Power Supply Leds - Cisco Catalyst 9400 Series Hardware Installation Manual

Power Supply LEDs

Power Supply LEDs
Note AC Power Supply works when the AC input voltage is greater than 85 V. For normal operation, the INPUT
LED on AC Power Supply should be solid green. If the INPUT LED on AC Power Supply is blinking green
or off, check the AC power supply status. For more information, refer
Supply, on page 132
DC power supply works when DC input voltage is greater than 40 V. For normal operation, the INPUT LED
on DC Power Supply should be solid green. If the INPUT LED on DC Power Supply is blinking green or off,
check the DC power supply status. For more information, refer
on page 133
Table 24: Cisco Catalyst 9400 Series Power Supply LEDs
LED type
INPUT
OUTPUT
FAIL
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
162
LED Colour
Green
Off
Blinking Green
Green
Blinking Green
Off
Red
Troubleshooting an AC-Input Power
Troubleshooting a DC-Input Power Supply,
Meaning
AC input voltage is 70 V minimum.
DC input voltage is -40 V minimum.
AC input voltage is less than 70 V.
DC input voltage is less than -40 V.
AC input voltage is between 70 V and 85 V.
DC input voltage is between -37 V and -41 V.
55 VDC power supply output and power supply
modules are operating within regulation limits.
Standby mode or sleep mode.
Blinks on for 0.5 seconds and off for 0.5 seconds.
DC output voltages have not exceeded the alarm
threshold ranges.
An output voltage is out of the specified range, or the
power supply module's fan has failed (as sensed by
lack of fan rotation), or the power supply module is
turned off after input power is applied.
Illuminates for 2-3 seconds after input is applied or
disconnected through the front panel On/ Off rocker
switch (for AC-input power supplies) or On/ Off
power button (for DC-input power supplies) or a
circuit breaker.
LEDs