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TBS1000B and TBS1000B-EDU Series

ZZZ

Digital Storage Oscilloscopes

Service Manual

*P077089702*

077-0897-02

TBS1000B and TBS1000B-EDU Series

ZZZ

Digital Storage Oscilloscopes

Service Manual

Revision A

This document applies to TBS1000B and TBS1000B-EDU models with no display adapter module.

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.tek.com

077-0897-02

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries 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.

OpenChoice is a registered trademark of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P.O . Bo x 50 0 Beaverton, OR 97077 USA

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

In North America, call 1-800-833-9200. Worldwide, visit www.tek.com to ﬁnd contacts in your area.

Table of Contents

Importantsafety information..................................................................................... iii

General safety summary ..................................................................................... iii

Service safety summary...................................................................................... vi

Terms in t h i

Symbols and terms on the product......................................................................... vii

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

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

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

Inspection andCleaning ........................................................................................... 1

General

Interior Cleaning .......................................................................................... 1

Exterior Cleaning ......................................................................................... 2

Exterior Inspection........................................................................................ 2

Interior Inspection ........................................................................................ 3

Cleaning Procedure, Interior............................................................................. 4

stment procedures............................................................................................. 5

Adju

Required equipment ........................................................................................... 5

Adjustmentprocedure......................................................................................... 6

Enable the Service menu ................................................................................. 6

Adjustment procedure.................................................................................... 8

Diagrams ........................................................................................................... 13

placeable Parts.................................................................................................. 15

Parts Ordering Information .................................................................................. 15

Using theReplaceable Parts List............................................................................ 16

Parts Lists andExploded Views............................................................................. 17

s manual ........................................................................................ vii

Care............................................................................................... 1

TBS1000B/-EDU Series Oscilloscope Service Manual i

Table of Contents

List of Tables

Table 1: External inspection checklist............................................................................ 2

Table 2: Int

Table 3: Required equipment...................................................................................... 5

Table 4: Adjustment steps ......................................................................................... 9

Table 5: Replaceable parts list ................................................................................... 16

Table 6: Replaceable parts — (LCD, Front panel, andFront case).......................................... 17

Table 7: Replaceable parts — (Power supply, Main board, Rear case). .. ... . ............................... 18

ernal inspection checklist ............................................................................ 3

ii TBS1000B/-EDU Series Oscilloscope Service Manual

Important safety information

This manual contains information and warnings that must be followed by the user for safe operation and to keep the product in a safe condition.

To safely perform service on this product, additional information is provided at the end of this section. (See page vi, Service safety summary.)

General safety summary

Use the product only as speciﬁed. Revie avoid injury and prevent damage to this product or any products connected to it. Carefully read all instructions. Retain these instructions for future reference.

Comply with local and national safety codes.

For correct and safe operation of the product, it is essential that you follow generally accepted safety procedures in addition to the safety precautions speciﬁed in this manual.

The product is designed to be used by trained personnel only.

Only qualiﬁed personnel who are aware of the hazards involved should remove the cover for repair, maintenance, or adjustment.

Before use, always check the product with a known source to be sure it is operating correctly.

This product is not intended for detection of hazardous voltages.

Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.

While using this product, you may need to access other parts of a larger system. Read the safety sections of the other component manuals for warnings and cautions related to operating the system.

w the following safety precautions to

When incorporating this equipment into a system, the safety of that system is the responsibility of the assembler of the system.

To avoid ﬁre or personal

injury

TBS1000B/-EDU Series Oscilloscope Service Manual iii

Use proper power cord. Use only the power cord speciﬁed for this product and certiﬁed for the country of use.

Do not use the provided power cord for other products.

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, make sure that the product is properly grounded.

Do not disable the power cord grounding connection.

Important safety information

Power disconne

source. See instructions for the location. Do not position the equipment sothatit is difﬁcult to disconnect the power switch; it must remain accessible to theuserat all times to allow for quick disconnection if needed.

Connect and disconnect properly. Do not connect or disconnect probes or test leads while they are connected to a voltage source.

Use only insulated voltage probes, test leads, and adapters supplied with the product, or indicated by Tektronix to be suitable for the product.

