Psu; Pmu; Ac Detection Board - Huawei TP48200A-D17B3 Troubleshooting Manual

TP48200A-D17B3
Troubleshooting Guide
Figure 5-1 DC contactor

5.5 PSU

The PSU runs properly only when both of the following conditions are met:
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5.6 PMU

The PMU is faulty in any of the following cases:
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5.7 AC Detection Board

The AC detection board PW31ACDA is taken as an example to check an AC detection board:
Issue 03 (2013-05-06)
When the PSU does not communicate with the PMU, the RUN LED of the PSU is on
and the ALM LED is off. The input AC voltage is around 220 V.
When the PSU communicates with the PMU (the communication cable to the PSU is
properly connected), the PMU can perform boost charge, floating charge, and current
control on the PSU.
Obvious faults occur on the PMU, for example, breakdown, startup failure, LCD display
failure, and keyboard operation failure.
A fault occurs in the system but the PMU does not generate an alarm.
The system runs normally (false alarm) but the PMU generates an alarm.
Communication interruption occurs when the PMU monitors the subordinate equipment.
The PMU fails to control and monitor all the modules when these modules work
normally and the communication cables are properly connected.
The PMU fails to monitor and control AC distribution and DC distribution when AC
distribution and DC distribution are normal and the communication cables are properly
connected.
Users have trouble in setting PMU parameters and viewing operation information.
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5 Common Faults
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