Lenovo L420 Laptop User Manual


 
Table 18. Removal steps of SIM slot cover (continued)
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Some models you are servicing might have the SIM card that the customer has installed.
If the computer you are servicing has the SIM card, remove it before you start the servicing.
After you nish the servicing, make sure that you insert the card back into the slot rmly.
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70 Hardware Maintenance Manual