Ericsson LBI-39076B system manual Maintenance

MAINTENANCE LBI-39076B

4.Each GTI in 1st Group (Modify 1st Group):

∙(MASTR II & IIe applications only) - Add a jumper between pins 2 and 3 of the Power/Audio plug on the back panel of the GTI (see Figure 45).

∙Disconnect the Power/Audio plug (you will need a pair of pliers to pull the plug out of the recessed connector) and Phone plug from the back panel of the GTI unit.

∙Remove the GTI unit from the cabinet, and remove the top cover.

∙If the Main Board is Revision A, replace with a Revision D or E Main Board.

∙Replace the GTI DSP software on the Main Board with V2.03 GTI DSP software.

∙Replace the GTI 552 software on the Main Board with V2.3 GTI 552 software.

∙Replace the GTI Main software on the Processor Board with V2.14 GTI Main software.

∙Re-attach the top cover, and re-install in cabinet (don’t forget to fasten rear supports).

∙Re-connect the Power/Audio plug and Phone plug to the back panel of the GTI unit (absolutely DO NOT reconnect the PCM Data Bus at this time).

∙(MASTR II & IIe applications only) - Remove the jumper between pins 2 and 3 of the Power/Audio plug on the back panel of the GTI (see Figure 45).

∙Repeat for each GTI unit in the first group.

5.System Manager (Disable All):

∙Using System Manager screen 10, panel 1:4, reconfigure the “Interconnect” field to “N” for each radio channel.

∙Using System Manager screen 14, reconfigure the “Line Active” field to “N” for each line number.

6.Master GTI (Modify Master GTI):

∙(MASTR II & IIe applications only) - Add a jumper between pins 2 and 3 of the Power/Audio plug on the back panel of the GTI (see Figure 45).

∙Disconnect the Power/Audio plug (you will need a pair of pliers to pull the plug out of the recessed

connector), Phone plug, PCM Data Bus plugs, and two Site Controller data link plugs from the back panel of the Master GTI unit.

∙Remove the Master GTI unit from the cabinet, and remove the top cover.

∙If the Main Board is Revision A, replace with a Revision D or E Main Board.

∙Replace the GTI DSP software on the Main Board with V2.03 GTI DSP software.

∙Replace the GTI 552 software on the Main Board with V2.3 GTI 552 software.

∙Temporarily remove the GTI Interface Board from over the Processor Board.

∙Replace the GTI Main software on the Processor Board with V2.14 GTI Main software.

∙Re-install the GTI Interface Board over the Processor Board.

∙Replace the GTI Master software on the GTI Interface Board with V1.04 GTI Master software.

∙Re-attach the top cover, and re-install in cabinet (don’t forget to fasten rear supports).

∙Re-connect the Power/Audio plug, Phone plug, PCM Data Bus plugs, and two Site Controller data link plugs to the back panel of the Master GTI unit.

∙(MASTR II & IIe applications only) - Remove the jumper between pins 2 and 3 of the Power/Audio plug on the back panel of the GTI (see Figure 45).

7.Each GTI in 1st Group (Re-connect 1st Group):

∙Re-connect the PCM Data Bus plugs to the back panel of each GTI unit in the first group (must temporarily disconnect the segments of the bus).

8.Each GTI in 2nd Group (Disconnect 2nd Group):

∙Disconnect the PCM Data Bus plugs from the back panel of each GTI unit in the second group, but re- connect the segments to maintain bus continuity end-to-end.

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