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. Do not exceed the Measurement Category (CAT) rating and voltage or current rating of the lowest rated individual component of a product, probe, or accessory. Use caution when using 1:1 test leads because the probe tip voltage is directly transmitted to the product.

Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal.

Do not ﬂoat the common terminal above the rated voltage for that terminal.

Do not operate without covers. Do not operate this product with covers or panels removed, or with the case open. Hazardous voltage exposure is possible.

ct. The power switch disconnects the product from the power

Avoid exposed circuitry. Do not touch exposed connections and components

when power is present.

Do not operate with suspected failures. If you suspect that there is damage to this product, have it inspected by qualiﬁed service personnel.

Disable the product if it is damaged. Do not use the product if it is damaged or operates incorrectly. If in doubt about safety of the product, turn it offand disconnect the power cord. Clearly mark the product to prevent its further operation.

Before use, inspect voltage probes, test leads, and accessories for mechanical damage and replace when damaged. Do not use probes or test leads if they are damaged, if there is exposed metal, or if a wear indicator shows.

Examine the exterior of the product before you use it. Look for cracks or missing pieces.

Use only speciﬁed replacement parts.

Use proper fuse. Use only the fuse type and rating speciﬁed for this product.

Wear eye protection. Wear eye protection if exposure to high-intensity rays or

laser radiation exists.

iv TBS1000B/-EDU Series Oscilloscope Service Manual

Important safety information

Do not operate i

a unit is moved from a cold to a warm environment.

Do not operate in an explosive atmosphere.

Keep product surfaces clean and dry. Remove the input signals before you clean

the product.

Provide proper ventilation. Refer to the installation instructions in the manual for details on installing the product so it has proper ventilation.

Slots and openings are provided for ventilation and should never be coveredor otherwise obstructed. Do not push objects into any of the openings.

Provide a safe working environment. Always place the product in a location convenient for viewing the display and indicators.

Avoid improper or prolonged use of keyboards, pointers, and button pads. Improper or prolonged keyboard or pointer use may result in serious injury.

Be sure your work area meets applicable ergonomic standards. Consult with an ergonomics professional to avoid stress injuries.

n wet/damp conditions. Be aware that condensation may occur if

Probes and test leads

re connecting probes or test leads, connect the power cord from the power

Befo connector to a properly grounded power outlet.

p ﬁngers behind the ﬁnger guards on the probes.

Kee

Remove all probes, test leads and accessories that are not in use.

Use only correct Measurement Category (CAT), voltage, temperature, altitude, and amperage rated probes, test leads, and adapters for any measurement.

Beware of high voltages. Understand the voltage ratings for the probe you are using and do not exceed those ratings. Two ratings are important to know and understand:

The maximum measurement voltage from the probe tip to the probe reference lead.

The maximum ﬂoating voltage from the probe reference lead to earth ground

These two voltage ratings depend on the probe and your application. Refer tothe Speciﬁcations section of the manual for more information.

WAR N ING. To prevent electrical shock, do not exceed the maximum measurement

or maximum ﬂoating voltage for the oscilloscope input BNC connector, probe tip, or probe reference lead.

TBS1000B/-EDU Series Oscilloscope Service Manual v

Important safety information

Connect and dis

product before connecting the probe to the circuit under test. Connect the probe reference lead to the circuit under test before connecting the probe input. Disconnect the probe input and the probe reference lead from the circuit under test before disconnecting the probe from the measurement product.

Connect and

connecting or disconnecting the current probe.

Connect th

Do not connect a current probe to any wire that carries voltages above the current probe vol

Inspect the probe and accessories. Before each use, inspect probe and accessories for damage (cuts, tears, or defects in the probe body, accessories, or cablejacket). Do not use if damaged.

Ground

when using with ground-referenced oscilloscopes. The reference lead mustbe connected to earth potential (0 V).

-referenced oscilloscope use. Do not ﬂoat the reference lead of this probe

connect properly. Connect the probe output to the measurement

disconnect properly. De-energize the circuit under test before

e probe reference lead to earth ground only.

tage rating.

Servicesafetysummary

The Service safety summary section contains additional information required to safely perform service on the product. Only qualiﬁed personnel should perform service procedures. Read this Service safety summary and the General safety summary before performing any service procedures.

To avoid electric shock. Do not touch exposed connections.

