Manual

1X UBS Macro B T S FRU S SI (Site Span I/O) Module
Procedure 6 -1 R emo ving the failed S SI
A T THE OMCR
1
Shut down site signaling functions according to Procedure 3-2 Shutdown site signaling
functions procedure for a packet BTS on page 3- 5 .
A T THE BTS SITE
2
P ower down the S SI by setting the corresponding PDU S SI 20A circuit breaker to the off
position (pulled out).
Mak e sure the PDU S SI circuit break er is set to OFF .
Y ou will be disconnecting multiple cables from connectors. If necessary , use
masking tape and a marker and temporarily tag each cable as to the proper
connector before disconnection.
3
Disconnect all of the cables connected to the S SI front panel connectors.
4
Use a T25 TORX bit/driver to completely loosen the two captive thumbscrews on the S SI
bracket right angle flange. Disengage the thumbscrews from the mounting shelf .
5
Grasp the S SI bracket right angle flange. Slide the S SI toward the middle of the mounting
shelf until the S SI bracket hooks are disengaged from the two slots on the shelf . Pull the
S SI out of the shelf .
6
If the S SI is equipped with an optional E1 daughter card. Transfer the E1 daughter card from
the failed S SI to the replacement S SI by performing step 3 through step 7 in Procedure 6-3
Replacing the E1 daughter card on page 6- 11 .
7
If the S SI is equipped with an optional QHSO . Transfer the QHSO from the failed S SI to
the replacement S SI by performing step 5 through step 10 in Procedure 6-4 Replacing
the QHSO on page 6- 15 .
Procedure 6 -2 Installing the replacement S SI
A T THE BTS SITE
1
Properly position the S SI so that the two hooks on the S SI bracket are engaged in the two
slots on the mounting shelf .
2
Engage the two captive thumbscrews, on the S SI bracket right angle flange, into the
mounting shelf .
Continued
68P09283A64 -3 6 -7
FOA SEP 2007