DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
Copyright © Huawei Technologies Co., Ltd.
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Figure 3-1 PSU
Indicators
Table 3-1 PSU indicator description
The PSU has no power input (no AC input
and no battery input)
Start / Self-check / Load (instantaneous status
during startup or upgrade)
Blinking at long
intervals (0.5 Hz)
The PSU communicating with the host
properly
Blinking at short
intervals (4 Hz)
The PSU is not communicating with the host
properly
Rectifier Fault/Address Conflict/SMU Fault