Psu-Power Supply Unit; Overview; Psu Status Led - Lenovo ThinkSystem D4390 Hardware Installation And Maintenance Manual

Figure 3-4: ESM canister removal
3.2

PSU-Power Supply Unit

3.2.1 Overview

The D4390 storage enclosure is powered by four 1300-watt redundant Power Supply Units with
following features.
●
1300-watt 80Plus Titanium Level
●
Input: 200-240VAC (2+2 Redundant)
●
Input: 100-127VAC (3+1 Redundant)
●
Via IEC 320 C-14 inlet on the system rear

3.2.2 PSU status LED

Refer to the picture below for the PSU viewed from the rear of the chassis. The location of the status
LED is pointed by the arrow in Figure 3-5.
Figure 3-5: PSU viewed from rear of chassis
PSU status LED color
and behavior
Solid Green
2 Hz blinking Green
Solid Amber
1 Hz blinking Amber
PSU status description
Output ON and OK
Updating PSU firmware
1. AC cord is unplugged, or AC power is lost on a PSU, while a 2
PSU connected via same bus rail is present and providing power
2. PSU critical event causing a shutdown; failure, OCP (over current
protection), OVP (over voltage protection) or FAN fail
PSU warning events when the power supply continues to operate at
high temp, high voltage, high current or at slow FAN speed
50
nd