12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 83
Installing the SSU-2000
Installation Checklist
Installation Checklist
1. Unpack all equipment carefully and check it against the purchase order.
2. Remove the A-BUS and B-BUS fuses from the rear of the unit.
3. Ensure shelf and I/O adapters are securely attached to the mounting rack.
4. Ground the SSU-2000 using the Frame Ground lug.
5. Measure between ground and chassis and verify no voltage exists between
them.
6. If an SDU-2000 Expansion shelf is not being installed, ensure that the J8
connection is connected to a terminator.
7. Connect office alarms to the REMOTE and LOCAL terminals with 18 AWG wire.
8. Insert modules and filler panels in designated slots. Use proper handling
technique.
9. Connect primary power to A-BUS screws and secondary power to B-BUS
screws.
10. Measure voltage at POWER A and POWER B (if used) and verify it is –38 to
–72 vDC.
11. Insert the A-BUS and B-BUS fuses into the holders on the rear panel of the
SSU-2000.
12. Verify all modules are receiving power and generating regulated DC outputs by
checking that their POWER indicators are lit.
13. To ensure that both power inputs are valid, verify on the Communications or
Buffer modules that the green POWER indicator on the front of the
Communications module is on. Also verify that the –48V Power A and B LEDs
are both green. If all these indicators are not green, refer to Table 2-5 for the
module color code indications. Refer to Chapter 5, Maintenance and
Troubleshooting, if you are unable to obtain the correct indications.
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