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 product power and disconnect the power cord from the mains power before removing any covers or panels, or opening the case for servicing.

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.

Verify safety after repair. Always recheck ground continuity and mains dielectric strength after performing a repair.

vi TBS1000B/-EDU Series Oscilloscope Service Manual

Terms in this manual

These terms may appear in this manual:

WAR N ING. 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

Important safety information

These ter

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

ms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read the mark

WARNING indicates an injury hazard not immediately accessible as you read th

CAUTION indicates a hazard to property including the product.

ing.

emarking.

When this symbol is marked on the product, be sure to consult the manual to ﬁnd out the nature of the potential hazards and any actions which have to be taken to avoid them. (This symbol may also be used to refer the user to ratings in the manual.)

TBS1000B/-EDU Series Oscilloscope Service Manual vii

Important safety information

viii TBS1000B/-EDU Series Oscilloscope Service Manual

Preface

Manual Conventions

This service manual provides information to verify performance of, calibrate, troubleshoot, disassemble, and replace parts on the TBS1000B Series and TBS1000B-ED

Unless noted otherwise, the term "oscilloscope" refers to all models in the TBS1000B se

U Series Digital Storage Oscilloscopes.

ries.

Modules

Replaceable Parts

Safety

Related Documentation

This manu before attempting service.

Throughout this manual, any replaceable component, assembly, or part is referred to by the

A module is composed of electrical and mechanical assemblies, circuit cards, interc

This manual refers to any ﬁeld-replaceable assembly or mechanical part speciﬁcally by its name or generically as a replaceable part. In general, a repl mechanical part, such as the I/O port connectors, that is listed in the replaceable parts list.

Sym at the beginning of this manual.

al uses certain conventions that you should become familiar with

term module.

onnecting cables, and user-accessible controls.

aceable part is any circuit board or assembly, such as the hard disk drive, ora

bolsandtermsrelatedtosafetyappearintheService Safety Summary found

To read about Use these documents

nstallation and

I Operation

Programmer Commands

Product speciﬁcations and performance veriﬁcation procedures

TBS1000B/-EDU Series Oscilloscope Service Manual ix

he oscilloscope user manual, available on the Tektronix Web

T site.Go to www.tektronix.com/manuals and search for the user

manual for your product (available in 11 languages).

The oscilloscope programmer m anual, available on the Tektronix Web site. Go to www.tektronix.com/manuals and search for the

programmer manual for your product.

The oscilloscope speciﬁcations and performance veriﬁcation manual, available on the Tektronix Web site. Go to

www.tektronix.com/manuals and search for the speciﬁcations and performance veriﬁcation technical reference manual for your product.

Preface

x TBS1000B/-EDU Series Oscilloscope Service Manual

Inspection and Cleaning

Inspection and cleaning are done as preventive maintenance. Preventive maintenance, when done regularly, can prevent oscilloscope malfunction and enhance its r

Preventive maintenance consists of visually inspecting and cleaning the oscillosco maintenance depends on the severity of the environment in which you use the oscilloscope. A good time to perform preventive maintenance is just before adjustment of the oscilloscope.

eliability.

pe, and using general care when operating it. How often you do

General Care

Interior Cleaning

For best performance, follow these recommendations:

Protect not waterproof.

Do not s is exposed to direct sunlight or high humidity for long periods of time.

The fr place during normal operation.

To av o sprays, liquids, or solvents.

Use a dry, low-velocity stream of air to clean the interior of the chassis. Use a

t-bristle, non-static-producing brush for cleaning around components. If you

sof must use a liquid for minor interior cleaning, use a 75% isopropyl alcohol solution and rinse with deionized water.

WAR N ING. To avoid injury, power off the instrument and disconnect it from line

voltage before performing any procedure that follows.

the oscilloscope from adverse weather conditions. The oscilloscope is

tore or leave the oscilloscope where the liquid crystal display (LCD)

ont and rear cases help keep dust out of the oscilloscope and must be in

id damage to the oscilloscope or probes, do not expose them to any

TBS1000B/-EDU Series Oscilloscope Service Manual 1

Inspection and Cleaning

Exterior Clean

ing

CAUTION. Avoid the use of chemical cleaning agents, which might damage the

plastics used in this oscilloscope. Use only deionized water when cleaning the menu buttons or front-panel buttons. Use a 75% isopropyl alcohol solution as a cleaner and rinse with deionized water. Before using any other type of cleaner, consult your Tektronix Service Center or representative.

