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Maintenance and Repair

2-11

Maintenance and 
Repair

This section includes maintenance and repair information for the 8-Slot chassis.

Preventive Maintenance

3Com recommends the following procedures for preventive maintenance:

■

Observe the environmental requirements listed in Appendix A. Temperatures 
outside the recommended range can impair reliability and cause diskette 
access errors.

■

Observe ESD guidelines whenever handling modules.

■

Keep the area around the NETBuilder II system clean. Avoid accumulated 
dust, especially around the air intake vents.

■

If the system fails, an immediate memory dump may help diagnose the 
problem. Contact 3Com Technical Support for memory dump information.

Replacing the

Power Supply

If any component other than the fuse fails in the power supply, you must 
replace the entire power supply.

You will need a Phillips screwdriver that fits a #6-32 screw.

To replace the power supply in the 8-Slot chassis, follow these steps:

WARNING:

 Do not open the power supply. It contains hazardous voltages. 

There are no user-serviceable parts inside.

VORSICHT: 

Öffnen sie niemals das Netzteil. Hochspannung! Es sind keine zu 

wartenden Teile enthalten.

AVERTISSEMENT:

 Ne pas ouvrir ce bloc d’alimentation. Tensions dangereuses 

à l’intérieur. Ne contient aucune pièce que l’utilisateur puisse rèparer.

PELIGRO:

 No abra fuente de alimentación. Contiene alta tensión. No hay partes 

para reemplazar adentro.

1

Turn off the system and unplug the power cord from the outlet and from the 
power supply.

It is not necessary to take your chassis out of the rack if it is rack-mounted 
because the power supply can be removed from the back panel. 

2

Remove the six screws that secure the power supply module to the back of the 
chassis.

3

Grasp the handle on the power supply module and pull it out of the chassis. 
You may feel a slight resistance as the power supply connector disconnects from 
the backplane.

4

Slide the new power supply into the chassis and press it firmly to make sure the 
power supply connector engages the backplane connector.

5

Reinstall the six screws to secure the new power supply module in the chassis.

6

Make sure the power switch is off (O is pressed down). Plug the power cord 
into the power supply and the outlet.

7

Turn on the system.

Summary of Contents for NETBuilder II

Page 1: ... http www 3com com Installing the NETBuilder II Bridge Router For EZBuilt systems and base chassis Part No 09 0492 003 Published May 1997 ...

Page 2: ...ontact 3Com and a copy will be provided to you Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com NETBuilder and NETBuilder II are registered trademarks of 3Com Corporation 3TECH is a trademark of 3Com Corporation 3ComFacts is a service mark of 3Com Corporation CompuServe is a registered trademark of Co...

Page 3: ...the Class A requirement can be marketed for use in an industrial or a commercial area A system that meets the more stringent Class B requirement can be marketed for use in a residential area in addition to an industrial or a commercial area The end user is generally held responsible for ensuring that his system is suitable for its environment as stated in the above paragraph and bears the financia...

Page 4: ...ets or exceeds the following technical standards EN 55022 Limits and methods of measurement of radio interference characteristics of information technology equipment EN 50082 1 Electromagnetic compatibility generic immunity standard part 1 residential commercial and light industry A Declaration of Conformity detailing the above standards has been made and is on file at 3Com Corporation ...

Page 5: ...train Relief Bracket 1 6 Chassis Description 1 7 Front Panel 1 7 LCD and LCD Control Panel 1 7 POWER and STATUS LEDs 1 8 Back Panel 1 8 Floppy Disk Drive 1 8 Backplane 1 8 Power Supply Module 1 9 Chassis Cover 1 9 Maintenance and Repair 1 10 Preventive Maintenance 1 10 Replacing a Power Supply 1 10 Replacing a Fuse 1 12 Replacing a Floppy Disk Drive 1 13 Replacing the Backplane 1 15 Replacing the ...

