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EK-DEBAM-RU-001

June 1992

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Document:	LAN Bridge 200 ROM Upgrade
Order Number:	EK-DEBAM-RU
Revision:	001
Pages:	31
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LAN Bridge 200

ROM Upgrade

Order Number: EK-DEBAM-RU-001

NOTICE – Class A Laser Device:
The lasers in this equipment are Class 1 devices, compliant with CDRH Rules 21, CFR
Subchapter J, Part 1040.10, at date of manufacture. Class 1 laser devices are not
considered to be hazardous.

NOTICE – Class A Computing Device:
This equipment generates, uses, and may emit radio frequency energy. The equipment has
been type tested and found to comply with the limits for a Class A computing device
pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable
protection against such radio frequency interference when operated in a commercial
environment. Operation of this equipment in a residential area may cause interference; in
which case, measures taken to correct the interference are at the user’s expense.

CAUTION
This equipment is in the 1st Class category (information equipment to be used in
commercial and/or industrial areas) and conforms to the standards set by the Voluntary
Control Council for Interference by Data Processing Equipment and Electronic Office
Machines aimed at preventing radio interference in commercial and/or industrial areas.
Consequently, when used in a residential area or in an adjacent area thereto, radio
interference may be caused in radios and TV receivers etc. Read the instructions for
correct handling.

LAN Bridge 200

ROM Upgrade

June 1992
This manual describes how to upgrade the LAN Bridge 200
ROMs. The information includes how to remove and install two
ROM chips and verify the upgrade.
Supersession/Update Information:

Order Number: EK-DEBAM-RU-001

This is a new manual.

EK-DEBAM-RU-001
June 1992

The information in this document is subject to change without notice and should not be construed as a
commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document.
Copyright  1992 by Digital Equipment Corporation
All Rights Reserved.
Printed in U.S.A.

The following are trademarks of Digital Equipment Corporation:
DEBET
DEC
DEC FDDIcontroller
DECbridge
DECconcentrator
DECconnect
DECelms

DECmcc
DECnet
DECstation
DECsystem
DECUS
DECwindows
LAN Traffic Monitor

PDP
ThinWire
TURBOchannel
ULTRIX
UNIBUS
VAX
VAXcluster
VAXstation
VMS

This manual was produced by Telecommunications and Networks Publications.

Contents
Safety
Preface
1

Preparing to Upgrade
1.1
1.2
1.3
1.3.1
1.3.2
1.3.3

Installing ROMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Updating Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1
2–4

Completing the Upgrade
3.1
3.2
3.3

1–1
1–2
1–3
1–3
1–4
1–6

Performing the Upgrade
2.1
2.2

Unpacking and Inspecting the Upgrade Kit . . . . . . . . . . . . . . . .
Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparing the Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Bridge from a Rack or Wallmount Installation
Removing the Plastic Enclosure . . . . . . . . . . . . . . . . . . . . . . .
Opening the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Closing the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Verifying Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reinstalling the Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1
3–2
3–3

Related Documents

iii

Figures
1–1
1–2
1–3
1–4
2–1
2–2
2–3
3–1
3–2

LAN Bridge 200 ROM Upgrade Package Contents . . . . . . . . . .
Removing the Rubber Feet and Plastic Enclosure (Bottom) . . .
Removing Chassis Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Opening the Chassis Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Attaching the ESD Grounding Wrist Strap . . . . . . . . . . . . . . . . .
ROM Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locations for Applying Labels . . . . . . . . . . . . . . . . . . . . . . . . . .
Local LAN Bridge 200 LEDs After Power Up . . . . . . . . . . . . .
Remote LAN Bridge 200 LEDs After Power Up . . . . . . . . . . . .

1–2
1–5
1–6
1–7
2–2
2–3
2–4
3–2
3–3

Safety

Any warning or caution that appears in this manual is defined as follows:

Warning

Contains information to prevent personal injury.

Caution

Contains information to prevent damage to equipment.

