Contents

6 Replacement procedures· 6-1

Replacing a power module· 6-1

Replacing a module· 6-3

Replacing an MPU or service module· 6-3

Replacing a fabric module· 6-5

Removing an interface module· 6-6

Replacing a fan tray· 6-7

Replacing a transceiver module· 6-8

Replacing an SFP+/SFP/QSFP+/QSFP28 transceiver module· 6-8

Replacing an SFP+/QSFP+/QSFP28/QSFP+ to SFP+ copper cable· 6-9

 

6 Replacement procedures

WARNING! ·     When replacing FRUs while the device is operating, ensure electrical safety. ·     To avoid bodily injury and device damage, strictly follow the replacement procedures. ·     Long-time exposure to strong air flow might cause discomfort. To avoid this hazard, do not stand close to the air outlet vents while the device is operating. If you must be next to the device on the air outlet vent side for an extended period, avoid the air flow or take other protective measures.

 

CAUTION: As a best practice to avoid data theft, remove all data from an FRU that has a storage medium, for example, a CF card, SSD card, disk, or flash before disposal of that FRU. To remove data, format or destroy the storage medium on the FRU.

 

The device uses a modular, hot-swappable architecture, and supports field replaceable units (FRUs). You can replace the FRUs when the device is operating.

Replacing a power module

	WARNING! The power module might have a high temperature. To avoid being burnt, allow the power module to cool before touching them.

 

	CAUTION: ·     Provide a circuit breaker for each power module. Before replacing a power module, turn off its circuit breaker. ·     To install the removed power module in the chassis again, install it after the status LED on it is off.

 

Strictly follow the procedures shown in Figure 6-1 and Figure 6-2 to replace a power module to avoid device damage and bodily injury.

Figure 6-1 Power module removal procedure

 

Figure 6-2 Power module installation procedure

 

To replace a power module:

1.     Prepare an antistatic mat to place the removed power module.

2.     Turn off the circuit breaker.

3.     Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded. For more information, see "Installing FRUs."

4.     Remove the power cord.

¡     For an AC power module, remove the cable tie, and then remove the power cord connector from the power module.

¡     For a DC power module, loosen the screw on the power cord connector, and then remove the connector from the power module.

¡     For a PSR3000-54AHD power module, pressing the release latch on the power cord connector with your forefinger of one hand (see callout 1) and squeezing the connector with your forefinger and thumb of the other hand (see callout 2), pull out the power cord from the power module, as shown in Figure 6-3.

Figure 6-3 Removing the power cord from a PSR3000-54AHD power module

(1) Press the release latch on the connector
(2) Pull the connector out of the power module

 

5.     Press the latch on the power module to the handle direction and pull the power module part way out of the slot.

6.     Holding the power module handle with one hand and supporting the power module bottom with another, pull the power module slowly out of the slot.

7.     Place the removed power module on the antistatic mat.

8.     Install a new power module. For information about the power module installation procedure, see "Installing FRUs."

Figure 6-4 Removing a power module (S12516R)

(1) Press the latch to the handle direction
(2) Pull the power module slowly out of the slot along the guide rails

 

Replacing a module

Before you replace a module, remove all its cables. To remove the cables from a service module, you can first remove the cable management brackets at the two sides of it.

The replacement procedure is similar for MPUs, service modules, and fabric modules. Before you rotate outward the ejector levers of the module, perform either of the following tasks:

·     MPU or service module—Loosen the captive screws on the module.

·     Fabric module—Press the buttons on the ejector levers to release them.

If you are not to install a module in a slot, install a blank filler panel in the slot to ensure adequate ventilation and dust prevention.

Replacing an MPU or service module

1.     Prepare an antistatic mat to place the removed MPU or service module.

2.     Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded. For more information, see "Installing FRUs."

 

3.     Use a Phillips screwdriver to loosen the captive screws on the MPU or service module, as shown by callout 1 in Figure 6-5 or Figure 6-6.

4.     Perform either of the following tasks:

¡     For a service module, S12516R MPU, or S12508R MPU, hold the ejector levers on the module and rotate outward the ejector levers, as shown by callout 2 in Figure 6-5. Then pull the module part way out of the slot.

¡     For an S12504R MPU, pivot up the handle of the MPU and pull the MPU part way out of the slot, as shown by callout 2 in Figure 6-6.

5.     Supporting the MPU or service module bottom with the left hand, slowly pull the MPU or service module out of the slot along the guide rails with the right hand, as shown by callout 3 in Figure 6-5 or Figure 6-6.

6.     Place the removed MPU or service module on the antistatic mat.

7.     Install a new MPU or service module. For the MPU or service module installation procedure, see "Installing FRUs."

Figure 6-5 Removing a service module

(1) Loosen the captive screw	(2) Rotate the ejector levers outward
(3) Pull the service module slowly out of the slot along the guide rails

 

Figure 6-6 Removing an S12504R MPU

(1) Loosen the captive screw	(2) Pivot up the handle of the MPU
(3) Pull the MPU slowly out of the slot along the guide rails

 

Replacing a fabric module

CAUTION: ·     Remove the fan tray before you remove a fabric module. Reinstall the fan tray immediately after you finish installing or replacing a fabric module on an operating device, and make sure the other fabric slots have a fabric module or filler panel installed. After the fan tray starts operating, you can replace or install fabric modules whose slots are covered by the other fan tray. ·     The smart speed adjustment feature increases the fan speed when only one fan tray is operating. Take noise protection measures such as wearing an earmuff or earplug. In addition, make good preparation before hot swapping a fabric module to minimize the operation time.

