Lenovo YOGA BOOK YB1-X90L Hardware Maintenance Manual page 39

Figure 4. Removal steps of A‐cover and hinge (continued)
Use a screwdriver to remove the 9 black screws from the hinge lock on the
D‐cover, as well as the 1 black screw from the silver Earphone‐SUS‐Frame‐R.
Remove the Earphone‐SUS‐Frame‐R.
Step Screw (quantity)
M1.4*4*1.9 (9)
1
M1.4*2.5 (1)
2
Remove the hinge and A‐cover components from the D‐cover.
Lenovo YOGA BOOK
Color Torque
Black 0.7N
Black 0.7N
35