Tektronix 4000 Series Bedienungsanleitung

Service Manual

Tektronix 4000 Series

Digital Phosphor Oscilloscopes

071-2137--00

This document applies to firmware version 2.00

and above.

Warning

The servicing instructions are for use by qualified

personnel only. To avoid personal injury, do not

perform any servicing unless you are qualified to

do so. Refer to all safety summaries prior to

performing service.

www.tektronix.com

suppliers, and are protected by national copyright laws and international treaty provisions.

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes

that in all previously published material. Specifications and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

TekLink is a trademark of Tektronix, Inc.

Tektronix is an authorized licensee of the CompactFlash®trademark.

Contacting Tektronix

Tektronix, Inc.

14200 SW Karl Braun Drive

P.O. Box 500

Beaverton, OR 97077

USA

For product information, sales, service, and technical support:

HIn North America, call 1-800-833-9200.

HWorldwide, visit www.tektronix.com to find contacts in your area.

Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual i

Table of Contents

General Safety Summary iii...................................

Service Safety Summary v....................................

Environmental Considerations vii...............................

Preface ix...................................................

Manual Conventions ix..............................................

Related Documentation ix...........................................

Operating Information 1--1.....................................

Theory of Operation 2--1.......................................

Block Diagrams 2--1.................................................

Power Supply 2--2...................................................

I/O Board 2--2......................................................

Main Board 2--2.....................................................

Front--Panel Board 2--3...............................................

Adjustment Procedures 3--1.....................................

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

Overview of the Adjustment Process 3--2.................................

Factory Adjustment Procedure 3--4......................................

Completing the Procedure 3--8.........................................

Maintenance 4--1..............................................

Preventing ESD 4--1.................................................

Inspection and Cleaning 4--1...........................................

General Care 4--2................................................

Interior Cleaning 4--2.............................................

Exterior Cleaning 4--2............................................

Overview of Removal Procedures 4--6...................................

Removal Procedures 4--8..............................................

Troubleshooting 4--12.................................................

Troubleshooting Procedure 4--13.........................................

Unpacking and Repacking Instructions 4--16...............................

Mechanical Parts List 5--1......................................

Parts Ordering Information 5--1.........................................

Using the Replaceable Parts List 5--2....................................

Table of Contents

ii Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual

List of Tables

Table 4--1: External inspection check list 4--3......................

Table 4--2: Internal inspection check list 4--4......................

List of Figures

Figure 2--1: Oscilloscope module interconnections 2--1...............

Figure 3--1: Rear panel 3--4.....................................

Figure 3--2: Utility page menu 3--5...............................

Figure 3--3: Calibration selection 3--6.............................

Figure 3--4: Factory information dialog 3--6.......................

Figure 3--5: Digital channel input 3--10............................

Figure 4--1: Locator for trim and cabinet removal 4--7...............

Figure 4--2: Locator for internal modules 4--8......................

Figure 4--3: Primary troubleshooting procedure 4--13................

Figure 4--4: AC power supply troubleshooting procedure 4--14.........

Figure 4--5: Module isolation troubleshooting procedure 4--15.........

Figure 5--1: Exploded view, case 5--5..............................

Figure 5--2: Exploded view: DPO4000 front panel and display,

4-channel instruments 5--7...................................

Figure 5--3: Exploded view: MSO4000 front panel and display,

4-channel instruments 5--9...................................

Figure 5--4: Exploded view: DPO4000 front panel and display,

2-channel instruments 5--11...................................

Figure 5--5: Exploded view: MSO4000 front panel and display,

2-channel instruments 5--13...................................

Figure 5--6: Exploded view: DPO4000 Power Supply

and I/O board 5--15.........................................

Figure 5--7: Exploded view: MSO4000 Power Supply

and I/O board 5--17.........................................

Figure 5--8: Exploded view: DPO4000 Main board,

Inverter board, and side fans 5--19.............................

