1070 Backup Battery - Lenovo ThinkPad X220 4287 Hardware Maintenance Manual

Lenovo thinkpad x220 4287: reference guide
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Table 14. Removal steps of PCI Express Mini Card for wireless LAN/WiMAX (continued)
When installing:
• In models with a wireless LAN card that has two antenna connectors, plug the gray cable into the jack labeled
MAIN or M on the card, and the black cable into the jack labeled AUX or A. If the computer you are servicing has
three cables, put the white cable in the cable protection tube.
• In models with a wireless LAN card that has three antenna connector, plug the gray cable (MAIN) into the jack
labeled TR1, the white cable (third) into the jack labeled RO or TR3, and the black cable (AUX) into the jack
labeled TR2 on the card.

1070 Backup battery

DANGER
Use only the battery specified in the parts list for your computer. Any other battery could ignite
or explode.
For access, remove these FRUs in order:
"1010 Battery pack" on page 63
"1040 Keyboard" on page 67
"1050 Palm rest or palm rest with a fingerprint reader" on page 69
Table 15. Removal steps of backup battery
.
Chapter 8
Removing and replacing a FRU
73

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