Appendix c: troubleshooting, C.1 power/led status troubleshooting, C.2 serial console troubleshooting – Senatek HELLODEVICE LITE SERIES LS100 User Manual

Page 44: C.3 remote console troubleshooting

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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 LS100
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

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 not
connected

Invalid Console/Data
switch position

Be sure that Console/Data switch position is Console side.

Serial console is
halted for few
seconds periodically

IP mode is DHCP, but
IP is not assigned

If IP mode is set to DHCP but IP is not actually assigned
because of DHCP 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 LS100 is not
assigned valid IP
address

Use serial console to assign valid IP address to the LS100

Cannot connect to
the LS100 using
telnet

Someone is using serial
console

Exit serial console and retry telnet connection

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