Page 6: ...e Display Board 2 16 3 NETBUILDER II 8 SLOT EXTENDED BRIDGE ROUTER Installing the Extended Chassis 3 1 Unpacking Your Chassis 3 1 Verifying Electrical Requirements 3 2 Installing the Flash Memory Drive Base Chassis with CEC 20 Only 3 2 Installing the DPE or CEC 20 Module Base Chassis Only 3 2 Installing I O Modules 3 2 Mounting the Extended Chassis 3 2 Installing on a Tabletop 3 2 Installing in a ...

Page 7: ...ot Chassis A 2 8 Slot Chassis A 3 Extended Chassis A 4 B EMC CONFORMANCE Chassis B 1 Main Processor and I O Modules B 1 Exceptions B 1 NETBuilder II EMC Configuration Exceptions B 2 C TECHNICAL SUPPORT Online Technical Services C 1 World Wide Web Site C 1 3Com Bulletin Board Service C 1 Access by Analog Modem C 2 Access by Digital Modem C 2 3ComFacts Automated Fax Service C 2 3ComForum on CompuSer...

Page 8: ...viii ...

Page 9: ... not assume prior knowledge of 3Com internetworking equipment Each optional I O module has a separate installation guide that provides installation cabling maintenance and troubleshooting information If the information in the release notes shipped with your product differs from the information in this guide follow the release notes Conventions Table 1 describes notice icons that are used throughou...

Page 10: ...2 ABOUT THIS GUIDE ...

Page 11: ...loppy disk drive The NETBuilder II chassis with a DPE module has the flash memory card installed in flash memory drive A on the DPE module The DPE module does not support a floppy disk drive Installing the 4 Slot Chassis This section describes how to install your NETBuilder II 4 Slot chassis Unpacking Your Chassis After you have removed your chassis from the shipping carton verify that you have re...

Page 12: ...der II bridge router If you have the base chassis you must install either module In the EZBuilt system the main processor is already installed Refer to the appropriate main processor module guide for installation instructions Installing I O Modules You can install two types of modules in your 4 Slot chassis regular format and extended format Regular format modules are the width of one slot in the ...

Page 13: ...the other person to attach it to the rack CAUTION Using fewer than three screws on each side of the chassis to secure the rack mount brackets may result in bracket failure and damage that will invalidate the warranty Follow the steps in Figure 1 2 to install your 4 Slot chassis in a rack Figure 1 2 Installing a 4 Slot Chassis in a Rack NETBuilder II NETBuilder II Remove the six pan head screws fro...

Page 14: ...le to 9 pin female PC cable A null modem type cable can be used Figure 1 4 shows the pinouts for a 9 pin female to 25 pin terminal cable A null modem type cable can be used Figure 1 5 shows the pinouts for a 9 pin female to 25 pin male modem cable A straight through type cable can be used WARNING To eliminate cable noise emission in excess of FCC Part 15 Subpart J and EN55022 B this device cable s...

Page 15: ...ansmit Data Receive Data Request to Send Clear to Send Carrier Detect Signal Ground Data Set Ready Data Terminal Ready Receive Data Transmit Data Carrier Detect Clear to Send Request to Send Signal Ground Data Terminal Ready Data Set Ready To CONSOLE port To terminal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 5 4 3 2 1 9 8 7 6 25 pin male connector 9 pin female connector To ...

Page 16: ... Cable Strain Relief Bracket The cable strain relief bracket is a wire form metal bracket This bracket is not necessary for systems mounted on a tabletop but it is recommended for rack mounted systems To install the cable strain relief bracket on a 4 Slot chassis follow these steps no tools are needed 1 Secure the bracket to the rear of the system The ends of the bracket slide into four holes on t...

Page 17: ...D Control Panel The 2 line 24 character alphanumeric LCD displays startup and status messages The LCD control panel consists of four buttons located under the LCD These buttons allow you to perform a reset and for the CEC 20 module to access the Diagnostic Main Menu Performing a reset To perform a reset simultaneously press the outer buttons which are marked Reset Accessing the Diagnostic Main Men...

