x
TDS3000C Series
Digital Phosphor Oscilloscopes
Service Manual
*P071250702*
071-2507-02
Service Manual
TDS3000C Series
Digital Phosphor Oscilloscopes
071-2507-02
Issued: January 2010
REPRODUCTION AND DISTRIBUTION OF
THIS TECHNICAL MANUAL IS
AUTHORIZED FOR UNITED STATES OF
AMERICA GOVERNMENT PURPOSES.
This document supports firmware version 4.00
and above for TDS3000C Series instruments only.
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.
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 supercede s
that in all previously published material . Specifications and price c hange privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
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:
H In North America, call 1-800-833-9200.
H Worldwide, visit www.tektronix.com to find contacts in your area.
Warranty 16
Tektronix warrants that the product will be free from defects in materials and workmanship for a period of three
(3) years from the date of original purchase from an authorized Tektronix distributor. If the product proves
defective during this warranty period, Tektronix, at its option, either will repair the defective product without
charge for parts and labor, or will provide a replacement in exchange for the defective product. Batteries are
excluded from this warranty. Parts, modules and replacement products used by Tektronix for warranty work may
be new or reconditioned to like new performance. All replaced parts, modules and products become the property
of Tektronix.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expira tion
of the warranty period and make suitable arrangements for the performance of service. Customer shall be
responsible for packaging and shipping the defective product to the service center designated by Tektronix,
shipping charges prepaid, and with a copy of customer proof of purchase. Tektronix shall pay for the return of the
product to Customer if the shipment is t o a location within the count ry in which the Tektronix service center is
located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for
products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obliga ted to furnish service under this warranty a) to repair damage
resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product;
b) to repair damage resulting from improper use or connection to incompatible e quipment; c) to repair any
damage or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been
modified or integrated with other products when the effect of such modification or integration increases the time
or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY
OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A P ARTICULAR PURPOSE.
TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND
EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY.
TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS
ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.
Table of Contents
Operating Information
Theory of Operation
General Safety Summary v...................................
Service Safety Summary ix....................................
Preface xi...................................................
Operating Information 1--1............................................
Connecting Power 1--2................................................
Installing an Application Module 1--7....................................
Installing a Communication Module 1--8.................................
Front-Panel Menus and Controls 1--9....................................
Front-Panel Connectors 1--18...........................................
Rear-Panel Connectors 1--19............................................
Communication Module Connectors 1--20.................................
Probe Compensation 1--21..............................................
Self Calibration 1--22..................................................
Transporting the Oscilloscope 1--23......................................
Power Supply 2--1...................................................
Battery Board 2--2...................................................
Main Board 2--2.....................................................
Display Module 2--3.................................................
Front-Panel Board 2--3................................................
USB Port 2--3.......................................................
Adjustment Procedures
Required Equipment 3--1..............................................
Overview of the Adjustment Process 3--2.................................
Signal Connections 3--3...............................................
Factory Adjustment Procedure 3--6......................................
Maintenance
Preparation 4--1.....................................................
Preventing ESD 4--1.................................................
Inspection and Cleaning 4--2...........................................
Removal and Installation Procedures 4--5.................................
Troubleshooting 4--35.................................................
Troubleshooting Procedure 4--36.........................................
Unpacking and Repacking Instructions 4--39...............................
Options
Options 5--1........................................................
TDS3000C Series Service Manual
i
Table of Contents
Replaceable Parts List
Replaceable Parts List 6--1............................................
Parts Ordering Information 6--1.........................................
Using the Replaceable Parts List 6--3....................................
ii
TDS3000C Series Service Manual
List of Figures
Table of Contents
Figure 2--1: TDS3000C series block diagram 2--1...................
Figure 4--1: Pulling the hub pin 4--9..............................
Figure 4--2: Releasing the hub assembly 4--10.......................
Figure 4--3: Reinstalling a hub cover 4--12..........................
Figure 4--4: Communication module guide 4--13.....................
Figure 4--5: Rear chassis cables to the main board 4--15..............
Figure 4--6: Installing the fan, line filter, and line power cable 4--17.....
Figure 4--7: Installing the AC line filter and shield 4--18..............
Figure 4--8: Installing the line filter and line power cable 4--19.........
Figure 4--9: Main Board 4--22....................................
Figure 4--10: Install the J500 connector clip 4--24....................
Figure 4--11: Taping trigger cable (four-channel models only) and
display cable 4--25...........................................
Figure 4--12: Front chassis 4--26..................................
Figure 4--13: Display module 4--27................................
Figure 4--14: Front-panel cable routing 4--28........................
Figure 4--15: Front-panel USB port removal 4--29...................
Figure 4--16: Remove front-panel knobs 4--30.......................
Figure 4--17: Remove front-panel board 4--31.......................
Figure 4--18: Remove front-panel keypads 4--32.....................
Figure 4--19: Checking front-panel lock nuts 4--33...................
