Related Manuals for Huawei DRH
Summary of Contents for Huawei DRH
- Page 1 Hardware Maintenance Guide Issue Date 2013-04-10 HUAWEI TECHNOLOGIES CO., LTD.
- Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
- Page 3 3 Powering On and Off a DRH After a DRH is powered on, check the status of DRH indicators and voltage. Before the DRH is powered off, follow the normal power-off or emergent power-off procedure as required.
- Page 4 1 About This Document An optical module implements optical-electrical conversion, enabling optical transmission between a DRH and other devices. You must disconnect optical fibers from an optical module before replacing the optical module. Disconnecting the optical fibers interrupts the transmission of CPRI signals.
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Page 5: Table Of Contents
Hardware Maintenance Guide 1 Contents Contents 1 Changes in the DRH Hardware Maintenance Guide ............1 2 Preventative Maintenance Items for a DRH ................. 2 3 Powering On and Off a DRH ....................4 3.1 Powering On a DRH ..........................4 3.2 Powering Off a DRH .......................... -
Page 6: Changes In The Drh Hardware Maintenance Guide
Hardware Maintenance Guide 1 Changes in the DRH Hardware Maintenance Guide Changes in the DRH Hardware Maintenance Guide This chapter describes the changes in the DRH Hardware Maintenance Guide. Date Issue Description Author 2013-04-10 First release ID: h00173116/z00138293 Huawei Proprietary and Confidential Issue 1.0(2013-04-10) -
Page 7: Preventative Maintenance Items For A Drh
2 Preventative Maintenance Items for a DRH Preventative Maintenance Items for a Preventative maintenance improves the reliability of the DRH. You are advised to perform scheduled maintenance yearly. When working at heights, the maintenance personnel need to exercise caution to avoid falling of objects, which may cause injuries or death. - Page 8 Hardware Maintenance Guide 2 Preventative Maintenance Items for a DRH Item All alarm cables (optional) are installed and free from any damage. All monitoring cables (optional) are installed and free from any damage. If any of the requirements in the checklist is not met, perform the following corrective actions.
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Page 9: Powering On And Off A Drh
Do not look into the optical module without eye protection after the DRH is powered on. Step 2 Wait for three to five minutes, and then check the status of the indicators on the DRH. For details, see section "DRH Indicators" in the DRH Hardware Description. -
Page 10: Powering Off A Drh
The procedure for powering off a DRH varies with the actual condition, for example, in a normal situation or an emergency. You must power off the DRH in a normal situation such as moving the equipment or anticipating a territorial blackout. You must also power off the DRH in an emergency such as a fire, smoke, or water damage. -
Page 11: Replacing A Drh
Hardware Maintenance Guide 4 Replacing a DRH Replacing a DRH This chapter describes the procedure and precautions for replacing a DRH. Prerequisites The WebLMT or M2000 communicates with the station properly. The types of faulty DRHs are confirmed as follows: −... - Page 12 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...
- Page 13 Figure 4-4. In scenarios where DRHs are installed in centralized mode, the DRH in the middle can be removed without removing the two DRHs on its right and left sides. The procedure is identical to the procedure for removing a single DRH.
- Page 14 Hardware Maintenance Guide 4 Replacing a DRH Figure 4-3 Loosening captive screws on the attachment plate Figure 4-4 Supporting the DRH bottom Huawei Proprietary and Confidential Issue 1.0(2013-04-10) Copyright © Huawei Technologies Co., Ltd.
- Page 15 Step 11 Close the cover plate of the DRH cabling cavity, and then tighten the protection screw on the cover plate of the DRH cabling cavity using an M5 Phillips screwdriver.
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Page 16: Replacing An Optical Module
MML command, obtain all types of optical modules. − If a fault in the optical module on the DRH side causes disconnection of the CPRI link, the MML command to query the type of the fault cannot be used. In this case, query the type of the corresponding optical module on the DCU side instead and obtain a new optical module of the same type. - Page 17 Description. Step 9 Reconnect the cables in the cabling cavity. Step 10 Close the cabling cavity of the DRH and use an M4 Phillips screwdriver to tighten the screws on the cover plate for the cabling cavity. Step 11 Take off the ESD gloves, and pack up all the tools.
- Page 18 Fill in the fault form with detailed information about the replaced module. Contact the local Huawei office to handle the faulty optical module. Huawei Proprietary and Confidential Issue 1.0(2013-04-10) Copyright © Huawei Technologies Co., Ltd.