Page 18: ...open slots can result in overheating of the NETBuilder II system and will invalidate the warranty Floppy Disk Drive The 4 Slot chassis includes a 3 5 inch 135 tracks per inch TPI 4 MB floppy disk drive that supports 1 4 MB and 2 8 MB DOS formatted floppies The drive is located on the right side of the front panel The DPE module does not support the floppy disk drive Press the eject button on the d...

Page 19: ...dge See page 1 12 for information on replacing the fuse The international CEE 22 AC power receptacle is approved for 6 amp operation The connector has three prongs with chassis ground on the middle prong All systems are shipped with power cords if your power cord does not match your requirements contact your network supplier for assistance The power supply module can be removed and replaced easily...

Page 20: ...Phillips screwdrivers one that fits a 10 32 screw to remove the system from the rack and one that fits a 6 32 screw to remove and replace the cover and the power supply To replace the power supply in the 4 Slot chassis follow these steps WARNING Do not open the power supply It contains hazardous voltages There are no user serviceable parts inside VORSICHT Öffnen sie niemals das Netzteil Hochspannu...

Page 21: ...8 Reinstall the cover a Position the cover slightly behind the front of the chassis b Lower the cover and slide it toward the front of the chassis so that it engages the front panel c Secure the cover with the screws you removed earlier from the back and sides of the chassis 9 If your system was previously mounted in a rack reinstall the rack mount brackets on the chassis and remount the system 10...

Page 22: ...tion against fire hazard replace the fuse only with a fuse of the same type and rating Using an incorrect fuse can subject your system to overcurrent conditions resulting in damage or unsafe operating conditions To change the fuse in the power supply follow these steps You will need a small flat head screwdriver 1 Turn the system off and unplug the power cord from the outlet and the power supply 2...

Page 23: ...e switch fuseholder receptacle assembly 9 Make sure the power switch is off O is pressed down Plug the power cord into the power supply and the outlet 10 Turn on the system Replacing a Floppy Disk Drive To replace the floppy disk drive in the 4 Slot chassis follow these steps You will need Phillips screwdrivers of various sizes 1 Turn off the system and unplug the power cord from the outlet and fr...

Page 24: ...rom the chassis a From the front of the chassis remove the two screws that secure the bracket b From inside the chassis remove the screw from the back of the bracket c Slide the bracket toward the back of the chassis and lift it and the floppy disk drive out of the chassis 7 Transfer the bracket from the original floppy disk drive to the new one a Remove the four screws from the sides of the brack...

Page 25: ...the front of the chassis b Lower the cover and slide it toward the front of the chassis so that it engages the front panel c Secure the cover with the screws you removed earlier from the back and sides of the chassis 12 If your system was previously mounted in a rack reinstall the rack mount brackets on the chassis and remount the system 13 Make sure the power switch is off O is pressed down Plug ...

Page 26: ... against the card cage c Reinstall the eight screws that secure the backplane to the card cage 9 Reconnect the display board cable and floppy disk drive cable 10 Reinstall the cover a Position the cover slightly behind the front of the chassis b Lower the cover and slide it toward the front of the chassis so that it engages the front panel c Secure the cover with the screws you removed earlier fro...

Page 27: ...e 1 18 Front Panel Screws on 4 Slot Chassis 5 Slide the display board ribbon cable out of the cable clamp on the bottom of the chassis 6 Remove the display board a Remove the four screws that secure the display board to the front of the chassis b Gently pull the card away from the front panel and disconnect the ribbon cable from the connector on the card 7 Reinstall the display board a Reconnect t...

Page 28: ...assis so that it engages the front panel c Secure the cover with the screws you removed earlier from the back and sides of the chassis 11 If your system was previously mounted in a rack reinstall the rack mount brackets on the chassis and remount the system 12 Make sure the power switch is off O is pressed down Plug the power cord into the power supply and power outlet 13 Turn on the system ...

