HP Compaq nc4000 Series Maintenance And Service Manual page 37

Troubleshooting
Flowchart 2.2—No Power, Part 1
No power
(power LED
is off).
Remove from
docking station
(if applicable).
Power up
on battery
power?
Y
Power up
on AC
power?
Y
Power up
in docking
station?
N
1. Reseat the power cables in the docking
station and at the AC outlet.
2. Ensure the AC power source is active.
3. Ensure that the power strip is working.
Done
2–12
N
*Reset
power.
N
*Reset
power.
Y
Done
Y
Power up
in docking
station?
Power up
on battery
power?
Y
Power up
on AC
power?
Y
*NOTES:
1. On some models, there is a separate
reset button.
2. On some models, the notebook can be
reset using the Standby switch and
either the lid switch or the main power
switch.
N
Go to
Section 2.8,
Nonfunctioning
Docking Station.
Maintenance and Service Guide
N
Go to
Section 2.3,
No Power,
Part 2.
N
Go to
Section 2.4,
No Power,
Part 3.