Juniper MX240 - UPGRADING Manuale utente

Upgrading MX240, MX480, and MX960

3D Universal Edge Router Fan Trays and

Power Supplies

December 2010

Part Number: 530-036423

Revision 02

This document describes the necessary steps to be taken to upgrade any Juniper Networks

MX Series 3D Universal Edge Router chassis to higher capacity cooling and higher capacity

power. Step-by-step descriptions are given for replacement of the various parts in the

chassis. All of these upgrades can be performed while the system is operational, but it

is important to follow the complete process through.

NOTE: Combinations of regular-capacity and high-capacity supplies and fan

trays are not supported outside of the upgrade window.

CAUTION: The router cannot be powered from AC and DC power supplies

simultaneously. The first type of power supply detected by the router when

initially powered on determines the type of power supply allowed by the

router. All installed power supplies of the other type are disabled by the router.

If you install a power supply of the other type while the router is operating,

the router disables the power supply and generates an alarm.

NOTE: Before upgrading, the MX Series router must be running Junos OS

Release 10.0 R1 or later to support high-capacity fan trays. Junos OS Release

10.0 R2 is required to support the MX240 and MX480 AC and DC high capacity

power supplies, and the MX960 AC high- capacity power supplies. Junos OS

Release 10.2 R1 is required to support the MX960 DC high-capacity power

supplies.

The rating upgrade is needed to ensure the chassis rating is in line with the optional higher

capacity power supplies that may be installed in your MX Series router. The upgrade kit

contains the following items; they are also available as spares:

•Up to four power supplies

•Up to two fan trays

•Optional one filter tray (MX960)

•Rating label

In this guide, three areas are addressed, and all three have to be completed before your

MX Series router is fully enabled for higher capacity power and cooling.

•Cooling

•Power

•Rating label change

Higher capacity cooling is required for some types of DPCs or MPCs, and higher capacity

power is required for a higher number of newer MPCs. Note that there are minimum

software revision requirements for the cooling and power modules. Without this minimum

software revision, these new parts are not supported and likely not detected and managed

properly.

NOTE: Before upgrading, the MX Series router must be running Junos OS

Release 10.0 R1 or later to support high-capacity fan trays. Junos OS Release

10.0 R2 is required to support the MX240 and MX480 AC and DC high capacity

power supplies, and the MX960 AC high- capacity power supplies. Junos OS

Release 10.2 R1 is required to support the MX960 DC high-capacity power

supplies.

Contents FanTrayUpgradeOverview............................................4

ReplacingtheMX240FanTray.........................................5

ReplacingtheMX480FanTray.........................................7

ReplacingtheMX960FanTrays........................................8

UpgradingtheMX960AirFilterTray.....................................11

RemovingtheMX960AirFilter.........................................11

Installing the MX960 High-Capacity Tray and Filter . . . . . . . . . . . . . . . . . . . . . . . . 12

FanTrayPowerRequirements.........................................13

PowerSupplyZoneOverview..........................................13

Upgrading the MX240 and MX480 AC Power Supplies . . . . . . . . . . . . . . . . . . . . . 14

Removing the MX240 and MX480 AC Power Supplies . . . . . . . . . . . . . . . . . . . . . 14

Installing the MX240 and MX480 AC High-Capacity Power Supplies . . . . . . . . . . 15

Upgrading the MX240 and MX480 DC Power Supplies . . . . . . . . . . . . . . . . . . . . . 16

Removing the MX240 and MX480 DC Power Supplies . . . . . . . . . . . . . . . . . . . . . 16

Setting the MX240 and MX480 DC High-Capacity Power Supply Input Mode

Switch.........................................................17

Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays

Installing the MX240 and MX480 DC High-Capacity Power Supplies . . . . . . . . . . 19

Upgrading the MX960 AC Power Supplies Overview . . . . . . . . . . . . . . . . . . . . . . . 22

Removing the MX960 AC Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Installing the MX960 AC High-Capacity Power Supplies . . . . . . . . . . . . . . . . . . . . 25

Upgrading the MX960 DC Power Supplies Overview . . . . . . . . . . . . . . . . . . . . . . . 27

RemovinganMX960DCPowerSupply.................................28

Installing the MX960 DC High-Capacity Power Supplies . . . . . . . . . . . . . . . . . . . 30

JUNOS Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

RequestingTechnicalSupport.........................................33

Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

OpeningaCasewithJTAC........................................34

RevisionHistory....................................................34

Fan Tray Upgrade Overview

The MX Series high-capacity fan trays satisfy cooling requirements for high-density DPCs

and MPCs, and must be upgraded for proper cooling (see Figure 1 on page 4, Figure 2

on page 4, and Figure 3 on page 5). Additionally, for the MX960 router, you must

upgrade both fan trays and the filter tray.