Page 29: ...floppy disk drive The NETBuilder II chassis with a DPE module has the flash memory card installed in flash memory drive A on the DPE module The DPE module does not support a floppy disk drive Installing the 8 Slot Chassis This section describes how to install your NETBuilder II 8 Slot chassis Unpacking Your Chassis After you have removed your chassis from the shipping carton verify that you have r...

Page 30: ...idge router If you have the base chassis you must install either module In the EZBuilt system the main processor is already installed Refer to the appropriate main processor module guide for installation instructions Installing I O Modules You can install two types of modules in your 8 Slot chassis regular format and extended format Regular format modules are the width of one slot in the chassis E...

Page 31: ... other person to attach it to the rack CAUTION Using fewer than three screws on each side of the NETBuilder II chassis to secure the rack mount brackets may result in bracket failure and damage that will invalidate the warranty Follow the steps in Figure 2 2 to install your 8 Slot chassis in a rack Figure 2 2 Installing an 8 Slot Chassis in a Rack NETBuilder II NETBuilder II Remove the six pan hea...

Page 32: ...le to 9 pin female PC cable A null modem type cable can be used Figure 2 4 shows the pinouts for a 9 pin female to 25 pin terminal cable A null modem type cable can be used Figure 2 5 shows the pinouts for a 9 pin female to 25 pin male modem cable A straight through type cable can be used WARNING To eliminate cable noise emission in excess of FCC Part 15 Subpart J and EN55022 B this device cable s...

Page 33: ...ansmit Data Receive Data Request to Send Clear to Send Carrier Detect Signal Ground Data Set Ready Data Terminal Ready Receive Data Transmit Data Carrier Detect Clear to Send Request to Send Signal Ground Data Terminal Ready Data Set Ready To CONSOLE port To terminal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 5 4 3 2 1 9 8 7 6 25 pin male connector 9 pin female connector To ...

Page 34: ...t match your requirements contact your network supplier for assistance The AC power switch is marked according to international I O convention When you press the I side the switch is on when you press the O side the switch is off Make sure the power switch is turned off O and plug the power cord into the AC power receptacle on the back of the unit Table 2 1 CONSOLE Port Configuration Settings Char...

Page 35: ... ends of the bracket slide into four holes on the back of the chassis see Figure 2 6 Figure 2 6 Installing the Cable Strain Relief Bracket on the 8 Slot Chassis 2 Route all cables from the I O modules through the two arms of the bracket from top to bottom as shown in Figure 2 7 Figure 2 7 Routing Cables through the Strain Relief Bracket on the 8 Slot Chassis 1 2 3 4 8 7 6 5 Insert ends of strain r...

Page 36: ...cessing the Diagnostic Main Menu CEC 20 only To access the Diagnostic Main Menu simultaneously press the two inner buttons which are marked ATTENTION The menu is displayed on the LCD For complete information on the Diagnostic Main Menu refer to the NETBuilder II CEC 20 Module Installation Guide The DPE module does not support the Diagnostic Main Menu POWER and STATUS LEDs Below and to the left of ...

Page 37: ...Press the eject button on the disk drive front panel to eject diskettes The LED on the front panel lights when a floppy diskette is being formatted read or written Do not attempt to eject the diskette when the LED is lit For information on replacing the floppy disk drive see page 2 12 Backplane The backplane consists of a bus that is mounted vertically against the back of the card cage When instal...

Page 38: ...ridge See page 2 12 for information on replacing the fuse The international CEE 22 AC power receptacle is approved for 6 amp operation The connector has three prongs with chassis ground on the middle prong All systems are shipped with power cords if your power cord does not match your requirements contact your network supplier for assistance The power supply module LED indicates that all power sup...

Page 39: ...are no user serviceable parts inside VORSICHT Öffnen sie niemals das Netzteil Hochspannung Es sind keine zu wartenden Teile enthalten AVERTISSEMENT Ne pas ouvrir ce bloc d alimentation Tensions dangereuses à l intérieur Ne contient aucune pièce que l utilisateur puisse rèparer PELIGRO No abra fuente de alimentación Contiene alta tensión No hay partes para reemplazar adentro 1 Turn off the system a...

