User's Manual Part 3

RBS 2109 User’s Guide
Resetting IXU
3. Press the IXU reset button on the IXU interface panel.
Replacing IXU
4. Replace the IXU, see Section 9.5.3 IXU Replacement on page 195.
9.3.5 SO CF RU:14/ Battery
This section describes how to localise an SO CF RU:14/ Battery fault.
Related RUs
• If ‘‘SO CF RU:31/ Environment’’ appears in the OMT, together with ‘‘SO CF
EC2:10/ Mains fail (external power source fail)’’, then proceed with Section
9.3.7 SO CF RU:31/ Environment on page 167.
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:
Checking HW/IDB
1. Check the DC power indicator on the IXU, and the RRU interfaces, to locate
the cabinet issuing the alarm.
2. Check in the OMT that the IDB configuration is correct, according to the
HW cabinet configuration, regarding defined climate system.
Checking Cabinet Power
3. Open the RBS and check that the DC power is switched on.
4. Open the MBU cover and check that the incoming DC cable is correctly
connected.
Checking the Battery Backup System
5. Check the backup power chain from the IXU to the battery backup system,
including any optional fuses.
6. Check the battery backup system according to the manufacturer’s
documentation.
9.3.6 SO CF RU:15/ Fan
This section describes how to localise an SO CF RU:15/ Fan fault.
165EN/LZT 720 0090 Uen R1A 2004-09-17