1120 Main Board - Lenovo YOGA BOOK YB1-X90L Hardware Maintenance Manual

1120 Main Board

Important notices for handling the main board:
When handling the main board, bear the following in mind.
• Be careful not to drop the main board on a bench top that has a hard
surface, such as metal, wood, or composite.
• Avoid rough handling of any kind.
• Throughout the process, make sure not to drop or stack the main board.
• If you put the main board down, make sure to put it only on a padded
surface such as an ESD mat or conductive corrugated material.
For access, remove these FRUs in order:
• "1010 Keyboard Assembly" on page 27
• "1020 Battery" on page 29
• "1030 D‐cover Hinge Stand" on page 32
• "1040 A‐cover and Hinge" on page 33
• "1050 Speaker" on page 36
• "1060 USB FPC" on page 39
• "1070 Sub Board" on page 41
• "1080 Camera" on page 44
• "1090 EP FPC" on page 45
• "1100 SK FPC" on page 46
• "1110 PWRK FPC" on page 48
Figure 12. Removal steps of main board
Disconnect the ANT FPC and main board interface. Pull the FPC from the
interface.
Lenovo YOGA BOOK
51