Figure 4--20: Primary troubleshooting procedure 4--36...............
Figure 4--21: AC power supply troubleshooting procedure 4--37........
Figure 4--22: Module isolation troubleshooting procedure 4--38........
Figure 6--1: Exploded view, front case half 6--4.....................
Figure 6--2: Exploded view, LCD display 6--6......................
Figure 6--3: Exploded view, main board 6--8.......................
Figure 6--4: Exploded view, circuit board assembly and fan 6--10.......
Figure 6--5: Exploded view, rear case half 6--12......................
TDS3000C Series Service Manual
iii
Table of Contents
List of Tables
T able 4--1: Internal inspection check list 4--3......................
Table 4--2: Removal and installation procedures 4--6................
Table 5--1: TDS3000C Series options 5--1.........................
iv
TDS3000C Series Service Manual
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.
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. Connect the probe output to the measurement
instrument before connecting the probe to the circuit under test. Disconnect the
probe input and the probe ground from the circuit under test before disconnecting
the probe from the measurement instrument.
Ground the Product. When operating with AC power, 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.
When operating with battery power, this product must still be grounded. To
prevent electric shock, always connect a grounding wire between the ground
terminal on the rear panel and earth ground.
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 ground lead of the probe to earth ground only.
TDS3000C Series Service Manual
v
General Safety Summary
Replace Batteries Properly. Replace batteries only with the proper type and rating
specified.
Recharge Batteries Properly. Recharge batteries for the recommended charge
cycle only.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
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.
Safety Terms and Symbols
Terms in this 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.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
vi
TDS3000C Series Service Manual
General Safety Summary
Symbols on the Product. These symbols may appear on the product:
WARNING
High Voltage
Ethernet Port Chassis Ground
Preventing Electrostatic Damage
CAUTION. Electrostatic discharge (ESD) can damage components in the
oscilloscope and its accessories. To prevent ESD, observe these precautions
when directed to do so.
Use a Ground Strap. Wear a grounded antistatic wrist strap to discharge the static
voltage from your body while installing or removing sensitive components.
Use a Safe Work Area. Do not use any devices capable of generating or holding a
static charge in the work area where you install or remove sensitive components.
Avoid handling sensitive components in areas that have a floor or benchtop
surface capable of generating a static charge.
Handle Components Carefully. Do not slide sensitive components over any
surface. Do not touch exposed connector pins. Handle sensitive components as
little as possible.
Protective Ground
(Earth) Terminal
CAUTION
Refer to Manual
Battery
Information
Transport and Store Carefully. Transport and store sensitive components in a
static-protected bag or container.
TDS3000C Series Service Manual
vii
General Safety Summary
viii
TDS3000C Series Service Manual
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.
TDS3000C Series Service Manual
ix
Service Safety Summary
x
TDS3000C Series Service Manual
Preface
This Service manual provides information to troubleshoot, disassemble, and
repair the following TDS3000C Series Digital Phosphor Oscilloscopes instrument to the module level:
H TDS3012C
H TDS3014C
H TDS3032C
H TDS3034C
H TDS3052C
H TDS3054C
TDS3000C Series Service Manual
xi
Preface
xii
TDS3000C Series Service Manual
Operating Information
Operating Information
This chapter provides an overview of the following topics:
H Connecting power and using the battery pack
H Installing an application module
H Installing a communication module
H Front-panel menus and controls
H Front- and rear-panel connectors
H Probe compensation
H Self calibration
H Transporting the oscilloscope
For details about operating information, see the TDS3000C Series Digital
Phosphor Oscilloscope User Manual.
For information about unpacking and inspecting the instrument, see Unpacking
and Repacking Instructions on page 4--39 of this manual.
TDS3000C Series Service Manual
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Operating Information
Connecting Power
To connect power to the instrument, connect the power cord to the power input
connector on the rear panel.
You can operate the oscilloscope from a grounded mains supply with line voltage
between 90 V
oscilloscope is grounded through the power cord. The line fuse is internal and is
not user replaceable.
and 250 VACand frequency between 47 Hz and 440 Hz. The
AC
Using Battery Power
You can operate the oscilloscope continuously for up to three hours from the
TDS3BATC rechargeable battery pack. A triangle icon in the display (
when the battery is in use, a power-plug icon (
connected, and a gauge icon (
The oscilloscope turns off automatically when the battery runs low.
CAUTION. This product uses Lithium-Ion rechargeable batteries. Lithium-Ion
rechargeable batteries require routine maintenance and care in their use,
handling, and disposal. Refer to the TDS3BATC Rechargeable Battery Pack
Instructions, 071-0900-xx, to safely use Lithium-Ion batteries and achieve the
maximum battery life span. These instructions are available on the Tektronix
Web site, at www.tektronix.com/manuals.
) shows the relative charge level in the battery.
