User's Manual Part 3

RBS 2109 User’s Guide
Checking Incoming DC Power (Optional)
5. Open the MBU cover and use a multimeter to check that the voltage,
supplying the RBS, is between – 40.5 and – 57 V DC. If DC supply is not
detected, then check the DC supply source.
P010497A
Figure 80 Measuring Incoming DC Voltage
9.3.8 SO CF RU:34/ IDB
This section describes how to localise an SO CF RU:34/ IDB.
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:
Resetting IXU
1. Press the IXU Reset button on the IXU Interface panel.
Reinstalling IDB
2. Reinstall the IDB. For more information, see Chapter Site Installation Tests
in this manual.
Replacing Flash Card
3. Replace the flash card, see Section 9.5.1 Flash Card Replacement on
page 187.
169EN/LZT 720 0090 Uen R1A 2004-09-17