Electrical safety
Observe the following rules when working on electrical equipments.
Important:
Use	only	 approved 	tools	 and	test 	equipments.	 Some	hand	 tools	 have	handles 	
covered	 with	a	soft	 material	 that	does	 not	insulate	 you	when	 working	 with	live	
electrical	currents.
Many	 customers	 have	rubber	 floor	mats	near	their	 machines	 that	contain	 small	
conductive	 fibers	to	decrease	 electrostatic	 discharges.	Do	not	 use	 such	 kind	of	mat	
to	protect	yourself	from...

4
• Always look carefully for possible hazards in your work area. Examples of 
these hazards are moist floors, nongrounded power extension cables, power 
surges, and missing safety grounds. 
•  Do not touch live electrical circuits with the reflective surface of a plastic 
dental mirror. The surface is conductive; such touching can cause personal 
injury and machine damage.
•  Do not service the following parts with the power on when they are removed 
from their normal operating places in a machine: 
–...

5
About this manual
Safety inspection guide
The purpose of this inspection guide is to assist you in identifying pot\
ential 
unsafe conditions. As each machine was designed and built, required safety 
items were installed to protect users and service personnel from injury. This 
guide addresses only those items. You should use good judgment to identify 
potential safety hazards according to the attachment of non-Lenovo features or 
options not covered by this inspection guide.
If any unsafe conditions...

6
Handling devices that are sensitive to electrostatic discharge
Any computer part containing transistors or integrated circuits (ICs) should be 
considered sensitive to electrostatic discharge (ESD). ESD damage can occur 
when there is a difference in charge between objects. Protect against ESD 
damage by equalizing the charge so that the machine, the part, the work mat, 
and the person handling the part are all at the same charge. 
Notes:
1.	 Use	product-specific	 ESD	procedures	 when	they	exceed	 the...