Lenovo ThinkPad Hardware Maintenance Manual page 58

System board and keyboard subcard connectors （type B)
No.
Connector/feature
1 21
Thermal fan connectors (internal)
2
LCD cable connector (internal)
3
dc-in connector (internal)
4
HDMI connector (external)
5
Audio connector (external)
6 26
Keyboard sub-card cable
connector (internal)
7 14
P sensor connectors
8
Speaker connector (internal)
9
Coin-cell battery connector
(internal)
52
P1 Gen 4 and X1 Extreme Gen 4 Hardware Maintenance Manual
Internal cable required
Thermal fan assembly cable
LCD cable
dc-in cable
No
No
Keyboard sub-card cable
P sensor cable
Speaker assembly cable
Coin-cell battery cable
Cable connection
The thermal fan assembly comes
with two cables. Connect the
cables to these connectors.
Connect one end to the LCD panel
and the other end to this
connector.
Connect the dc-in cable to this
connector.
Connect a compatible digital audio
device or video monitor to this
connector.
Connect headphones or a headset
to this connector.
Connect Keyboard sub-card cable
to this connector.
The wireless WAN antenna
assembly comes with two P
sensor cables. Connect the P
sensor cables to these connectors.
Connect the speaker assembly
cable to this connector.
The coin-cell battery comes with a
cable. Connect the cable to this
connector.