Digital Equipment MicroVAX 3100 90 Guide

MicroVAX3100

Model90

Troubleshooting and Diagnostic

Information

Order Number: EK–A0607–TI. B01

December 1993

This manual describes the troubleshooting procedures and diagnostic com-

mands that you can use to solve basic problems with the MicroVAX 3100

Model 90 system.

Revision Information: This manual supersedes EK–A0607–TI. A01

Digital Equipment Corporation

Maynard, Massachusetts

December 1993

Digital Equipment Corporation makes no representations that the use of its products in the

manner described in this publication will not infringe on existing or future patent rights, nor do

the descriptions contained in this publication imply the granting of licenses to make, use, or sell

equipment or software in accordance with the description.

Possession, use, or copying of the software described in this publication is authorized only

pursuant to a valid written license from Digital or an authorized sublicensor.

The postpaid Reader’s Comments forms at the end of this document request your critical

evaluation to assist in preparing future documentation.

The following are trademarks of Digital Equipment Corporation: Digital, MicroVAX, OpenVMS,

RX, ThinWire, VAX, VAX DOCUMENT, and the DIGITAL logo.

S2452

This document was prepared using VAX DOCUMENT Version 2.1.

Contents

Preface ..................................................... v

1 Troubleshooting and Diagnosing Problems

1.1 Troubleshooting ...................................... 1–1

1.2 Using the Troubleshooting Table . . . . . . . . . . . . . . . . . . . . . . . . . 1–2

1.3 Diagnostic Tests and Commands . . . . . . . . . . . . . . . . . . . . . . . . . 1–9

1.3.1 Power-UpTests ................................... 1–10

1.3.2 Diagnostic Tests and Utilities . . . . . . . . . . . . . . . . . . . . . . . . 1–13

1.3.3 Power-Up Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–18

1.3.4 ConﬁgurationDisplay .............................. 1–21

1.3.5 ErrorDisplay..................................... 1–23

1.4 Contacting Digital Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–24

Index

Figures

1–1 Successful Power-Up Test Display . . . . . . . . . . . . . . . . . . . . . 1–10

1–2 DiagnosticTests................................... 1–13

1–3 StatusLEDDisplay................................ 1–25

Tables

1–1 Basic Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3

1–2 OptionCardTests ................................. 1–15

1–3 MicroVAX 4000-100A Tests . . . . . . . . . . . . . . . . . . . . . . . . . . 1–16

iii

Preface

This manual describes the troubleshooting procedures and diagnostic

commands that you can use to solve basic problems with the MicroVAX™ 3100

Model 90 system.

Audience

This manual is intended for people who have some experience with computers.

Structure of This Manual

This manual has one chapter and an index.

Additional Information

See the MicroVAX 3100 Model 90 Operator Information manual for the list of

associated and related documents.

Conventions

The following conventions are used in this manual:

Convention Description

MONOSPACE

Text displayed on the screen is shown in monospace type.

italic type Italic type emphasizes important information and indicates the

complete titles of manuals.

boldface type Boldface type in examples indicates user input. Boldface type in text

indicates the ﬁrst instance of terms deﬁned in the text.

Note A note contains information that is of special importance to the user.

Warning A warning contains information to prevent personal injury.

Troubleshooting and Diagnosing Problems

This chapter describes the troubleshooting procedures and diagnostic commands that

you can use to solve basic problems with the MicroVAX 3100 Model 90 system. It

contains information on the following:

• Troubleshooting

• Diagnostic tests and commands

• Contacting Digital™ Services

It also lists the information that you must give to your Digital Services

representative and where to ﬁnd this information.

1.1 Troubleshooting

If a problem occurs, you must ﬁrst make sure that all the cables, loopback

connectors, and terminators are correctly connected and that the connectors

are not damaged, for example, the pins may be broken or short-circuited.

Follow these steps:

1. Shut down the operating system following the procedures described in the

operating system documentation.

2. Turn off the console terminal and all the peripheral devices, such as

printers and modems.