Figure 5--9: Exploded view: MSO4000 Main board,

Inverter board, and side fans 5--21.............................

Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual iii

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to

this product or any products connected to it.

To avoid potential hazards, use this product only as specified.

Only qualified personnel should perform service procedures.

Use Proper Power Cord. Use only the power cord specified for this product and

certified for the country of use.

Connect and Disconnect Properly. Do not connect or disconnect probes or test

leads while they are connected to a voltage source.

Ground the Product. This product is grounded through the grounding conductor

of the power cord. To avoid electric shock, the grounding conductor must be

connected to earth ground. Before making connections to the input or output

terminals of the product, ensure that the product is properly grounded.

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings

and markings on the product. Consult the product manual for further ratings

information before making connections to the product.

The inputs are not rated for connection to mains or Category II, III, or IV

circuits.

Connect the probe reference lead to earth ground only.

Do not apply a potential to any terminal, including the common terminal, that

exceeds the maximum rating of that terminal.

Do Not Operate Without Covers. Do not operate this product with covers or panels

removed.

Do Not Operate With Suspected Failures. If you suspect there is damage to this

product, have it inspected by qualified service personnel.

Avoid Exposed Circuitry. Do not touch exposed connections and components

when power is present.

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry.

Provide Proper Ventilation. Refer to the manual’s installation instructions for

details on installing the product so it has proper ventilation.

ToAvoidFireor

Personal Injury

General Safety Summary

iv Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual

These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result

in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in

damage to this product or other property.

These terms may appear on the product:

HDANGER indicates an injury hazard immediately accessible as you read the

marking.

HWARNING indicates an injury hazard not immediately accessible as you

read the marking.

HCAUTION indicates a hazard to property including the product.

The following symbols may appear on the product:

CAUTION

Refer to Manual

Protective Ground

(Earth) Terminal Chassis Ground Mains Connected

ON (Power) Push button OUT

Push button

Terms in this Manual

Symbols and Terms

on the Product

Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual v

Service Safety Summary

Only qualified personnel should perform service procedures. Read this Service

Safety Summary and the General Safety Summary before performing any service

procedures.

Do Not Service Alone. Do not perform internal service or adjustments of this

product unless another person capable of rendering first aid and resuscitation is

present.

Disconnect Power. To avoid electric shock, switch off the instrument power, then

disconnect the power cord from the mains power.

Use Care When Servicing With Power On. Dangerous voltages or currents may

exist in this product. Disconnect power, remove battery (if applicable), and

disconnect test leads before removing protective panels, soldering, or replacing

components.

To avoid electric shock, do not touch exposed connections.

Service Safety Summary

vi Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual

Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual vii

Environmental Considerations

This section provides information about the environmental impact of the

product.

Observe the following guidelines when recycling an instrument or component:

Equipment Recycling. Production of this equipment required the extraction and

use of natural resources. The equipment may contain substances that could be

harmful to the environment or human health if improperly handled at the

product’s end of life. In order to avoid release of such substances into the

environment and to reduce the use of natural resources, we encourage you to

recycle this product in an appropriate system that will ensure that most of the

materials are reused or recycled appropriately.

The symbol shown to the left indicates that this product

complies with the European Union’s requirements

according to Directive 2002/96/EC on waste electrical and

electronic equipment (WEEE). For information about

recycling options, check the Support/Service section of the

Tektronix Web site (www.tektronix.com).

Mercury Notification. This product uses an LCD backlight lamp that contains

mercury. Disposal may be regulated due to environmental considerations. Please

contact your local authorities or, within the United States, the Electronics

Industries Alliance (www.eiae.org) for disposal or recycling information.

This product has been classified as Monitoring and Control equipment, and is

outside the scope of the 2002/95/EC RoHS Directive. This product is known to

contain lead, cadmium, mercury, and hexavalent chromium.

Product End-of-Life

Handling

Restriction of Hazardous

Substances

Environmental Considerations

viii Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual

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