Digital Equipment VAX 4000 105A Guía

VAX4000Model105A/106A

Troubleshooting and Diagnostics

Information

Order Number: EK–515AA–TS. B01

MAY 1995

This manual describes the troubleshooting and diagnostic procedures that

you can use to solve basic problems with VAX 4000 Model 105A and Model

106A systems.

Digital Equipment Corporation

Maynard, Massachusetts

May 1995

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: DECnet, Digital, OpenVMS,

RRD42, RRD43, RX, ThinWire, TK, VAX, VAXcluster, VAX DOCUMENT, VT, and the

DIGITAL logo.

All other trademarks and registered trademarks are the property of their respective holders.

S2852

This document was prepared using VAX DOCUMENT Version 2.1.

Contents

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

1 Troubleshooting and Diagnosing Problems

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

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

2 Diagnostic Tests and Commands

2.1 Diagnostic Tests and Commands ......................... 2–1

2.1.1 Power-Up Tests ................................... 2–1

2.1.2 Self-Tests ........................................ 2–4

2.2 Contacting Digital™ Services. ........................... 2–8

Index

Examples

2–1 Show Conﬁguration Command ........................ 2–4

2–2 Listing Diagnostics ................................ 2–5

Figures

2–1 Status LED Display ................................ 2–9

iii

Tables

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

2–1 Status LED Display and Break Enable Meanings . . ....... 2–10

Preface

This manual describes the troubleshooting and diagnostic procedures that you

can use to solve basic problems with VAX 4000 Model 105A/106A systems.

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

computers.

This manual has two chapters and an index.

See VAX 4000 Model 105A/106A Operator Information, EK–513AA–OP, 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 procedure that you can use to solve

basic problems with VAX 4000 Model 105A and Model 106A systems.

1.1 Troubleshooting Procedure

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

• Expansion box Q–bus cables

• Expansion box DSSI cable(s)

• Expansion box power cords

• ThinWire™ Ethernet cable or standard Ethernet cable

Troubleshooting and Diagnosing Problems 1–1

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

and are not damaged:

• DSSI terminator(s)

• 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 1.2.

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 2.2 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 105A

/106A 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 OpenVMS Factory

Installed Software User Guide, then

try booting the system again. If

the system still fails to boot, contact

your Digital services representative.

EF/RF-Series Integrated Storage Element (ISE) Problems1

A write error message is

displayed; the Write-Protect

button glows orange. For

EF/RF ISEs,

Mounted

wrtlck

displays when DCL

command SHOW

DEVICE DI is issued.

The ISE is write-protected. Press and release the Write-Protect

button. For EF/RF, remove Write-

Protect.

The fault indicator is lit or

blinking. The bus node ID plug is not

installed. Install the appropriate plug.

Two or more devices have

the same node ID on the

same bus.

Make sure all devices and

controllers or adapters on the

same bus have unique IDs.

1Only RF3X drives are internal; all other RF-series drives are external.

(continued on next page)

1–4 Troubleshooting and Diagnosing Problems

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