Flowchart 2.2—No Power, Part - HP Compaq NX4820 Maintenance And Service Manual

Troubleshooting
Flowchart 2.2—No Power, Part 1
No power
(power LED
is off).
Remove from
docking device
(if applicable).
Power up
on battery
power?
Y
Power up
on AC
power?
Y
Power up in
docking
device?
N
1. Reseat the power cables in the docking
device and at the AC outlet.
2. Ensure the AC power source is active.
3. Ensure that the power strip is working.
Done
2–10
N
Reset
power.*
N
Reset
power.*
Y
Done
Y
Power up
in docking
device?
Power up
on battery
power?
Y
Power up
on AC power?
Y
*NOTES
1. On select models, there is a separate
reset button.
2. On select models, the computer can be
reset using the standby switch and
either the lid switch or the main power
switch.
N
Go to
"Flowchart
2.8—Nonfunction-
ing Docking Device
(if applicable)."
Maintenance and Service Guide
N
Go to
"Flowchart
2.3—No Power,
Part 2."
N
Go to
"Flowchart
2.4—No Power,
Part 3."