SYSTEM RACK

4.Set one CIM for System Test "5"

(S5-Sections 1-3 open; Sections 2-4 closed). Place this module in any slot on Shelf 1.

5.Set the second CIM for System Test "6".

(S5-Sections 2-3 open; 1-4 closed). Place this module in any slot on Shelf 8.

6.Loop Primary Tx PCM to the Primary Rx PCM by connecting a cable (023-3039-842) from Shelf 1-J3 to Shelf 1-J4 (see Figure 4-5).

7.The CIMs display an "A" if the PCM bank is good. Press S2 to reset the CIM if "A" is not displayed.

a.A failure on the primary displays a "1" on one or both CIMs.

b.A failure on the secondary displays a "2" on one or both CIMs.

•Move the CIM on Shelf 8 to Shelf 7. Reset both CIMs if "A" is not displayed.

•Move the CIM on Shelf 7 to Shelf 6. Reset both CIMs if "A" is not displayed.

•Move the CIM on Shelf 6 to Shelf 5. Reset both CIMs if "A" is not displayed.

•Move the CIM on Shelf 5 to Shelf 4. Reset both CIMs if "A" is not displayed.

•Move the CIM on Shelf 4 to Shelf 3.

Reset both CIMs if "A" is not displayed.

•Move the CIM on Shelf 3 to Shelf 2. Reset both CIMs if "A" is not displayed.

3.After the PCM bank has proven good, force failures on both the primary and secondary as follows:

Primary

•Remove cables on Shelf 1, J5 and J6.

•A "1" on both CIMs indicates a Primary failure.

•Reconnect the cables.

Secondary

•Remove cables on Shelf 1, J23 and J24.

•A "2" on both CIMs indicates a Secondary failure.

•Reconnect the cables.

•Remove the cable from Shelf 1, J3 to J4.

4.Remove both CIMs from rack and patch cords from J1-J2.

VTM PCM Bank Verification

This requires the use of 1-CIM and 1-VTM1.

1.Verify the VTM1 card is in Shelf 1-slot 2.

2.On the VTM1 connect a Transmission Test Set to TP1 and TP2 (common).

3.On the VTM1 set S2 to select the 1020 Hz alignment tone. The tone should be heard in the Test Set speaker. Adjust the monitor volume as necessary.

4.On the CIM, set all Sections for System Test "1". (S5, Section 1 open; Sections 2,3,4 closed.)

5.Place the CIM in any open slot on Shelf 1.

6.On the CIM, connect a Transmission Test Set with the common lead in connector J13.

a.Verify -3 dBm ±0.5 dB at TP3 (adjust R83 if necessary).

b.Verify -12 dBm ±0.5 dB at J12 (adjust R44 if necessary).

3.Move the CIM to an open slot on Shelf 2.

•Verify -3 dBm ±0.5 dB at TP3.

•Verify -12 dBm ±0.5 dB at J12

4.Move the module to a open slot on Shelves 3-8 and verify the levels in Step 7.

5.Set the CIM to System Test "0". (S5 all sections closed.)

6.Remove the CIM form the rack.

4.4.7 FINAL CONFIGURATION VERIFICATION

NOTE: Make sure both power supplies are turned OFF.

1.Disconnect AC Power Cables from AC power source.

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