Vorsicht

Enthält Informationen, die beachtet werden müssen, um
den Benutzer vor Schaden zu bewahren.

Achtung

Enthält Informationen, die beachtet werden müssen, um
die Geräte vor Schaden zu bewahren.

Danger

Signale les informations destinées à prévenir les accidents
corporels.

Attention

Signale les informations destinées à prévenir la détérioration
du matériel.

Aviso

Contiene información para evitar daños personales.

Precaucion

Contiene información para evitar daños al equipo.

The warnings and cautions that must be observed for the hardware described in this manual are listed below in English, German, French, and Spanish. The pages on which these
safety messages appear are also listed.

WARNING

The LAN Bridge 200 upgrade procedure should only be performed by qualified personnel familiar with safety procedures
for electrical equipment and the LAN Bridge 200 unit.
[Page ix, 2–1]

VORSICHT

Die Erweiterung der LAN Bridge 200 darf nur von Fachleuten durchgeführt werden, die mit den Sicherheitsvorkehrungen im Umgang mit elektrischen Geräten und mit der
LAN Bridge 200 vertraut sind.

DANGER

La mise à jour du LAN Bridge 200 doit être effectuée par du
personnel qualifié connaissant les normes de sécurité sur
l’équipement électrique et les unités LAN Bridge 200.

AVISO

El procedimiento de actualización del LAN Bridge 200 debe
efectuarlo únicamente personal especializado que conozca
los procedimientos de seguridad de equipos eléctricos y de
la unidad del LAN Bridge 200.

CAUTION

Make sure the bridge ports are properly disabled before beginning the upgrade. [Page 1–1]

ACHTUNG

Vergewissern Sie sich, daß die Bridge–Anschlüsse ordnungsgemäß ausgeschaltet sind, bevor Sie mit der Erweiterung beginnen.

ATTENTION

Assurez–vous que les ports de passerelles sont désactivés
avant de commencer la mise à jour.

PRECAUCION

Asegúrese de que las puertas del puente están debidamente
desactivadas antes de comenzar con la
actualización.

WARNING

When performing any removal or replacement procedures, always remove the ac power cord from the ac power source.
[Page 1–3]

VORSICHT

Ziehen Sie immer zuerst das Netzkabel aus der Steckdose,
wenn Sie Teile austauschen oder entfernen müssen.

DANGER

Au moment de retirer ou de remplacer des composants internes, débranchez toujours le cordon d’alimentation de la
prise.

AVISO

Al realizar operaciones de retirada o sustitución, quite
siempre el cable de alimentación de corriente alterna de su
toma correspondiente.

CAUTION

Components in the bridge can be damaged by electrostatic
discharges (ESD). When replacing components in the unit,
always use a grounded wrist strap (ESD strap) and a
grounded work surface. [Page 2–1]

ACHTUNG

Durch elektrostatische Aufladung können Bestandteile der
Bridge beschädigt werden. Benutzen Sie deshalb beim
Auswechseln von Teilen immer eine geerdete Gelenkmanschette und eine geerdete Arbeitsfläche.

ATTENTION

Les composants de la passerelle peuvent être endommagés
par contact électrostatique. Utilisez toujours un bracelet
antistatique et travaillez sur une surface mise à la terre
lorsque vous remplacez un composant.

PRECAUCION

Los componentes del puente pueden quedar dañados por
descargas electroestáticas (ESD). Al sustituir componentes
de la unidad, use siempre una muñequera antiestáticay una
superficie de trabajo conectada a tierra.

vii

Preface

This manual explains how to upgrade LAN Bridge 200 unit ROMs and how to verify
the bridge’s operation once you have installed the new ROMs.
WARNING !
The LAN Bridge 200 upgrade procedure should only be
performed by qualified personnel familiar with safety
procedures for electrical equipment and the LAN
Bridge 200 unit.

Intended Audience
This manual is for the hardware installer or system/network manager who is familiar
with the LAN Bridge 200 unit.

