Huawei BTS3900C Hardware Description page 78

BTS3900C (Ver.C)
Hardware Description
Figure 3-30 FANc
Functions
The FAN unit performs the following functions:
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Indicator
There is only one indicator on the panel of the FAN unit, which indicates the operating status
of the fans.
Table 3-55 Indicator on the panel of the FAN unit
Silkscreen
STATE
Issue 03 (2013-05-27)
NOTE
There is a FANc silkscreen on the FANc while the FAN has no such silkscreen.
Controls the fan speed.
Reports the status, temperature, and in-position signal of the fans to the main control
processing unit.
Monitors the temperature at the air intake vent.
Dissipates heat.
The FANc provides a read-write electronic label.
Table 3-55 describes the indicator.
Color
Red or green
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Status
Blinking green (on
for 0.125s and off for
0.125s)
Blinking green (on
for 1s and off for 1s)
Blinking red (on for
1s and off for 1s)
3 BTS3900C Modules
Description
The module is not
registered, and no
alarm is reported.
The module is
working.
The module is
reporting alarms.
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