User's Manual Part 3

RBS 2109 User’s Guide

• Swap the cable thread pairs

• Perform a transmission test, see chapter RBS Site Integration

• Check the transmission cable. If it is faulty, replace it

• Replace the TIM, see Section 9.5.6 TIM Replacement on page 205.

• Replace the IFB, see Section 9.5.2 IFB Replacement on page 191.

9.4.2 Corrective Actions on the RRU

Fault

If the fault indicator is ON (red), 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 9.3.1 Reading Fault

Status on page 159

Operational

If the Operational indicator is flashing (green), then a configuration activity,

initiated from the BSC or the IXU, is in progress. For example, SW download

or synchronisation is is progress. A SW download from the BSC can take

30 – 60 minutes, a SW download from the IXU flash card 5 – 10 minutes and

synchronization 5 – 10 minutes.

• Wait until activity is finished, that is until the flashing stops

Local

If the Local indicator is ON (yellow) and if it is not possible to bring the RRU into

remote mode, either by using the OMT or by pressing the RRU Local/Remote,

then perform the following actions step-by-step until the fault ceases:

• Reset the RRU

• Replace the RRU, see Section 9.5.7 RRU Replacement on page 208

If the Local indicator is flashing (yellow) and BSC communication (though

expected) is not established, check the Local indicator on the IXU.

If the Local indicator on the IXU is flashing, see Page 176.

If the IXU has established a BSC connection, perform the following actions

step-by-step until the fault ceases:

• Ensure that the BSC has deblocked the TRXCs for the RBS

N/LZT 720 0090 Uen R1A 2004-09-17