Clean the exterior surfaces of the chassis with a dry lint-free cloth or a soft-bristle brush. If any dirt remains, use a cloth or swab dipped in a 75% isopropyl alcohol solution

. Use a swab to clean narrow spaces around controls and connectors. Do not use abrasive compounds on any part of the chassis that may damage the chassis.

CAUTION. To prevent getting moisture inside the oscilloscope during external

cleaning, use only enough liquid to dampen the cloth or applicator.

Clean the On/Standby switch using a dampened cleaning towel. Do not spray or wet the switch directly.

If the display is very dirty, moisten the wipe with distilled water or a 75% isopropyl alcohol solution and gently rub the display surface. Avoid usingexcess force or you may damage the plastic display surface.

rior Inspection

Exte

Inspect the outside of the oscilloscope for damage, wear, and missing part.(See Table 1.) Immediately repair defects that could cause personal injury or lead to further damage to the oscilloscope.

Table 1: External inspection checklist

Front and rear case

ront-panel knobs

Connectors

Carrying handle, and cabinet feet Correct operation Repair or replace defective module

Accessories

spect for

racks, scratches, deformations, damaged

C hardware

issing, damaged, or loose k nobs

Broken shells, cracked insulation, and deformed contacts. Dirt in connectors

Missing items or parts of items, bent pins, broken or frayed cables, and damaged connectors

pair action

epair or replace defective module

Repair or replace missing or defective knobs

Repair or replace defective modules. Clear or wash out dirt.

Repair or replace damaged or missing items, frayed cables, and defective modules

2 TBS1000B/-EDU Series Oscilloscope Service Manual

Inspection and Cleaning

Interior Inspection

To access the in

side of the oscilloscope for inspection and cleaning, refer to

Diagrams in this manual.

Inspect the in

ternal portions of the oscilloscope for damage and wear. (See

Table 2.) Repair any defects immediately.

If any circu

it board is repaired or replaced, check the table to see if it is necessary

to adjust the oscilloscope. (See Table 2.)

CAUTION. To prevent damage from electrical arcing, make sure that circuit

boards and components are dry before applying power to the oscilloscope.

Table 2: Internal inspection checklist

Item Inspect for Repair action

Circuit boards

ors

Resist

Solder connections Cold solder or rosin joints.

Capacitors Damaged or leaking cases. Corroded

Wiring and cables Loose plugs or connectors. Burned, broken,

Chassis Dents, deformations, and damaged

Loose, broken, or corroded solder connections. Burned circuit boards. Burned, plating.

Burned condition.

solder on leads or terminals.

or frayed wiring.

hard

broken, or cracked circuit-run

, cracked, broken, blistered

ware.

Remove and replace damaged circuit board.

Remove

Resold alcohol.

Remov

Firmly seat connectors. Repair or replace modules with defective wires or cables.

Straighten, repair, or replace defective hard

and replace damaged circuit board.

er joint and clean with isopropyl

e and replace damaged circuit board.

ware.

TBS1000B/-EDU Series Oscilloscope Service Manual 3

Inspection and Cleaning

Cleaning Procedure,

Interior

To clean the o s c

1. Blow off dust with dry, low-pressure, deionized air (approximately 9 psi).

2. Remove any remaining dust with a lint-free cloth dampened in isopropyl

alcohol (75% solution) and then wipe with a lint-free cloth dampened with warm deioni narrow spaces and on circuit boards.

STOP. If, af steps 3, 4, and 5. Proceed with step 6.

3. If steps 1 a

oscilloscope except the Display Module and Front Panel Module may be spray washed using a solution of 75% isopropyl alcohol.

During cleaning of the Acquisition board (Main board), make sure that

no residue is left in the attenuators. Debris or residue can cause several problems with signal ﬁdelity that cannot be corrected by calibration. When handling the board, avoid handling the attenuators since skin oils may cause problems.

