CTI Products EXB-IP Ethernet System Extender - Manual (Page 49)

CTI Products, Inc. EXB-IP User Guide
Appendix E - Troubleshooting 49
Table E5
If the ACT LED (on local
EXB) . . .
REASON CORRECTIVE ACTION
Occasionally blinks on, then
off.
Normal operation indicating a message
packet has passed through the router
module of the EXB.
Go to next Table.
Does not illuminate when
“RSVC” button on remote
EXB is pressed.
1. Router Service Pin message from
remote EXB is not reaching the local
EXB.
2. Router Service Pin message from
remote EXB is not passing through
the local router module.
1a. Verify that “ACT” and “ERR” LED’s on
remote EXB flash once. If not, return
remote module for evaluation/repair.
b. Verify that “ETH TX” LED flashes on the
remote EXB and that “ETH RX” LED
flashes on the local EXB.
2a. Place the remote router in Repeater mode
and verify that the local “ACT” LED
illuminates when “RSVC” button on
remote EXB is pressed.
b. If ‘2a’ is ok, re-program the router in the
local EXB.
c. If ‘2a’ is not ok, swap either the local or
remote EXB with a known-good-module
to determine the faulty module.
Does not illuminate when
other modules on the local
MCN network are
transmitting messages.
1. Message packets from modules on the
local MCN network are not passing
through the router in the local EXB.
1a. Verify the connection between the local
EXB and other modules on the MCN
network.
b. Place the router in the local EXB in
Repeater mode and verify that its “ACT”
LED illuminates when modules on the
local MCN network are transmitting
messages.
c. If ‘1b’ is ok, re-program the router in the
local EXB.
d. If ‘1b’ is not ok, return the local EXB
module for evaluation/repair.
Does not illuminate when
modules on a remote
MCN network are
transmitting messages.
1. Message packets from modules on a
remote MCN network are not passing
through the router in the remote
EXB.
2. Message packets from modules on a
remote MCN network are not
reaching the local EXB.
3. Message packets from modules on
remote MCN network are not passing
through the router in the local EXB.
1a. Verify the connection between the remote
EXB and other modules on the remote
MCN network.
b. Verify that “ACT” LED on remote EXB
illuminates when other modules on the
remote MCN network are transmitting
messages.
c. Place the router in the remote EXB in
Repeater mode and verify that its “ACT”
LED illuminates when modules on its
remote MCN network are transmitting
messages.
d. If ‘1c’ is ok, re-program the router in the
remote EXB.
e. If ‘1c’ is not ok, return module for
evaluation/repair.
2. See this Table above and verify step “ACT
LED… Does not illuminate when RSVC
button on remote EXB is pressed”.
3. See this Table above and verify step “ACT
LED… Does not illuminate”. when
“RSVC” button on remote EXB is
pressed”.