Specifications

LRS-24 Installation and Operation Manual Chapter 2 Installation and Setup

Initial Operation and Basic Checks 2-29

Normal Indications

• PS Module(s): All the indicators on the panel(s) of the PS module(s) must turn

green to indicate proper operation.

• CM-2 Module: The POWER indicator of the module must light up. The TD

and RD indicators may flash (or light steadily) when a management session is

in progress.

• On start-up, Mask says IGNORE ALARM FROM REMOTE MANAGEMENT.

The default is MASK ON. You must change configuration to MASK OFF.

• Normally, the STAT/ADD display shows the two least significant digits of the

management number assigned to LRS-24. For normal startup, a rotating red

circle is displayed. However, if a problem is detected during the power-up

self-test, you will see a flashing error code (E1 through E9), see Chapter 5

Troubleshooting and Diagnostics.

• I/O Module(s): Refer to the Installation and Operation Manual of the

corresponding module.

Power Off

➤ To turn off LRS-24 with CM-2:

1. If an external phantom feed voltage source is connected to LRS-24, turn off

that source (i.e. 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

In case a malfunction occurs, 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 installed properly.

• 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.

• If the error code E5 appears on the STAT/ADD display of the CM-2 module,

reconfigure the management parameters of the module in accordance with

Chapter 4. Any other code indicates a technical problem, and the

CM-2 module must be replaced.

• Check for proper configuration of the local and remote equipment.

• See Mask section (Defining Card Configuration / Defining I/O Module

Operational Parameters).

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