Extensive cleaning of the Display Module is difﬁcult because water must

not be trapped between the display shield and the display. The polarizers integ display shield and display must be replaced as an assembly if signiﬁcant moisture or debris become trapped inside. Cotton tipped applicators and lint-free rags moistened in isopropyl alcohol and/or deionized water offer the best cleaning with the least opportunity for damage to the assembly.

illoscope interior, perform the following steps:

zed water. A cotton-tipped applicator is useful for cleaning in

ter performing steps 1 and 2, a module is clean on inspection, skip

nd 2 do not remove all the dust or dirt, all modules in the

rated into the display degrade with long-term exposure to water. The

The Front-Panel module can be damaged by deposition of ﬁlm or debris

inside the knob encoders. To avoid this, be careful not to drip liquid or blow debris into the encoders.

4. Spray wash dirty parts with the 75% isopropyl alcohol solution and wait

60 seconds for the majority of the alcohol to evaporate.

5. Use hot (49 °C to 60 °C / 120 °F to 140 °F) deionized water to thoroughly

rinse the parts.

6. Dry all parts with low-pressure, deionized air.

7. Dry all components and assemblies in an oven or drying compartment using

low-temperature (52 °C to 66 °C / 125 °F to 150 °F) circulating air.

Lubrication. Periodic lubrication is not required for the oscilloscope.

4 TBS1000B/-EDU Series Oscilloscope Service Manual

Adjustment procedures

This section contains adjustment procedures for the TBS1000B and TBS1000B-EDU series oscilloscopes.

Only qualiﬁed personnel should perform service procedures. Read the Service Safety Summary and the General Safety Summary at the beginning of this manual before performing any service procedures. Refer to the user manual for information about using these oscilloscopes.

NOTE. The v

oltage references inside the oscilloscopes are very stable over time and do not require routine updates. Do not perform any procedure in this section unless the oscilloscope does not meet speciﬁcations. Refer to the Performance Ver iﬁcation section to check the oscilloscope performance to speciﬁcations.

The Performance and Veriﬁcation procedures for this product are located in the TBS1000B and TBS1000B-EDU Series Oscilloscopes Speciﬁcations and Performance Veriﬁcation Technical Reference. That manual can be downloaded from the Tektronix Web site (www.tek.com/downloads).

Required equipment

The equipment described in the following table, or a suitable equivalent, is required to complete these procedures. (See Table 3.)

Table 3: Required equipment

Description Minimum requirements s Example

DC Voltage Source -20 V to 20 V, ± 0.1% accuracy

Leveled Sinewave Generator 5 kHz and 200 MHz, ±0.6% amplitude accuracy

50 Ω B NC Cable BNC male to BNC male, ≈ 1 m (36 in) long

50 Ω BNC Cable (seven) BNC male to BNC male, ≈ 25 cm (10 in) long

50 Ω Feedthrough Termination BNC male and female connectors

Dual Banana to B NC Adapter Banana plugs to BNC female

BNC T (three) One male and two female BNC connectors

Wavetek 9100 Universal Calibration System with Oscilloscope Calibration Module (Option 250)

Fluke 5500A Multi-product Calibrator with Oscilloscope Calibration Option (Option 5500A-SC)

Tektronix part number 012-0482-XX

Tektronix part number 012-0208-XX

Tektronix part number 011-0049-XX

Tektronix part number 103-0090-XX

Tektronix part number 103-0030-XX

TBS1000B/-EDU Series Oscilloscope Service Manual 5

Adjustment procedures

Adjustment procedure

The adjustment procedure consists of 70 steps for the 2-channel oscilloscope and 106 steps for the 4-channel model. Each step requires an external voltage source for new calibration constants.

Before performing the adjustment procedure, warm up the oscilloscope for at least ten minutes in an ambient temperature between 20 °C and 30 °C. Adjustments performed before warm up or outside this temperature range may result in poor performan

If all steps in the procedure are completed successfully, a "Pass" message is displaye procedure is aborted and the current calibration is not affected. You can choose to abort the procedure at any step, without affecting the current calibration, by selecting FCAL ABORT.

