Replacing A Tcuc Control Board - Huawei TP48200A-D17A5-2 Telecom Power User Manual

TP48200A-D17A5-2 Telecom Power
User Manual
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Step 7 Install the UIM02C.
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Step 8 Disconnect the ground cable from the ESD wrist strap, and take off the ESD wrist strap and
ESD gloves.
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4.3.7 Replacing a TCUC Control Board

Prerequisites
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Context
You need only to disconnect the power supply to the TCUC, instead of the AC input to the
power system.
Procedure
Step 1 Connect the ground cable to the ESD wrist strap, and put on the ESD wrist strap and ESD
gloves.
Step 2 Disconnect the power cable from the UIM02C.
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2.
Step 3 Remove the fan assembly.
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Issue 04 (2019-12-20)
Connect cables to the fan assembly based on the recorded positions.
Reconnect the –48 V power cable to the UIM02C backplane.
Push in the UIM02C and tighten the screws.
Connect the signal cable to the UIM02C panel based on the recorded information.
You have obtained an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, the
cabinet door key, and tools.
The new TCUC control board is intact.
Record the position where the signal cable connects to the UIM02C panel, and then
disconnect the signal cable.
Unscrew and remove the UIM02C, as shown in Figure 4-8.
Record the positions where cables connect to the fan assembly, and then disconnect the
cables.
Unscrew and remove the fan assembly.
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