Juniper MX240 User manual

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.
1Copyright © 2010, Juniper Networks, Inc.
All manuals and user guides at all-guides.com
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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
Copyright © 2010, Juniper Networks, Inc.2
Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays
All manuals and user guides at all-guides.com

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
3Copyright © 2010, Juniper Networks, Inc.
All manuals and user guides at all-guides.com

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
g004707
Figure 2: MX480 High-Capacity Fan Tray
Copyright © 2010, Juniper Networks, Inc.4
Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays
All manuals and user guides at all-guides.com

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.
5Copyright © 2010, Juniper Networks, Inc.
Replacing the MX240 Fan Tray
All manuals and user guides at all-guides.com

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
Copyright © 2010, Juniper Networks, Inc.6
Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays
All manuals and user guides at all-guides.com
all-guides.com

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
7Copyright © 2010, Juniper Networks, Inc.
Replacing the MX480 Fan Tray
All manuals and user guides at all-guides.com

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.
Copyright © 2010, Juniper Networks, Inc.8
Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays
All manuals and user guides at all-guides.com

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.
9Copyright © 2010, Juniper Networks, Inc.
Replacing the MX960 Fan Trays
All manuals and user guides at all-guides.com

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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Copyright © 2010, Juniper Networks, Inc.10
Upgrading MX240, MX480, and MX960 3D Universal Edge Router Power Supplies and Fan Trays
All manuals and user guides at all-guides.com