Digital Equipment VAX 4000 100 Leitfaden

VAX4000

Model100

Troubleshooting and Diagnostics

Information

Order Number: EK–468AA–TS. A01

September 1992

This manual describes the troubleshooting and diagnostic procedures that

you can use to solve basic problems with the VAX 4000 Model 100 system.

Revision Information: This is a new manual.

Digital Equipment Corporation

Maynard, Massachusetts

September 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.

The software described in this document is furnished under a license and may be used or copied

only in accordance with the terms of such license.

No responsibility is assumed for the use or reliability of software on equipment that is not

supplied by Digital Equipment Corporation or its afﬁliated companies.

Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to

restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer

Software clause at DFARS 252.227-7013.

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, RX, ThinWire, VAX,

VAX DOCUMENT, VMS, and the DIGITAL logo.

S2012

This document was prepared using VAX DOCUMENT, Version 2.1.

Contents

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

1 Troubleshooting and Diagnosing Problems

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

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

1.2 Diagnostic Tests and Commands ......................... 1–7

1.2.1 Power-Up Tests ................................... 1–8

1.2.2 Self-Tests ........................................ 1–10

1.3 Contacting Digital Services . . ........................... 1–14

2 Running the Diagnostic Monitor

2.1 MDM Limitations . ................................... 2–1

2.2 Preparing to Run MDM ................................ 2–2

2.2.1 Preparing to Run MDM on a Diskless or Tapeless System. . 2–2

2.2.2 Preparing to Run MDM on an RF-Series Integrated Storage

Element (ISE) or Hard Disk.......................... 2–3

2.2.3 Preparing to Run MDM on a DSSI VAXcluster . .......... 2–3

2.2.3.1 MDM on a DSSI VAXcluster with One TKxx Tape

Drive ........................................ 2–4

2.2.3.2 MDM on a DSSI VAXcluster with Two TKxx Tape

Drives ....................................... 2–5

2.3 Starting MDM ....................................... 2–6

2.3.1 Tape Drive Instructions . . ........................... 2–6

2.3.1.1 Booting MDM Manually .......................... 2–7

2.3.1.2 Booting MDM Automatically . . . ................... 2–7

2.3.2 RRD-Series Compact Disc Instructions ................. 2–8

2.4 MDM Introductory Display . . ........................... 2–9

2.5 Main Menu Options ................................... 2–9

2.5.1 Test the System Option . . ........................... 2–10

2.5.2 Display System Conﬁguration and Devices Option ........ 2–11

iii

2.5.3 Display the System Utilities Menu Option............... 2–13

2.5.3.1 IOADDRES Function ............................ 2–14

2.5.3.2 Update Drive Unit Number for RRD-Series Function . . . 2–14

2.5.4 Display the Service Menu Option...................... 2–14

2.5.5 Display the Connect/Ignore Menu Option ............... 2–15

2.5.6 Select Single Device Tests Option ..................... 2–15

2.6 Exiting MDM ........................................ 2–17

Index

Examples

1–1 Show Conﬁguration Command ........................ 1–10

1–2 Listing Diagnostics ................................ 1–11

2–1 Typical Conﬁguration ............................... 2–12

Figures

1–1 Status LED Display ................................ 1–15

Tables

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

1–2 Status LED Display and Break Enable Meanings . . ....... 1–15

Preface

This manual describes the troubleshooting and diagnostic procedures that you

can use to solve basic problems with the VAX 4000 Model 100 system.

Audience

This manual is intended for people who have had some experience using

computers.

Structure of This Manual

This manual has two chapters and an index.

Additional Information

See the VAX 4000 Model 100 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 either in the text, in the

glossary, or both.

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

Troubleshooting and Diagnosing Problems

This chapter describes the troubleshooting procedures and diagnostic

commands that you can use to solve basic problems with the VAX 4000 Model

100 system. It contains information on the following subjects:

• Troubleshooting

• Diagnostic tests and commands

• Contacting Digital™ Services

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

representative and tells you 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

• Expansion box SCSI cables

Troubleshooting and Diagnosing Problems 1–1

• Expansion box Q–bus cables

• Expansion box DSSI cable

• 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:

• DSSI terminator

• SCSI terminator

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

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 1.1.1.

1.1.1 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 1.3 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.

Make sure that all the power cords

are connected correctly at both

ends. Try a power cord that works

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 console terminal is

plugged into port 0. The console only functions via port

3. Move connection to port 3.

The power cord is not

connected. The power cord

may be faulty. The power

socket may not be working.

Make sure that all the power cords

are connected correctly at both

ends. Try a power cord that works

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 VAX 4000 Model 100

Operator Information manual for

the list of correct terminal settings.

See the terminal documentation

for information on setting up the

terminal.

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.

(continued on next page)

Troubleshooting and Diagnosing Problems 1–3

Table 1–1 (Cont.) Basic Troubleshooting

Symptom Possible Cause Suggested Solution

System Problems

The terminal cable may be

faulty. Connect the terminal cable and

the terminal to another system. If

the connected terminal works, the

console circuitry or MMJ connector

is faulty. Otherwise, the cable

is faulty. Contact your Digital

Services representative.

The break/enable switch is

in the wrong position. Turn off the system unit. Set the

break/enable switch to the down

position, then turn on the system

unit.

The power-up test display

contains unexpected

characters.

The terminal settings are

incorrect or the console

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 VMS Factory

Installed Software User Guide,

then try booting the system again.

If the system still fails to boot,

contact your Digital Services

representative.

RRD42 Compact Disc Drive Problems

The drive does not accept

the caddy. The disc is upside-down in

the caddy or it is not placed

correctly in the caddy.

Remove the disc from the caddy

and reinsert it properly.

The eject button fails to

eject the caddy. The eject button is disabled

by software. Reenable the eject button or

manually eject the caddy.

The system does not have

power. Set the system unit on/off switch to

the on (|) position and press the

eject button again.

(continued on next page)

1–4 Troubleshooting and Diagnosing Problems

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