Lenovo Yoga 8 Service Manual

							Lenovo B6000 / B8000
37
3.Detach the hinge frame at the right end and then turn the hinge frame 
clockwise around its left end so as to enable the main FPC to come out 
through the supporting frame at the left end. The hinge frame is removed 
from the main body of the tablet.
Figure 3-3 Removing the hinge frame with the main FPC at the left end 
						

							Lenovo B6000/B8000 Hardware Maintenance Manual
38
4.Remove the hinge pivot by pushing it on the right side.
Figure 3-4 Removing the hinge pivot 
						

							Lenovo B6000 / B8000
39 1040 Main camera
For access, remove this FRU:
• “1010 Rear cover ” on page 28
1.Di s con ne c t t h e  F PC  of t h e m ain  ca me ra  f ro m it s  con n ec to r on  th e  mai n P CBA  
using a guitar pick.
Figure 4-1 Disconnecting the main camera FPC 
						

							Lenovo B6000/B8000 Hardware Maintenance Manual
40
2.Detach the main camera from its seat using a thin flat blade or guitar pick 
from both the rear side and bottom.
Figure 4-2 Detaching the main camera 
						

							Lenovo B6000 / B8000
41 1050 Left speaker box
For access, remove the following FRUs:
• “1010 Rear cover ” on page 28
• “1020 Right speaker box” on page 32
• “1030 Hinge frame and pivot” on page 36
• “1040 Main camera” on page 39
1.Remove two screws   for fixing the left speaker box to the main body.
Figure 5-1. Screws fixing the left speaker box
2.Detach the left speaker box from its installation position.
3.Remove the left speaker box after the main PCBA is removed from the main 
body.
StepScrew (quantity)ColorTorque
Phillips flat-head, M1.4 × 3.8  (2) Black N/A
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Notes:
• The left speaker box, as well as the power switch, are connected to the 
main PCBA via FPCs and cannot be removed at this stage of the service 
procedure.
• Disconnect the left speaker box after removing the main PCBA from the 
front module of the tablet. Please refer to the operation task “1080 Main 
PCBA” on page 46.
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							Lenovo B6000/B8000 Hardware Maintenance Manual
421060 Main antenna
For access, remove this FRU:
• “1010 Rear cover ” on page 28
1.Remove two screws   for fixing the main antenna to the main body of the 
tablet.
Figure 6-1 Screws on the main antenna
2.Disconnect the RF cable (for B6000-H and B8000-H only) and antenna FPC 
from their connectors on the main PCBA after removing the main PCBA from 
the main body.
Notes:
The main antenna is connected to the main PCBA via a FPC, but depending 
on the product model, the main antenna may not be additionally connected 
to the main PCBA via any RF cable. Please check this conditon of the main 
antenna for different product models as follows:
– B6000-H and B8000-H: connected via a RF cable
– B6000-F and B8000-F: without RF cable
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							Lenovo B6000 / B8000
43
StepScrew (quantity)ColorTorque
Phillips flat-head, M1.4 × 1.5  (2) Black N/A
Notes:
• The connectors for connecting the RF cable and antenna FPC are located 
on the back side of the main PCBA. Therefore, the RF cable and antenna 
FPC cannot be disconnected from the main PCBA at this stage while the 
main PCBA is still seated on the main body.
• Please refer to the operation task “1080 Main PCBA” on page 46 for the 
description of corresponding steps for disconnecting the RF cable and 
antenna FPC.
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							Lenovo B6000/B8000 Hardware Maintenance Manual
441070 WiFi antenna
For access, remove this FRU:
• “1010 Rear cover ” on page 28
1.Remove the screw   for fixing the WiFi antenna to the main body.
Figure 7-1 Screw on the WiFi antenna
2.Remove the adhesive tapes for fixing the RF cable and WiFi antenna frame.
Figure 7-2 Removing the adhesive tape
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							Lenovo B6000 / B8000
45
3.Detach the WiFi antenna frame from its seating position using a thin flat 
blade.
Figure 7-3 WiFi antenna frame detached
4.Disconnect the RF cable from its connector on the main PCBA after removing 
the main PCBA from the main body of the tablet.
StepScrew (quantity)ColorTorque
Phillips flat-head, M1.4 × 1.5  (1) Black N/A
Notes:
• The connector for connecting the WiFi antenna RF cable is located on the 
back side of the main PCBA. Therefore, the RF cable cannot be 
disconnected from the main PCBA at this stage while the main PCBA is 
still seated on the main body.
• Please refer to the operation task “1080 Main PCBA” on page 46 for the 
step of disconnecting the RF cable.
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							Lenovo B6000/B8000 Hardware Maintenance Manual
461080 Main PCBA
For access, remove the following FRUs in order:
• “1010 Rear cover ” on page 28
• “1020 Right speaker box” on page 32
• “1030 Hinge frame and pivot” on page 36
• “1040 Main camera” on page 39
• “1050 Left speaker box” on page 41
• “1060 Main antenna” on page 42
• “1070 WiFi antenna” on page 44
1.Remove four screws   for fixing the main PCBA to the main body.
Figure 8-1 Remove four screws on the main PCBA
Important notices for handling PCB:
When handling PCB, bear the following in mind:
• Be careful not to drop the PCB onto a bench top that has a hard surface, 
such as surface made of metal, wood, or composite materials.
• Avoid rough handling of any kind.
• Make sure not to drop or stack the PCB in the whole process.
• Make sure to put the PCB only on surface covered with materials such as 
an ESD mat or conductive corrugated plate.
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