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Table 30. Removal steps of system board assembly
For ThinkPad L520 models:
1
1
1
1
Step Screw (quantity) Color
Torque
1
M2 × 5 mm, at-head, nylon-coated (4)
Black 0.181 Nm
(1.85 kgfcm)
For ThinkPad L420 and L421 models:
1
1
Step Screw (quantity) Color
Torque
1
M2 × 5 mm, at-head, nylon-coated (2)
Black 0.181 Nm
(1.85 kgfcm)
Chapter 8. Removing and replacing a FRU 97