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Dell U4025QW Service Manual page 22

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Problem
What you experience
No charging
No charging
when using
Thunderbolt
TM
4 connection
to computer,
laptop, and so
on
Intermittent
Intermittent charging
charging
when using
Thunderbolt
TM
4 connection to
computer,
laptop, and so
on
No network
Network dropped or
connection
Intermittent
6. Trouble Shooting Instructions
Possible solutions
• Verify if the device can support one of
the 5 V/9 V/15 V/20 V/28 V charging
pro les.
• Verify if the Notebook requires a >EPR
140W power adapter.
• If the Notebook requires a >EPR 140W
power adaptor, it may not charge with
the Thunderbolt
• Ensure that you use only the Dell
approved adapter or the adapter that
comes with the product.
• Ensure that the Thunderbolt
not damaged.
• Check if the maximum power
consumption of the device is over EPR
140 W.
• Ensure that you use only the Dell
approved adapter or the adapter that
comes with the product.
• Ensure that the Thunderbolt
not damaged.
• Do not toggle O /On the power button
when the network is connected, keeps
the power button On.
TM
4 connection.
TM
4 cable is
TM
4 cable is

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