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Document:	DECserver 700 Site Preparation and Maintenance
Order Number:	EK-DSRVW-MG
Revision:	B01
Pages:	69
Original Filename:

OCR Text

DECserver 700

Site Preparation and Maintenance
(Hardware Owner’s Manual)

February 1993

This manual, in conjunction with the DECserver 700 Hardware

Installation Card, describes how to install the DECserver 700
network access server and how to verify its operation. This
manual also describes the controls and indicators. This manual
is intended for the hardware installer and the network manager.

SupersessiorvUpdate Information:

This is a revised manual.

Software Version: DECserver Network Access Software V1.0
This manual applies to Version 1.0 of the DECserver Network

Access Software and all subsequent maintenance releases up

to the next major product release.

clilgitlal

Part Number: EK-DSRVW-MG. B01

EK-DSRVW-MG. 801

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.,

The following are trademarks of Digita' Equipment Corporation: DEC, DECconnect, DECnet,
DECserver, DELNI, DEMPR, DESTA, ThinWire, UNIBUS, VAX, and the Digital logo.

This manual was produced by Telecommunications and Networks Publications.

Contents
Preface

Hardware Overview
1.1

1.2

Models . ... ...
e
Controls, Indicators, and Connectors . ....................

1-1
1-3

1.3

Understand the Software Loading ... ....................

1-6

Loading from FlashRAM ... ... ... ... .........
...
... ..
....
. ...
...
Loading from the Network .......

1-6
1-6

1.3.1

1.3.2

Checking the Site
2.1

Physical Requirements . ................
.. ... ... .. ...

2-1

2.2

Environmental Requirements . ..........................
... ..
....
... .. ...
Electrical Requirements .. ......

2-2
2-3

2.3

Cabling the Site
3.1

.
it
....
... .. ..
Preinstallation Checks ....

3-1

3.2

Installing the Ethernet Cables and Devices ................

3-2

3.2.1

Installing the Standard Ethernet Cables and Devices ... ...

3-2

322

Installing the 10Base
T Ethemet Cables and Devices ......

3-4

323

Installing the ThinWire Ethernet Cables and Devices ... ...

3-5
3-9

Installing Serial Cables and Devices on the D=Cserver 700-16
Installing Serial Cables and Devices on the DECserver 700-08

3-11

3.5

... coiinoe...
Cabling Requirements ..................

3-12

35.1

Standard Ethemet Connection ........................

35.2

10BaseT Ethemet Connection ........................

353

ThinWire Ethernet Connection .......................

3.6

Installing the DECserver 700inaRack ...................

Connector and Cable Pin Descriptions
4.1

4-1

Connector Pin Descriptions

4.1.1

i
... .......
Standard Ethernet . . .....

4-2

412

10BaseT Ethernet .. ....... O PP

4-3

413

DECserver 700-08 Serial Line Ports

414

DECserver 700-16 Serial Line Ports . ..................

4.2

...................

Cable Connections . .. ... .ottt

4-5

Replacing and Adding Memory
5.1

Replacing a Faulty Single-In-Line Memory Module . ....
.. .

5~1

5.2

Additional Miemory Supported

.........
... ...
L

5-2

Installing ExraMemory

...........
.. ... .. .. .ol

5-4

Replacing and Adding Flash RAM
6.1

Replacing or Adding FlashRAM

.......................

6-1

What to Do if You Have Problems
7.1

Diagnosing DECserver 700 Problems ....................

7-1

1.2

Seven-Segment Display Off and System OKLED Off .. . ....

7-2

7.3

System OK LED Off/Seven-Segment Display Flashing “C”, “d”,
0 e
PP

7-3

7.4

System OK LED Off/Seven-S=gment Display Flashing ... ...

7.5

System OK LEDFlashing ..................
... .......

ErmorMessage 952 ... .. ... e

7-5

1-1

DECserver 700-08 Rear View .........
... ... .. ... .....

1-2

DECserver 700-16 Rear View ..........................

1-3

DECserver 700 FrontEnd ..................
... ... .. ...

1-3

3-1

Standard Ethemet Coaxial Cable Connection ..............

10BaseT Ethemet Connection . . ........................

3-3

Connecting the DECserver 700 to ThinWire Ethemnet Cable

3-5

ThinWire Ethernet Standalone Segment ..................

3-5

DEMPR ThinWire Connection

.........................

3-8

DEMPR Connections .............cocuviniinninan
s,

3-9

3-7

How to Fit the Brackets to Recess the DECserver 700 .......

3-16

3-8

Removing the Brackets .................
... ... ... .....

3-17

4-1

Pin Numbers and Signals for Standard Ethemet Connector ...

4-2

Pin Numbers and Signals for 10BaseT Ethemet Connector ...

4-3

Pin Numbers and Signals for 25-Pin D-sub Connector . ... ...

4-4

Pin Numbers and Signals for the MJ8 Connector ...........

4-5

Adapters and Connectors Used with the DECserver 700

.. ...

4-8

Removing the Brackets ............
... .. ... ... ...
..

5~5

RemovingtheCovers . ...........
... ... . . oiiiiinn.

5-6

Fitting the Anti-StaticKit. . . .........
... . ... ... ...,

5-7

Locating the SIMs Connectors .. ........................

5-8

RemovingaSim ................. e

5-9

Inserting the Replacement SIM .. .......................

5-10

Adding an Additional SIM . . . ........
... .. .o

5-1i

7.5.1

Figures

Replacing the Covers ..............
... ...,

5-12

Locating the Flash RAM Card Connector . ................

6-3

Inserting the FlashRAM Card

.........................

6-4

........ ... ... .. .viiv....

1-4

DECserver 700 Indicators .............................

1-4

Network Activity LED .. .............
... ... ... ...

1-5

DECserver 700 Connectors . ............cvvienenunenn..

1-5

Physical Specifications of the DECserver 700 . .. ...........

2-1

ACOUSHCS ...t
i e et e
e

2-2

Environmental Specifications of the DECserver 700 ..... ...

2-2

Electrical Requirements . ..........
... ... .. ..o ...

2-3

Standard EthemmetIEEE 802.3 Connector Qutput ...........

2-3

Cables and Adapters for the DECserver 700-16 .. ....... ...

3-10

Cables and Adapters for the DECserver 700-08

. ...........

3-11

Maximum Communications Distances — Ethernet . .. ...
. ...

3-12

Maximum Cable Lengths1 — DECserver 700 to Devices

....

3-13

Installing the DECserver 700 Brackets ...................

3~15

Cable Connections .............ccitiiineeninnnenn..

4-6

Display/Indications

7-2

DECserver 700 Controls

. .............
... ... ... ... ...,

Network Activity LED . . ... ... ... ..

... ... ...

...

7-10

Preface

intended Audience
This manual, in conjunction with the DECserver 700 Hardware Installation Card, is
intended for the hardware installer. The installer is responsible for ensuring that the

hardware is installed and tested. The DECserver 700 Hardware Installation Card
shows how to install the DECserverTM 700 when the site is verified and the cables
and devices are in place. This manual shows how to verify the site, install cables and
devices, and troubleshoot the DECserver 700. The person installing the DECserver

700 software can then verify the system installation.

Structure of This Manual
This manual contains the following chapters:

Chapter 1 — Provides an overview of the DECserver 700 features.
Chapter 2 — Describes how to verify the site before installing the DECserver
700.

Chapter 3 — Describes how to cable the site.
Chapter 4 — Describes connector pins for the various server connectors and

also describes various cables, adapters, and accessories used with the DECserver 700.