Page 40: ...rd from the outlet and the power supply 2 Pry the fuseholder cartridge loose from the power switch fuseholder receptacle assembly using a small screwdriver Figure 2 11 Replacing the Fuse in an 8 Slot Chassis 3 Remove the spent fuse from the fuseholder cartridge 4 Replace the old fuse with a new 6 3 A 250 V fast blow fuse 5 mm by 20 mm in size 5 Reinstall the fuseholder cartridge into the power swi...

Page 41: ...k Drive in the 8 Slot Chassis 7 Transfer the bracket from the original floppy disk drive to the new one a Remove the four screws and insulating washers from the sides of the bracket two on each side that secure the original floppy disk drive to the bracket b Slide the floppy disk drive out of the bracket c Slide the new floppy disk drive into the bracket being careful not to dislodge the insulator...

Page 42: ...g the power cord into the power supply and the outlet 13 Turn on the system Replacing the Backplane To replace the backplane in the 8 Slot chassis follow these steps You will need a short 1 Phillips screwdriver and Phillips screwdriver to fit a 6 32 screw 1 Turn off the system and unplug the power cord from the outlet and the power supply 2 If your system is mounted in a rack remove it from the ra...

Page 43: ...ly behind the front of the chassis b Lower the cover and slide it toward the front of the chassis so that it engages the front panel c Secure the cover with the screws you removed earlier from the back and sides of the chassis 12 Reinstall the power supply a Slide the power supply into the chassis and press it firmly to make sure the power supply connector engages the backplane connector b Secure ...

Page 44: ...chassis a Remove the screws from the back and sides of the chassis b Slide the cover toward the back of the chassis and lift it off 5 Remove the front panel a From inside the chassis press down on the locking tabs to release them see Figure 2 15 b Gently tip the panel forward c Lift the panel out of the hinges at the bottom of the chassis Figure 2 15 Locking Tabs for the Front Panel on the 8 Slot ...

Page 45: ...le into the cable clamp 10 Reinstall the front panel a Tip the top edge of the front panel slightly away from the chassis and align the tabs on the bottom with the hinges at the bottom of the chassis b Push the front panel against the chassis until the locking tabs snap into place 11 Reinstall the cover a Position the cover slightly behind the front of the chassis b Lower the cover and slide it to...

Page 46: ...2 18 CHAPTER 2 NETBUILDER II 8 SLOT BRIDGE ROUTER ...

Page 47: ...sk drive The NETBuilder II chassis with a DPE module has the flash memory card installed in flash memory drive A on the DPE module The DPE module does not support a floppy disk drive Installing the Extended Chassis The following sections describe how to install your NETBuilder II Extended chassis Unpacking Your Chassis After you have removed your chassis from the carton verify that you have receiv...

Page 48: ...e main processor already installed Refer to the appropriate main processor module guide for installation instructions Installing I O Modules You can install two types of modules in your Extended chassis regular format and extended format Regular format modules are half as wide as one module slot and can be installed using a card carrier Extended format modules are the entire width of one slot Refe...

Page 49: ...ver to mount the chassis in the rack Because of the weight of the Extended chassis you will need at least two people to complete the procedure The unit will be more secure if installed toward the bottom of the rack Using fewer than four screws on each side of the Extended chassis to secure the brackets to the rack may result in bracket failure and damage that will invalidate the warranty CONSOLE A...

Page 50: ...steps 1 Obtain a cable to connect the device to the CONSOLE port on the front panel of the main processor module Figure 3 4 shows the pinouts for a 9 pin female to 9 pin female PC cable A null modem type cable can be used Figure 3 5 shows the pinouts for a 9 pin female to 25 pin terminal cable A null modem type cable can be used Figure 3 6 shows the pinouts for a 9 pin female to 25 pin male modem ...

