Chassis Fan Tray Removal
and Replacement Guide
For the Switch 4007R 8-Slot Chassis
This guide describes how to remove and install a fan tray (Model Number
3CB9EF) for the Switch 4007R 8-slot chassis.
WARNING: The Switch 4007R fan tray must be installed and removed
only by trained service personnel.
You can install a new fan tray in your Switch 4007R chassis while the
power is on (which is referred to as hot swapping).
Fan Tray Description The Switch 4007R chassis and its modules are cooled by fan trays. The
8-slot chassis contains two fan trays, each of which contains three fans
(Figure 1). Four fans cool the switch fabric modules, interface modules,
and management modules and the two fans cool the power supply bay
area.
http://www.3com.com/
Part No.10014113
Published February 2002
2 Chassis Fan Tray Removal and Replacement Guide
Figure 1 Location of Fan Trays in the Rear of the Switch 4007R 8-slot Chassis
Module and
power supply
fan trays
Spring-loaded
screw
There are no user-serviceable parts on the fan trays. If these components
fail, remove them as described in this document and return the
components to your supplier. Keep replacement fan trays at your site so
that they are available if needed.
To be able to remove and replace a fan tray, and for proper ventilation, keep
the rear of the chassis at least
91.4 cm (36 in.)
from any obstruction, such as
a wall or another rack.
Chassis Fan Tray Removal and Replacement Guide 3
Removing a Fan Tray To remove a fan tray from the Switch 4007R 8-slot chassis, follow these
steps:
1 Using a flat-blade screwdriver, loosen the six spring-loaded screws that
attach the fan tray to the rear of the chassis (Figure 2).
Figure 2 Location of the Six Fan Tray Spring-loaded Screws
Spring-loaded
screws
2 Grasp the two handles on the fan tray, and firmly pull the fan tray toward
you (Figure 3).
4 Chassis Fan Tray Removal and Replacement Guide
Figure 3 Removing the Fan Tray Using the Handles
CAUTION: Before you completely remove the fan tray, wait until all the
fans in the fan tray stop rotating.
Carefully pull the fan tray straight out from the chassis, making sure that you
3
do not damage the connector and guide pin on the rear of the fan tray
(Figure 5).
Fan tray
handles
Installing a Fan Tray Follow the instructions in this section to unpack and install a new fan tray.
Unpacking
To unpack a fan tray:
1 Open the shipping box and remove the fan tray.
2 Inspect the fan tray for damage. If the fan tray, its connector, or its guide
pin (Figure 4) appear to be damaged, repack the fan tray in the shipping
box and contact your local supplier.
All shipping boxes are reusable. After you remove all contents, replace
the packing materials and store the box for future use.
Chassis Fan Tray Removal and Replacement Guide 5
Installing
You can install a new fan tray in your Switch 4007R chassis while the
power is on (which is referred to as hot swapping).
To install a new fan tray:
1 Grasp the two handles on the fan tray and then face the rear of the
chassis.
2 Locate the guide pin and connector on the fan tray (Figure 4).
Figure 4 Fan Tray Connector and Guide Pin
Fan tray
guide pin
Handle
Fan tray
connector
3 Slide the fan tray into the chassis (Figure 5).
6 Chassis Fan Tray Removal and Replacement Guide
Figure 5 Installing the Fan Tray into the Chassis Using the Handles
4 Align the fan tray connector and the backplane connector.
5 Use the guide pin on the fan tray and the guide pin holes on the
backplane of the chassis and gently push the fan tray inward until the fan
tray connector and backplane connector engage.
Fan tray
handles
You feel a slight resistance as the connectors engage.
CAUTION: If the resistance is too great, the fan tray connector and
backplane connector may not be aligned properly. Do not force the fan
tray inward or you can damage the connectors. If necessary, remove and
reinsert the fan tray, ensuring that the connectors are properly aligned.
6 Verify that the fan tray is flush with the back of the chassis. If the fan tray
and the chassis are not aligned, remove the fan tray and reseat it.