Chapier 5 — Shows how to install extra memory and replace {aulty memory .
Chapter 6 — Shows how to update a DS700 with Flash RAM.
Chapter 7 — Shows how to troubleshoot the DECserver 700.
vii

Associated Documents
DECserver 700 Hardware Installation Card

Shows how 10 install the DECserver 700 when the site is verified and the
cables and devices are in place.

DECserver Network Access Sofiware Instaliation (op-sys)
Explains how to install the DECserver 700 distribution software, how to es-

tablish downline load hosts, and how to verify the DECserver 700 system
installation. In the title, (op-sys) is the name of the load host operating system.

Nerwork Access Server Problem Solving

Describes the software tools and techniques available to troubleshoot the
server and also describes all error messages.
Network Access Server Management

Provides the procedures to perform various DECserver 700
management tasks.
Network Access Server Commands

Lists and describes all the DECserver 700 software commands.
DECconnect System Planning and Configuration Guide

Information on cabling and configuring of local area networks and using
DECconnect system products.

The Ethernet: A Local Area Network: Data Link Layer and Physical Layer
Specification
Lists standard Ethernet connectors and their signal specifications.

viii

1
Hardware Overview

The DECserver 700 connects devices (such as printers. terminals, PCs, and modems) to local area networks (LANs). The DECserver 700 is EthermneVIEEE
802.3-based and supports standard Ethernet/1EEE 802.3 and 10BaseT Ethernet/

IEEE 802.3 directly. and ThinWireTM Etherret/IEEE 802.3 through an adapter. The
DECserver 700 can be installed on a desktop or in a 19-inch rack. The DECserver
700 supports Flash RAM capability and other nonvolatile forms of memory. This

capability can be ordered separately and installed on the DECserver 700 in the field.

The DECserver 700 can download the software image from the network or from the
Flash RAM option if installed. The Flash RAM option allows for a boot/power up
without having to download the image through the network. The DECserver 700 will
support up to & Mbytes of memory with the use of two single-in-line modules
(SIMs). These SIMs can be installed as memory updates by the customer.

There are two DECserver 700 models:

1.1

DECserver 700-08

DECserver 700-16

Models
The DECserver 700-08 supports EIA-232-D/V.24/V.28 full modem control on eight

25-pin male D-connectors. Use this model to connect devices that require full duplex, asynchronous control (for example: modems).

1-1

Figure 1-1 shows arear view of the DECscrver 700-08. The DECserver 700-16 supports EIA-423-A and DEC 423 data-leads on 16 MJ8 connectors. Use this model to
connect devices requiring data-leads for operation (for example: terminals, printers,
and personal computers in terminal emulation mode). You can connect the DECserver to modems that do not require the full complement of signals provided by the
DECserver 700-08, usir:2 special adapters (Section 3.3).
NOTE

Adapters H8585-AB and H8585-AC are not for connection to public networks in Sweden, Germany, or Japan.

Figure 1~1:

DECserver 700-08 Rear View

_:j';',f’ System reset
-

oswilch

Seven-segment

- display

‘

Ethamet"
select

Serial ports

LKG-5569-911

1-2

Site Preparativ;' and Maintenance

Figure 1-2 shows a rear view of the DECserver 700-16.
Figure 1-2:

DECserver 700-16 Rear View

Serial ports

""""

Netwok—

conmector
LKG-5568-911

1.2 Controls, Indicators, and Connectors
All of the DECserver 700 controls, indicators, and connectors are located on the rear
of the DECserver 700 as shown in Figure 1-1 and Figure 1-2, with the exception of
the System OK LED, which is duplicated on the front of the DECserver 700
(Figure 1-3).

Figure 1-3:

DECserver 700 Front End

LKG-6008-91!

Hardware Overview

Table 1-1 describes the DECserver 700 controls. Table 1-2 and Table 1-3 describe
the indicators, and Table !4 describes the connectors. For more information on the
connectors, refer to Chapter 4.
Table 1-1:

DECserver 700 Controls

Control

Description

System reset switch

On power up, press this switch until E appears on the

seven-segment display. This reloads the factory set parameters. During Flash load, pressing and holding the
system reset switch will abort the Flash RAM load and

force a network boot. Refer to Chapter 7 for more information.

Ethernet select switch

This switch selects either standard or 10BaseT Ethernet.

Table 1-2:

DECserver 700 indicators

indicator

Dispiay

System OK LED

Lights (green) when the DECserver 700 has passed selftest. Blinks when a nonfatal error occurs on self-test.

When off. indicates that the DECserver 700 has failed
selt-test.

Network activity LED

Refer to Table 1-3.

Seven-segment display

Provides error and status information.

Site Preparation and Maintenance

Table 1~3:

Network Activity LED

Ethemet

Selected

Connection Status

LED Display

10BaseT

Open/incorrectly terminated

OFF

Correctly terminated / no network activity

Correctly terminated / network activity

Flashing {rate independent of
network activity)

Standard Ethernet

Open

OFF

Correctly connected / no network activity

OFF

Correctly connected / network activity

Flashing or ON, depending
on network activity

Table 1-4:

DECserver 700 Connectors

Connector

Description

Senal port connectors

These eight 25-pin male D-connectors connect EIA-232-D

(DECserver 700-08)

devices to the DECserver 700.

Senal port connectors

These 16 female MJ8 connectors connect data-lead de-

{DECserver 700-16)

vices to the DECserver 700.

Standard Ethernet connector

This single 15-pin female D-connector connects to a standard Ethernet/IEEE 802.3 loca! area network using a
transcaver cable.

10BaseT Fthernet connector

This single female MJ8 connector connects to a 10BaseT
EtherneVIEEE 802.3 local area network.

Power cord receptacle

Hardware Overview

The DECserver 700 power cord plugs into this receptacle.

1.3

Understand the Software Loading
This section describes the two methods that the DECserver 700 access to load the
software.

1.3.1

Loading from Flash RAM

Once the DECserver 700 completes self-tests, the DECserver 700 checks for Flash
RAM. If there is a valid Flash RAM, the DECserver 700 begins the boot sequence to
load the software from Flash RAM. The seven-segment display will display three
horizontal segments during this loading process.

If the DECserver 700 does not have Flash RAM. the DECserver 700 proceeds to a
network load.

If a device is connectad to the console port, the DECserver 700 can display status
messages while the boot sequence is running. Status messages indicate the Ethernet
address of the DECserver 700, the name of the load image it is fooking for, and the
stage of the bcot process it is in.
1.3.2

Loading from the Network

If you do not want to load the software from Flash RAM. you can press the system
reset switch during load from Flash RAM. When the system reset switch is pressed,

the Flash RAM load will be aborted and the software is downline loaded from aload
host.

When the DECserver 700 notices the system reset switch depressed during load

from Flash RAM. it will rapidly blink the LED to acknowledge the pressed system
resct switch (this may take several seconds). Once the LED begins rapidly blinking,
you may release the system reset switch and the firmware will go on to a network
boot sequence. For more information on display codes for Flash RAM, refer to section 7.7.

1-6

Site Preparation and Maintenance

2
Checking the Site

The DECserver 700 can operate in an office environment and in a standard equipment rack located in a computer room or satellite equipment room. Regardless of

where you install the DECserver 700, verify that all of the requirements in this sec-

tion are met before beginning the installation.

2.1

Physicail Requirements
Allow for 15 cm (6 in) of airspace around the DECserver 700 air vents. Table 2-1
shows the size and weight of the DECserver 700. Table 2-2 shows the acoustic parameters.

