Lenovo Yoga 2 Service Manual

							27
Lenovo Yoga 2 Pro (13″)
Lenovo Yoga 2 Pro (13″)
This chapter presents the following product-specific service references and product-specific parts information:
• “Specifications” on page 27
• “Status indicators” on page 29
• “Fn key combinations” on page 30
• “FRU replacement notices” on page 31
• “Removing and replacing an FRU” on page 32
• “Locations” on page 58
• “Parts list” on page 60
Specifications
The following table lists the specifications of the Lenovo Yoga 2 Pro (13″):
Table 1. Specifications
FeatureDescription
ProcessorView the system properties of your computer.You can do this as follows: Open the Control Panel, and then select System.Bus architecture• PCIe 2.0  DDR3L 1666MHz  HDMI 1.4 EDP 5.4G/2.7G SATA 3.0 LPC 1.1 USB 2.0 USB 3.0 SMBus HDA SPI I2CGraphic Chipset • Intel HSW GT2
Display•  13.3 inch, QHD+-3200 x 1800/IPS (wide viewing angle), 350 nit•  13.3 inch, FullHD-1920 x 1080/IPS (wide viewing angle), 330 nit (typ, w/o touch panel); 290 nit (typ w/ touch panel)Standard memory•  DDR3L-1600MHz (max 8 GB)
CMOS• 256 bytesSSD• 4 GB, 128 GB, 256 GB or 512 GBOptical drive • 2.5 inch External 9.5 mm (on select models)I/O port • Combo audio jack × 1 • HDMI port × 1• USB 2.0 port × 1, USB 3.0 port × 1• 2 in 1 slot × 1 
						

							28
Lenovo Yoga 2 Pro (13″) Hardware Maintenance Manual
Table 1. Specifications (continued)
FeatureDescription
Audio• 1/8" Combo audio jack• Integrated Speakers Stereo × 2• Built-in microphone × 2PCI Express Mini Card slot• 1 slot
Bluetooth wireless • Combined in combo card
Keyboard• 6-Row, Lenovo KeyboardTouch pad • Multi-touch typeIntegrated camera• 1.0 Mega or 720P HD
Battery• 4 cells, 54 WhAC adapter• 20 V, 65 WPre-installed operating system • Windows 8.1 
						

							29
Lenovo Yoga 2 Pro (13″)
Status indicators
The system status indicators below show the computer status:
12
Table 2. Status indicators
IndicatorIndicator statusMeaning
Battery status indicator
On (solid white)The battery has more than 20% charge.
Solid amberThe battery has between 5% and 20% charge.Fast blinking amberThe battery has less than 5% charge.
Slow blinking amberThe battery is being charged. When battery charge reaches 20%, the blinking color changes to white.
Slow blinking white
The battery has between 20% and 80% charge and is still charging. When the battery reaches 80% charge the light will stop blinking, but charging will continue until the battery is fully charged.
Power status 
indicator 
On (solid white)The computer is powered on.BlinkingThe computer is in sleep mode.OffThe computer is powered off. 
						

							30
Lenovo Yoga 2 Pro (13″) Hardware Maintenance Manual
Fn key combinations
The following table describes the functions of Fn key combinations.
Table 3. Function key combinations
 :Mutes/unmutes the sound.
:Decreases the volume level.
:Increases the volume level.
:Closes the currently active window.
:Refreshes the desktop or the currently active window.
:Enables/disables the touchpad.
:Enables/disables Airplane  mode.
:Displays all currently active apps.
:Turns on/off the backlight of the LCD screen.
:Toggles the display between the computer and an external device.
:Decreases display brightness.
:Increases display brightness. 
						

							31
Lenovo Yoga 2 Pro (13″)
FRU replacement notices
This section presents notices related to removing and replacing parts. Read this section carefully before replacing any FRU.
Screw notices 
Loose screws can cause a reliability problem. In the Lenovo computer, this problem is addressed with special nylon-coated screws that have the following characteristics:
• They maintain tight connections.
• They do not easily come loose, even with shock or vibration.
• They are harder to tighten.
Do the following when you service this machine: 
• Keep the screw kit in your tool bag.
• Carefully remove screws for reuse when replacing FRUs.
• Use a torque screwdriver if you have one.
Tighten screws as follows:
• Plastic to plastic
 Turn an additional 90° after the screw head touches the surface of the plastic part:more than 90°
(Cross-section)
• Logic card to plastic 
 Turn an additional 180° after the screw head touches the surface of the logic card: more than 180°
(Cross-section)
• Torque driver 
  If you have a torque screwdriver , refer to the “Torque” column for each step.
• Make sure that you use the correct screws. If you have a torque screwdri\
ver, tighten  all  screws  firmly  to  the  torque  shown  in  the  table. Carefully remove screws for reuse when replacing FRUs. Make sure that all screws are tightened firmly.
• Ensure torque screwdrivers are calibrated correctly following country specifications. 
						

