Table of Contents
TP482000B V300R002C03 Telecom Power
(TP482000B-N20B1, TP482000B-N20B2,
TP481200B-N20B1, and TP481200B-N20B2)
User Manual
No.
Check Item
3
Check the red indicator status
(normal: off).
6.4 SMU
Table 6-4 SMU maintenance checklist
No.
Check Item
1
Check the green indicator status. Off:
2
Check the red indicator status.
3
Check the LCD screen status.
4
Check that the SMU can
communicate with the NMS.
Issue 07 (2020-04-10)
If...
because the ambient
temperature exceeds the
upper or lower threshold.
AC input over/undervoltage
protection has been
triggered.
The rectifier is in
hibernation.
Blinking:
The rectifier communication
has failed
The rectifier is faulty.
Steady on:
The rectifier is latched off
due to output overvoltage.
The rectifier is faulty.
If...
There is no DC input.
The SMU is faulty.
Steady on:
A critical or major alarm has
been generated.
The SMU is faulty.
The LCD flat cable is loose.
The SMU is faulty.
The communications cable
is loose.
Networking parameters are
not correctly set.
Copyright © Huawei Technologies Co., Ltd.
6 Routine Maintenance
Then...
4. If the rectifier is in
hibernation, no action is
required.
1. Check that the rectifier
communications cable is
securely connected.
2. Replace the rectifier.
1. Check that the cabinet is not
connected to an external DC
power source that has a
higher voltage.
2. Check that the rectifier output
voltage is normal.
3. Replace the rectifier.
Then...
1. Check that the DC input
power cable is securely
connected.
2. Check that the
communications cable is
securely connected.
3. Replace the SMU.
1. Check components related to
the generated alarms.
2. Replace the SMU.
1. Check that the LCD flat cable
is securely connected.
2. Replace the SMU.
1. Check that the
communications cable is
securely connected.
2. Check that networking
parameter settings are correct.
50
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