Specifications

Chapter 2 Installation and Setup LRS-24 Installation and Operation Manual
2-28 Initial Operation and Basic Checks
• I/O Module(s): Refer to the Installation and Operation Manual of the I/O
modules.
If LRS-24 does not show normal indications, see Chapter 5, Troubleshooting and
Diagnostics.
Power Off
➤ To turn off LRS-24 (CM-1):
1. If an external phantom feed voltage source is connected to LRS-24, turn off
that source (for example, the LRS-PS-FEED).
2. Set the ON/OFF switch(es) of the PS module(s) to OFF.
3. Disconnect the DC power, if applicable.
Troubleshooting
If a malfunction occurs in one or more of the links served by a module installed in
LRS-24, perform the following preliminary checks:
• If the problem affects all the links:
− Check that all the indicators on the panels of the PS modules are green.
− If any indicator is red, replace the corresponding PS module.
• Check that all the modules are properly installed.
• Check that all the cable connections are made in accordance with the
installation plan.
• Check that all the communication equipment on the link is operating properly.
• Check for proper configuration of the local and remote equipment.
If these checks do not correct the problem, use a supervision terminal connected
to the MANAGEMENT RS-232 port of the CM-1 module to identify the fault and
replace the corresponding module, see Chapter 5, Troubleshooting and
Diagnostics.
LRS-24 with CM-2 Module
Power On
➤ To turn on LRS-24 (CM-2):
1. Set the ON/OFF switches on the panels of the LRSI-PSP** modules to ON.
2. Supply the DC power, if applicable.
➤ To supply external phantom feed voltages:
1. Turn on LRS-24.
2. Turn on the source, i.e. LRS-PS-FEED.
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