1
Preparing to Upgrade

Preparing the LAN Bridge 200 unit for upgrade includes the following tasks:

• Unpacking and inspecting the upgrade kit
• Preparing the bridge by removing it from either a wall or a rackmount installation or removing the plastic enclosure from a tabletop installation

• Opening the unit

CAUTION !
Make sure the bridge ports are properly disabled before
beginning the upgrade.
NOTE
Consider performing bridge upgrades during a planned
system shutdown.

1.1 Unpacking and Inspecting the Upgrade Kit
Figure 1–1 illustrates the contents of the upgrade kit. Check the shipment for damaged or missing parts. In particular, check the ROM pins to ensure they are not bent.
If parts are damaged, contact your delivery agent and your Digital sales representative. If parts are missing, contact your Digital sales representative.

1–1

Figure 1–1:

LAN Bridge 200 ROM Upgrade Package Contents

128Kx8 ROM for
socket E236
P/N 23-209E8-00

128Kx8 ROM for
socket E237
P/N 23-208E8-00
LAN Bridge 200 ROM Upgrade manual (this manual)
P/N EK-DEBAM-RU

Configuring the SNMP Agent document
P/N AA-PR84A-TE

ESD grounding wrist
strap and tether
P/N 29-11762-00

LKG–6629-92I

1.2 Tools Required
You need a #2 Phillips-head screwdriver, a small flatblade screwdriver (approximately 3mm [1/8 inch]) for removing ROMs, and the ESD grounding wrist strap.

1–2

LAN Bridge 200 ROM Upgrade

1.3 Preparing the Bridge
The LAN Bridge 200 unit may be installed in a rack, a wallmount installation, or
reside on a desktop. If the unit is in a rack or wallmount, remove it before servicing.
If the unit resides on a desktop, remove the plastic enclosure before servicing.
The following two sections explain removing the unit from a rack or wallmount and
removing the plastic enclosure.
WARNING !
When performing any removal or replacement procedures, always remove the ac power cord from the ac
power source.
1.3.1 Removing the Bridge from a Rack or Wallmount Installation

To remove a LAN Bridge 200 unit from a rack or wallmount, follow these steps:
1. Unplug the bridge power cord from the ac power source and then remove the
cord from the LAN Bridge 200 unit.
2. Ensure that all cable connectors are removed from the unit.
3. Support the bridge and remove the screws holding the mounting brackets to
the rack (no screws for the wallmount).
NOTE
Two people may be needed to remove the bridge.

4. Remove the bridge.
5. Remove the rack or wallmount brackets from the bridge and place it on a flat
surface.
6. Place all removed parts nearby for replacement later.
7. Proceed to Section 1.3.3.

Preparing To Upgrade

1–3

1.3.2 Removing the Plastic Enclosure

To remove the plastic enclosure from the bridge, follow these steps:
1. Unplug the bridge power cord from the ac power source and then remove the
cord from the LAN Bridge 200 unit.
2. Carefully turn the unit upside down and remove the four screws that secure
the rubber feet to the bottom of the unit (see the following figure). These
screws also hold the top plastic cover and the two side spacers in place.
3. Remove the four other screws (see Figure 1–2) that hold the bottom cover to
the metal chassis.
NOTE
The top and bottom of the enclosure have arrows imprinted on the inside to help with reassembly. The arrows indicate the front of the unit.

4. Remove the plastic enclosure and place all removed parts nearby for replacement later.
5. Place the unit rightside up.