7 Using a flat-blade screwdriver, tighten the spring-loaded screws to secure
the fan tray to the chassis (Figure 2).
The fans begin rotating the moment that you power on the chassis or
insert a fan tray into a powered-on chassis.
8 Visually inspect all installed fans to verify that each is turning without
interruption. If a fan is not running, shut the power off and remove and
reinsert the fan tray.
Chassis Fan Tray Removal and Replacement Guide 7
Operating Guidelines Follow these operating guidelines for the fan trays for the Switch 4007R
8-slot chassis.
CAUTION: For the module bay area and the power supply bay area, if a
fan in one fan tray fails, a trap message alerts you to replace the fan tray
within 48 hours. For the power supply bay area, if a fan in one fan tray
fails and the temperature is 45 °C (113 °F) or greater, a trap message
alerts you to replace the fan tray immediately. The Switch 4007R sends a
trap message and can continue to run if one fan fails in one fan tray.
However, if a second or third fan fails, in that same fan tray, no trap
message is generated.
Locating 3Com
User Documentation
The Switch 4007R Getting Started Guide is available in Adobe Acrobat
Portable Document Format (PDF) format on the 3Com Documentation
CD-ROM.
The CD-ROM also contains:
Additional Switch 4007R documentation in Adobe Acrobat format
■
Adobe Acrobat Reader and Reader installation instructions
■
If you have difficulty installing the Acrobat Reader, use an Internet
browser to download the Reader from the Adobe home page at
http://www.Adobe.com
You can view additional 3Com technical documentation on the 3Com
home page at
http://www.3com.com
.
8 Chassis Fan Tray Removal and Replacement Guide
3Com Corporation LIMITED WARRANTY
Fan Tray (Model Number 3CB9EF) for the Switch 4007R 8-slot Chassis
H
ARDWARE
SOFTWARE
OBTAINING WARRANTY
ERVICE
S
3Com warrants to the end user (“Customer”) that this hardware product will be free from defects in
workmanship and materials, under normal use and service, for one (1) year from the date of purchase from
3Com or its authorized reseller.
3Com’s sole obligation under this express warranty shall be, at 3Com’s option and expense, to repair the
defective product or part, deliver to Customer an equivalent product or part to replace the defective item, or if
neither of the two foregoing options is reasonably available, 3Com may, in its sole discretion, refund to
Customer the purchase price paid for the defective product. All products that are replaced will become the
property of 3Com. Replacement products may be new or reconditioned. 3Com warrants any replaced or
repaired product or part for ninety (90) days from shipment, or the remainder of the initial warranty period,
whichever is longer.
3Com warrants to Customer that each software program licensed from it will perform in substantial
conformance to its program specifications, for a period of ninety (90) days from the date of purchase from
3Com or its authorized reseller. 3Com warrants the media containing software against failure during the
warranty period. No updates are provided. 3Com's sole obligation under this express warranty shall be, at
3Com's option and expense, to refund the purchase price paid by Customer for any defective software
product, or to replace any defective media with software which substantially conforms to applicable 3Com
published specifications. Customer assumes responsibility for the selection of the appropriate applications
program and associated reference materials. 3Com makes no warranty or representation that its software
products will meet Customer’s requirements or work in combination with any hardware or applications
software products provided by third parties, that the operation of the software products will be uninterrupted
or error free, or that all defects in the software products will be corrected. For any third-party products listed
in the 3Com software product documentation or specifications as being compatible, 3Com will make
reasonable efforts to provide compatibility, except where the non-compatibility is caused by a “bug” or defect
in the third party's product or from use of the software product not in accordance with 3Com’s published
specifications or user manual.
THIS 3COM PRODUCT MAY INCLUDE OR BE BUNDLED WITH THIRD-PARTY SOFTWARE, THE USE OF WHICH IS
GOVERNED BY A SEPARATE END USER LICENSE AGREEMENT. THIS 3COM WARRANTY DOES NOT APPLY TO
SUCH THIRD-PARTY SOFTWARE. FOR THE APPLICABLE WARRANTY, PLEASE REFER TO THE END USER LICENSE
AGREEMENT GOVERNING THE USE OF SUCH SOFTWARE.