Table 2-1:

Physical Specifications of the DECserver 700

Dimension

Measurement

Height

44 mm (1.73in)

Width

442 mm (17.4 in)

Depth

282 mm (11.1in)

Weight

2.5kg (5.51 ibs)

Table 2-2:

Acoustics

Parameter

Measurement

Lwad’

4.1 bels (Lya = 3.8 bels)

Lpam (bystander)’

27 dBA

'Preliminary declared values per 1ISO 9296 and 1SO 7779. Current values are available from
Digital representatives.

2.2

Environmental Requirements
Znvironmental requirements for temperature and humidity must be within the
ranges shown in Table 2-3.

Table 2-3:

Environmental Specifications of the DECserver 700

Parameter

Minimum

Maximum

Operating

5°C {41°F)

50°C (122°F)

Nonoperating

- 40°C (- 40°F)

66°C (151°F)

Temperature!

Maximum rate of

20°C (36°F)

temperature change per hour

Altitude

Operating

2438 m (8000 ft)

Nonoperating

4876 m (16000 ft)

Relative humidity

Operating (noncondensing)

10%

95%

Nonoperating (noncondensing)

10%

95%

'For high altitude sites, decrease the operating temperature specification by 1.8°C for each
1000 m (1°F for each 1000 ft) above sea level.

2-2

Site Preparation and Maintenance

2.3

Electrical Requirements
The power at the electrical outlet must match the requirements shown in Table 2-4.
The instructions assume that an appropriate AC power source is within 1.8 m (6.0 1)
of the DECserver 700.

Table 2-4:

Electrical Requirements

Parameter

DECserver 700

Line voitage'

100 -~ 120 V rms/220 - 240 V rms

Frequency

50/60 Hz

Line current

1.4

Power

92w

Ams/.75 A rms

'The DECserver 700 automatically selects the voltage range.

Table 2-5 shows the electrical output from the standard EtherneVIEEE 802.3
connector.

Table 2-5:

Standard EthernetiEEE 802.3 Connector Output

Parameter

DECserver 700

Voitage

+12VDC

Current

.5 A Max

Checking the Site

2-3

3
Cabling the Site

This chapter shows you how to install the cables and associated devices used by the
DECserver 700.

3.1

Preinstalliation Checks
Before beginning the DECserver 700 installation, use the following checklist to
make sure that the site preparation is complete:

Arrangements have been made to connect the DECserver 700 Ethernet port to
an Ethernet interface device (if required). For standard Ethernet, the device
can be a DELNITM network concentrator or an Ethernet transceiver. For ThinWire Ethernet, the device can be a DEMPRTM. DESPR, or ThinWire segment.
For 10BaseT Ethernet, the device can be a DETPR.
The Ethemei interface device is installed and the required cabling is in place,
tested, and tagged.

The rack-mount kit is installed (if required) as described in the DLCserver
700 Hardware Installation Card.

Cables of appropriate length are available for connecting the DECserver 700
to the Ethernet interface device.

The devices (terminals, modems, personal computers, hosts) are ready to be
connected.

Cables of appropriate length and type are available for connection of serial
devices.
31

One terminal (asynchronous, DEC423 or E1A-232-D compatible) is available
for hardware testing and system verification.

3.2 Installing the Ethernet Cables and Devices
You can connect the DECserver 700 to:
e

Standard EthermneIEEE 802.3 network

10BaseT EtherneVIEEE 802.3 network

ThinWire Ethernet/1EEE 802.3 network using an external media access unit
(MAU) such as a DESTATM

3.2.1

Installing the Standard Ethernet Cables and Devices
You can connect the DECserver 700 to the standard EtherneV1EEE 802.3 network
(Figure 3-1) by connecting to0:

Another transceiver cable section. (You connect to another section by using a
Etherjack Junction Box.)

A DELNI local area network.

A transceiver on a standard Ethernet coaxial cable for Digital Equipment
Corporation baseband networks.

3-2

Site Preparation and Maintenance

Figure 3-1:

Standard Ethernet Coaxial Cable Connection

“DECserver700

LKG-5570-91

Cabling the Site

3.2.2

Installing the 10BaseT Ethernet Cables and Devices

You can connect the DECserver 700 to a DETPR (Figure 3-2) by using:
e

BN24F cable for local wiring requiring crossover

1,N25G cable for pin-to-pin building wiring

Figure 3-2:

10BaseT Ethernet Connection

‘Transceiver

Standard Ethernet coaxial cable
/-—-—-I—,I

DETPR

i
i

Transceiver cable
BN25G cable
pin-to-pin)

Waliplate—,

DECserver 700-08 N
e

C TR
R Tk
WIS

\ BN24F cable

P \- BN24F cable

e
.Q

LKG 557191

Site Preparation and Maintenance

Installing the ThinWire Ethernet Cables and Devices

3.2.3

You can connect the DECserver 700 to a ThinWire Ethernet (Figure 3-3) as follows:
1.

Connecting the MAU to the standard Ethernet connector

Connecting the ThinWire cable to the MAU

Figure 3-3:

Connecting the DECserver 700 to ThinWire Ethernet Cable

G0,

i o

(|00, G

LKG-657281i

Use a ThinWire coaxial cable to connect the DECserver 700 to the system in either of
two ways:

As part of a standalone ThinWire Ethemnet coaxial cable segment

As part of a DEMPR or DESPR ThinWire Ethernet coaxial cable segment

Figure 3-4 shows the DECserver 700 connected as part of a ThinWire Ethernet
segment.

Cabling the Site

3-5

CAUTION
A ThinWire segment must begin and end in &
50-ohm terminator (H8225) as shown in Figure 3—4.

Figure 3-5 shows the DECserver 700 connected as part of a DEMPR ThinWire
Ethernet segment.

NOTE

The DEMPR and DES' R ierminate the line internally
in 50 ohms so that it 1s not necessary to use a 50-ohmer-

minator (H8225). However, all unused lines on the

DEMPR must have a 50-ohm terminator (H8225)
installed as shown in Figure 3-6.

For further information on ThinWire Ethernet installation, refer to the DECconnect
System Planning and Configuration Guide .

Site Preparation and Maintenance

Figure 3-4:

ThinWire Ethernet Standalone Segment

Connector

)

B :M'ThinWire Ethemet cable
DECserver700 |

\:- Connector
\—

T-connector

Connector

je——— ThinWire Ethermet cable

* DECrouter 250 |
€l

— Connector
T-connector

Connector

Connector
T-connector

Terminator

LKG-6573-g1!

Cabling the Site

3-7

Figure 3-5:

DEMPR ThinWire Connection

DEMPR

b TR

. VAXstation 2000
= "QECmuterzsow

Connector

\_
|

T-connector
Termunator

LKG-3153-911

3-8

Site Preparation and Maintenance

Figure 3-6:

DEMPR Connections

\— Terminators

\~ ThinWire cables

LKG-2586-91

3.3

Installing Serial Cables and Devices on the DECserver 700-16
The DECserver 700-16 can be configured by the software to support one of the two
sets of signals. One set consists of:

Clear to send (CTS) — This is the default setting.

Request to send (RTS) — This is the default setting.

Datasetready (DSR) — This is the default setting.

Data terminal ready (DTR) — This is the default setting.

The second set consists of:
e

Ring indicator (RI)

Data signal rate selector (DSRS)

Data carmrier detect (DCD)

Cabling the Site

3-9

Data terminal ready (DTR)

Before installing cables to the DECserver 700 ports, you must verify with the person

managing the DECserver 700 what modem signals are supported. This information
is necessary to determine what cables to use. For more information on the signals,
refer to the Network Access Server Management manual.

Use the following cables to connect to the 8-pin modular jacks on the serial communication lines of the DECserver 700-16:
Table 3-1:

Cables and Adapters for the DECserver 700-16

Cable and Adapters

Description

BN25G MP8 to MP8 Equipment Cable

Use this cable to connect to OPEN DECconnect.

