Echelon MPR-50 Multi-Port Router - Manual (Page 40)

Troubleshooting Table
This troubleshooting table is intended to address abnormal operation only and does not
include errors reported on the Status LEDs. Refer to the LED Legends section in Chapter
2 for a description of the Status LED messages.
Symptom Troubleshooting Solutions
The Power LED is not on continuously. • Verify that the input voltage measured
at the MPR-50 power input connector is
within limits.
• Verify that the input power is connected
to terminals 1 and 2.
• Remove the earth ground connection
temporarily if it is connected.
A network tool does not receive a service pin
message when the Monitor’s Service button
is pressed.
• Verify that Service pin messages from
other devices can be received.
• Verify that the router inside the MPR-50,
in between the Monitor and the network
tool, has been commissioned properly by
the network tool or is in repeater mode.
• Verify that the network wiring is
functional by pressing the Service button
on any intervening routers, and on the
router inside the MPR-50, in between the
Monitor and the network tool.
• Verify that the proper transceiver types
are connected to a particular channel.
For instance, verify that a TP/FT-10
channel is not connected to the Router 1
– TP/XF-1250 port of the MPR-50, and
that a TP/XF-1250 channel is not
connected to Routers 2-5.
• Verify that the network channels are
properly terminated with either a single
or double termination, as required.
• If the configuration of Routers 1–5 is in
doubt, put it into repeater mode. Then
press the Service button on the Monitor.
The network tool returns error messages
when attempting to install Routers 1–5 and
the Monitor in a single operation.
• First commission only the router nearest
to the network tool. Then commission
the other routers and the Monitor at the
same time.
32 Troubleshooting