Customer must contact a 3Com Corporate Service Center or an Authorized 3Com Service Center within the
applicable warranty period to obtain warranty service authorization. Dated proof of purchase from 3Com or
its authorized reseller may be required. Products returned to 3Com's Corporate Service Center must be
pre-authorized by 3Com with a Return Material Authorization (RMA) number or User Service Order (USO)
number marked on the outside of the package, and sent prepaid and packaged appropriately for safe
shipment, and it is recommended that they be insured or sent by a method that provides for tracking of the
package. Responsibility for loss or damage does not transfer to 3Com until the returned item is received by
3Com. The repaired or replaced item will be shipped to Customer, at 3Com's expense, not later than thirty
(30) days after 3Com receives the defective product.
3Com shall not be responsible for any software, firmware, information, or memory data of Customer
contained in, stored on, or integrated with any products returned to 3Com for repair, whether under warranty
or not.
A
DDITIONAL SERVICES
W
ARRANTIES EXCLUSIVE
Telephone Support, with coverage for basic troubleshooting only, will be provided for ninety (90) days, on a
commercially reasonable efforts basis. Telephone support from 3Com is available from 3Com only if Customer
purchased this product directly from 3Com, or if Customer’s reseller is unable to provide telephone support.
Please refer to the Technical Support appendix in the Getting Started guide for telephone numbers.
3Com’s Web and Bulletin Board Services are available at no charge. They provide software and firmware
upgrades, a bug list, and technical information about 3Com products.
IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR
BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID,
AT 3COM’S OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND
REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS, EXPRESS
OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING
WARRANTIES, TERMS, OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
SATISFACTORY QUALITY, CORRESPONDENCE WITH DESCRIPTION, AND NONINFRINGEMENT, ALL OF WHICH
ARE EXPRESSLY DISCLAIMED. 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME
FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, OR USE OF
ITS PRODUCTS.
3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT
THE ALLEGED DEFECT OR MALFUNCTION IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY
CUSTOMER’S OR ANY THIRD PERSON’S MISUSE, NEGLECT, IMPROPER INSTALLATION, OR TESTING,
UNAUTHORIZED ATTEMPTS TO OPEN, REPAIR, OR MODIFY THE PRODUCT, OR ANY OTHER CAUSE BEYOND
THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING, OTHER HAZARDS, OR ACTS OF
GOD.
Dead- or Defective-on-Arrival. In the event a product completely fails to function or exhibits a defect in
materials or workmanship within the first forty-eight (48) hours of installation but no later than thirty (30) days
after the date of purchase, and this is verified by 3Com, it will be considered dead- or defective-on-arrival
(DOA) and a replacement shall be provided by advance replacement. The replacement product will normally be
shipped not later than three (3) business days after 3Com’s verification of the DOA product, but may be
delayed due to export or import procedures. The shipment of advance replacement products is subject to local
legal requirements and may not be available in all locations. When an advance replacement is provided and
Customer fails to return the original product to 3Com within fifteen (15) days after shipment of the
replacement, 3Com will charge Customer for the replacement product, at list price.
Advance Replacement is provided for ninety (90) days, after which time it may be available for a specified fee.
3Com will make commercially reasonable efforts to ship the replacement product not later than five (5)
business days after receiving the request for advance replacement, but may be delayed due to product availability or export or import procedures. The shipment of advance replacement products is subject to local legal
requirements and may not be available in all locations. When an advance replacement is provided and Customer fails to return the original product to 3Com within fifteen (15) days after shipment of the replacement,
3Com will charge Customer for the replacement, at list price. This advance replacement is different from the
fee-based Advance Hardware Replacement Service, which is available as a contracted service offering.
INCLUDED SERVICES:
Telephone Support,
the date of purchase, on a commercially reasonable efforts basis. Please refer to the Technical Support
appendix in the Getting Started Guide for telephone numbers.