NOTE. While performing the adjustment procedure, keep in mind that some of the

steps take a signiﬁcant amount of time (up to 5 minutes) to complete.

ce.

d and the new calibration constants take effect. If any step fails, the

Enable the Service menu

Equipment setups are shown in the following ﬁgure. (See Figure 1 on page 7.) Signal requirements for each step are shown in the following table. (See Table 4

ge 9.)

on pa

Before performing the adjustment procedure, enable the Service menu as follows (read through all the steps one time to understand the procedure):

1. Power on the oscilloscope.

2. Push and hold the front-panel Utility button for ﬁve seconds.

3. While continuing to hold the Utility button, push and hold the front-panel Function button for ﬁve seconds.

4. While continuing to hold the Utility and Function buttons, push and hold

the front-panel Measure button for about three seconds, or until a message appears in the lower left corner of the screen showing "Service mode ON."

5. Release all the buttons being pushed.

6. Push the front-panel Utility button.

7. Push the More option button until the menu lists a Service option.

8. Push the Service option button to display the service menu.

At completion of the Adjustment procedure, disable the "Service" menu by selecting the Utility front panel button, the Service option button, and the Service Mode Off option button.

6 TBS1000B/-EDU Series Oscilloscope Service Manual

Adjustment procedures

Figure 1: Adjustment setups

TBS1000B/-EDU Series Oscilloscope Service Manual 7

Adjustment procedures

Adjustment procedure

Use this proced

uretoloadnewcalibrationconstants.

1. Enable the Service menu. (See page 6, Enable the Service menu.)

2. Push the Service option button.

3. Push the Factory Cal option button.

4. Push the War mup Timer option button.

5. Push the Start Timer option button to allow a 10-minute warm up. After

10 minutes, the oscilloscope displays a large black or green cross.

6. Press the front-panel Utility button and push the Service option button.

7. Push the Factory Cal option button.

8. Push the F

CAL INIT option button to initiate the factory calibration routine.

You are now in step 1 of the procedure.

9. As indic

ated by step 1, connect a 0.0 V

source to the channel inputs. (See

Table 4. )

10. Press F

CAL STEP to load the calibration constant for step 1.

11. Follow the screen prompts and the Adjustment setup table for the remainder

routine, applying the proper signal for each step. (See Table 4.)

of the

NOTE. During some steps, the oscilloscope may appear to be idle for several

minutes while it is processing information internally. You must wait for the screen prompt to continue.

If any step in the procedure fails, the procedure terminates. Failure will result if an incorrect signal source is connected. If this happens, you must start the procedure over from the beginning.

If the procedure completes successfully, a "Pass" message is displayed andthe new adjustment takes effect.

12. Compensate the signal path by performing the self-calibration routine.

13. Disconnect all probes and cables from the channel input connectors.

14. Press the Utility button and select Do Self Cal to conﬁrm that you are ready

to proceed.

15. Disable the Service menu option by pushing the Utility front-panel button and the Service and ServiceModeOffoption buttons.

8 TBS1000B/-EDU Series Oscilloscope Service Manual

Adjustment procedures

Table 4: Adjust

Input Setup diagram Step number Signal Signal source setting

Ch 1 through Ch x

Ext Trig

ment steps

DC voltage 1

DC voltage 2

DC Voltage 1

DC Voltage 2

0.0 V

-20.0 V

-2.0 V

-1.6 V

-1.2 V

-0.8 V

-0.4 V

-0.32 V

-0.2 V

-0.16 V

-0.08 V

-0.04

-0.0

015 V

-0.

15 V

0.0

02 V

03 V

.04 V

.08 V

0.16 V

0.2 V

0.32 V

0.4 V

0.8 V

1.2 V

1.6 V

2.0 V

20.0 V

0.0 V

-5.0 V

-1.0 V

1.0 V

5.0 V

TBS1000B/-EDU Series Oscilloscope Service Manual 9

Adjustment procedures

Table 4: Adjustment steps (cont.)

Input Setup diagram Step number Signal Signal source setting

Ch 1

Sinewave generator

Edge 53

Sinewave Generator, 50 Ω

Edge, 50 Ω.

5kHz,1V

1 M Hz, 100 mV

1MHz,1V

50 kHz, 1 V

20 MHz, 1 V

BWL, 25 mV

BWL, 50 mV

BWL, 100 mV

BWL, 250 mV

BWL, 500 mV

BWL, 1 V

5kHz,2.5V

1MHz,2.5V

50 kHz, 2.5 V

20 MHz, 2.5 V

BWL, 2.5 V

BWL, 5 V

BWL, 1.6 V

p-p

1 kHz, 0 to -800 mV

10 TBS1000B/-EDU Series Oscilloscope Service Manual

Adjustment procedures

Table 4: Adjustment steps (cont.)

