Tektronix TDS6804B, TDS6604B, TDS6154C, TDS6124C Service
Service Manual
TDS6000B & TDS6000C Series
Digital Storage Oscilloscope
071-1798-00
This document applies to firmware version 4.00
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
Copyright © Tektronix, Inc. 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 supercedes
that in all previously published material. Specifica tions and price change 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 techni cal support:
H In North America, call 1-800-833-9200.
H Worldwide, visit www.tektronix.com to find contacts in your area.
Warranty 2
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1)
year from the date of shipment. If any such 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. 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 t he defect before the expiration
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, with
shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a
location within the country in which the Tektronix service center is locat ed. Customer shall be responsible for
paying all shipping charges, duties, taxes, and any other charges for produc ts 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 obligated 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 equipment; 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
Figures iii...................................................
Tables iv...................................................
General Safety Summary v...................................
Service Safety Summary vii....................................
Environmental Considerations ix...............................
Preface xi...................................................
Manual Conventions xi..............................................
Installation and Operating Information 1--1...............................
Module Overviews 2--1...............................................
General 2--1....................................................
Input Signal Path 2--1.............................................
Display Panel 2--1................................................
Front Panel 2--2..................................................
Rear Panel 2--2..................................................
Low Voltage Power Supply 2--2.....................................
Fans 2--3.......................................................
Block diagram 2--3..................................................
Adjustment Procedure
Maintenance
Preventing ESD 4--1.................................................
Inspection and Cleaning 4--2...........................................
General Care 4--2................................................
Flat Panel Display Cleaning 4--2....................................
Interior Cleaning 4--3.............................................
Exterior Cleaning 4--3............................................
Inspection 4--3..................................................
Removal and Installation Procedures 4--7.........................
Preparation 4--7.....................................................
Trim, Cabinet, and Module Removal 4--9.................................
TDS6000B & TDS6000C Series Service Manual
i
Table of Contents
Removal Procedures 4--13..............................................
Acquisition Module 4--13...........................................
MicroATX Module 4--13...........................................
Bridge Module 4--14...............................................
PowerPC (PPC) Module 4--14.......................................
CD--ROM Drive 4--15.............................................
Display 4--15.....................................................
Side Fans 4--15...................................................
Internal Fans 4--15................................................
Front Panel 4--16..................................................
USB Module 4--16................................................
Hard Disk Drive 4--16.............................................
Troubleshooting 4--17...........................................
Service Level 4--17...................................................
Check for Common Problems 4--17......................................
Equipment Required 4--19..............................................
Fault Isolation Procedure 4--19..........................................
Checking the Power Supply Voltages 4--21.............................
If the Oscilloscope Will Not Boot 4--24................................
Booting Into Windows 4--24.........................................
If the Oscilloscope Application Does Not Work 4--24....................
PPC and MicroATX PC Diagnostics 4--25.................................
Power--on diagnostics 4--25.........................................
Checkit Utilities 4--27..............................................
Diagnostics 4--28.................................................
Software Updates 4--28................................................
After Repair 4--29....................................................
BIOS Error Messages 4--29.............................................
BIOS Beep Codes 4--31................................................
DIP Switch Controls 4 --31..............................................
Diagnostic LED 4--32.................................................
Troubleshooting Using Reset Circuits 4--34................................
Update/Restore the MicroATX Board CMOS 4--36..........................
Installing an Authorization Key 4--37.....................................
Repackaging Instructions 4--39...................................
Packaging 4--39......................................................
Shipping to the Service Center 4--39......................................
Mechanical Parts List
ii
Parts Ordering Information 5--1.........................................
Module Servicing 5--1............................................
Using the Replaceable Parts List 5--2....................................
Abbreviations 5--2...............................................
Mfr. Code to Manufacturer Cross Index 5--2...........................
TDS6000B & TDS6000C Series Service Manual
List of Figures
Table of Contents
Figure 2--1: TDS6000B and TDS6000C series block diagram 2--3......
Figure 4--1: Locator for trim and cabinet removal 4--11...............
Figure 4--2: Locator for internal modules 4--12......................
Figure 4--3: Primary troubleshooting tree 4--20......................
Figure 4--4: Low voltage power supply LED locations 4--21...........
Figure 4--5: Location of power--on and overcurrent LEDs 4--22........
Figure 4--6: Connectors J1, J2, and J3 4--23........................
Figure 4--7: The three PCI busses 4--34............................
Figure 4--8: PCI and MicroATX video connectors 4--35...............
