Ericsson LBI-39055 manual HIGH-LEVEL Tests, Test Audio PA Board #2 if installed, Completion

LBI-39055

❏Send operator headset mic audio to the LINE B output by typing the following command:

<F2> 2001 <Enter>

❏Speak into the headset's mic and verify the audio signal is now present on the LINE B balanced output. Maximum signal level is approximately 6 Vp-p.

❏Turn the operator headset mic-to-LINE B audio off by typing the following commands. The audio should turn off after the first command is entered:

<F2> 6330 <Enter>

<F2> 2000 <Enter>

❏Verify mic audio is no longer on the LINE B balanced output.

Successful completion of this tests verifies basic operation of the following:

∙operator headset mic input circuitry

∙Line A and B output circuitry

∙PC and Logic Board's ability to control the cross- point audio matrix switches on the Audio Matrix Board

4.Test Audio PA Board #2 (if installed)

If a second Audio PA Board is installed in the Audio

Tower, the following procedure can be used to test it:

❏Power-down the Audio Tower and swap the #1 board with the #2 board.

❏Power-up the Audio Tower.

❏Repeat steps 1, 2 and 3.

❏Power-down the Audio Tower and swap the #1 board with the #2 board.

❏Power-up the Audio Tower.

5.Completion

❏Remove all test connections and reconnect the RJ-11 modular plugs from the CEC/IMC to the

LINE A and LINE B modular jacks on the Audio PA Board (#1).

HIGH-LEVEL TESTS

The following high-level tests verify basic operational status of control data and audio interfaces between the C3 Maestro console and the CEC/IMC. The procedures assume all equipment has been interconnected and set-up in accordance with the previous instructions presented in this manual.

Control Data Link

The C3 Maestro console and the CIM within the CEC/IMC periodically poll each other over the control data link. If this link is not operating correctly the console will display a "Com Error: link down @xxxxx bps" error message on the PC's video display monitor. This link must be up (operating) before any dispatch operation can occur. For troubleshooting information, refer to the CEC/IMC Digital Audio Switch Installation, Set-Up and Troubleshooting maintenance manual, LBI-38938. The console-to-CIM link up/down status can also be viewed via the CEC/IMC Manager's (MOM PC's) "SYSTEM DISPLAY" screen.

Upon restoration of a failed console-to-CIM control data link a "Communications error condition cleared" message is displayed.

Audio Links

After determining the control data link is operating by the lack of an error message, audio link operation can be tested. To test, program a module with a test group and then place a call to and from a test radio set the same group. Also test the operation of all unselect speakers. Verify the console can sendand receive audio. If necessary, refer to the C3 Maestro console operator's manual. Refer to LBI-38938 for troubleshooting information.

If the console is is equipped with a Call Director, test Call Director patch operation by patching a radio to a telephone line. See the operator's manual for details.

Ericsson GE Mobile Communications Inc.

Mountain View Road ∙ Lynchburg, Virginia 24502 Printed in U.S.A.

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