3Com 3CNJPSE24 User Manual page 14

Introduction to the Ethernet Power Supply
Table 2 Main Power Status Indications
LED Color
AC - Off Internal power supply
unit is unplugged or
faulty.
AC — Green
Indicates AC power
input active.
AC - Green Internal power supply
Blinking voltage is out of
tolerance.
AC Orange Internal problem alarm.
For LED troubleshooting information, see Appendix C,
Troubleshooting.
1-6 Ethernet Power Supply User s Guide
Main Power Status Remarks
Internal power supply
voltage is too low. All
ports are disconnected.
Internal power supply
voltage is within
tolerance.
All ports are
disconnected.
Built-in self-test failed.