BN24H MP8 to MMP6 (modified modular

Use this cable to connect to the 6-pin modified

plug) Ofifice Cable

modular jack (MMJ) of a terminal or printer.

H8575-A (E14-423-A to EIA-232-D) Adapter

Use this adapter and the BN24H cable to connect to 25-pin D-sub male connectors (for exampie: printers).

H8575-B Adapter

Use this adapter and the BN24H cable to connect to 9-pin D-sub male connectors.

H8571-D (ElA-423-A to EIA-232-D) Adapter

Use this adapter and the BN24H cable to connect to 25-pin D-sub female connectors.

H8584-AA MP8 to MMJ Adapter

Use this adapter to convert the DECserver
700 connector to DECserver 300 pin-out.

HB585-AA MJ8 to DB (female) Null-Modem

Use this adapter with the BN25G cabie to

Adapter

convert the DU Cseiver 700 connecior io DBY
(female) connector for cabling to PC asynchronous pors.

HB8585-AB" MJ8 1o DB25 (male) Modem

Can be used with the BN25G cable to con-

Adapter

nect low speed modems to the DECserver
700. Refer to Chapter 4 for further information.

H8585-AC" M.J8 to DB25 {male) Modem

Can be used with the BN25G cabie to con-

Adapter

nect high speed modems to DECserver 700.
Refer to Chapter 4 for further information.

"Adapters H8585-AB and HB8585-AC are not for connection to public networks in Sweden,

Germany, or Japan

3-10

Site Preparation and Maintenance

3.4 Installing Serial Cables and Devices on the DECserver 700-08
Use the following cables to connect EIA-232-D devices to the DECserver 700-08
25-pin D-connectors:

Table 3-2:

Cables and Adapters for the DECserver 700-08

Cable

Description

BC17D Shielded Null-Modem

Use this cable to connect asynchronous devices that use

Cable

modem signals.

BC22D Shieided Null-Modem

Use this cable to connect asynchronous devices that use

Cable

data leads only.

BC22E or BC22F Shielded

Use either of these cables to connect asynchronous mo-

Straight-Through Modem Cable

dems.

BC22R Shielded Null-Modem

Use this cable to connect to non-Digital host systems,

Cabie

devices using CTS/RTS flow control, and data switches
that require simulation of Ring Indicator (Rl) and/or Carrier
Detect (CD) signals.

HB8575-A (EIA-423-A to

Use this adapter to connect to 25-pin D-sub male connec-

E|A-232-D) Adapter

tors (for example; printers).

HB8575-B Adapter

Use this adapter to connect to S-pin D-sub male connectors.

H8571-D (EIA-423-A to

Use this adapter to connect to 25-pin D-sub female con-

EIA-232-D) Adapter

nectors.

V.24 to RS-232-C Adapter

Use this adapter to convert from V.24 to RS-232-C by
eliminating the extra signals that exist in V.24. EIA-232-D

Part No.12-27591-01

has the same signals as V.24; therefore, no adapter is
necessary.

' The V.24 to R3-232-C adapter must be fitted if the modem/eliminator has Data Signal Rate
Selector {DCE) on pin 23. Failure to comply with this could result in damage to the interface
module and modem or eliminator. If you are not sure what signals the modem or eliminator
provides, contact Digital Customer Services, or fit the adapter connector as a precaution.

Cabiing the Site

Cabling Requirements

3.5

Table 3-3 shows the maximum communication distances for different types of cable

used between the DECserver 700 and the Ethernet device. Table 3-4 shows the
maximum cable lengths for a number of data rates using DECserver 700 supported
line protocols.

The cabling requirements of the DECserver 700 are shown in the following sections.
Further information on cabling and configuring of local area networks and using
DECconnect system products, is provided in the DECconnect System Planning and
Configuration Guide.

Table 3-3:

Maximum Communications Distances — Ethemnet

From

Maximum Distance

DECserver 700

Transceiver

50 m (164 fi)

Cable Type

BNE3x-xx standard
transceiver cable

DECserver 700

Transceiver

12.5 m (41 ft)

BNE4x-xx office
transceiver cable

DECserver 700

DETPR

100 m (328 ft)

BN24F cable

‘DECserver 700

DESPR/DEMPR

185 m (606 ft)

HB8243-A cable

'No other device in ThinWire segment

3-12

Site Preparation and Maintenance

Table 3-4:

Maximum Cable Lengths! — DECserver 700 to Devices

Line Protocol

Data Rate (b/s)

Cable Length

EIA-432-A/V.10

48K

500 m (1600 ft)

96K

280 m (S00 fi)

19.2K

150 m (500 ft)

38.4K

85 m (280 ft)

57.6K

30
m (100 ft)

115.2K

12 m (40
ft

96 K

900 m (3000 ft)

DEC 423

EiA-232-E/V.28

19.2K

300 m (1000 f1)

384K

150 m (500 ft)

576K

60 m (200 f)

115.2K

30
m (100 f)

9.6 K

60 m (200 ft)

19.2K

30 m (100
ft)

384K

15 m (50 ft)

57.6 K

6m(201)

115.2K

3m(10h)

'For cable type H8245-A or HB246-B, 24 AWG, 4 pair, twisted pair

CAUTION
Do not use structured building winng (for example
Open DECconnect) or bundled type breakout cables at

baud rates above 38.4 KB. Separate point to point cables
are recommended at baud rates above 38.4 KB.

3.5.1

Standard Ethernet Connection

The transceiver cable must not exceed the maximum distances listed in Table 3-3.

Cabling the Site

3-13

10BaseT Ethernet Connection

3.5.2

The 10BaseT Ethernet installation must conform to the following configuration
rules:

The twisted-pair cable must not exceed the maximum distance listed in
Table 3-3.

No other signal should be used in the same cable sheath. For example, voice
and data signals cannot be run within the same sheath.
Unshielded twisted-pair cable must remain at least 30.48 cm (12 in) from any
type of high-voltage power device or electrical noise source.
ThinWire Ethernet Connection

3.5.3

The ThinWire cable segment must conform to the following configuration rules:
The maximum cable segment length must not exceed 185 m (606 ft).
There must be a 50-ohm terminator at each end of the cable segment, unless

the cable ends in a DEMPR or DESPR. Both these devices have built in
50-ohm terminators.

There must be only one ground per cable segment.
There must be at least 0.5 m {19 in) between T-connectors.

The maximum number of stations, between terminators, must not exceed 30
stations.

ThinWire cable segments must not be configured in a loop.
ThinWire cable segments must not have any branch segments.

3-14

Site Preparation and Maintenance

3.6

Installing the DECserver 700 in a Rack
You can rack mount the DECserver 700 any one of four ways (Table 3-5) depending
on how you install the brackets.

Tabie 3-5:

Installing the DECserver 700 Brackets

DECserver 700 Instaliation

Bracket Installation

1. Flush with rear facing outward

Flush with rear

2. Recessed 2.54 cm (1 in) with rear facing outward

Forward 2.54 cm (1 in) from rear

3. Flush with front facing outward

Flush with front

4. Recessed 2.54 cm (1 in) with front facing outward

Forward 2.54 cm (1 in) from rear

Figure 3-7 shows how to install the brackets in order to recess the DECserver 700.
Figure 3-8 shows how to remove the brackets.

CAUTION
The DECserver 700 can be wall mounted. If the DECserver is installed on a wall, the DECserver 700 must be
installed with the port connectors pointing up or pointing down. Digital Equipment Corporation does not sup-

ply wall mounting hardware for the DECserver 700.

