Hardware Description and Reference for Avaya ... - Avaya Support

Circuit packs, channel service units, and power supplies
LEDs
AC power
Commercial AC is the primary input power source. Both slot 0 and slot 15 have dedicated AC
input. The 655A power supply can operate on AC input that ranges from 90 to 264 VAC at 47 to
63 Hz. The nominal ranges for AC power are:
● 100 to 120 VAC at 50 or 60 Hz
● 200 to 240 VAC at 50 or 60 Hz
DC power
Minus 48VDC power can be supplied simultaneously as backup power. One -48VDC power
input point is provided on the G650 backplane and is distributed through the backplane to each
power supply.
The five LEDs on the faceplate of the 655A power supply are in a vertical line with the red LED
on top. These five LEDs provide the following status:
● Red - This LED:
- Lights when there is a failure in either the power supply or the fans. For a G650 with
redundant power supplies, a failure in the fan assembly results lights this LED on both
power supplies.
- Flashes off once per second when the software shuts down the ring voltage output of a
power supply
● Yellow - This LED:
- Lights when the status of the power supply and fans is OK
- Flashes once per second when the software shuts down a single power supply, in a
carrier with operational redundant power supplies
● Green - Lights when there is AC power applied to the power supply
● Green - Lights when there is DC power applied to the power supply
● Green - Lights when the power supply is supplying ringing to the G650
See Figure 60: 655A faceplate LEDS on page 217 for an example of 655A faceplate LEDs
216 Hardware Description and Reference for Avaya Communication Manager