User's Manual Part 3

RBS 2308 and RBS 2309 User’s Guide
Transmission OK
If a TIM is used and a
green Transmission OK port indicator is off, even though
transmission is ex
pected, then perform the following actions step-by-step until
the fault ceases:
• Ensure that the TIM is properly mounted, and the selector switch for
transmission impedance selection is set correctly for each port
• Ensure that the transmission cables have been properly connected to the
right port in the IXU, and each cable thread connected to the correct inlet
Note: The order of the ports in the IXU is: A C B D.
• Ensure that the external transmission equipment is working properly and
that cables are connected correctly
• Swap the cable thread pairs
• Perform a transmission test, see c hapter RBS Site Integration
• Check the transmission cable. If it is faulty, replace it
• Replace the IFB, see Section 10.5.3 Replacing an IFB on page 215.
If a PSTU is used, then follow the instructions in the following
OPI:
E1 Interface Down 9/1543-LZA 701 0001
10.4.3 Corrective Actions on the RRU
Fault
If the red Fault indicator is on, an RRU HW fault(s) is detected. Perform the
following actions step-by-step until the fault ceases:
• Use the OMT to display fault information, see Section 10.3.1 Reading Fault
Status on page 177
Operational
If the green Operational indicator is double-flashing, software is being
downloaded. If the indicator is flashing, configuration is in progress. A software
download from the BSC can take 30 – 60 minutes, a software download from
theIXUflashcard5–10minutes,andaconfigurationlessthan5 minutes.
Wait until all activity is finished, that is, until the flashing stops.
202
EN/LZT 720 0027 Uen R8A 2006-06-27