Lenovo ThinkPad W520 Hardware Maintenance Manual - Page 91

Backup battery, or explode. - bluetooth

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Removal steps of Bluetooth daughter card 1 2 Step 1 Screw (quantity) M2 × 3 mm, wafer-head, nylon-coated (1) Color Silver Torque 0.181 Nm (1.85 kgfcm) When installing: Make sure that the connector is attached firmly. 1120 Backup battery For access, remove these FRUs in order: • "1010 Battery pack" on page 66 • "1030 DIMM slot cover" on page 68 • "1060 Keyboard" on page 72 • "1100 Keyboard bezel assembly" on page 82 Removal steps of backup battery DANGER Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode. Chapter 9. Removing and replacing a FRU 85

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Removal steps of Bluetooth daughter card
2
1
Step
Screw (quantity)
Color
Torque
1
M2 × 3 mm, wafer-head, nylon-coated (1)
Silver
0.181 Nm
(1.85 kgfcm)
When installing:
Make sure that the connector is attached firmly.
1120 Backup battery
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 66
•
“1030 DIMM slot cover” on page 68
•
“1060 Keyboard” on page 72
•
“1100 Keyboard bezel assembly” on page 82
Removal steps of backup battery
DANGER
Use only the battery specified in the parts list for your computer. Any other battery could ignite
or explode.
Chapter 9
.
Removing and replacing a FRU
85