Replacing The Signal Transfer Board - Huawei TP482000B Series User Manual

TP482000B V300R002C03 Telecom Power
(TP482000B-N20B1, TP482000B-N20B2,
TP481200B-N20B1, and TP481200B-N20B2)
User Manual
Step 10 Disconnect the ground cable for the ESD wrist strap, and take off the ESD wrist strap and
ESD gloves.
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7.3.4 Replacing the Signal Transfer Board

Prerequisites
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Context
Disconnect the AC input to the power system only when you need to replace the signal
transfer board for the power distribution monitoring unit in an AC cabinet.
Do not perform operations with power on because the signal transfer board for the power
distribution monitoring unit in an AC cabinet has dangerous voltages.
Procedure
Step 1 Connect the ground cable for the ESD wrist strap, and put on the ESD wrist strap and ESD
gloves.
Step 2 Loosen the screws on the maintenance terminal of the AC transformer in the AC cabinet.
After the metal bridgeware slides down to short-circuit the maintenance terminal, tighten the
screws, as shown in
Issue 07 (2020-04-10)
You have obtained an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, a tool
kit, and the cabinet door key.
The new signal transfer board is intact.
Figure 7-20.
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7 Parts Replacement
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