Replacement Of Bts Fan Module (Bfan); Replacement Of Power Supply Unit (Psu) - Huawei Airbridge CBTS3612-800 User Manual

User Manual
Airbridge cBTS3612-800 12-carrier CDMA Base Station

2.7 Replacement of BTS Fan Module (BFAN)

I. Note
The replacement of a BFAN will have some influence on the heat dissipation of a
base band frame.
II. Replacement Details
1)
Dismount the fan module and gently pull the fan frame out of the slot.
2)
Take apart the damaged fan, but take care to put the screws away for later use.
3)
Install a new fan and bind the distributions well again.
4)
Gently push the fan frame into the slot until the fan frame panel and the rack fit
well and fasten it.
5) If the BFAN is found working normally, related alarms have disappeared and
corresponding recovered alarms occurred, it shows that the replacement is
completed.

2.8 Replacement of Power Supply Unit (PSU)

I. Note
1)
The power system made up of this power module has n+1 redundancy
configuration. This achieves more reliable operation and one damaged module
will not influence the normal operation of the system. Therefore, the damaged
power module can be replaced without affecting the normal operation of the
system. If any fault occurs to two or more modules at the same time, the normal
operation of the whole base station may be affected as a result of the load.
2)
When there is any fault indication or alarm on a module (unless there is special
burning), do not replace it at once but make a preliminary judgement of the
module fault based on the display status of the indicator on the module panel.
Then, make a decision about the replacement. The specific operations are as
follows:
a) Display description of the indicator: green indicator on (Vin): means that there is
input voltage on the module. Red indicator on (Alm): any fault occurs to the module.
Green indicator on (Vo): means that there is output on the module.
b) In normal cases, the two green indicators on the power module are on while the
red indicator is off.
When there is light load output from the system, some module may not work
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(namely, Vo indicator being off) as a result of flow equalization, but this cannot
be considered as faulty.
If the power module input green indicator (Vin) is on, but the output green
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indicator (VO) is off or flashes, check whether the faulty module is well installed
and the upper and lower fastening parts on the panel are fastened clockwise. If
not, reinstall them according to module fixture procedures. If the output green
indicator (Vo) is still off, this module is faulty.
c) If the three indicators on the module panel are all off, check as follows:
Check the indicator display statuses of other power modules in the same
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system. If all power module indicators are off, then check whether the input
bus-bar (or connector) of the power system is powered on and the connection
gets loose. If any problem exists, connect again and input.
If there is any module indicator on or the power system input bus-bar is
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confirmed powered on, check whether the module is well installed and the upper
03Q-0112-20020720-120
2 Board and Part Replacement
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