1–4

LAN Bridge 200 ROM Upgrade

Figure 1–2:

Removing the Rubber Feet and Plastic Enclosure (Bottom)
Phillips-Head
Screws (4)

Partition Mounting
Screws (4)

Rubber Feet (4)

LKG-2727-92I

Preparing To Upgrade

1–5

1.3.3 Opening the Unit

To open the unit, follow steps 1 and 2:
1. Remove the 12 chassis cover screws (see Figure 1–3) as follows:
a. Remove two flathead screws from the top of the chassis.
b. Remove eight screws from the ends of the chassis (five on one end, three
on the other). Do not remove the four screws located in the grill area
that hold the fan assembly (see Figure 1–4).
c. Remove two screws from the ac power connector area.
Place all screws nearby for replacement later.
Figure 1–3:

Removing Chassis Screws
Phillips-flathead
screws (2)

ac power
connector
Phillips-panhead
screws (10)
LKG-2761-92I

1–6

LAN Bridge 200 ROM Upgrade

2. With the I/O panel facing you, lift the top of the chassis upward and turn it
upside down (see Figure 1–4).
NOTE
Be careful not to damage the ribbon cable.
Figure 1–4:

Opening the Chassis Cover

Metal chassis
top
Fan assembly

Ribbon
cable

Metal chassis
bottom
LKG-2765-92I

Preparing To Upgrade

1–7

2
Performing the Upgrade

Installing LAN Bridge 200 ROMs includes the following tasks:

•

Removing the ROMs from sockets E236 and E237

•

Installing new ROMs into sockets E236 and E237

•

Updating labels

2.1 Installing ROMs
To install the new LAN Bridge 200 ROMs, follow steps 1 through 4.
WARNING !
The LAN Bridge 200 upgrade procedure should only be
performed by qualified personnel familiar with safety
procedures for electrical equipment and the LAN
Bridge 200 unit.
CAUTION !
Components in the bridge can be damaged by electrostatic discharges (ESD). When replacing components in
the unit, always use a grounded wrist strap (ESD strap)
and a grounded work surface.

2–1

1. Attach the ESD grounding wrist strap to your wrist and connect the alligator
clip to the LAN Bridge 200 metal chassis to act as a ground (see Figure 2–1).
Figure 2–1:

Attaching the ESD Grounding Wrist Strap

LKG-2765-92I

2. Use the small flatblade screwdriver to remove ROMs from socket locations
E236 and E237 (see Figure 2–2). Carefully slide the screwdriver blade under
one end of the ROM and slightly pry it upwards. Repeat this on each end of
the ROM until it is removed.
NOTE
Ensure that you do not damage nearby components with
the screwdriver.

2–2

LAN Bridge 200 ROM Upgrade

Figure 2–2:

ROM Locations

Notch
E237
E236

I/O Panel
LKG-6644-92I

3. Install a new ROM, labeled E236, into socket E236. Lightly set the ROM
onto socket E236, making sure the notch is nearest the edge of the board and
pins are aligned. Then, press down slowly until the ROM is seated in the
socket.
4. Install a new ROM, labeled E237, into socket E237. Lightly set the ROM
onto socket E237, making sure the notch is nearest the edge of the board and
pins are aligned. Then, press down slowly until the ROM is seated in the
socket.
NOTE
Once you have installed the new ROMs, store the used
ROMs in the cases the new ROMs were shipped in.

Installing ROMs

2–3

2.2 Updating Labels
Update the identification labels that appear on the bridge once you have completed
the ROM installation. Peel-and-stick labels are provided in the shipping package.
Apply one label on the module inside the bridge and the other on the outside of the
unit on the I/O panel. Replace two labels:
1. Peel the backing from the label with the 54-class number and place it directly
over (covering) the number located on the left side of the module as you face
the I/O panel (see Figure 2–3). Do not cover up the serial number. Press
firmly so that the label stays in place.
2. Peel the backing from the label containing the revision number and place it
directly over (covering) the revision number and barcode located on the I/O
panel label (see Figure 2–3). Do not cover the part number or serial number
on the label. Press firmly so that the label stays in place.
Figure 2–3:

Locations for Applying Labels

J01
54-18357–02

J02
LKG-6659-92I

Proceed to Chapter 3 and follow the instructions for completing the upgrade.

