Lenovo ThinkPad T420si Hardware Maintenance Manual - Page 97

Bluetooth daughter card (BDC-3.0), 1140 Bluetooth-wireless radio switch FPC

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Step 1 Screw (quantity) M2 × 3 mm, shoulder-socket head, nylon-coated (1) Color Silver Torque 0.181 Nm (1.85 kgfcm) 1130 Bluetooth daughter card (BDC-3.0) • "1010 Battery pack" on page 68 • "1030 Solid state drive (SSD) or hard disk drive (HDD)" on page 70 • "1080 Keyboard" on page 80 • "1100 Palm rest with fingerprint reader, smart card reader, and speaker" on page 84 Removal steps of BDC-3.0 1 2 Step 1 Screw (quantity) M2 × 4 mm, flat-head, nylon-coated (1) Color Black When installing: Make sure that the connector is attached firmly. 1140 Bluetooth-wireless radio switch FPC For access, remove these FRUs in order: • "1010 Battery pack" on page 68 • "1020 Serial Ultrabay Slim device or travel bezel" on page 69 • "1030 Solid state drive (SSD) or hard disk drive (HDD)" on page 70 • "1040 DIMM" on page 72 • "1050 PCI Express Mini Card for wireless LAN" on page 74 Torque 0.181 Nm (1.85 kgfcm) Chapter 8. Removing and replacing a FRU 91

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Step
Screw (quantity)
Color
Torque
1
M2 × 3 mm, shoulder-socket head, nylon-coated (1)
Silver
0.181 Nm
(1.85 kgfcm)
1130 Bluetooth daughter card (BDC-3.0)
•
“1010 Battery pack” on page 68
•
“1030 Solid state drive (SSD) or hard disk drive (HDD)” on page 70
•
“1080 Keyboard” on page 80
•
“1100 Palm rest with fingerprint reader, smart card reader, and speaker” on page 84
Removal steps of BDC-3.0
1
2
Step
Screw (quantity)
Color
Torque
1
M2 × 4 mm, flat-head, nylon-coated (1)
Black
0.181 Nm
(1.85 kgfcm)
When installing:
Make sure that the connector is attached firmly.
1140 Bluetooth-wireless radio switch FPC
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 68
•
“1020 Serial Ultrabay Slim device or travel bezel” on page 69
•
“1030 Solid state drive (SSD) or hard disk drive (HDD)” on page 70
•
“1040 DIMM” on page 72
•
“1050 PCI Express Mini Card for wireless LAN” on page 74
Chapter 8
.
Removing and replacing a FRU
91