Tektronix MSO4104B Manuale utente

MSO4000B and DPO4000B Series

Digital Phosphor Oscilloscopes

ZZZ

Service Manual

*P077051201*

077-0512-01

MSO4000B and DPO4000B Series

Digital Phosphor Oscilloscopes

ZZZ

Service Manual

This document applies to ﬁrmware version 1.00 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

077-0512-01

or 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

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

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc.

14150 SW Karl Braun Drive

P.O. Box 500

Beaverton, OR 97077

USA

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

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

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

Table of Contents

General Safety Summary ......................................................................................... iv

Preface............................................................................................................. vii

Manual Conventions......................................................................................... vii

Where to Find Operating Information............................................................................ 1

Theory of Operation................................................................................................ 3

Power Supply................................................................................................... 3

I/O Board ....................................................................................................... 3

Main Board and Analog Board............................................................................... 3

Front-Panel Board ............................................................................................. 4

Adjustment Procedure.............................................................................................. 7

Required Equipment........................................................................................... 7

Before Adjustments............................................................................................ 8

Navigating During Adjustments ............................................................................. 8

Connecting the Equipment.................................................................................... 9

Factory Adjustment Procedure.............................................................................. 10

Setting the Calibrator Output Signal........................................................................ 13

Maintenance........................................................................................................ 19

Preventing ESD............................................................................................... 19

Inspection and Cleaning...................................................................................... 19

Module Removal.............................................................................................. 23

Troubleshooting............................................................................................... 25

Troubleshooting Procedure .................................................................................. 25

Unpacking and Repacking Instructions .................................................................... 29

Replaceable Parts List............................................................................................. 31

Parts Ordering Information .................................................................................. 31

Using the Replaceable Parts List............................................................................ 32

MSO4000B and DPO4000B Series Digital Phosphor Oscilloscopes Service Manual i

Table of Contents

List of Figures

Figure 1: Four-channel model MSO4000B and DPO4000B series block diagram ......................... 5

Figure 2: Two-channel model MSO4000B and DPO4000B series block diagram.......................... 6

Figure 3: Removing tabs from the front protective cover..................................................... 23

Figure 4: Module locator ......................................................................................... 24

Figure 5: Primary troubleshooting procedure .................................................................. 26

Figure 6: AC power supply troubleshooting procedure....................................................... 27

Figure 7: Module isolation troubleshooting procedure........................................................ 28

Figure 8: Exploded view, Front Panel assembly............................................................... 34

Figure 9: Display, Analog board, and Main board assembly ................................................ 36

Figure 10: Rear chassis and connecting modules.............................................................. 38

Figure 11: External parts ......................................................................................... 39

Figure 12: Rear chassis, showing cables and connectors ..................................................... 40

Figure 13: Main board, showing cable and connectors ....................................................... 41

ii MSO4000B and DPO4000B Series Digital Phosphor Oscilloscopes Service Manual

Table of Contents

List of Tables

Table 1: External inspection checklist........................................................................... 21

Table 2: Internal inspection checklist ........................................................................... 21

Table 3: Parts list column descriptions.......................................................................... 32

Table 4: Replaceable parts – Front Panel assembly ........................................................... 33

Table 5: Replaceable parts – Display, Analog board, and Main board ...................................... 35

Table 6: Replaceable parts – Rear chassis and connecting modules ........................................ 37

Table 7: Replaceable parts – external parts..................................................................... 39

Table 8: Replaceable parts – cable and connectors, rear chassis............................................. 40

Table 9: Replaceable parts – cable and connectors, Main board............................................. 41

MSO4000B and DPO4000B Series Digital Phosphor Oscilloscopes Service Manual iii

General Safety Summary

General SafetySummary

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.

To Avoid Fire or Personal

Injury

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.

Connect and disconnect properly. De-energize the circuit under test before

connecting or disconnecting the current probe.

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.

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.

Power disconnect. The power cord disconnects the product from the power source.

Donotblockthepowercord;itmustremain accessible to the user at all times.

Do not operate without covers. Do not operate this product with covers or panels

removed.

Do not operate with suspected failures. If you suspect that 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.

iv MSO4000B and DPO4000B Series Digital Phosphor Oscilloscopes Service Manual

General Safety Summary

TermsinThisManual 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.

Symbols and Terms on the

Product

These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read

the marking.

WARN ING indicates an injury hazard not immediately accessible as you

read the marking.

CAUTION indicates a hazard to property including the product.

The following symbol(s) may appear on the product:

MSO4000B and DPO4000B Series Digital Phosphor Oscilloscopes Service Manual v

General Safety Summary

vi MSO4000B and DPO4000B Series Digital Phosphor Oscilloscopes Service Manual

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