Lenovo Yoga 8 Service Manual

							Lenovo B6000 / B8000
27
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 26.
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, while referring 
to figures provided in the procedure.
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 59.
8.When replacing an FRU, use the correct screw as shown in the procedures.
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.
Removing and replacing an FRU
DANGER
Before removing any FRU, turn off the computer, unplug all power cords 
from electrical outlets, and then disconnect any of the interconnecting 
cables.
Notes:
The two products covered by this manual, namely Lenovo B6000 and 
Lenovo B8000, are identical in structure and internal parts.
The illustrations used in this section come from Lenovo B6000-H. 
						

							Lenovo B6000/B8000 Hardware Maintenance Manual
281010 Rear cover
1.Peel off the label in the recess of the rear cover.
Figure 1-1. Peeling off the label on the rear cover
2.Remove three screws   in the recess as shown in the figure below.
Figure 1-2. Screws on the rear cover
a 
						

							Lenovo B6000 / B8000
29
3.Separate the top right corner of the rear cover from the main body of the 
tablet using a suction tool as shown in the figure below, and then move the 
suction tool to the left along the upper edge to unlock the entire upper edge 
from the main body.
Figure 1-3 Separating the rear cover using a suction tool 
						

							Lenovo B6000/B8000 Hardware Maintenance Manual
30
4.Hold the main body of the tablet with one hand and pull out the right edge 
of the rear cover from the main body using another hand.
5.Attach the suction tool to the center right area of the rear cover to separate 
this area from the main body and then move the suction tool to other two 
positions as shown in the figure below to unlock the entire central area of the 
rear cover.
Figure 1-4 Unlocking the central area of the rear cover
6.Unlock the left edge of the rear cover in the same way as described in step 4 
above. 
						

							Lenovo B6000 / B8000
31
7.Open the rear cover to get access to the inside position where the card slot 
area of the rear cover is glued to the internal surface and use a thin flat blade 
to disable the adhesion at this position.
8.Pull off the rear cover from the main body by applying reasonable force.
StepScrew (quantity)ColorTorque
M1.4 × 1.3, wide head (3) Black N/A
Notes:
• In order to ensure accurate relative positioning between the SIM card 
and Micro SD card recesses on the rear cover and the internal card slots, 
the recess area of the rear cover may be glued to the internal main body 
surface. This might place some difficulty for the disassembly task.
• The rear cover is also locked up to the tablet along the bottom edge (the 
edge between the two speakers of the tablet).
• When it is not possible to use any tool in removing the rear cover, 
reasonable force has to be applied to unlock the rear cover from the 
tablet.
a 
						

							Lenovo B6000/B8000 Hardware Maintenance Manual
321020 Right speaker box
For access, remove this FRU:
• “1010 Rear cover ” on page 28
1.Remove two screws  on the holder for fixing the right speaker box as 
shown below.
Figure 2-1 Screws on the holder of the speaker box
a 
						

							Lenovo B6000 / B8000
33
2.Unlock the speaker FPC connector using a guitar pick and then pull out the 
speaker FPC from the connector.
Figure 2-2 Disconnecting the speaker FPC 
						

							Lenovo B6000/B8000 Hardware Maintenance Manual
34
3.Pry off the holder next to the speaker box as shown below.
Figure 2-3 Prying off the holder 
						

							Lenovo B6000 / B8000
35
4.Remove the speaker box from its socket as shown below.
Figure 2-4 Removing the speaker box
StepScrew (quantity)ColorTorque
Phillips flat-head, M1.4 × 3.8  (2) Black N/A
a 
						

							Lenovo B6000/B8000 Hardware Maintenance Manual
361030 Hinge frame and pivot
For access, remove the following FRUs:
• “1010 Rear cover ” on page 28
• “1020 Right speaker box” on page 32
1.Disconnect the main FPC from its connector on the main PCBA using a guitar 
pick.
Figure 3-1 Disconnecting the main FPC
2.Slowly pull out the hinge pivot using a pair of tweezers until about half the 
pivot length moves out.
Figure 3-2 Pulling out the hinge pivot