Page 51: ... Data Transmit Data Carrier Detect Clear to Send Request to Send Signal Ground Data Terminal Ready Data Set Ready To CONSOLE port To PC serial port 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 5 4 3 2 1 9 8 7 6 Name Name Abbr Abbr Pin Pin 25 pin male or female connector 9 pin female connector 2 3 1 8 7 5 4 6 2 3 4 5 8 7 6 20 TxD RxD RTS CTS CD GND DSR DTR RxD TxD CD CTS RTS GN...

Page 52: ...When you press the I side the switch is on when you press the O side the switch is off Make sure the power switch is turned off O and plug the power cord into the AC power receptacle on the back of the unit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 5 4 3 2 1 9 8 7 6 25 pin male connector 9 pin female connector To CONSOLE port To modem 3 2 4 8 5 7 6 20 Receive Data Transmit ...

Page 53: ...UXILIARY DIAGNOSTIC 4 3 2 1 SELF TEST CPU ACT PKT FWD STATUS CEC A B C A B C D D E F E F ETHERNET 6 PORT 10BASE T A B C A B C D D E F E F ETHERNET 6 PORT 10BASE T A B C A B C D D E F E F ETHERNET 6 PORT 10BASE T A B C A B C D D E F E F ETHERNET 6 PORT 10BASE T NETBuilder II NETBuilder II Grasp the top sides of the panel and pull away from chassis to release ball studs Pull panel out and up to rele...

Page 54: ...is Front Panel The Extended chassis front panel includes A 2 line 24 character alphanumeric LCD 6 status LEDs An access door to the floppy disk drive and the LCD control panel Figure 3 10 shows the front panel of the Extended chassis with the access door open to show the floppy disk drive and the LCD control panel A B C A B C D D E F E F ETHERNET 6 PORT 10BASE T A B C A B C D D E F E F ETHERNET 6 ...

Page 55: ... 20 module to access the Diagnostic Main Menu Performing a reset To perform a reset simultaneously press the outer buttons which are marked Reset Access the Diagnostic Main Menu CEC 20 only To access the Diagnostic Main Menu simultaneously press the two inner buttons which are marked ATTENTION The menu is displayed on the LCD For complete information on the Diagnostic Main Menu refer to the NETBui...

Page 56: ...odule All eight I O slots are covered with card carriers which also serve as filler panels The card carriers allow you to install regular format I O modules into the extended format slots Remove the filler panels when you install I O modules in the slots Keep a filler panel in any slot where you do not plan to install an I O module For information on installing regular format modules in the Extend...

Page 57: ...emory Drive Option A flash memory drive can be installed in the slot immediately above the floppy drive If you have an EZBuilt system with CEC 20 module the flash memory drive is already installed The DPE module has integrated flash memory drives Refer to the documentation shipped with the flash memory for installation information Power Supply The Extended chassis comes with one power supply An ad...

Page 58: ...hich means that you can install or remove and reinstall an I O module without turning the power off to the chassis For details on installing and replacing the backplane see page 3 17 Intake and Exhaust Vents Intake vents are located on the lower right side panel and exhaust vents are located on the back panel of the chassis Make sure that these vents are not blocked or covered when you install you...

Page 59: ...u wartenden Teile enthalten AVERTISSEMENT Ne pas ouvrir ce bloc d alimentation Tensions dangereuses à l intérieur Ne contient aucune pièce que l utilisateur puisse rèparer PELIGRO No abra fuente de alimentación Contiene alta tensión No hay partes para reemplazar adentro It is not necessary to remove the chassis if it is mounted in a rack CAUTION Installing a new power supply with the power switch ...

Page 60: ...y in the Extended chassis follow the steps in Figure 3 14 Figure 3 15 and Figure 3 16 It is not necessary to turn off the power when installing a second power supply Figure 3 14 Removing the Front Panel Insert new power supply while disengaging plunger f DIAGNOSTIC CEC Tighten captive screw g Reinstall power cord and front panel h Spring loaded plunger DIAGNOSTIC CEC Remove front panel a ...

