Cooling System; Fan Trays - H3C SR8800 Series Installation Manual

Figure 13 NEPS3500-D DC power module
(1) Power input LED
Table 6 DC power module LED description
LED
IN (input)
OUT (output)
FAIL (fault)

Cooling system

Fan trays

The SR8800 routers use fan trays for heat dissipation. The fan trays are hot swappable, and you can
replace fan trays without powering off the router. The fan trays can monitor the operating status of fans,
automatically adjust fan rotation speed to decrease noise and improve energy efficiency, and display
alarms.
IMPORTANT:
The SR8802 and the SR8812 routers use the same type of fan trays. The SR8805 and the SR8808 routers
use chassis-specific fan trays, and you cannot interchange their fan trays with any other SR8800 routers.
(2) Power output LED
Color Status
Steady on
Green
Off
Steady on
Green
Off
Steady on
Red
Off
Description
Power is being correctly input.
The power module is absent or has input voltage error.
The power module is correctly outputting power.
The power module has output voltage error or is absent.
The power module is experiencing an overvoltage, overcurrent, or
over-temperature condition.
The power module is operating correctly or absent.
13
(3) Power fault LED