NOTE: Before upgrading, the MX Series router must be running Junos OS

Release 10.0 R1 or later to support high-capacity fan trays.

NOTE: To prevent overheating, install the replacement fan tray immediately

after removing the existing fan tray.

Figure 1: MX960 High-Capacity Fan Tray

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Figure 2: MX480 High-Capacity Fan Tray

Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays

Figure 3: MX240 High-Capacity Fan Tray

Replacing the MX240 Fan Tray

To remove the fan tray (see Figure 4 on page 6 ):

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

2. Loosen the captive screws on the fan tray faceplate.

3. Grasp the fan tray handle and pull it out approximately 1 to 3 inches.

4. Press the latch located on the inside of the fan tray to release it from the chassis.

5. Place one hand under the fan tray to support it and pull the fan tray completely out

of the chassis.

WARNING: To avoid injury, keep tools and your fingers away from the fans

as you slide the fan tray out of the chassis. The fans might still be spinning.

NOTE: To prevent overheating, install the replacement fan tray immediately

after removing the existing fan tray.

Replacing the MX240 Fan Tray

Figure 4: Removing the Fan Tray

To install the fan tray (see Figure 5 on page 6):

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect

the strap to one of the ESD points on the chassis.

2. Grasp the fan tray on each side and insert it straight into the chassis. Note the correct

orientation by the "this side up" label on the top surface of the fan tray.

3. Tighten the captive screws on the fan tray faceplate to secure it in the chassis.

Figure 5: Reinstalling a Fan Tray

Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays

Replacing the MX480 Fan Tray

To remove the fan tray (see Figure 6 on page 7):

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

2. Loosen the captive screws on the fan tray faceplate.

3. Grasp the fan tray handle and pull it out approximately 1 to 3 inches.

4. Press the latch located on the inside of the fan tray to release it from the chassis.

5. Place one hand under the fan tray to support it and pull the fan tray completely out

of the chassis.

WARNING: To avoid injury, keep tools and your fingers away from the fans

as you slide the fan tray out of the chassis. The fans might still be spinning.

NOTE: To prevent overheating, install the replacement fan tray immediately

after removing the existing fan tray.

Figure 6: Removing the Fan Tray

Replacing the MX480 Fan Tray

To install the fan tray (see Figure 7 on page 8):

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect

the strap to one of the ESD points on the chassis.

2. Grasp the fan tray on each side, and insert it straight into the chassis. Note the correct

orientation by the "this side up" label on the top surface of the fan tray.

3. Tighten the captive screws on the fan tray faceplate to secure it in the chassis.

Figure 7: Reinstalling a Fan Tray

Replacing the MX960 Fan Trays

It is required to upgrade both MX960 fan trays, as well as the fan filter tray.

NOTE: To prevent overheating, one fan tray should always be installed and

operational during the upgrade process.

To remove the upper or lower fan tray:

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect

the strap to one of the ESD points on the chassis.

2. Loosen the captive screw on each side of the fan tray faceplate.

3. Grasp both sides of the fan tray and pull it out approximately 1 to 3 inches.

Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays

4. Press on the two latches located on the inside of the fan tray to release the fan tray

from the chassis.

5. Place one hand under the fan tray to support it, and pull the fan tray completely out

of the chassis.

WARNING: To avoid injury, keep tools and your fingers away from the fans

as you slide the fan tray out of the chassis. The fans might still be spinning.

NOTE: To prevent overheating, install the replacement fan tray immediately

after removing the existing fan tray.

Figure 8: Removing an Upper Fan Tray

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To install the fan trays (see Figure 5 on page 6 and Figure 9 on page 10):

1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect

the strap to one of the ESD points on the chassis.

2. Grasp the fan tray on each side, and insert it straight into the chassis. Note the correct

orientation by the "this side up" label on the top surface of the fan tray.

Replacing the MX960 Fan Trays

3. Tighten the captive screws on each side of the fan tray faceplate to secure it in the

chassis.

4. Lower the standard cable manager back into position, if necessary.

Figure 9: Installing an Upper Fan Tray

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ACO/LT

YELLOW ALARM

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NC NO

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101010101011

Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays

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