Component
identification 13
Power supply LEDs
The power supply comes with one LED and the LED is visible from the rear of the power supply.
PS-2801-9L
LED Appearance
Description
Off
No AC power
Green
Output on, normal
Green blinking (1
sec/ on, 1 sec/ off,
0.5Hz)
Standby mode normal
Green blinking (0.25
sec/ on, 0.25 sec/ off,
2Hz)
Sleep PSU in cold redundant/ off mode
Amber
Standby mode with OTP range
12V fault (include OVP, UVP, OCP, SCP and OTP)
Fan lock 15 sec including stand-by mode
DPS-800AB-37 A
LED Appearance
Description
Off
No AC power to power supply
Green
+12V output on, normal
Green blinking (1
sec/ on, 1 sec/ off,
0.5Hz)
AC present/ only +12VSB on (PS off) or PSU in smart standby mode
Green blinking (0.25
sec/ on, 0.25 sec/ off,
2Hz)
Power supply FW updating
Amber
Power supply critical event causing a shutdown; OTP, OCP, UVP, OVP
fan fail
Amber blink (1Hz)
Power supply warning events where the power supply continues to
operate; high temp, high power, high current, slow fan
PS-2551 -9L1
LED Appearance
Description
Off
No AC power to all power supplies
Green
Output on, normal
Green blinking (1
sec/ on, 1 sec/ off,
0.5Hz)
Standby mode normal
Green blinking (0.25
sec/ on, 0.25 sec/ off,
2Hz)
Sleep PSU in cold redundant/ off mode