Input Setup diagram Step number Signal Signal source setting

Ch 2 Sinewave

generator

Ch 3 (4-Ch models

Sinewave generator

only)

Edge 89

Sinewave Generator, 50 Ω

Edge, 50 Ω.

5kHz,1V

1 M Hz, 100 mV

1MHz,1V

50 kHz, 1 V

20 MHz, 1 V

BWL, 25 mV

BWL, 50 mV

BWL, 100 mV

BWL, 250 mV

BWL, 500 mV

BWL, 1 V

5kHz,2.5V

1MHz,2.5V

50 kHz, 2.5 V

20 MHz, 2.5 V

BWL, 2.5 V

BWL, 5 V

5kHz,1V

1 M Hz, 100 mV

1MHz,1V

50 kHz, 1 V

20 MHz, 1 V

BWL, 25 mV

BWL, 50 mV

BWL, 100 mV

BWL, 250 mV

BWL, 500 mV

BWL, 1 V

5kHz,2.5V

1MHz,2.5V

50 kHz, 2.5 V

20 MHz, 2.5 V

BWL, 2.5 V

BWL, 5 V

BWL, 1.6 V

p-p

1 kHz, 0 to -800 mV

TBS1000B/-EDU Series Oscilloscope Service Manual 11

Adjustment procedures

Table 4: Adjustment steps (cont.)

Ch 4 (4-ch models only)

Sinewave generator

100

101

102

103

104

105

106

Sinewave Generator, 50 Ω

5kHz,1V

p-p

1 MHz, 100 mV

1MHz,1V

50 kHz, 1 V

20 MHz, 1 V

BWL, 25 mV

BWL, 50 mV

p-p

BWL, 100 mV

BWL, 250 mV

BWL, 500 mV

BWL, 1 V

5kHz,2.5V

1MHz,2.5V

p-p

50 kHz, 2.5 V

20 MHz, 2.5 V

BWL, 2.5 V

BWL, 5 V

p-p

NOTE. BWL=full bandwidth for the TBS1032B, 1052B, 1072B, 1102B, 1202B,

and the TBS1032B-EDU, 1072B-EDU, 1102B-EDU models. BWL=180 Mhz for the TBS1152B and TBS1052B-EDU models.

12 TBS1000B/-EDU Series Oscilloscope Service Manual

Diagrams

The following image shows module-level replaceable parts for the TBS1000B and TBS1000B-EDU models. Part numbers for these modules are located in the next section.

TBS1000B/-EDU Series Oscilloscope Service Manual 13

Diagrams

14 TBS1000B/-EDU Series Oscilloscope Service Manual

Replaceable Parts

This chapter contains a list of the replaceable modules for the TBS1000 oscilloscopes. Use this list to identify and order replacement parts.

Parts Ordering Information

Replacement parts are available through your local Tektronix ﬁeld ofﬁce or representative.

Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the beneﬁt of the latest improvements. Therefore, when ordering parts, it is important to include the followin

If you order a part that has been replaced with a different or improved part, your local Tektronix ﬁeld ofﬁce or representative will contact you concerning any change in part number.

ginformationinyourorder:

Part number

Instrument type or model number

Instrument serial number

Instrument modiﬁcation number, if applicable

Part Number Revision

Level

Tektronix part numbers contain two digits that show the revision level of the part. For some parts in this manual, you will ﬁnd the letters XX in place of the revision level number.

When you order parts, Tektronix will provide you with the most current part for your product type, serial number, and modiﬁcation (if applicable). At the time of your order, Tektronix will determine the part number revision level neededfor your product, based on the information you provide.

TBS1000B/-EDU Series Oscilloscope Service Manual 15

Replaceable Parts

Module Servicing

Modules can be s

erviced by selecting one of the following two options. Contact

your local Tektronix service center or representative for repair assistance.

Module exchange. In some cases you may exchange your module for a remanufactured module.

These modules cost signiﬁcantly less than new modules and meet the same factory speciﬁcations. For more information about the module exchange program, call 1-800-833-9200 and select option 2.

