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S9300, S9300E, and S9300X Series Switches Hardware Installation and Component Replacement

This document describes hardware installation procedures of the S9300, S9300E, and S9300X series switches, troubleshooting methods for common hardware faults, and switch maintenance instructions.

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Installing S9303 and S9303E Chassis

Installing S9303 and S9303E Chassis


  • Do not block the air intake vent (on the left side) and air exhaust vent (at the rear) on the chassis. Leave 70 mm to 90 mm clearance to ensure effective heat dissipation.
  • Do not move or lift a switch by the top edges of the chassis as this may distort the chassis.
  • When installing a switch, ensure that the chassis bottom is completely attached to the guide rails or tray in the cabinet or rack.
  • Keep the tweezers delivered with the switch for future use.

  • The methods for installing the S9303 and S9303E chassis are the same. This section uses S9303E as an example to describe the installation procedure.

Tools and Accessories

  • Scissors
  • Flat-head screwdriver
  • Phillips screwdriver
  • Marker
  • Installation template
  • Floating nuts and matching screws
  • Guide rails and matching screws (separately purchased)
  • Multimeter


  1. Install mounting brackets. Measure the distance a from the front mounting rails to the interior side of the front door (see Checking the Cabinet or Rack), and then install mounting brackets to the switch based on the mapping between distance a and mounting bracket installation positions.

    Table 7-1 Mapping between distance a and mounting bracket installation positions

    Distance a

    Mounting Bracket Installation Position

    68 mm

    See Figure 7-1.

    • 95 mm

    • 100 mm

    See Figure 7-2.

    193 mm

    See Figure 7-3.

    Figure 7-1 Mounting bracket installation position (a = 68 mm)
    Figure 7-2 Mounting bracket installation position (a = 95 mm or a = 100 mm)
    Figure 7-3 Mounting bracket installation position (a = 193 mm)

  2. Mark mounting holes on the mounting rails.
    1. Cut off the installation template. Use a pair of scissors to cut off the installation template along the cutting line marked "03 (Huawei guide rails not used)". See Figure 7-4.

      Figure 7-4 Cutting off the installation template

    2. Locate the four mounting holes to be used. Determine the chassis installation position in the cabinet, use the installation template to locate four mounting holes, and use a marker to mark these mounting holes. See Figure 7-5.

      • The installation height of a chassis must be a multiple of 1 U (including 1 U).

      • 1 U equals 1.75 inch (44.45 mm). U is a unit of height defined in International Electrotechnical Commission (IEC) 60297.

      Figure 7-5 Locating mounting holes

    3. Remove the installation template.
  3. Install the floating nuts and guide rails.
    1. Use a flat-head screwdriver to install four floating nuts in the marked mounting holes. See callout 1 in Figure 7-6.
    2. Secure the guide rails in the marked position with screws. See callout 2 in Figure 7-6.

      If no guide rails are available, use a tray instead.

      Figure 7-6 Securing the guide rails

  4. Install the chassis in the cabinet.
    1. Two persons lift the chassis onto the guide rails from the front door, and then slowly push the chassis into the cabinet along the guide rails. See callout 1 in Figure 7-7.
    2. Use screws to secure the chassis to the cabinet. See callout 2 in Figure 7-7.

    Figure 7-7 Installing the chassis in the cabinet

  5. Connect the ground cable. The methods for connecting the OT and JG terminals are different. Select a method according to the ground cable type.
    • Figure 7-8 shows how to connect the OT terminal. The tightening torque for the M6 screws is 4.8N•m.
    • Figure 7-9 shows how to connect the JG terminal. The tightening torque for the M6 screws is 4.8N•m.

    Figure 7-8 Connecting the ground cable (OT terminal)
    Figure 7-9 Connecting the ground cable (JG terminal)

Follow-up Procedure

After the ground cable is connected, use a multimeter to measure the resistance between the ground points at two ends of the ground cable. The resistance must be smaller than 0.1 ohm.

Updated: 2019-11-30

Document ID: EDOC1000069582

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