CTI Products NCB/FL with Fiber Interface - Manual (Page 33)

CTI Products, Inc. NCB-EL/FL User Guide
Appendix D. Troubleshooting 30
Table D5
If the ACT LED (on local
NCB) . . .
REASON CORRECTIVE ACTION
Occasionally blinks on, then
off.
Normal operation indicating a message
packet has passed through the router
module of the NCB.
Go to next Table.
Does not illuminate when
“RSVC” button on remote
NCB is pressed.
1. L ON W ORKS Service Pin message from
remote NCB is not reaching the local
NCB.
2. L ON W ORKS Service Pin message from
remote NCB is not passing through the
local router module.
1a. Verify that “ACT” and “ERR” LED’s
on remote NCB flash once. If not,
return remote unit for
evaluation/repair.
b. Verify that “ETH TX” LED flashes on
the remote NCB and that “ETH RX”
LED flashes on the local NCB.
2a. Place the remote router in Repeater
mode and verify that the local “ACT”
LED illuminates when “RSVC” button
on remote NCB is pressed.
b. If ‘2a’ is ok, re-commission the local
NCB router.
c. If ‘2a’ is not ok, swap either the local
or remote unit with a known-good-unit
to determine the faulty unit.
Does not illuminate when
local L ON W ORKS nodes
are transmitting messages.
1. L ON W ORKS message packets from local
nodes are not passing through the local
router module.
1a. Verify the connection between the
local L ON W ORKS nodes and the local
NCB.
b. Place the local router in Repeater mode
and verify that its “ACT” LED
illuminates when local L
ON W ORKS
nodes are transmitting messages.
c. If ‘1b’ is ok, re-Commission the local
NCB.
d. If ‘1b’ is not ok, return the local NCB
unit for evaluation/repair.
Does not illuminate when
remote L ON W ORKS nodes
are transmitting messages.
1. L ON W ORKS message packets from
remote nodes are not passing through the
remote router module.
2. L ON W ORKS message packets from
remote nodes are not reaching the local
NCB.
3. L ON W ORKS message packets from
remote nodes are not passing through the
local router module.
1a. Verify the connection between the
remote L ON W ORKS nodes and the
remote NCB.
b. Verify that “ACT” LED on remote
NCB illuminates when remote
L
ON W ORKS nodes are transmitting
messages.
c. Place the remote router in Repeater
mode and verify that its “ACT” LED
illuminates when remote L
ON W ORKS
nodes are transmitting messages.
d. If ‘1c’ is ok, re-commission the remote
router.
e. If ‘1c’ is not ok, return unit for
evaluation/repair.
2. See this Table above and verify step
“ACT” LED “Does not illuminate
when “RSVC” button on remote NCB
is pressed”.
3. See this Table above and verify step
“ACT” LED “Does not illuminate
when “RSVC” button on remote NCB
is pressed”.