Advertisement
DRH
Hardware Maintenance Guide
Procedure
Step 1 Instruct the WebLMT or M2000 administrator to block the DRH.
Step 2 Power off the DRH by referring to
Step 3 Wear ESD gloves.
Take proper ESD protection measures, for example, wear ESD gloves, to prevent electrostatic
damage to the boards, modules, or electronic components.
Step 4 Loosen the screws on the cover plate of the DRH cabling cavity using an M5 Phillips
screwdriver, and then open the cover plate.
Step 5 Record all the cable connections on the panel of the module to be replaced.
Step 6 Disconnect cables from the cabling cavity and bottom panel.
Step 7 Optional: If a DRH installed in centralized mode is to be replaced, first use an M6 Phillips
screwdriver to loosen the two screws on the metal sheet of the DRH and remove the metal
sheet, as shown in
Issue 1.0(2013-04-10)
(1) Main mounting bracket
bracket (4) Nut
(5) Square-neck bolt
bracket
Run the LST IBSLOCELL command to list all cells on the DRH.
Run the BLK IBSLOCELL command to block all cells on the DRH.
Figure
4-2.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
(2) Pole mounting bracket
(6) Hoist clamp on the main mounting
3.2 Powering Off a
DRH.
4 Replacing a DRH
(3) Auxiliary mounting
7
Advertisement
