TP48200A-D17B3
Troubleshooting Guide
2 TP48200A-D17B3 Overview
Issue 03 (2013-05-06)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
17
Figure 2-10
PSU panel
(1) Power LED
(2) Protection LED
(3) Fault LED
Table 2-6
LED description
LED
Color
Normal
Status
Abnormal
Status
Exception Causes
Power
LED
Green
Steady
on
Off
The mains supply fails due to no AC
input, AC input overvoltage or AC
input undervoltage.
The PSU has no power output.
Protection
LED
Yellow Off
Steady on
A prewarning alarm is raised.
Over temperature shutdown occurs
when the environment temperature
exceeds 65°C (149°F).
The PSU hibernates.
In this case, only the protection LED is
on and the PSU does not report any
alarm.
Fault LED Red
Off
Steady on
The PSU has no power output due to
output overvoltage shutdown, fan failure,
overtemperature shutdown, or PSU
failure. If the unavailable power output is
caused by a mains supply failure due to
AC input absence, AC input overvoltage,
or AC input undervoltage, the fault LED
does not illuminate, either.