Figure 4--9: Switch, jumper, and reset button locations 4--36...........
Figure 5--1: External parts 5--7..................................
Figure 5--2: Front panel and drives 5--10...........................
Figure 5--3: Front panel and drives (cont.) 5--12.....................
Figure 5--4: Power supply 5 --14...................................
Figure 5--5: ATX module detail 5--16..............................
Figure 5--6: Accessories 5--17.....................................
TDS6000B & TDS6000C Series Service Manual
iii
Table of Contents
List of Tables
T able 4--1: External inspection check list 4--3......................
Table 4--2: Tools required for module removal 4--8.................
Table 4--3: Column legend for Table 4--5 4--9......................
Table 4--4: Accessing modules 4--9...............................
Table 4--5: Failure symptoms and possible causes 4--17...............
Table 4--6: LVPS LED descriptions 4--21...........................
Table 4--7: Power supply voltages 4--23............................
Table 4--8: Power--on diagnostic tests 4--25.........................
Table 4--9: Action required for module replacement 4--29.............
Table 4--10: BIOS error messages 4--30............................
T able 4--11: Beep codes 4--31.....................................
Table 4--12: DIP switch functions 4--32.............................
Table 4--13: Diagnostic LED 4--33.................................
iv
TDS6000B & TDS6000C 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.
Only qualified personnel should perform service procedures.
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.
ToAvoidFireor
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.
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.
Power Disconnect. The power cord disconnects the product from the power
source. Do not block the power cord; it must remain 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 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.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
TDS6000B & TDS6000C Series Service Manual
v
General Safety Summary
Wear Eye Protection. Wear eye protection if exposure to high-intensity rays or
laser radiation exists.
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.
Terms in this Manual
Symbols and Terms
on the Product
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:
H DANGER indicates an injury hazard immediately accessible as you read the
marking.
H WARNING indicates an injury hazard not immediately accessible as you
read the marking.
H CAUTION indicates a hazard to property including the product.
The following symbols may appear on the product:
CAUTION
Refer to Manual
WARNING
High Voltage
vi
Protective Ground
(Earth) Terminal
TDS6000B & TDS6000C Series Service Manual
Earth Terminal
Standby
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.
TDS6000B & TDS6000C Series Service Manual
vii
Service Safety Summary
viii
TDS6000B & TDS6000C Series Service Manual
Environmental Considerations
This section provides information about the environmental impact of the
product.
Product End-of-Life
Handling
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.
Restriction of Hazardous
Substances
TDS6000B & TDS6000C Series Service Manual
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.
ix
Environmental Considerations
x
TDS6000B & TDS6000C Series Service Manual
Preface
Manual Conventions
This is the service manual for the TDS6000B & TDS6000C Digital Storage
Oscilloscope products. Read this preface to learn how this manual is structured,
what conventions it uses, and where you can find other information related to
servicing this product. Read the safety summaries preceding this preface for
safety and other important background information needed before using this
manual to service this product.
This manual uses certain conventions that you should become familiar with
before attempting service.
Replaceable Parts
Safety
This manual refers to any field-replaceable assembly or mechanical part
specifically by its name or generically as a replaceable part or module. In
general, a replaceable part is any circuit board or assembly, such as the hard disk
drive, or a mechanical part, such as the I/O port connectors, that is listed in the
replaceable parts list.
Symbols and terms related to safety appear in the Service Safety Summary found
at the beginning of this manual.
TDS6000B & TDS6000C Series Service Manual
xi
Preface
xii
TDS6000B & TDS6000C Series Service Manual
Operating Information
Operating Information
For information on installing and operating your TDS6000B or TDS6000C
Series Digital Storage Oscilloscope, refer to the TDS6000B & TDS6000C Series
Digital Storage Oscilloscopes Quick Start User Manual. This manual is
available on the Web at www.tektronix.com.
TDS6000B & TDS6000C Series Service Manual
1- 1
Operating Information
1- 2
TDS6000B & TDS6000C Series Service Manual
Theory of Operation
Theory of Operation
This section describes the electrical operation of the oscilloscope. Figure 2--1 on
page 2--3 shows the module interconnections.
Module Overviews
Module overviews describe the basic operation of each functional circuit block
asshowninFigure2--1onpage2--3.
General
Input Signal Path
A dual-processor system controls the oscilloscope. The oscilloscope features an
XGA resolution flat-panel display, a transparent touch screen, and a front-panel
with direct access to commonly used oscilloscope functions. You can also use
the oscilloscope with a mouse pointing device or keyboard.
