N5200 & 1U4500 simple diagnosis flowchart 2/2 9/19/2008
N5200 & 1U4500 simple diagnosis flowchart
7. Admin login OK?
1. Without any HDD installed,
attach the power cord and
connect LAN cable to WAN
port. And then power on the
NAS.
Y
NAS is OK
N
Set the IP address
of PC or NB as
192.168.1.111, and
then login NAS
4. LCD stops
at [Self Testing...] for
more than 1 min?
Y
Firmware corrupted
(DOM is bad)
Y
3. Power LED
glows blue and system beeps
right after power button
pressed?
MB is bad
N
2. System fan and
PSU fan start rotating, and
LCD lights up?
Y
Power
supply unit
is bad
N
5. LCD starts
rotating NAS info after
2 min?
N
N
6. Press reset button for
5 sec to load factory
default (2 min to reboot)
Y
Firmware corrupted
(DOM is bad)
or
MB is bad
N