Fluke 9000A-006 Manual de usuario

9000A-006

ASYNCHRONOUS SIGNATURE PROBE

Service Manual

P/N 783944

MAY 1986

WARRANTY

COVERAGE

Fluke warrants the 9000A-006 Asynchronous Signature Probe to be free from defects in material and

workmanship under normal use and service for a period of one (1) year from the date of shipment. This

warranty extends only to the original purchaser and does not apply to any product that has been misused,

altered, or has been subjected to abnormal conditions of operation.

Fluke’s obligations under this warranty is limited to repair or replacement of a product that is returned to an

authorized Service Center within the warranty period, provided that we determine that the product is

defective. If we determine that the failure has been caused by misuse, alteration, or abnormal conditions of

operation, or if the warranty period has expired, we will repair the Probe and bill you for the reasonable repair

cost.

SERVICE

If a failure occurs, send the product, postage prepaid, to the closest Service Center with a description of the

difficulty. Repairs will be made or the product replaced, and it will be returned, transportation prepaid. Fluke

assumes NO risk for damage in transit.

DISCLAIMER

THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, EXPRESS

OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY,

FITNESS, OR ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE. FLUKE SHALL NOT BE LIABLE

FOR AND SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT, TORT,

OR OTHERWISE.

GETTING ANSWERS AND ADVICE

To enhance your use of this Product, Fluke will be happy to answer your questions about applications and

use. Address all correspondence to: JOHN FLUKE MFG. CO., INC., P.O. BOX C9090, EVERETT,

WASHINGTON 98206, ATTN: Sales Department. European customers should contact FLUKE (Holland) B.V.,

P.O. BOX 5053, 5004 EB, TILBURG, THE NETHERLANDS.

JOHN FLUKE MFG. CO., INC., P.O. BOX C9090, EVERETT, WASHINGTON 98206

i(continued on page ii)

9000A-006 Service

Table of Contents

SECTION TITLE PAGE

1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1-1. PURPOSE OF THE EQUIPMENT . . . . . . . . . . . . . . . . . . 1-1

1.2 EQUIPMENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . 1-2

1.3. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.4. The Clock Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.5. The Asynchronous Signature Module . . . . . . . . . . . . . . . 1-3

1-6. The Cassette Tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-7. ORGANIZATION OF THIS MANUAL . . . . . . . . . . . . . . 1-3

1-8. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 THEORY OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-2. GENERAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2-3. DETAILED BLOCK,DIAGRAM DESCRIPTION . . . . . . 2-5

2-4. Clock Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2-5. Control Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2-6. Gate Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2-7. CRC Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2-8. Events Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2-9. Waveform Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

3 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-2. REQUIRED PERFORMANCE TEST EQUIPMENT . . . . 3-1

3-3. REPAIR PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-4. SMD Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-5. MOS Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-6. DISASSEMBLY PROCEDURE . . . . . . . . . . . . . . . . . . . . 3-2

3-7. PRELIMINARY TROUBLESHOOTING . . . . . . . . . . . . . 3-3

3-8. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3-9. Module or Troubleshooter Faulty? . . . . . . . . . . . . . . . . . 3-3

3-10. Module or Interface Pod Faulty? . . . . . . . . . . . . . . . . . . . 3-3

3-11. Disconnecting the Signature Module . . . . . . . . . . . . . . . 3-3

3-12. SIGNATURE TROUBLESHOOTING PROCEDURES . . 3-4

3-13. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3-14. How the Stimulus Programs Work . . . . . . . . . . . . . . . . . 3-5

9000A-006 Service

TABLE OF CONTENTS,

continued

SECTION TITLE PAGE

3-15. Test Setup, Defective Unit (UUT) . . . . . . . . . . . . . . . . . . 3-5

3-16. Taking Signatures with the Test Troubleshooter . . . . . . . 3-6

4 LIST OF REPLACEABLE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

5 SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

TABLE OF CONTENTS 5-1

iii

9000A-006 Service

List of Tables

TABLE TITLE PAGE

1-1. Asynchronous Signature Probe Option Specifications . . . . . . . . . . . 1-4