A signal enters the oscilloscope through a direct coaxial connection to the input
connector, or a probe connected to the front panel.
Acquisition Board. The acquisition board conditions the input signals, samples
them, converts them to digital signals, and controls the acquisition process under
direction of the processor system. The acquisition system includes the multisource trigger, acquisition timebase, and acquisition mode generation and control
circuitry. The acquisition board is located in the bottom compartment of the
oscilloscope. Four vertical channels are accommodated. All channels feature a
TekConnectr interface for additional front-end signal conditioning functions.
Processor System. The processor system contains two processor boards with
microprocessors that control the entire oscilloscope.
Display Panel
TDS6000B & TDS6000C Series Service Manual
Waveforms and menus are displayed on a 10.4 inch, color, active-matrix LCD
display with touch panel.
Display System. Text and waveforms are processed by different parts of the
display circuitry. The display system (display adapter board and inverter board)
sends the text and waveform information to the display panel.
Touch Panel. The display board sends information from the touch panel to the
processor. Any changes in settings are reported to the processor system.
2- 1
Theory of Operation
Front Panel
The MicroATX board reads the front-panel switches and encoders. Any changes
in their settings are reported to the processor system. The MicroATX board also
turns the LEDs on and off.
Menu Switches. Front-panel menu switches are also read by the MicroATX board.
The touch screen processor sends any changes in menu selections to the
MicroATX processor system. The ON/STBY switch passes through the display
adapter board to the MicroATX board. The MicroATX board creates the signal
sent to the power supply to toggle power.
PowerPC Board. The PowerPC (PPC) board provides fast access to the Acquisition board and the display system. The MicroATX board reads the front-panel
switches and encoders and implements any changes requested by their settings.
The PPC board provides a GPIB interface through a rear panel connector.
MicroATX Board. The MicroATX board provides standard Windows functionality
and I/O port interfaces to the rear panel.
Micro ATX Bridge Board. Both processor systems, CDROM-RW drive, and hard
disk drive are connected together by, and communicate through, the bridge
board.
Rear Panel
Low Voltage Power Supply
The hard disk drive and CDROM-drive provide access to stored waveform data
and software to customize your oscilloscope with your measurement needs. The
GPIB allows for external control of the oscilloscope.
You can make hardcopies via the USB and parallel ports.
The MicroATX board has four USB ports and one serial port on the rear panel.
The MicroATX board also provides a front panel USB port. The MicroATX has
one serial port, which is routed to the rear panel. A microphone input and
earphone output exist on the MicroATX rear panel. Ethernet connector is RJ-45.
Keyboard and mouse are both PS/2.
The low voltage power supply is a switching power converter with active power
factor control. It supplies power to all of the circuitry in the oscilloscope.
The ON/STBY switch, located on the front panel, also controls all of the power
to the oscilloscope except for part of the circuitry in the standby power supply.
The power supply sends a power fail (~PF) warning to the processor and
acquisition systems if the power is going down.
Power is distributed throughout the oscilloscope through the front and rear power
distribution bus boards.
2- 2
TDS6000B & TDS6000C Series Service Manual
Theory of Operation
Block Diagram
Touch
panel
ON/STANDBY
Display
panel
Fans
Display
adapter
board
Two fan assemblies (six on the Side Fan Assembly and four on the Internal Fan
Assembly) provide forced air cooling for the oscilloscope. The fans are
controlled by the PPC.
This section contains the block diagram of the TDS6000B and TDS6000C
Digital Storage Oscilloscopes and modules, showing the major circuit blocks or
modules. The block diagram is shown in Figure 2--1, below.
SVGA
USB
Sound
Serial
Parallel
Ethernet
Mouse
Keyboard
GPIB
SCOPE
XGA OUT
Inverter
board
Front panel
Side fans
Internal fans
Bridge
MicroATX board
board
Power PC Processor board
Processor
CD ROM
Hard drive
LVPS board
AUX bus PA bus
Ch1
Ch2
Ch3
Ch4
AUX TRIG OUT
DC PROBE CAL
RECOVERED DATA
RECOVERED CLOCK
FAST EDGE
Figure 2- 1: TDS6000B and TDS6000C series block diagram
Power
bus
(front)
Power
bus
(rear)
REF
AUX IN
AUX IN
Acquisition
board
TDS6000B & TDS6000C Series Service Manual
2- 3
Theory of Operation
2- 4
TDS6000B & TDS6000C Series Service Manual
Adjustment Procedures
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