Lenovo T420 - Manual (Page 96)

1140 Modem daughter card (MDC)
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 63
• “1050 DIMM slot cover” on page 69
• “1080 Keyboard” on page 73
• “1120 Keyboard bezel assembly, FPC cable, and Bluethooth daughter card” on page 83
Removal steps of modem daughter card (MDC)
1
1
2
Step Screw (quantity) Color Torque
1 M2 × 3 mm, wafer-head, nylon-coated (2) Black 0.181 Nm
(1.85 kgfcm)
When installing: Make sure that the connector is attached firmly.
90 ThinkPad T420 and T420i Hardware Maintenance Manual