H3C S7502 User manual

Installation Manual

H3C S7502 Ethernet Switch Table of Contents

Table of Contents

Chapter 6 Hardware Maintenance................................................................................................6-1

6.1 Required Tools...................................................................................................................6-1

6.2 Removing and Installing Power Module............................................................................6-1

6.2.1 Installing a Power Module.......................................................................................6-1

6.2.2 Removing a Power Module.....................................................................................6-2

6.3 Removing and Installing Cards..........................................................................................6-2

6.3.1 Installing a Card ......................................................................................................6-3

6.3.2 Removing a Card ....................................................................................................6-3

6.4 Removing and Installing Fan Tray.....................................................................................6-4

6.5 Installing the Mounting Brackets and Cable Management Bracket...................................6-5

Installation Manual

H3C S7502 Ethernet Switch Chapter 6 Hardware Maintenance

6-1

Chapter 6 Hardware Maintenance

Caution:

The power modules of the S7502 are hot-swappable.

When installing or replacing an in-service power module, pay attention to operations

and electrical safety. Do not touch any naked wire, terminal or any part of the product

labeled with a high-voltage warning to avoid injury.

6.1 Required Tools

zESD-preventive wrist strap

zScrewdriver

6.2 Removing and Installing Power Module

Figure 6-1 Install a power module

6.2.1 Installing a Power Module

1) Wear an ESD-preventive wrist strap and take the new power module out of the

package. Check that the input mode (DC or AC) of the power module is correct.

2) Grasp the handle of the module with one hand and hold the module bottom with

the other. Slide the module slowly along the guide rail into the chassis. See ①in

Figure 6-1. Ensure the module is well contacted with the guides.

Installation Manual

H3C S7502 Ethernet Switch Chapter 6 Hardware Maintenance

6-2

Caution:

zNote the direction of the power module. When you insert the power module, let the

side with the label face upward.

zTo avoid breaking or cranking the power terminals, slide the module gently into the

slot. If the module is not properly aligned, slide it out and insert it again.

Step 3: Fasten the captive screws to fix the power module on the chassis. See ②in

Figure 6-1.

Caution:

If the captive screws cannot be fastened, check whether the power module is properly

seated.

6.2.2 Removing a Power Module

The removal process of power module is opposite to the installation process:

1) Loose the captive screws on the power module.

2) Slide out the power module to be replaced.

Caution:

zSince the power module of the S7502 is heavy, you are recommended to grasp the

handle of the power module with one hand and hold the bottom with the other while

pulling out a power module slowly.

zIf you are not going to install a new power module after removing a power module,

you should install a blank panel for the heat dissipation and dust-proof purpose.

6.3 Removing and Installing Cards

SRPU and LPUs of the S7502 can be installed and removed in a similar way. This

section describes the general procedures for installing and removing these cards.

The LPUs of the S7502 are hot-swappable.

Installation Manual

H3C S7502 Ethernet Switch Chapter 6 Hardware Maintenance

6-3

Figure 6-2 Install a card

6.3.1 Installing a Card

1) Wear an ESD-preventive wrist strap and loose the captive screws on the blank

panel on the slot, where the card should be inserted.

2) Hold the ejector levers on the card with both hands and pull them outward. Slide

the card into the slot along the guides. Push the card until the positioning pin on its

handle touches the hole in the chassis. See ①in Figure 6-2.

3) Press the ejector levers inward and seat the pin on the handle bar into the

positioning hole in the chassis. See ②in Figure 6-2.

4) Fasten the captive screws to fix the card. See ③in Figure 6-2.

Note:

Put away the removed blank panel for future use.

6.3.2 Removing a Card

The procedure for removing a card is opposite to the installation procedure.

1) Wear an ESD-preventive wrist strap and loose the captive screws on the card

with a Philips screwdriver.

2) SHold the ejector levers on the card with both hands and pull them outward to

separate the connectors of the card from the backplane.

3) Gently slide the card along the guides out of the slot.

Installation Manual

H3C S7502 Ethernet Switch Chapter 6 Hardware Maintenance

6-4

6.4 Removing and Installing Fan Tray

Caution:

Do not touch any naked wire, terminal or any part of the product labeled with a

high-voltage warning to avoid bodily injury.

Figure 6-3 Install a fan tray

1) Wear an ESD-preventive wrist strap and loose the captive screws on the fan tray.

Caution:

If you want to replace the fan tray of an in-service switch, separate the fan tray from the

backplane to disconnect the power and wait till the fan stops rotating before pulling it

out completely. Considering that the fan may be still rotating, avoid stretching your

hands into the fan tray.

2) Slide the fan tray out of the slot.

3) Put the removed fan tray into the package.

4) Take out a new fan tray from the package. Slide the fan tray along the guides into

the slot until the frame is seated in the backplane of the switch.

5) Fasten the captive screws.

Installation Manual

H3C S7502 Ethernet Switch Chapter 6 Hardware Maintenance

6-5

Caution:

Install a new fan tray soon after removing the old one to ensure that the switch can work

normally.

6.5 Installing the Mounting Brackets and Cable Management

Bracket

Two mounting brackets and a cable management bracket are shipped with the S7502.

Take the following steps to install the mounting brackets and cable management

bracket:

1) Face the LPU slots of the switch.

2) Attach the shipped left and right mounting brackets onto the left and right sides of

the chassis, respectively.

3) Install the shipped cable management bracket onto the left side (opposite to the

fan tray) of the chassis, as shown in Figure 6-4.

（1）（2）（1）

1) Mounting brackets 2) Cable management bracket

Figure 6-4 Install mounting brackets and cable management bracket on the S7502

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