3. Turn off all the expansion boxes.

4. Turn off the system unit.

5. Check that the following cables, if installed, are correctly connected at both

ends and that the connectors are not damaged:

• Console terminal cable (linking the console terminal to the system unit)

• Console terminal power cord

• System unit power cord

Troubleshooting and Diagnosing Problems 1–1

• Expansion box SCSI cables

• Expansion box power cords

• ThinWire™ Ethernet cable or standard Ethernet cable

6. Check that the following terminators, if installed, are correctly connected

and are not damaged:

• SCSI terminators

• ThinWire Ethernet terminator (T-connector and two terminators)

• Standard Ethernet loopback connector

If you have correctly followed steps 1 to 5, the on/off switches on all

the components are set to the off (O) position, and you have solved any

problems caused by incorrectly connected cables or terminators.

7. Set the on/off switches on the following equipment to the on (| ) position in

the following order:

a. Expansion boxes

b. Peripherals

c. Console terminal

d. System unit

The system responds with the power-up test display. If it does not, see

Section 1.2.

1.2 Using the Troubleshooting Table

Table 1–1 suggests the corrective actions for certain system problems. If you

have a problem with the system, follow these steps:

1. Write down the symptoms of the problem.

2. Check the Symptom column in Table 1–1 for a match.

3. Check the causes of the symptom in the Possible Cause column. If the

column lists more than one possible cause, check the possible causes and

their suggested solutions in the order listed.

4. Follow the advice in the Suggested Solution column.

5. See Section 1.4 if the problem persists.

1–2 Troubleshooting and Diagnosing Problems

Table 1–1 Basic Troubleshooting

Symptom Possible Cause Suggested Solution

System Problems

The system unit fan is off

or the power light is off. The power cord is not

connected. The power cord

may be faulty. The power

socket may not be working.

The system breaker or wall

outlet may have blown.

Make sure that all the power cords

are connected correctly at both

ends. Try a known good power cord

or test the power socket with an

appliance that works.

The overload protection

circuitry of the power

supply may have shut down

because of an abnormal

condition on the power line.

Turn the system off and then turn

it back on.

The power supply unit

(PSU) is faulty. Contact your Digital Services

representative.

The power-up display does

not show after 20 seconds. The terminal cable is not

correctly connected. Make sure that all the cables are

connected at both ends.

The terminal cable is not

connected to the correct

MMJ port.

Check the MMJ port to which the

terminal cable is connected. If this

port is not MMJ port 3, remove the

terminal cable and connect it to

MMJ port 3.

The power cord is not

connected. The power cord

may be faulty. The wall

outlet may not be working.

Make sure that all the power cords

are connected correctly at both

ends. Try a known good power cord

or test the power socket with an

appliance that works.

The terminal fuse may have

blown. Replace the blown terminal fuse.

See the terminal documentation.

The terminal settings may

be incorrect. See the MicroVAX 3100 Model 90

Operator Information manual for

the list of correct terminal settings.

See the terminal documentation for

information on how to set up the

terminal.

(continued on next page)

Troubleshooting and Diagnosing Problems 1–3

Table 1–1 (Cont.) Basic Troubleshooting

Symptom Possible Cause Suggested Solution

System Problems

The port to which the

terminal connects may be

faulty.

Try connecting the terminal to

another system. If this solution

works, the port to which the

terminal was connected is faulty.

If the terminal still does not

operate, it is faulty. In either

case, contact your Digital Services

representative.

The terminal cable may be

faulty. Connect the terminal cable and

the terminal to another system.

If the connected terminal works,

the DZ circuitry or MMJ connector

is faulty. Otherwise, the cable

is faulty. Contact your Digital

Services representative.

The power-up display

contains question marks. A diagnostic error has

occurred. See Section 1.4.

The power-up test display

contains unexpected

characters.

The terminal settings are

incorrect or the DZ circuitry

is faulty.

Make sure the terminal settings

are correct, then run the power-

up test again. If the terminal is

set correctly, contact your Digital

Services representative.

The system fails to boot the

operating system. The system defaults are

incorrectly set. Set the system defaults as

described in the OpenVMS Factory

Installed Software User Information

document, then try to boot the

system again. If the system still

fails to boot, contact your Digital

Services representative.

(continued on next page)

1–4 Troubleshooting and Diagnosing Problems

Table of contents

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