Cabling the Site

3-15

CAUTION
To prevent damage to the DECserver 700, it is recommended that you not ship the DECserver 700 mounted
in a rack mounted cabinet.

Figure 3—7:

How to Fit the Brackets to Recess the DECserver 700

LKG-5082-91

3-16

Site Preparation and Maintenance

Figure 3-8:

Removing the Brackets

1. Place the DECserver 700 on a table top with the bracket overhanging

| 2. Place your thumb or finger on the bracket, where indicated.
-]

3. Push the bracket down and out.

| LK;;-SQ!S&QN

Cabling the Site

3-17

Connector and Cable Pin Descriptions

This chapter describes the pins of the DECserver 700 hardware connectors and the
cables used to interface to the DECserver 700 hardware. Wiring diagrams of the individual cables are included to help you in troubleshooting and cable building.

4.1

Connector Pin Descriptions
This section describes the pins for the following DECserver 700 connectors:
¢

Standard Ethernet/1EEE 802.3 transceiver interface

10BaseT Ethernet1EEE 802.3 transceiver interface

DECserver 700-08 serial port connectors

DECserver 700-16 serial port connectors

4-1

4.1.1

Standard Ethernet

The standard Ethernet connector matches the signal specifications described in The

Ethernet: A Local Area Network: Data Link Layer and Physical Layer Specification.

Figure 4-1 shows how the pins are numbered on a standard Ethernet transceiver in-

terface connector and lists the signals for the standard Ethernet connector pins.
Figure 4-1:

Pin Numbers and Signals for Standard Ethernet Connector

foooooooo
&ooooo
oo,;

PioNumber

e Domsson F‘resence-“—R

‘

fl&%mw:‘fw

#12 Voit Power
Reserved

LKG-2682-81)

4-2

Site Preparation and Maintenance

4.1.2

10BaseT Ethernet

The 10BaseT Ethernet connector is an 8-pin modular jack (MJ8). Figure 4-2 shows
how the pins are numbered on a 10BaseT Ethemnet connector and lists the signals for
the 10BaseT Ethernet connector.

Figure 4-2:

Pin Numbers and Signals for 10BaseT Ethermnet Connector

LKG-5511-01i

Connector and Cable Pin Descriptions

4-3

4.1.3

DECserver 700-08 Serial Line Ports

The DECserver 700-08 uses a 25-pin D-sub connector on the serial line ports. Figure
4-3 shows how the connector pins are numbered and describes the signals on each
pin.

Figure 4-3:

Pin Numbers and Signals for 25-Pin D-sub Connector

0000000000000
ioooooooooooo;

LKG-3133911

4-4

Site Preparation and Maintenance

4.1.4

DECserver 700-16 Serial Line Ports

The DECserver 700-16 uses an MJ8 connector on the serial ports. Figure 4-4 shows
how the pins are numbered on an MJ8 connector and lists the signals on the pins. You
can setpins 4, 5, and 8 toeither CTS, RTS, DSR or RI, DSRS, DCD. (Refer to Sec-

tion 3.3.)
Figure 4-4:

Pin Numbers and Signals for the MJ8 Connector

r Rl (s .'lected by saftwafe)

S 0r DSRS (selected by sofiware;

LKG-5512-9

Connector and Cable Pin Descriptions

4-5

4.2 Cable Connections
The following table describes the cable connections that are compatible with the
DECserver 700 Ethernet and serial line connectors. Wiring diagrams of individual
cables are provided for use in troubleshooting and cable building.
Table 4~1:

Cable Connections

Cable Type

Description

10BaseT Ethernet Cable

The 10BaseT Ethernet cable uses a 8-pin
modular plug on each end.

BC17D Shielded Null-Modem Cable

The BC17D is a 10-wire cable with a 25-pin
D-connector on each end. Can be used with
DECserver 700-8.

BC22D Shielded Null-Modem Cable

The BC22D is a 6-wire cable with a 25-pin
D-connector on each end. Can be used with
DECserver 700-8.

BC22E/F Shielded Straight-Through Modem

The BC22E or BC22F is a 25-wire cable with
a male 25-pin D-connector on one end and a
female 25-pin D-connector on the other end.
Can be used with DECserver 700-8,

Cable

BC22R Shielded Null-Modem Cable

The BC22R has a male 25-pin D-connector
on one end and a female 25-pin D-connector
on the other end. Can be used with
DECserver 700-8.
.

V.24 to RS-232-C Adapter

Use the V.24/RS-232-C adapter

Part # 12-27591-01

(12-27591-01) to convert the 25-pin D-connectors to RS-232-C format. The adapter
works by passing through the RS-232-C
sighals and blocking the others. EIA-232-D
has the same signals as V.24, therefore, no
adapter is necessaty. Can be used with
DECserver 700-8.
CAUTION
The V.24 to RS-232-C adapter must be fitted
if the modem/eliminator has Data Signal Rate
Selector (DCE) on pin 23. Failure to comply
with this could rest:!t in damage to the interface module and medem or eliminator. If you
are not sure what signais the modem or eliminator provides, contact Digital Customer Services, or fit the adapter connector as a precaution.

Site Preparation and Maintenance

Table 4-1 (Cont): Cable Connections
Cable Type

Description

BN25G MP8 to MP8 Equipment Cable

The BN25G is a four twisted-pair cable with
standard 8-pin modular plugs. Can be used
with the DECserver 700-16.

HB8584-AA MP8 to MMJ Adapter

The H8584-AA MP8 to MMJ adapter is used
to convert a serial port to a DECserver 300
terminal seiver configuration. Can be used
with the DECserver 700-16.

H8585-AA MJB to DBS Null-Modem
Adapter

The H8585-AA MJ8 to DB9 null-modem
adapter is used to convert the serial portto a
DB9 female connector for asynchronous connection to a PC port. Can be used with the
DECserver 700-16.

BN24H MP8 to MP6 Office Cable

The BN24H is a three twisted-pair cable with
a standard 8-pin modular plug on one end and
a 6-pin modular plug on the other. Can be
used with the DECserver 700-16.

H8585-AB MJ8 to DB25 Modem Adapter

The H8585-AB MJ8 to DB25 low speed modem adapter is used to convert a serial port to
the DB25 configuration. Can be used with the
DECserver 700-16.

H8585-AC MJ8 to DB25 Modem Adapter

The H8585-AC MJ8 to DB25 high speed modem adapter is used to convert a serial port to
the DB25 configuration. Can be used with
the DECserver 700-16.

NOTE

Adapters H8585-AB and H8585-AC are not for connection to public networks in

Sweden, Germany, or Japan. For a list of signals supported by the DECserver
700-16, refer to Section 3.3.

