H3C CR19000-20, Installation Manual

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6-3
Checking the LEDs
After the router powers up, you can determine whether the router and the components are operating
correctly by observing the LEDs on the MPUs and other components. When the router and
components are operating correctly, the LEDs are as described in
Table6-2 and Table6-3 . If the LED
states are not as described in Table6-2 and Table6-3 , the router and components might be faulty. To
identify and resolve the issue, see "Troubleshooting."
Table6-2 MPU LED descriptions
LED Status Description
FAN
OK Steady green
All the fan trays are operating correctly.
FAIL Off
PWR
OK Steady green
All the installed power supplies are operating correctly.
FAIL Off
RUN
Slow flashing green (4 Hz) The modules are loading software.
Fast flashing green (0.5 Hz) The modules are operating correctly.
ALM Off No alarm has occurred on the system
ACT
Steady green The MPU is in active mode of the chassis or system.
Flashing green
The router is in cluster mode, and the MPU is in standby
mode.
Off
The router is in single chassis mode, and the MPU is in
standby mode.
Table6-3 Module LED descriptions
LED Status Description
Fabric module
LED
RUN
Fast flashing green (4 Hz) The fabric module is loading software.
Slow flashing green (0.5 Hz) The fabric module is operating correctly.
Interface
module LED
RUN
Fast flashing green (4 Hz) The module is loading software.
Slow flashing green (0.5 Hz) The module is operating correctly.
Fan tray LED OK/FAIL Steady green The fan tray is operating correctly.
Power supply
LED
IN OK
OUT OK
Steady green The power supply is operating correctly.
IMPORTANT:
•
To check the power supply LEDs, first remove the air filter. Press the blue locking tabs at both
sides of the air filter to remove the air filter from the top hood.
•
The PWR FAIL LED on the MPU turns on if one of the installed power supplies has failed to
power up. The possible reasons might be that the power cord is not connected, the power cord is
loose or in bad condition, or the circuit breaker is off.
•
The fan trays in the top four rows (FAN 1 to FAN 12), in the middle three rows (FAN 13 to FAN
21), and in the bottom four rows (FAN 22 to FAN 33) power up after a three-second delay,
two-second delay, and four-second delay, respectively upon power-up of the router. Before a fan
tray powers up, its OK/FAIL LED is red.