 

To replace a fabric module:

1.     Prepare an antistatic mat to place the removed fabric module.

2.     Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded. For more information, see "Installing FRUs."

3.     Press the buttons on the ejector levers to release the ejector levers. Simultaneously rotate outward the ejector levers and pull the fabric module part way out of the slot.

4.     Holding the fabric module bottom with the right hand and the middle part with the left hand, pull the fabric module slowly out of the slot along the guide rails.

5.     Place the removed fabric module on the antistatic mat.

6.     Install a new fabric module. For the fabric module installation procedure, see "Installing FRUs."

Figure 6-7 Replacing a fabric module (S12516R)

(1) Press the buttons on the ejector levers
(2) Pull the fabric module slowly out of the slot along the guide rails

 

Removing an interface module

CAUTION: ·     To avoid cable damage, remove the cables from the module before removing the module. ·     Wear an ESD wrist strap when you install an interface module and make sure the strap makes good skin contact and is reliably grounded. ·     To avoid device damage, do not use excessive force when you install an interface module. ·     Do not install an interface module when the device is starting up. You can hot swap an interface module during operation of the device. ·     If you are not to install a new module after removing the original one, install a filler panel in the slot to prevent dust and ensure good ventilation in the device.

 

To remove an interface module:

1.     As shown by callouts 1 and 2 in Figure 6-8, use both thumbs to press the release button on each ejector lever and use forefingers to release the ejector lever from the module.

2.     Fully open the ejector levers to disengage the interface module from the device connector.

3.     As shown by callout 3 in Figure 6-8, use both hands to slowly take the module out.

4.     Place the removed module on an anti-static mat or in an anti-static bag.

Figure 6-8 Removing an interface module

 

Replacing a fan tray

WARNING! ·     To avoid bodily injury, do not touch the spinning fans when you replace the fan tray. ·     When you hot swap a fan tray, the fan rotation speed of the remaining fan trays automatically increases and the fan trays make louder noise. Take protection measures such as wearing an earmuff or earplug. In addition, make good preparations before the hot swapping to minimize the operation time. ·     Ensure electricity safety when you hot swap a fan tray.

 

	CAUTION: ·     To prevent dust from entering the device, keep the old fan tray installed in the chassis until a new fan tray is ready to be installed. ·     Before hot swapping a fan tray on the device, make sure the other fan tray is operating correctly.

 

To replace a fan tray

1.     Prepare an antistatic mat to place the fan tray to be removed.

2.     Put on an ESD wrist strap, and make sure the wrist strap makes good skin contact and is reliably grounded. For more information, see "Installing FRUs."

3.     Loosen the captive screws on the fan tray, as shown by callout 1 in Figure 6-9.

4.     Holding the handles on the fan tray, pull the fan tray part way out of the slot. After the fans stop rotating, support the fan tray bottom and pull it out from the chassis.

5.     Place the removed fan tray on the antistatic mat.

6.     Install a new fan tray. For more information, see "Installing FRUs."

Figure 6-9 Removing a fan tray (S12516R)

(1) Loosen the captive screws on the fan tray	(2) Pull the fan tray slowly out of the chassis

 

Replacing a transceiver module

	WARNING! Disconnected optical fibers or transceiver modules might emit invisible laser light. Do not stare into beams or view directly with optical instruments when the device is operating.

 

	CAUTION: ·     Do not touch the golden plating on a transceiver module. ·     Make sure the transceiver modules at the two ends of an optical fiber are the same model.

 

Replacing an SFP+/SFP/QSFP+/QSFP28 transceiver module

1.     Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded.

For more information, see "Installing FRUs."

2.     Remove the optical fibers from the module.

3.     Pivot the clasp outward.

For a plastic pull latch, skip this step.

4.     Grasp the clasp on the module and carefully pull the module out of the slot.

5.     Insert the dust plugs into the removed module, and put the remove module into its original packaging materials.

6.     Install a new SFP+/SFP/QSFP+/QSFP28 transceiver module in the port. For the installation procedure, see "Installing FRUs."

If you are not to install a new SFP+/SFP/QSFP+/QSFP28 transceiver module in the port, install the dust plug that is provided with the service module into the port, to prevent particles from entering the port.

Replacing an SFP+/QSFP+/QSFP28/QSFP+ to SFP+ copper cable

	CAUTION: ·     The bend radius of the cable must be a minimum of eight times the cable diameter. ·     If the cable cannot be removed or installed, verify that the removal or installation procedures are correct. Do not use excessive force. ·     Pull the pull latch horizontally for smooth removal and avoiding damage.

 

To replace an SFP+/QSFP+/QSFP28/QSFP+ to SFP+ copper cable:

1.     Wear an ESD wrist strap, and make sure it makes good skin contact and is reliably grounded. For more information, see "Installing FRUs."

2.     Gently press the cable connector in, and then pull the pull latch on the cable outward to pull out the cable connector.

3.     Install a new SFP+/QSFP+/QSFP28/QSFP+ to SFP+ copper cable in the port. For the installation procedure, see "Installing FRUs."

If you are not to install a new SFP+/QSFP+/QSFP28/QSFP+ to SFP+ copper cable in the port, insert the dust plug that is provided with the service module into the port, to prevent particles from entering the port.