3Com’s Web and Bulletin Board Services provide 3Knowledgebase, bug tracking, documentation, release
notes, and some software maintenance releases at no charge.
with coverage for basic troubleshooting only, will be provided for ninety (90) days from
W
ARRANTIES EXCLUSIVE
L
IMITATION OF LIABILITY
D
ISCLAIMER
IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER'S SOLE REMEDY FOR
BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID,
AT 3COM'S OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND
REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS, EXPRESS
OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING
WARRANTIES, TERMS, OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
SATISFACTORY QUALITY, CORRESPONDENCE WITH DESCRIPTION, AND NON-INFRINGEMENT, ALL OF WHICH
ARE EXPRESSLY DISCLAIMED. 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME
FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE OR USE OF ITS
PRODUCTS.
3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT
THE ALLEGED DEFECT OR MALFUNCTION IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY
CUSTOMER'S OR ANY THIRD PERSON'S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING,
UNAUTHORIZED ATTEMPTS TO OPEN, REPAIR OR MODIFY THE PRODUCT, OR ANY OTHER CAUSE BEYOND
THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING, POWER CUTS OR OUTAGES, OTHER
HAZARDS, OR ACTS OF GOD.
TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY
LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL,
CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR
PROFITS, LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING OUT OF
OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR
INTERRUPTION OF ITS PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE
PURCHASE PRICE PAID, AT 3COM'S OPTION. THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE
AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.
Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or the
limitation of incidental or consequential damages for certain products supplied to consumers, or the limitation
of liability for personal injury, so the above limitations and exclusions may be limited in their application to you.
When the implied warranties are not allowed to be excluded in their entirety, they will be limited to the
duration of the applicable written warranty. This warranty gives you specific legal rights which may vary
depending on local law.
G
OVERNING LAW
This Limited Warranty shall be governed by the laws of the State of California, U.S.A., excluding its conflicts of
laws principles and excluding the United Nations Convention on Contracts for the International Sale of Goods.
3Com Corporation, 5400 Bayfront Plaza, P.O. Box 58145, Santa Clara, CA 95052-8145 (408) 326-5000
EMISSIONS COMPLIANCE
TATEMENTS FOR CLASS
S
RODUCTS
P
Federal Communications
Commission Notice
Canadian Emissions Requirements This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment
VCCI Class A Compliance
EMC D
IRECTIVE STATEMENT
EMC Directive Compliance This equipment was tested and found to conform to the Council Directive 89/336/EEC for electromagnetic
A
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user will be required to correct the interference at
his own expense.
Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du
Canada.
This is a Class A product based on the standard of the Voluntary Control Council for Interference by
Information Technology Equipment (VCCI). If this equipment is used in a domestic environment, radio
disturbance may arise. When such trouble occurs, the user may be required to take corrective actions.
compatibility. Conformity with this Directive is based upon compliance with the following harmonized
standards:
EN 55022 Limits and Methods of Measurement of Radio Interference
EN 50082-1 Electromagnetic Compatibility Generic Immunity Standard:
Residential, Commercial, and Light Industry
Warning: This is a Class A product. In a domestic environment, this product may cause radio interference, in
which case you may be required to take adequate measures.
LOW V
OLTAGE DIRECTIVE
TATEMENT
S
Low Voltage Directive Compliance This equipment was tested and found to conform to the Council Directive 72/23/EEC for safety of electrical
equipment. Conformity with this Directive is based upon compliance with the following harmonized
standard:
EN 60950 Safety of Information Technology Equipment
Chassis Fan Tray Removal and Replacement Guide 11
G
ENERAL APPROVAL
TATEMENT FOR
S
UK General Approval Statement This equipment is manufactured to the international Safety Standard EN60950 and is approved in the UK
A
USTRALIAN
RAMEWORKS STATEMENT
F
Australian EMC Frameworks
UK
EMC
Compliance
under the General Approval Number NS/G/12345/J/100003 for indirect connection to the public
telecommunication network.
This product conforms to the EMC Frameworks and meets the Class A limits of AS3548.
12 Chassis Fan Tray Removal and Replacement Guide
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