Page 61: ... plunger and slide power supply into chassis Press firmly to engage connectors Filler panel Spring loaded plunger Thread power cord through hole in sheet metal as shown and connect to the power supply Secure cord behind strain relief washer f e CONSOLE AUXILIARY DIAGNOSTIC 4 3 2 1 SELF TEST CPU ACT PKT FWD STATUS CEC A B C A B C D D E F E F ETHERNET 6 PORT 10BASE T Sheet metal with cut out for pow...

Page 62: ...Extended Chassis 3 Loosen the captive screws on the front of the disk drive mounting plate 4 Pull the disk drive mounting bracket out of the chassis Figure 3 18 Removing the Disk Drive Mounting Bracket from the Extended Chassis 5 Remove the four screws on the bottom of the bracket that secure the floppy disk drive to the bracket 6 Install the new disk drive onto the bracket with the four screws 7 ...

Page 63: ...re installed in the chassis 3 Loosen the two captive screws in the back panel and remove the back panel Then remove the 20 mounting screws on the backplane and remove the backplane The screws are identified in Figure 3 19 by small arrows on the backplane Figure 3 19 Replacing the Backplane in the Extended Chassis 4 Install the replacement backplane with the same screws 5 Reinstall the back panel a...

Page 64: ...Display Board on the Extended Chassis To replace the entire display assembly follow the steps in Figure 3 21 Figure 3 21 Replacing the Display Assembly Remove front panel b Turn off system and unplug power cord a Loosen retaining screws and pull board away from assembly Align new board and tighten screws e Reinstall the front panel DIAGNOSTIC CEC c d Remove front panel b Turn off system and unplug...

Page 65: ...cessary to turn off the power to replace a fan assembly Figure 3 22 Replacing the Fan Assembly in the Extended Chassis DIAGNOSTIC Grasp corners of front panel and pull forward to release ball studs NETBuilder II DIAGNOSTIC Loosen captive screw and pull tray out of chassis a b Insert replacement fan and tighten captive screw c Reinstall the front panel d ...

Page 66: ...3 20 CHAPTER 3 NETBUILDER II 8 SLOT EXTENDED BRIDGE ROUTER ...

Page 67: ...f RISC processing custom Application Specific Integrated Circuits ASICs and an 800 Mbps backplane for high performance processing and reliability Hot swappable I O modules Allow you to install or remove and reinstall any I O module without shutting down the system LCD and LCD control panel LCD displays startup and status messages The LCD control panel allows you to reset your NETBuilder II system ...

Page 68: ...ical Requirements for the 4 Slot Chassis Parameter Requirement Input voltage 115 230 VAC 47 to 63 Hz Input voltage ranges 90 to 132 VAC or 180 to 264 VAC Either range accepted without user switching Maximum current consumption 2 1 A 115 VAC 1 0 A 230 VAC Fuse 4 A 250 V fast blow 5 mm x 20 mm Input power 242 W Maximum power dissipation 125 W Heat dissipation 826 BTU hr Table A 4 Environmental Requi...

Page 69: ... Height Weight 18 5 in 17 4 in 7 3 in 50 lbs 47 0 cm 44 2 cm 18 5 cm 22 7 kg Table A 7 Electrical Requirements for the 8 Slot Chassis Parameter Requirement Input voltage 115 230 VAC 47 to 63 Hz Input voltage ranges 90 to 132 VAC or 180 to 264 VAC Either range accepted without user switching Maximum current consumption 3 25 A 115 VAC 1 62 A 230 VAC Fuse 6 3 A 250 V fast blow 5 mm x 20 mm Input powe...

Page 70: ...f the Extended Chassis Length Width Height Weight 49 2 cm 19 4 in 44 2 cm 17 4 in 55 3 cm 21 0 in 42 kg 91 lbs one power supply 50 kg 109 lbs two power supplies Table A 11 Electrical Requirements for the Extended Chassis Parameter Requirement Input voltage 120 230 VAC 47 63 Hz Input voltage ranges 90 132 VAC or 180 264 VAC Either range accepted without user configuration Maximum current consumptio...

