Lenovo 7449F9U User Manual - Page 139
When installing, Screw quantity, Color, Torque
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Table 26. Removal steps of DC-in connector, fan, digitizer pen case, and pen switch assembly (continued) Turn the system board over, and then disconnect the DC-in connector, the fan connector, and the pen switch connector from the system board. 12 14 13 When installing: Make sure that the DC-in connector, the fan connector, and the Pen switch connector are attached to the system board firmly. 17 16 15 18 19 Step 18 Screw (quantity) M2 × 3.5 mm, flat-head, nylon-coated (1) Color Silver Torque 0.181 Nm (1.85 kgfcm) Removing and replacing a FRU 131
Table 26. Removal steps of DC-in connector, fan, digitizer pen case, and pen switch
assembly (continued)
Turn the system board over, and then disconnect the DC-in connector, the fan
connector, and the pen switch connector from the system board.
12
13
14
When installing:
Make sure that the DC-in connector, the fan connector, and the
Pen switch connector are attached to the system board firmly.
15
16
17
18
19
Step
Screw (quantity)
Color
Torque
±18²
M2
×
3.5 mm, flat-head, nylon-coated (1)
Silver
0.181 Nm
(1.85 kgfcm)
Removing and replacing a FRU
131