
H3C AR 46 Series Routers Installation Manual
Chapter 1 Router Overview
1-18
Figure 1-14
DC-input PSU
III. LED
The following figure illustrates the front panel of AC-input PSU.
Figure 1-15
Front panel of AC-input PSU
The following figure illustrates the front panel of DC-input PSU.
Figure 1-16
Front panel of DC-input PSU
Table 1-14
PSU LED description
LED
Description
ALM (red)
ON means the PSU is not well-seated or has failed.
RUN (green)
Steady ON means the PSU is operating normally, and
OFF means the PSU has failed.
AC/DC OK (red)
PSU input LED (only for the AC-input PSU). Steady ON
means the normal voltage (85 to 264 V) is inputting,
and OFF means the opposite.
1.4.5 FAN module
I. Functions
The AR 46-20 and the AR 46-40 are configured with six fans; the AR 46-80 is
configured with eight fans. These fans are working in pairs and the two fans in each pair
are working in redundancy. When all these fans are working normally, the operating
temperature of the system can be maintained between 0 and 55°C (32 to 131°F). As
the failure of a fan does not affect the operation of other fans, the normal operating
temperature of the system can maintain.