Lenovo Yoga 3 Service Manual

Lenovo YOGA 3 Pro-1370
Har\fware 
Main\benance 
Manual 

Notes:
•	Before	using	this	information	and	the	product	it	supports,	be	sure	to	read	the	general	information	under	
“Notices”	on	page	60.
First Edition (August, 2014)
© Copyright Lenovo 2014. 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.
© 2014 Lenovo 

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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...

iv
About this manual
This  manual  contains  service  and  reference  information  for  the  following 
Lenovo product:Lenovo YOGA 3 Pro-1370
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...

1
Safety information
Safety information
This  chapter  presents  the  following  safety  information  that  you  need  to  get 
familiar with before you service a Lenovo YOGA 3 Pro-1370 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” on page 6
•  “Grounding requirements” on page 6
•  “Safety notices: multilingual translations” on page 7
•  “Laser compliance statement” on page...

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Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual
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...

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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...

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Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual
• 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...

5
About this manual
Safety inspection guide
The  purpose  of  this  inspection  guide  is  to  assist  you  in  identifying  potential 
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...

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Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual
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...