Connector and Cable Pin Descriptions

4-7

Figure 4-5:

Adapters and Connectors Used with the DECserver 700

V.24/R8-232-C Adapter
25-Pin temale

25-Pin male

D-connector

TMD

2 O~

ATS
CTs

RXD

DSR

25-Pin male

D-connector

GND 1 7 O~

4
5

4
-0 5

RTS
CTs

TMD
AXD

2 O-DC—O 2
3 O~
=0 3

7
8
120

7
8
O 12

GND
cb

RTS
CTS

O-DC-O 4
RTS
5 O~
FO 5 | CTs

LOC LPBK
DTR

180
20

CLK

RXD

15
17 O~

DSR

15 ] TXCLK
~C 17 ] RXCLK
DTR

prd

O 221

24|

O 21

230

TESTIND Cfi/

251 YESTIND

BC22E or BC22F Shielded Straight-Through

TXD
RXD

O 20|
O 6

DTR
DSR

ZQO-DC:-O 22]

8 O

DsAs|

CiK

7 § GND

DTR ] 200+
DSR
6 O

O 18
20§

REMLPBK | 210

DSRS

D-connector

TXCLK
RAXCLK

25-Pin female

D-connector

GND
cb
SM

BC22R Shielded Nuli-Modem

23 O

0 23|

\ /

DSRS

B8C22D Shielded Null-Modem

Modem Cabie
25-Pin temale

25-Pin male

XD
RXD
RTS

2 O
3
1 O

2
£ 3
4

@D
RYD
RTS

GNDY|
TXD{
RXD|

DSR

[

DSR

DTR ] 200

GND

O 7

GND

12§

SMmi

D-connector

CTs

5 O

DTR

200

SMmi

CT8

g 2]

23F

DSR

6 O-DC-O 6

(

DSR

GNDY 7
7 | aND
ol 8
rrs it a o-?%-o 31

Crs}

5 O4

Czj-J

DSR]
DTR]

6
=20

O 5

ars

CTS

6 | DSR
20}
DTR
22l

DTR

BN24F 10BaseT Ethernet Cabie
8-Pin
Modutar

Plug

D-connectior

DSR

FO 20}

OTR

25-Pin temate

D-connecior

D-connector

7
7 ] GND
2 0-':>C‘° 2 | TMD
3 O
-0 3 1 RXD

BC17D Shielded Null-Mcdem
25-Pin temale

25-Pin female

[oa]

Q 20]

D-connector

DSR

25-Pin temale

D-connector

8-Pin
Moduiar

Plug

O 8

RX-] 6O

ig
304

rx+]
TM}

101

O g | TX-—)

S
|
03 | s
o 1 | Rx+
=

=~
= Twisled pairs

LKG-7293-92!

4-8

Site Preparation and Maintenance

Figure 4-5 {Cont): Adapters and Connectors used with the DECserver 700
HB585-AC MJS to DB25 Modem Adapler
8-Pin

Modular
Jack

DSR

8-Pin

pB2s
Plug

Modaular
Jack

8 O4————30 g | DSR

D
gs

TXDGND Y

4 | RTS
crs

394 j-'-“m"-—-o 7 | SIGGND

3 ) R0

Axbano] 3 on
1

Ded

TXD

DTR

5 >

H8585-AB MJ8 to DB25 Modem Adapter

&Pin

DBS

Jack

DSR
DTR

DSRS
Rl

TMD

CTS

4 04—~

RTS

TXDGNDY

RXD
RXD GND]

20
10O

RXDGND | 1O

2|
1}

DRDY

TXD

GND

DTR

cTs

401"

RXD
ncD

RXDGND |

DTR

Plug

| — DSR
~-DTR
{ = TXD

- T))({% GND{

RXD

= RX

- rwoano]

6-Pin
Modular
Plug

10~

Plug

RXD GND

0 6 | DSR

40
30+

0 4 | RXD GND
TT§D GND
-g g

=0 5 | RXD

Tob—" “do |

N\
—TC
X
4

2 O _/(‘)t 0 2]

8-Pin
Modular

7O
&O

Jack

-0

RXDGND

TMD GND

TMD

1 | oTR

BN25G MP8 to MP8 Equipment Cable

6-Pin
Modutar

70 \_
-0 6 | DSR
sol |\\ —f° 5| roo

TXDGND | 30

BN24H MP8 to MP6 Office Cable
8-Pin
Modular

DSRS
R!

HB8584-AA MPS to MMJ Adapter

DSR

TXD

0 23]
O 221

Plug

DTR

40 4 | RTS

8-Pin
Modular

=0 g | CTS
0 7 | RTS

-0 20f

2 ) TMo

Jack

8O
7 O

8 } ocp

H8585-AA MJ8 to DBS Null-Modem Adapter
Modular

DB25
Plug

~—- - Twisted pairs

axp

‘CTSorf

TXD GND

“RATS or DSRS
TXD

DTR
"DSR or OCD

7
8 O~

8-Pin

Modular
Plug

0 2|

O 3§
0 4]

RXD GND -~

RXD-— -

TXDGND——
“CTS or Ri~—

< 5 | *RTS orDSRS - |
e

?
8]

—— v —

DTR~ =~ -9
"OSRorDCOD -~

*Software seiectable
— ~ Twisted pairs

LKG-7284-92)

Connector and Cable Pin Descriptions

S
Replacing and Adding Memory

This chapter shows how to replace a faulty single-in-linc memory module (SIM) and
add additional memory.
CAUTION
SIMs are sensitive to static and and are packed in antistatic packaging. Electro Stauc Discharge (ESD) can
cause failure of electronic components and can reduce
the long term reliabihity of the DECserver 700. Digital
Equipment Corporation recommends you use the antistatic kit (Part No. 29-26246-00) or ESD wnst strap
(Part No. 12-36157-01) when handling SIMs.

Replacing a Faulty Single-In-Line Memory Module

Disconnect all cables from the DECserver 700.

To replace a SIM:

Remove the DECserver 700 brackets. if fitted (Figure 5-1).

Remove the DECserver 700 cover (Figure 5-2).
Fit the anti-static kit (Figure 5-3).

Remove the faulty SIM (Figure 5-5).
Insert the replacement SIM in the connector (Figure 5-6).

Locate the SIM connectors (Figure 5-4).

5.1

Remove the anti-static kit.

Replace the cover (Figure 5-8).

10. Connect a terminal to the DECserver 700 (Section 7.5).
11. Reconnect the cables and test the DECserver 700 (refer 10 the DECserver 700
Hardware Installation Card).
NOTE
If the SIM memory is faulty, the DECserver 700 flaches
*“CTM if the faulty SIM is in connector 1 and “d” if the
faulty SIM is in c..anector 2. If you install the wrong
type SIM., the DECserver 700 flashes “n”. Remove or

replace the SIM to repair the DECserver 709.

12. Check status message 960 to verify memory size:
Local

5.2

-~-960~

Available

memory

Mbytes

Additional Memory Supported
You can increase the memory of your DECserver 700 by adding extra single-in-line
memory modules (SIMs). The DECserver 700 contains 4 Mbytes of SIM memory.
However, future releases of DECserver 700 software may contain additional func-

tions that require more SIM memory. You can install the additional SIM memory on
site. Adding an additional 1 Mbyte will increase the memory to 5 Mbytes and adding

an additional 4 Mbytes SIM will increase the memory to the maximum of 8 Mbytes.
The DECserver 700 supports:
®

| Mbyte SIMs (256K x 36) DEC Part No 20-35191-05,

Order Number MS40-WA
®

4 Mbytes SIMs (1M x 36) DEC Part No 20-37656-05,

Order Number MS40-WB
There ar- two SIM connectors on the DECserver 700 printed circuit board. One of
the connectors contains the factory installed 4 Mbytes SIM (Figure 5-4)

5-2

Site Preparation and Maintenance

The DECserver 700 supports only SIMs with the following access times:
e

R0 nano seconds

70 nano seconds

The DECserver 700 supports only SIMs in the following configurations:
e

4 Mbytes (one 4 Mbytes SIM in any connector)

5 Mbytes (one 1 Mbyte in one connector and one 4 Mbytes in the other connector)

8 Mbytes (one 4 Mbytes SIM per connector)
NOTE
The DECserver 700 supports only 36 bit wide SIMs. If

you are not using Digital Equipment Corporation SIMs

MS40-WA or MS40-WB, check the specification of
your SIM to verify that it is 36 bit wide. SIMs that are
not 36 bit wide will not work but may not be detected by

the DECserver 700 diagnostics.

Replacing and Adding Memory

Installing Extra Memory

—

Disc .nnect all cables from the DECserver 700.