2–4

LAN Bridge 200 ROM Upgrade

3
Completing the Upgrade

Completing the LAN Bridge 200 ROM upgrade involves the following tasks:

•

Closing the unit

•

Verifying operation

•

Reinstalling the unit

3.1 Closing the Unit
To close the unit and verify that the bridge is working properly, remove the wrist
strap and perform the following steps:
1. Lift the top of the chassis (with power supply and fan) and turn it over, carefully replacing it onto the bottom of the chassis.
2. Reinstall the 12 screws on the sides and top of the unit. Note that the two
flathead screws go on the top of the chassis and should be reinstalled first to
help with cover alignment (see Figure 1–2 for screw locations).

3–1

3.2 Verifying Operation
To verify that the bridge is working properly, perform the following steps:
1. Reconnect the ac power cord.
2. Verify that the LEDs are working and the bridge is operating properly (see
Figure 3–1 and Figure 3–2). Refer to Chapter 4 in the LAN Bridge 200 Installation manual for more information on verifying unit operation.
Figure 3–1:

Local LAN Bridge 200 LEDs After Power Up

LB SW

Logic Module

AUI

Port A

Port B

= On

= On or off
(but not blinking)

= Off

= On or off or blinking
(indicating network traffic)

Local
PCI device

LKG–2419-92I

3–2

LAN Bridge 200 ROM Upgrade

Figure 3–2:

Remote LAN Bridge 200 LEDs After Power Up

LB SW

AUI

Logic Module

Port A

Port B

= On

= On or off
(but not blinking)

= Off

= On or off or blinking
(indicating network traffic)

Remote
PCI device

LKG–2420-92I

3.3 Reinstalling the Bridge
To reinstall the bridge, unplug the ac power cord after verifying that it is working
properly and perform one of the following procedures:

•

If the unit is used on a desktop, reinstall the plastic enclosure by referring to
Figure 1–2. Note that the unit is upside down so that you can reinstall the
rubber feet and screws. Connect all cables and reinstall the unit by referring
to Chapter 4 in the LAN Bridge 200 Installation manual.

Completing the Upgrade

3–3

NOTE
The arrows imprinted on the inside of the top and bottom
of the enclosure indicate the front of the unit.

•

3–4

If the unit is used in a wall or rackmount, reinstall the unit by referring to
Chapter 4 inside the LAN Bridge 200 Installation manual.

LAN Bridge 200 ROM Upgrade

A
Related Documents

The following documents contain additional information about the LAN Bridge 200
product:

•

LAN Bridge 200 Installation (Order No. EK-DEBAM-IN)
Explains how to install the LAN Bridge 200 bridge and verify its operation.
It also describes the bridge’s controls and indicators.

•

LAN Bridge 200 Problem Solving (Order No. EK-DEBAM-PS)
Explains how to troubleshoot and service LAN Bridge 200 units. Information includes a product overview, problem-solving methods, and removal and
replacement procedures for field-replaceable units (FRUs).

A–1

HOW TO ORDER ADDITIONAL DOCUMENTATION
DIRECT TELEPHONE ORDERS
In Continental USA
and Puerto Rico
call 800–258–1710

In Canada
call 800–267–6146

In New Hampshire
Alaska or Hawaii
call 603–884–6660

DIRECT MAIL ORDERS (U.S. and Puerto Rico*)
DIGITAL EQUIPMENT CORPORATION
P.O. Box CS2008
Nashua, New Hampshire 03061

DIRECT MAIL ORDERS (Canada)
DIGITAL EQUIPMENT OF CANADA LTD.
940 Belfast Road
Ottawa, Ontario, Canada K1G 4C2
Attn: A&SG Business Manager

INTERNATIONAL
DIGITAL
EQUIPMENT CORPORATION
A&SG Business Manager
c/o Digital’s local subsidiary
or approved distributor

Internal orders should be placed through Publishing and Circulation Services (P&CS),
Digital Equipment Corporation, 10 Forbes Road, Northboro, Massachusetts 01532–2597
*Any prepaid order from Puerto Rico must be placed
with the Local Digital Subsidiary:
809–754–7575

LAN Bridge 200
ROM Upgrade
EK-DEBAM-RU-001
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