2-1. Signature Module Op Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

3-1. Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3-2. UUT Test Setup, Control/Gate Sections . . . . . . . . . . . . . . . . . . . . . . 3-6

3-3. Test Troubleshooter Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

4-1. 9000A-006 Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4-2. A1 Main PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4-3. Clock Module Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4-4. A2 Clock Module PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

5-1. Signature Module Signatures (with Stimulus Program 1). . . . . . . . . 5-10

5-2. Signature Module Signatures (with Stimulus Program 2). . . . . . . . . 5-11

9000A-006 Service

List of Illustrations

FIGURE TITLE PAGE

1-1. Elements of the Asynchronous Signature Option . . . . . . . . . . . . . . . 1-2

2-1. Signature Module, General Block Diagram . . . . . . . . . . . . . . . . . . . 2-3

2-2. Control Section Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-3. Gate Section, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2-4. CRC Section, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

2-5. Events Section, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

2-6. Waveform Section, Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

3-1. Location of Asynchronous Signature Module . . . . . . . . . . . . . . . . . 3-2

4-1. 9000A-006 Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4-2. A1 Main PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4-3. A2 Clock Module PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

5-1. A1 Main PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5-2 A2 Clock Module PCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

9000A-006 Service

1-1

9000A-006 Service

Section 1

Introduction

PURPOSE OF THE EQUIPMENT 1-1.

Signature troubleshooting supplements the basic functions of the Troubleshooter. This

method of troubleshooting is used in situations where the test functions of the

Troubleshooter alone do not provide adequate results. This situation usually exists when a

fault occurs in a circuit area that operates asynchronously with respect to the processor. In

this case, the troubleshooter cannot detect the fault since it is able to examine only

processor-synchronous events.

Although the Troubleshooter may not have “visibility” or access into some areas of the

UUT, it is usually able to stimulate all functional areas in a consistent and repetitive

manner, This type of stimulus is required to take meaningful signatures. The ability of the

Troubleshooter to stimulate the UUT makes it an effective tool for signature-type fault

isolation methods.

The Asynchronous Signature Option 9000A-006 provides additional Troubleshooting

capability for the 9000A series Troubleshooters by using signature-type fault-isolation,

events counting, and test-node waveform capture. Control signals from the UUT establish

the signature and allow asynchronous operation with respect to the microprocessor bus

cycle, i.e., the Pod.

The Asynchronous Signature Option takes signatures at UUT test nodes operating at clock

speeds up to 20 MHz. For counting events, the number of data transitions appearing at the

probe are accumulated up to a total of 16,777,215.

A waveform display feature permits the Troubleshooter to display a representation of the

data appearing at the data probe. The waveform feature is useful for determining the time

interval between two signal transitions. The waveform displayed shows the last 640

nanoseconds of data received by the probe before the signature-gathering operation is

terminated. The display shows logic high, logic low, and tri-state levels.

During troubleshooting operations, the Troubleshooter display notifies the operator of all

test conditions and values. The basic functions of the Troubleshooter, in conjunction with

a suitable Interface Pod, provide the necessary stimulus for the UUT during signature

troubleshooting operations.

All of these features may be accessed while operating the Troubleshooter in the immediate

mode by using the keyboard and display. All features may also be accessed by the use of

test programs that pass control and test results through registers.

9000A-006 Service

1-2

EQUIPMENT DESCRIPTION 1-2.

General 1-3.

As shown in Figure 1-1, the Asynchronous Signature option consists of the Asynchronous

Signature Module mounted within the Troubleshooter case, a separate Clock Module that

connects to the Troubleshooter, and operating programs contained on a magnetic tape

cassette. (For the Model 9020A, programs are executed from within the host computer.)

FIGURE 1-1. Elements of the Asynchronous Signature Option

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