SENA PS400 - Manual (Page 66)

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Appendix C: Troubleshooting
C.1 Power/LED status troubleshooting
Problem Cause Action
Power LED does
not light up Power cable is not
connected Check power connection
Ethernet cable is not
connected Check Ethernet cable connection Link LED does not
light up
Invalid Ethernet cable is
used There are two types of Ethernet cables: Straight-through cable
and crossover cable. If you are using an Ethernet hub, use
straight-through cable. If direct connection between the
HelloDevice Pro Series and remote host is used, use crossover
cable instead.
ACT LED does not
blink Invalid IP configuration Check IP configuration parameters
C.2 Serial console troubleshooting
Problem Cause Action
Invalid serial cable Be sure to use a serial console cable (null-modem cable) for
serial console Serial console is not
connected
Invalid serial port
configuration of terminal
emulation program Check serial port configuration of terminal emulation program:
9600 bps, 8 Data bits, No parity, 1 stop bit, Hardware flow
control
Serial console is
halted for few
seconds periodically IP mode is DHCP or
PPPoE, but IP is not
assigned If IP mode is set to DHCP or PPPoE but IP is not actually
assigned because of DHCP server or PPPoE server failure,
serial console is halted for few seconds at every 20 seconds.
Change IP mode to the static IP mode
Cannot login to
console Invalid username and/or
password Use valid username and password. If username and/or
password are lost, perform factory default reset using factory
reset switch. Factory default value of username and password
are both admin
C.3 Remote console troubleshooting
Problem Cause Action
The HelloDevice Pro
Series is not assigned
valid IP address Use serial console to assign valid IP address to the HelloDevice
Pro Series Cannot connect to
the HelloDevice Pro
Serie s using telnet
The HelloDevice Pro
Series is configured to
reject IP address of the
PC Change the remote host access control parameter using serial
console to allow the IP address of the PC