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NE40E V800R010C10SPC500 Installation Guide

This is NE40E V800R010C10SPC500 Installation Guide

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Typical Misoperation Cases

Typical Misoperation Cases


This section describes typical scenarios to avoid in storing, transporting, installing, operating, and returning devices and provides instructions to prevent damages caused by mishandling equipment.

1. Stacking and Placing Devices

Typical mishandling

a. Chassis are stacked insecurely.

b. Chassis are stacked upside down.

c. More chassis than permitted are stacked.

d. Unpacked boards are placed on uneven ground.

e. Unpacked boards are stacked.

f. Multiple boards and subcards are packed in one package.

Instructions for stacking and placing devices

  • Place devices securely.
  • Stand devices in an upright position.
  • Do not stack more chassis or packaged boards than permitted.
  • Place unpacked chassis on wooden protection bases.
  • Do not stack unpacked boards.
  • Do not pack multiple subcards in a single package.
  • Use standard packaging materials to package chassis and boards (operational or faulty).

2. Transporting Devices

Typical mishandling

Boards are carried unpacked to the installation site and damaged or deformed.

Instructions for transporting devices

Keep boards in their original packaging, secure boards firmly for transport, and minimize impact when transporting boards to the installation site.

3. Moving Chassis

Typical mishandling

A chassis is laid on its sides and dragged, and the PEM handle is damaged.

Instructions for moving devices

  • Do not lay a chassis on its front or back panel. Never drag a chassis.
  • Stand a chassis upright and hold the load-bearing handles to lift and move it.
  • When you move a chassis or device on a dolly, keep the chassis upright and stable.

4. Placing Boards

Typical mishandling

Unpacked boards are stacked or laid on their circuit panel or connector, as shown in the following images. Handles and components are damaged

Unpacked boards stacked

Board laid on its circuit panel

Board standing on its connector

Instructions for handling boards

Follow these instructions when handling new boards and faulty boards that are removed from a device.

  • Do not stack unpacked boards.
  • Do not lay a board on its circuit panel.
  • Do not stand a board on its corner or connector.
  • Keep boards in original packaging before installation.
  • Follow the preceding instructions to place faulty boards that are removed from a device.

5. Positive and Negative Leads

Typical mishandling

Positive and negative terminals are connected to each other, resulting in a circuit break and backplane and board damage.

Instructions for connecting power cables

  • Before you power on a device, ensure that power cables are connected correctly.
  • Before you power on a device, ensure that the voltage is in the range of -38 V DC to -72 V DC

6. Inserting Boards

Typical mishandling

A board is not installed firmly and captive screws are not tightened. As a result, the board fails to start, a master/slave MPU/SFU switchover fails, LPU resets unexpectedly, and packets are lost in forwarding.

Instructions for installing boards

  • Gently insert a board along the guide rail.
  • Raise ejector levers to 45 degrees and then lower ejector levers with both hands to ensure that the board is firmly seated in the slot.
  • Use a Phillips screwdriver to tighten the captive screws.

7. Installing Devices

Typical mishandling

A board or subcard is not installed correctly along the guide rail. The pins of the backplane and board or subcard are bent or damaged.

Instructions for installing devices

  • Before you insert a board or subcard, ensure that there is no damage nor bent pins on connectors on the backplane or board or subcard.
  • Do not repair faulty components. Replace them with spares.
  • Push the board or subcard correctly along the guide rail and apply less pressure when the connector of the board or subcard touches the connector of the backplane.
  • If the board or subcard fails to insert all the way, remove the board and locate the problem. Do not force the board into the slot

8. Unpacking Chassis Outdoors

Typical mishandling

The unpacked chassis is set down outdoors with the packing bag open. Dust and foreign objects easily enter the chassis.

Instructions for Unpacking Devices Outdoors

When unpacking a chassis outdoors, keep the chassis in the packaging box to protect the chassis from dust and foreign objects until installation

9. Filler Panels in Empty Slots.

Typical mishandling

Filler panels are not inserted into empty slots.

Instructions for empty slots

  • Locate the equipment room away from dusty roadside or sand field, use dust proof materials for ground, wall, and ceiling construction, and shut doors and windows closely.
  • Insert filler panels into slots that are empty.
  • Install air filters in devices to protect devices from dust.

10. Leaks and Water Damage

Typical mishandling

Liquid is spilled or leaks onto a board. Circuits break on the board and a component on the board is damaged.

Instructions to prevent board damage

Check the warehouse and equipment room regularly for water leaks and ensure that windows are closed tightly.

11. Storage and Operation Environments

Typical mishandling

Corrosion occurs when a board comes in contact with corrosive chemicals in a moist and dirty environment.

Instructions for environment control

  • Locate warehouses and equipment rooms away from areas with high concentration of corrosive gases, such as chemical plants, mines, garbage disposal field, and areas using a large amount of fuel.
  • Keep warehouses and equipment rooms compliant with the requirements for temperature, humidity and building materials of warehouses and equipment rooms.
  • Keep batteries separate from other batteries.
  • Isolate warehouses and equipment from sewers, and keep air intake vent away from pollution source.
  • Employ a professional company to monitor and measure the environment regularly.

12. Laying Out Cable

Typical mishandling

Fiber cables are coiled into rings with a radius of less than 4 cm and laid out in disorderly fashion.

Instructions for laying out cables

Lay out optical fiber cables in order. Do not coil fiber cables into rings with a radius of less than 4 cm.

13. Bundling Cables

Typical mishandling

Power cables, ground cables and signal cables are all bundled together with cable ties.

Instructions for cable bundling

Keep power cables, ground cables, and signal cables at a distance greater than 3 cm from each other. Do not bundle these cables together.

14. Inserting Cable Connectors

Typical mishandling

An optical connector is not fully seated.

Instructions for connectors

Ensure that cable connectors are fully seated.

15. Unused Optical Connectors

Typical mishandling

Unused optical connectors are left unprotected.

Instructions for handling connectors

Keep protective caps on unused optical connectors to prevent damage.

16. Unused Optical Ports and Modules

Typical mishandling

Unused optical ports and optical modules are left unprotected.

Instructions for handling optical ports and modules

Keep protective caps on unused optical ports and modules to prevent damage.

17. Returning Faulty Boards

Typical mishandling

When an LPU or one of its subcards is faulty, both the LPU and its subcards are returned, which increases the risk of damage to components that are not faulty.

An LPU and its subcards are independent modules and can be returned for repair individually.

Instructions for returning faulty boards

  • When a fault occurs on a board that supports subcards, identify whether the board or its subcard is faulty and return only the faulty board.
  • Place the returned board or subcard in its original package for return.

18. Routing Optical Fibers and Network Cables to Prevent the Blocking of Air Filters on SFUs

Typical mishandling

Optical fibers and network cables are not properly routed. As a result, the air filters of SFUs are blocked and cannot be removed for cleaning.

Instructions for routing optical fibers and network cables

Comply with relevant routing regulations and standards to prevent the blocking of air filters.

Updated: 2019-01-03

Document ID: EDOC1100055059

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