Step Size (Quan-
tity) Head &
Color Torque
1 M2.5 x 3.5L
(3) Flat head,
black 1.6 kgf-cm
Note: Make sure you use the correct screw for replacement.
CD-ROM ASM
To remove the CD-ROM ASM:
1. Remove the four screws securing the CD-ROM ASM.
2. Carefully slide out the CD-ROM ASM to remove.
Step Size (Quan-
tity) Head &
Color Torque
1 M2.5x 4L (4) Flat head,
silver 1.6 kgf-cm
Note: Make sure you use the correct screw for replacement.
ThinkPad 390/i Series 1700 51