HP Compaq NX4820 Maintenance And Service Manual page 70

Troubleshooting
Flowchart 2.20—No Network/Modem
Connection
No network
or modem connec-
tion.
Network
or modem jack
active?
Y
Digital
line?
N
NIC/modem
configured
in OS?
Y
Disconnect all
power from
the computer
and open.
Reseat NIC/modem
(if applicable).
2–28
N
Replace jack
or have jack acti-
vated.
Y
Connect
to nondigital
line.
N
Reload
drivers and recon-
figure.
Network
or modem connec-
tion working?
N
Replace
NIC/modem
(if applicable).
Network
or modem connec-
tion working?
N
Replace
system
board.
Maintenance and Service Guide
Y
Done
Y
Done