User's Manual Part 3

RBS 2109 User’s Guide
The fan unit performs a self test
7
Check that the test sequence below is carried out:
• The fans run at maximum speed for approximately 5 seconds
• The fans run at nominal speed for approximately 5 seconds
• The fans stop for approximately 5 seconds
8
Ensure that the indicator status of the fan unit is in accordance with
the table below:
Table 60 Fan Unit Indicators After Test
Fan Unit Indicator
Status
Fault Off
Operational On
7. Reinstall the fan unit cover.
Handling Replaced Units
Unless under contractual warranty, after replacement, the fan unit should be
disposed of locally by the customer according to environmental regulations. Do
not return the fan unit to Ericsson for replacement, repair or disposal.
9.5.5 PIB Replacement
This section describes how to replace a faulty Power Interface Board (PIB).
The PIB is located in the MBU.
Taking the RBS Out of Operation
Note: If the PIB is mounted in an extension cabinet, only that cabinet needs
to be taken out of operation.
1
Open the sunshields.
2
Contact the OMC operator to obtain permission to temporarily take
cells out of service. Wait until the RF off indicator shows a continous
light.
2
02
E
N/LZT 720 0090 Uen R1A 2004-09-17