							32
Lenovo Yoga 2 Pro (13″) Hardware Maintenance Manual
Removing and replacing an FRU
This  section  presents  exploded  figures  with  the  instructions  to  indicate  how  to remove and replace the FRU. Make sure to observe the following general rules:
1. Do not attempt to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts.
2. Before replacing any FRU, review “FRU replacement notices” on page 31.
3. Begin by removing any FRUs that have to be removed before the failing FRU. Any of such FRUs are listed at the top of the page. Remove them in the order in which they are listed.
4.  Follow the correct sequence in the steps to remove the FRU, as given in the figures by the numbers in square callouts.
5. When turning a screw to replace an FRU, turn it in the direction as given by the arrow in the figure.
6. When removing the FRU, move it in the direction as given by the arrow in the figure.
7. To put the new FRU in place, reverse the removal procedures and follow any of the notes that pertain to replacement. For information about connecting and arranging internal cables, see “Locations” on page 58.
8.  When replacing an FRU, use the correct screw as shown in the procedures.
 DANGER
Before	 removing	 any	FRU,	 turn	off	the	 computer,	 unplug	all	power	 cords	from	
electrical	 outlets,	remove	the	battery	 pack,	and	then	 disconnect	 any	of	the 	
interconnecting	cables.
Attention:  After replacing an FRU, do not turn on the computer until you have made sure that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening  for  rattling  sounds.  Metallic  parts  or  metal  flakes  can  cause  electrical short circuits.
Attention: The system board is sensitive to, and can be damaged by, electrostatic discharge. Before touching it, establish personal grounding by touching a ground point with one hand or using an electrostatic discharge (ESD) strap (P/N 6405959) to remove potential shock reasons. 
						

							33
Lenovo Yoga 2 Pro (13″)
1010 Base cover
Figure 1. Removal steps of base cover
Remove the screws 1. Then remove the base cover 2.
1
1
1
1
1
1
1
1
1
1
1
2
StepScrew (quantity)ColorTorque
1M2 × 5 mm, flat-head, nylok-coated (11) Lower to UpperSilver1.85+/-0.15 kgf*cm 
						

							34
Lenovo Yoga 2 Pro (13″) Hardware Maintenance Manual
Note: Applying labels to the base cover
The new base cover FRU is shipped with a kit containing labels of several 
kinds. When you replace the base cover, you need to apply the following 
labels: 
The following labels need to be peeled off from the old base cover and put on 
the new base cover. 
a win8 OS label
b Rating label(ww or China)
c Rating label print
d KCC labe
e Indonesia D side label
f BRAZIL BT WL labelg BT WL label FOR US/CA/TW/BRAZIL/INDONESIA/ISRAEL label
h SIRIM BT label
i SIRIM WL label
j SN label
For some models, you also need to apply one or two FCC labels. Check the 
old base cover; if it has one or two FCC labels, find duplicates of them in the 
label kit and apply them to the new base cover. 
For the location of each label, refer to the following figure:
 
bac
defj
g
hi 
						

							35
Lenovo Yoga 2 Pro (13″)
1020 Battery pack
For access, remove this FRU:
• “1010 Base cover” on page 33
 DANGER
Only	use	the	battery	 specified	 in	the	 parts	 list	for	your	 computer.	 Any	other	 battery	
could	ignite	or	explode.	
Figure 2. Removal steps of battery pack
Unplug the battery connector 1 and remove the screws 2. Then remove the battery pack 3.
1
22
2
2
2
3
StepScrew (quantity)ColorTorque
2M2 × 3.5 mm, flat-head, nylok-coated (5) Bty to UpperBlack1.85+/-0.15 kgf*cm
When installing: Make sure that the battery connector is attached firmly. 
						

							36
Lenovo Yoga 2 Pro (13″) Hardware Maintenance Manual
1030 LCD unit
For access, remove these FRUs in order:
• “1010 Base cover” on page 33
• “1020 Battery pack” on page 35
Figure 3. Removal steps of LCD unit
Remove the SSD cable in the direction shown by arrows 1.
1
Unplug touch cable connector and LCD cable in the direction shown by  arrows 2. Remove the screws 3.
2
2
3
3
StepScrew (quantity)ColorTorque
3M2 × 4.5 mm, flat-head, nylok-coated (4) Hinge to UpperBlack1.85+/-0.15 kgf*cm