Main and auxiliary antennas
Remove the I/O board cable
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 30
“Remove the battery pack” on page 31
Step 1. Disconnect the I/O board cable (22 pin or 30 pin) from the system board and the I/O board. Then,
remove the I/O board cable (22 pin or 30 pin).
Figure 9. Remove the I/O board cable
Go to https://support.lenovo.com/partslookup to look up the Lenovo part numbers of the following
replacement parts:
I/O board cable (22 pin)
I/O board cable (30 pin)
Remove the I/O board
Make sure the following FRUs (or CRUs) have been removed.
“Remove the lower case” on page 30
Step 1. Disconnect the battery pack cable from the system board.
Attention: Use your fingernails to pull the connector to unplug it. Do not pull the cable.
34
Hardware Maintenance Manual
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