Remove the DECserver 700 brackets, if fitted (Figure 5-1).

Remove the DECserver 700 cover (Figure 5-2).

To install a SIM:

Fit the anti-static kit (Figure 5-3).

Locate the SIM connectors (Figure 5-4).
N4

Remove the SIM from its wrappings and keep the memory label for step 10.

—

Remove the anti-static kit.
Replace the cover (Figure 5-8).

o®

Insert the extra SIM in the connector (Figure 5-7).

. Stick the memory label on the back of the DECserver 700.

. Connect a terminal to the DECserver 700 (Section 7.5).

5.3

. Reconnect the cables and test the DECserver 700 (refer to the DECserver 700
Hardware Installation Card).
NOTE
If the SIM memory is faulty, the DECserver 700 flashes
“CTM if the faulty SIM is in connector 1 and “d” if the
faulty SIM is in connector 2. If you install the wrong

type SIM, the DECserver 700 flashes “n”. Remove or
replace the SIM to repair the DECserver 700.

13. Check status message 960 to verify memory size:
Local

-960~

Available

memory

Mbytes

Site Preparation and Maintenance

Figure 5-i:

Removing the Brackets

1. Place the DECserver 700 on a table top with the bracket overhanging
the edge.

2. Place your thumb or finger on the bracket, where indicated.

-4 3. Push the bracket down and out.
LKG-5955-911

Replacing and Adding Memory

Figure 5-2:

Removing the Covers

.
T

Bottom of unit

LKG~5864~-91!

Site Preparation and Maintenance

Figure 5-3:

Fitting the Anti-Static Kit

; 4. Attach clip tbn :
power supply.

1. Place mat on work surface.

LKG-7302-91

Replacing and Adding Memory

Figure 5-4:

Locating the SIMs Connectors

LKG-7303-91!

Site Preparation and Maintenance

Figure 5-5:

Removing a SIM

Push latch
to release.

LKG~5955-81!

Replacing and Adding Memory

Figure 5-6:

Inserting the Replacement SIM

1. Align SIM with connector siot.

2. Insert SIM into connector slot.

. Push SIM back against connector.

4, Check that mounting pins are

cemered and latches are
grpping SIM.

)

Mounting pin

centered

Latch

gripping
SM

—

LKG~-5960-911

5-10

Site Preparation and Maintenance

Figure 5-8

Replacing the Covers

LKG~7304-911

5-12

Site Preparation and Maintenance

6
Replacing and Adding Flash RAM

This chapter shows how to replace or update a DECserver 70C Flash RAM Card.
NOTE

Electrostatic Discharge (ESD) can cause failure of electronic components and can reduce the long term reli-

ability of the DECserver 700. Digital Equipment
Corporation recommends you use the anti-static kit
(Part No. 29-26246-00) or ESD wrist strap (Part No.
12-36157-01) when installing a Flash RAM Card.

Replacing or Adding Flash RAM
To replace or install the Flash RAM Card:
1.

Disconnect all cables from the DECserver 700.

woA
W DN

6.1

Remove the DECserver 700 brackets, if fitted (Figure 5-1).

Remove the DECserver 700 cover (Figure 5-2).
Fit the anti-static kit (Figure 5-3).

Locate the Flash RAM connector or remove the faulty Flash RAM Card
(Figure 6-1).

6~1

Insert the replacement or Flash RAM Card update in the connector
(Figure 6-2).
NOTE
The Flash RAM socket is keyed. Ensure that you foliow
the instructions located on the Flash RAM card when
installing,

Remove the anti-static kit.

Replace the cover (Figure 5-8).

Connect a terminal to the DECserver 700 (Section 7.5).

10. Reconnect the cables and test the DECserver 700 (refer to the DECserver 700
Hardware Installation Card).
11. Check the status of the Flash RAM card by using the SHOW MEMORY
CONFIGURATION command.
Example
Local>

SHOW

Dynamic

MEMORY

RAM:

Non-volatile
Flash

CONFIGUKRATION

RAM:

34K

bytes
bytes

RAM:

Installed:

Yes

Total

size:

Boot

block:

Load

image:

Name :

bytes

valid
WWENC1

Size:

967756

Version:

DECseryver

bytes
700-16

BL34A-2C

NOTE
If Flash RAM is installed. but its boot block is 1nvalid,
then the total memory size will be displaved as zero.

Your Flash RAM can also be updated with the INITIALIZE command. This command
copies the load image to Flash RAM. For more information about the SHOW MEMORY
CONFIGURATION or the INITIALIZE command, refer to the Network Access Server
Management or Network Access Server

6-2

Commands manual.

Site Preparation and Maintenance

Figure 6-1:

lLocating the Flash RAM Card Connector

LKG~7303-811

Replacing and Adding Memory

Figure 8-2:

Insarting the Flash RAM Card

LKG~7305-821

6-4

Site Preparation and Maintenance

7
What to Do If You Have Problems

This chapter helps you identify and correct problems you may encounter during and
after the installation of the DECserver 700 hardware. The troubleshooting procedures are for diagnosing and correcting hardware-related problems only.
Notify the network manager if the troubleshooting procedures indicate the problem
is software related or if the procedures do not cerrect the problem. Additional software troubleshooting information is provided in the Nerwork Access Server Problem
Solving manual.

Use the following to diagnose and troubleshoot the DECserver 700 problems:
e

Seven-segment display

System OK LED

(Console port messages

A full list of seven-segment display codes are shown at the end of this chapter. Refer
to the Nerwork Access Server Management manual for the procedure to configure a
terminal to receive console port messages.

7.1

Diagnosing DECserver 700 Problems
Compare the state of the seven-segment display and the System OK LED with those
shown in Table 7-1 and go to the section indicated for information on corrective
action.

NOTE
On nower up, the seven-segment display will show an
“8". Allow about 3 minutes to elapse before determun-

ing the state of the display.
Table 7-1:

Display/Indications

Device

Definition

State

Indication

Corrective
Action

System OK LED

Diagnostic

Seven-segment

Status/

display

diagnostic

Self-test passed

Oof

'Fatai error

Section 7.4

Flashing

'Nonfatal error

Section 7.5

No power or

Section 7.2

display broken
“C", dn, n”

SiM failure

Section 7.3

Flashing

Fatai error

Section 6.4

Load request

Section 7.6

backoff

Rotating

DECserver 700

segment

software

pattern

executing

1A fatal error means that the network access server cannot function. A nonfatal error means
that the network access server can function with reduced capability (for example, one serial
port not working).

7.2

Seven-Segment Display Off and System OK LED Off
Problem

Power is not reaching the DECserver 700 hardware.

Correction: Secure the power cable at the DECserver 700 and at the wall outlet and
check the fuse in the power cable plug (if applicable).

7-2

Site Preparation and Maintenance

Correction: Check the wall outlet using another appliance or light, or plug the DECserver 700 power cord irto another outlet. If power is not available at the wall outlet,
check the wall outlet’s circuit breaker.

Correction: Check the power cord by substituting another one. If the first power
cord is defective, replace it.
Problem

The DECserver 700 hardware is defective.

Correction: Notify the network manager that the DECserver 700 must be returned
to Digital Equipment Corporation for repair or replacement. Refer to the Network
Access Server Problem Solving manual for information about returning the unit to
Digital Equipment Corporation.

7.3

System OK LED Off/Seven-Segment Display Flashing “C”, “d”,
or

Hn"

Problem

The DECserver 700 single-in-line memory (SIM) is faulty.
Correction: If the seven-segment display is flashing **C”, replace the SIM in con-

nector 1. If the seven-segment display is flashing “d”. replace the SIM in connector
2. If no SIM or the wrong type of SIM is installed, the seven-segment display flashes

“n”. Refer to Section 5.1 for the procedure to replace a faulty SIM.
NOTE

If the SIM is found to be faulty, return the SIM to Digital
Equipment Corporation.