Page 71: ... disk drive the main processor module and each installed I O module For the maximum current consumption of the main processor module and each installed I O module refer to each installation guide Table A 13 Maximum Current Consumption of the Extended Chassis Floppy Disk Drive 5 Volts 5 Volts 12 Volts 12 Volts 0 92 A 0 0 A 0 0 A 0 0 A ...

Page 72: ...A 6 APPENDIX A FEATURE SUMMARY AND SPECIFICATIONS ...

Page 73: ...ocessor and I O Modules Older versions of the CEC and I O modules cannot be used in a system if compliance is a requirement The main processor module and all I O modules have been revised to meet these more stringent emissions standards Compliant main processor and I O modules can be identified by the artwork on the I O panel face All compliant modules bear the 3Com block logo on the front panel a...

Page 74: ...ANCE NETBuilder II EMC Configuration Exceptions Replace this page with the most current version from your NETBuilder II I O module packages If there is no date on your release notes a higher part number indicates a later version ...

Page 75: ... Web site 3Com Bulletin Board Service 3ComBBS 3ComFactsSM automated fax service 3ComForum on CompuServe online service World Wide Web Site Access the latest networking information on 3Com Corporation s World Wide Web site by entering our URL into your Internet browser http www 3Com com This service features the latest information about 3Com solutions and technologies customer service and support n...

Page 76: ...a day 7 days a week Call 3ComFacts using your Touch Tone telephone using one of these international access numbers Country Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 Brazil up to 14400 bps 55 11 547 9666 France up to 14400 bps 33 1 6986 6954 Germany up to 28800 bps 4989 62732 188 Hong Kong up to 14400 bps 852 2537 5608 Italy fee required up to 14400 bps 39 2 27300680 Japan...

Page 77: ...ices including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready Diagnostic error messages A list of system hardware and software including revision levels Details about recent configuration changes if applicable If you are unable to contact your network supplier se...

Page 78: ... Netherlands 32 2 725 0202 31 30 6029700 3Com Canada Calgary Montreal Ottawa Toronto Vancouver 403 265 3266 514 683 3266 613 566 7055 416 498 3266 604 434 3266 3Com European HQ 49 89 627320 3Com France 33 1 69 86 68 00 3Com GmbH Austria Czech Republic Slovak Republic Germany Central European HQ Hungary Poland Switzerland 43 1 513 4323 420 2 21845 800 49 30 34 98790 Berlin 49 89 627320 Munich 36 1 ...

Page 79: ...12 F fax service See 3ComFacts feature summary A 1 filler panel 3 10 removing 3 14 flash memory drive option 4 Slot chassis 1 2 8 Slot chassis 2 2 Extended chassis 3 11 floppy disk drive 4 Slot chassis 1 7 1 8 8 Slot chassis 2 8 2 9 Extended chassis 3 11 maximum current consumption 4 Slot chassis A 2 8 Slot chassis A 3 Extended chassis A 4 replacing 4 Slot chassis 1 13 8 Slot chassis 2 12 Extended...

Page 80: ...sis 2 14 Extended chassis 3 17 display board 4 Slot chassis 1 17 8 Slot chassis 2 16 Extended chassis 3 18 replacing continued floppy disk drive 4 Slot chassis 1 13 8 Slot chassis 2 12 Extended chassis 3 16 fuse 4 Slot chassis 1 12 8 Slot chassis 2 12 8 slot Extended chassis 1 12 2 12 power supply 4 Slot chassis 1 10 8 Slot chassis 2 11 Extended chassis 3 13 returning products for repair C 4 S shi...

Page 81: ...riod Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Return Material Authorization RMA number marked on the outside of the package and sent prepaid insured and packaged appropriately for safe shipment The repaired or replaced item will be shipped to Customer at 3Com s expense not later than thirty 30 days after receipt of the defective product by 3Com WAR...

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