) shows when line power is
) shows
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TDS3000C Series Service Manual
Operating Safely with
Battery Power
Operating Information
WARNING. To avoid electric shock, always connect the rear-panel ground
terminal to earth ground when operating the instrument from battery power.
For safe operation, the oscilloscope chassis must remain at earth ground potential
even when operating from battery power. Without a connection between the
chassis and earth ground, you can receive a shock from exposed metal on the
chassis if you connect an input to a hazardous voltage (>30 V
, >42 Vpk). To
RMS
protect against this condition, attach the Tektronix-supplied grounding wire from
the terminal on the rear panel to earth ground. If you use a different grounding
wire, it must be larger than 18 gauge (1 mm2).
When you start to use the battery pack, an on-screen message reminds you to
connect the grounding wire between the ground terminal on the rear panel and
earth ground.
If you choose not to attach the grounding wire, you are not protected against
electric shock if you connect the oscilloscope to a hazardous voltage. You can
still use the oscilloscope if you do not connect a signal greater than 30 V
RMS
(42 Vpk) to the probe tip, the BNC connector center, or the common lead. Ensure
that all probe common leads are connected to the same voltage.
WARNING. Hazardous voltages may exist in unexpected places due to faulty
circuitry in the device under test.
CAUTION. When operating the oscilloscope on battery power do not connect a
grounded device, such as a printer or computer, to the oscilloscope unless the
grounding wire of the oscilloscope is connected to the earth ground.
TDS3000C Series Service Manual
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Operating Information
Installing and Removing
the Battery
To install the optional battery pack, do these steps:
1. Open the battery compartment door on the rear panel and remove the
accessory tray.
Battery door
2. Slide the battery into the compartment and press it in from both sides until
you hear the latches click.
3. Press on both sides of the battery compartment door to snap it closed.
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TDS3000C Series Service Manual
Operating Information
To remove the battery, do these steps:
1. Open the battery compartment door.
2. Lift the battery handles and pull the battery out of the oscilloscope.
TDS3000C Series Service Manual
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Operating Information
Charging the Battery
The battery charges automatically when the oscilloscope is connected to line
power. You can also charge the battery with the optional external charger
(TDS3CHG).
Configuration Typical charging time
Battery charging in oscilloscope with oscilloscope turned on or off
Battery charging with TDS3CHG external
charger
32 hours
6 hours
NOTE. Charge the battery before using it for the first time or after prolonged
storage.
Refer to the TDS3BATC Rechargeable Battery Pack Instructions (Tektronix part
number 071-0900-xx) for information on battery storage and disposal, and for
Battery Maintenance Guidelines. These instructions are available on the
Tektronix Web site, at www.tektronix.com/manuals.
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TDS3000C Series Service Manual
Installing an Application Module
CAUTION. To avoid damage to the oscilloscope or application module, observe
the ESD precautions described on page vii.
Optional application packages are available to extend the capability of your
oscilloscope. You can install up to four application modules at one time.
Application modules can go into the two slots with windows in the upper right
corner of the front panel. Two additional slots are directly behind the two you
can see.
Operating Information
Application
modules
Contacts
Refer to the TDS3000, TDS3000B, and TDS3000C Series Application Module
Installation manual that came with your application module for instructions on
installing and testing an application module.
NOTE. If you remove an application module, the functions provided by the
application module become unavailable. You can reinstall the module to restore
the functions.
TDS3000C Series Service Manual
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Operating Information
Installing a Communication Module
CAUTION. To avoid damage to the oscilloscope or communication module,
observe the ESD precautions described on page vii.
To install the optional communication module, do these steps:
1. Turn the oscilloscope power off.
2. Press down on the latching tab to remove the blank cover.
3. Slide the communication module into the compartment until the internal
connectors are seated and the latching tab locks.
4. Turn power on. The communication module is now ready for your use.
To remove a communication module, do these steps:
1. Turn the oscilloscope power off.
2. Press down on the latching tab and then use a small screwdriver to alternate-
ly pry out the sides of the communication module.
3. Slide out the communication module and store it in an ESD-shielded bag.
Install the blank cover if no other communication module is to be installed.
Latching tab
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TDS3000C Series Service Manual
Front-Panel Menus and Controls
The front panel has buttons and controls for the functions you use most often.
The front panel has menus to access more specialized functions.
Operating Information
Using the Menu System
To use the menu system, follow the steps shown on the next two pages.
1. Push a front-panel menu button to display the menu you want to use.
2. Push a bottom screen button to select a menu item. If a pop-up menu
TDS3000C Series Service Manual
appears, continue to push the screen button to select an item from the pop-up
menu.
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Operating Information
3. Push a side screen button to choose a menu item. If the menu item contains
more than one choice, push the side screen button again to make the choice.
4. Certain menu choices require you to set a numerical value to complete the
setup. Use the general purpose knob to adjust the parameter value. Push the
Coarse button to make larger adjustments.
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TDS3000C Series Service Manual
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