New modules. You may purchase replacement modules in the same way as other replacement parts.

Using the Replaceable Parts List

This section contains a list of the mechanical and/or electrical components that are replaceable for the oscilloscope. Use this list to identify and order replacement parts. The following table describes each column in the parts list.

Table 5: Replaceable parts list

Column Column name Description

2 Tektronix Part Number Use this part number when ordering

3 and 4

Figure & Index Number Items in this section are referenced by

ﬁgure and index numbers to the exploded view illustrations that follow.

replacement parts from Tektronix.

Serial Number Column three indicates the serial number at

which the part was ﬁrst effective. Column four indicates the serial number at which the part was discontinued. No entries indicates the part is good for all serial numbers.

Qty This indicates the quantity of parts used.

Name & D escription An item name is separated from the

description by a colon (:). Because of space limitations, an item name may sometimes appear as incomplete. U se the U.S. Federal Catalog handbook H6-1 for further item name identiﬁcation.

Abbreviations

Abbreviations conform to American National Standard ANSI Y1.1-1972.

16 TBS1000B/-EDU Series Oscilloscope Service Manual

Parts Lists and Exploded Views

The following tables show the module-level exploded views of the TBS1000B oscilloscopes. Following each exploded view is the list of components, indexed by the numbers in the ﬁgure.

Replaceable Parts

Table 6: Replaceable parts — (LCD, Front panel, and Front case)

Figure and index no.

-1 202-0513-xx 1 Front case

-2 335-3187-xx 1 Tektronix Instrument ID, top bezel label

-3 335-3204-xx 1 Lower bezel label

-4 366-0854-xx 1

-5

-6 366-0852-xx 1

-7

-8 348-2085-xx 2

Tektronix part no. Qty. Name and description

Knob (large), Multipurpose

366-0850-xx 1

335-3215-xx 1

Knob (small), Position

Knob (medium), Scale

English, front panel overlay (see the product datasheet)

Foot; front,Santoprene,black,55 Derometer,textured

TBS1000B/-EDU Series Oscilloscope Service Manual 17

Replaceable Parts

Table 6: Replaceable parts — (LCD, Front panel, and Front case) (cont.)

Figure and index no.

-9 260-2980-xx 1

-10 878-0910-xx 1 Front panel board

-11 211-1272-xx 3 Front panel board mounting screw

-12 131-6417-xx 1

-13 211-114 3-x x 6

-14 343-1673-xx 1

-15 441-2749-xx 1

-16 174-6316-xx 1

-17 850-0237-xx 1 Display assembly

Tektronix part no. Qty. Name and description

Key pad, polymer, front panel

Ground clip

Chassis screw, self-threading

Cable clamp

Chassis

LCD to main board cable assembly

Table 7: Replaceable parts — (Power supply, Main board, Rear case)

Figure and index no.

1 119-7609-xx 1

-2 366-0856-xx 1 Power switch push button cap

-3 211–1272–xx 3 Machine screws; 6 - 32 x 0.250, panhead

Tektronix part no. Qty. Name and description

AC-DC power supply

18 TBS1000B/-EDU Series Oscilloscope Service Manual

Table 7: Replaceable parts — (Power supply, Main board, Rear case) (cont.)

Replaceable Parts

Figure and index no.

-4 211–1275–xx 2 Threadlocking screws; power supply adapter; 6 - 32 x 0.312, panhead

-5

-6 200-5105-xx 2

-7

-8 348-2086-xx 2

-9 348-1703-xx 2

-10 870-0913-xx 1 Main board

-11 174-465

-12 210-1039-xx 3

-13 220-0265-xx 3

Tektronix part no. Qty. Name and description

8-xx

1 Rear case

1 Front pa

Rubber ESD c

Machine screws; 6 - 32 x 0.250, panhead

Foot; rear,Santoprene,black, ,55 Derometer

Flip-up feet

BNC lock

overs

nel cable assembly

ing washer

ing nuts

202-0438-x

211–1272–xx

TBS1000B/-EDU Series Oscilloscope Service Manual 19

Tektronix TBS1052B, TBS1052B EDU, TBS1072B, TBS1072B EDU, TBS1102B Service

Specifications and Main Features

Frequently Asked Questions

User Manual