User's Manual Part 3

RBS 2109 User’s Guide
Related RUs
The RUs listed below have higher priority than the RU described in this section.
If they are present, go to the related section before handling this RU.
• If ‘‘SO CF RU:34/ IDB’’ appears in the OMT, then proceed with Section
9.3.8 SO CF RU:34/ IDB on page 169
• If ‘‘SO CF RU:0/ IXU’’ appears in the OMT, then proceed with Section 9.3.2
SO CF RU:0/ IXU on page 160
Displaying Fault Information
Display fault information according to Section 9.3.1 Reading Fault Status on
page 159.
Perform the following actions step-by-step until the fault ceases:
Precondition
Before starting this procedure, ensure that the GPS system has no fault and is
properly installed.
Check IXU GPS Cable
1. Check that the IXU GPS cable is free from damage. Replace if needed.
2. Check that the IXU GPS cable is correctly connected to the GPS/AUX
port on the IXU.
3. If an EBB-01 is used, then check that the GPS and GPS/AUX cables on the
EBB-01 are correctly connected.
Localising Fault on GPS Receiver
4. Check all cables and equipment (including the GPS receiver) connected to
the signal chain between the IXU GPS cable and the GPS receiver.
5. Check the power supply to the GPS by checking the DC LED in the OVP.
Refer to manufacturer’s documentation to perform fault localisation on the GPS
receiver.
Checking DC Supply
6. Check that both the – 48 V LINK cable and the termination block are
correctly connected, as shown in the figures below.
1
72
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N/LZT 720 0090 Uen R1A 2004-09-17