HP Compaq nw8440, Maintenance And Service Manual

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2–8 Maintenance and Service Guide
Troubleshooting
Flowchart 2.2—No Power, Part 1
1. Reset the power cables in the docking device
and at the AC outlet.
2. Be sure the AC power source is active.
3. Be sure that the power strip is working.
Done
Remove from
docking device
(if applicable).
Power up
on battery
power?
Power up
on AC
power?
Power up in
docking
device?
Power up
on battery
power?
Power up
in docking
device?
Done
Reset
power.*
Reset
power.*
Power up
on AC power?
N
Y
Y
N
N
Y
N
N
Y
Y
Y N
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.
*NOTES
Go to
“Flowchart
2.4—No Power,
Part 3.”
Go to
“Flowchart
2.3—No Power,
Part 2.”
Go to
“Flowchart
2.8—Nonfunctioning
Docking Device (if
applicable).”
No power
(power LED
is off).