What to Do if You Have Problems

7-3

7.4

System OK LED Off/Seven-Segment Display Flashing
Problem

A hardware error occurred that makes the DECserver 700 nonoperational.

Correction: There is no corrective procedure for this problem except for SIM fail-

ure (refer to note). Notify the network manager that the DECserver 700 must be returned to Digital Equipment Corporation for repair or replacement. Refer to the
Nerwork Access Server Problem Solving manual for information about returning the

unit to Digital Equipment Corporation.

7.5

System OK LED Flashing
If the System OK LED is flashing after power up. it indicates that the DECserver 700
has a nonfatal problem detected during seli-test. The error message on the console
terminal shows the primary problem.

To isolate and diagnose the problem, do the following:
1.

Connect a console terminal to the console port (default port is port 1) of the
DECserver 700, then power up the terminal. Refer to the Network Access

Server Management manual for procedure to set up the console port.
2.

Configure the terminal to operate with a speed of 9600 bits per second and a

character size of 8 bits (no parity). (Refer to the specific terminal user’s guide
if you need help setting up the terminal parameters.)
3.

Unplug the DECserver 700 power cord at the wall outlet, then reinsert it.

Read the error message that appears ou the terminal display.

The following sections list the error messages that occur in conjunction with System

OK LED flashing. Locate the section that describes the displayed error message and
follow the recommended corrective action.

7-4

Site Preparation and Maintenance

7.5.7

Error Message 952
Lovw -0 2~ Enter 7P to repeat self-test

Problem
Ai

o mor was detected on the Ethernet port.

Cor rection: The DECserver 700 displays this error message with error message
241. Refer . Section 7.5.3 for the correct action.

7.5.2

L.ovor Message 922
L+, o4l -922- Port hardware error on port n
Problem

The specified port has failed self-test.

Correction: There is no corrective procedure for this condition. Notify the network
manager that the DECserver 700 must be returned to Digital Equipment Corporation
for repair or for replacement. Refer to the Nerwork Access Server Problem Solving

manual for information about returning the unit to Digital Equipment Corporation.
7.5.3

Error Message 941

Local -941- Transceiver loopback error
Problem

The Ethemet port has failed self-test.

Correction: Standard Ethernet/ ThinWire Ethemet - Disconnect the cables or MAU
from the standard Ethernet connector and insert a loopback connector part number
12-22196-02. Test the hardware again by pulling out the power cord and reinserting

it. If this corrects the problem, the fault is external to the DECserver 700. If this fails
to correct the problem, notify the network manager thai the DECserver 700 must be
returned to Digital Equipment Corporation for repair or for replacement. Refer to the
Network Access Server Problem Solving manual for nformation about returning the

unit to Digital Equipment Corporation. If the DECserver 700 passes self-test, then
the problem lies in the cables or equipment conr.ected 1o the DECserver 700.

What to Do If You Have Problems

7-5

Correction: 10BaseT Ethernet — 10BaseT Ethernet cannot be checked by using a
loopback connector on the DECserver 700. Replace the cables and device that is
connected to the DECserver 700. If this corrects the problem, the fault is external to
the DECserver 700, If this fails to correct the problem, notify the network manager
that the DECserver 700 must be returned to Digital Equipment Corporation for repair or for replacement. Refer to the Network Access Server Problem Solving manual
for information about returning the unit to Digital Equipment Corporation. If the

DECserver 700 passes seli-test, then the problemlies in the cables orequipment con-

nected to the DECserver 700.
7.5.4

Error Message 967
Local -967- Parameter checksum error detected in NVRAM
Probiem

Self-test has detected a checksum error in nonvolatile random-access memory
(NVRAM) parameters.

Correction: Reset the DECserver 700 to the factory settings by pulling out the power cord and reinserting it while pressing the system reset switch until E shows on the

seven-segment display. If this fails to correct the problem, notify the network man-

ager that the DECserver 700 must be returned to Digital Equipment Corporation for
repair or for replacement. Refer to the Network Access Server Problem Solving
manual for information about returning the unit to Digital Equipment Corporation.

7.6

Seven-Segment Dispiay Has a “3”
If the seven-segment display has a *“3” after power up, the DECserver 700 has a

downline loading problem. To isolate and diagnose the problem, do the following:
1.

Connect a terminal to the console port of the DECserver 700, then power up

the terminal.
2.

Configure the terminal to operate with a speed of 9600 bits per second and a
character size of 8 bits (no parity). (Refer to the specific terminal user’s guide
if you need help setting up the terminal parameters.)

7-6

Initialize the DECserver 700 by pressing Ctrl/P on your console terminal.

Read the message that appears on the terminal display.
Site Preparatiocn and Maintenance

Section 7.6.1 and Section 7.6.2 describe the messages that might appear on the terminal.

7.6.1

Downline Load Starts, Then Fails

The following sequence of messages appears on the console terminal at various time
intervals:

Local -953- [IP] Attempting to locate load host, [ETHERNET]
Local -953- [MOP] Attempting to locate load host, [ISO8802]
Local -953~ [MOP] Attempting to locate load host, [ETHERNET]

Local -955- [MOP] host xx-xx-xx-xXx-xx-xx LOCATED [ETHERNET]
Local -956- [MOP] Requesting load from host xX-XX-XX-XX-XX-XX

Local -912- [MOP] Load failure, timeout
Problem

The host system failed to complete the downline load to the DECserver 700.

Correction: Copy the error message exactly as it appears on the console terminal
display and notify the network manager. For more information, refer to the Network
Access Server Problem Solving manual.

What to Do If You Have Problems

7-7

7.6.2

Downline Laad Doas Not Start
The following sequence of messages appears on the console terminal at various time
intervals:

Local -953- [IP] Attempting to locate load host, [ETHERNET]

Local -953- [MOP] Attempting to locate load host, [ISO8802]
Local -953- [MOP] Attempting to locate load host, [ETHERNET]
Local -951- network access server will retry operation in n seconds
Probiem

Load hosts not responding to the DECserver 700 downline load request within the

allotted timeout period.
Correction: Copy the error message exactly as it appears on the console terminal
display and notify the network manager. For more information, refer to the Network
Access Server Problem Solving manual.

1.7

Seven-Segment Display Codes
The following page lists and describes the codes that will be displayed during the
server internal self-test when the DECserver 700 goes through a power up and ini-

tialization.

7-8

Site Preparation and Maintenance

Off

No power or display broken

MM A TMMD

Iniual power on

Initialization
DECserver 700 internal test

SIM 1 test
SIM 2 test

DECserver 700 internal test

U WL WU

DECserver 700 internal test
NI extemal test

Firmware loading from Flash RAM

Requesting load
Load request backoff
Loading
Requesting dump

=N T

Dumping

ROTATING

Hardware revision number incompatible with firmware revision number
No SIiMs or wrong type SIMs installed

DECserver 700 is operating correctly

What to Do If You Have Problems

7-9

7.8

Network Activity LED

Table 7-2:

Network Activity LED

Ethernet Selected

Connection Status

LED Display

10BaseT

Open/incorrectly terminated
Correctly terminated / no network activity
Correctly terminated / network activity

OFF
ON
FLASHING (rate
independent of network

activity)

Standard Ethernet

Open
Correctly connected / no network activity
Correctly connected / network activity

OFF
OFF
Flashing or ON,
depending on network
activity

7-10

Site Preparation and Maintenance