xx
MDO3000 Series
ZZZ
Mixed Domain Oscilloscopes
Service Manual
*P077098101*
077-0981-01
xx
MDO3000 Series
ZZZ
Mixed Domain Oscilloscopes
Service Manual
Revision A
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
077-0981-01
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 c overed by U.S. and foreign patents, issued and pending. Information in this publication
supersedes that in all previously published material. Specifications and pric e change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O . Box 5 0 0
Beaverto
USA
For product information, sales, service, and technical support:
n, OR 97077
In North America, call 1-800-833-9200.
Worldwide, visit www.tek.com to find contacts in your area.
Table of Contents
Important Safety Information .................................................................................... iv
General Safety Summary ........ .................................. ................................ .......... iv
Service Safety Summary .................................................................................... vii
Terms in T h i
Symbols and Terms on the Product ............................... .................................. ....... viii
Preface.............................................................................................................. ix
Manual Conventions.................. ................................ ................................ ........ ix
Theory of Operation... ................................ ................................ ............................. 1
Power Supply................................................................................................... 1
I/O Boar
Main Board, Mezzanine Board, and Analog Board........................................................ 1
Front-Panel Board .... ................................ ................................ ......................... 2
Adjustments ......................................................................................................... 5
Maintenance......................................................................................................... 7
Preventing ESD ................................................................................................ 7
ection and Cleaning...................................... ................................ ................. 7
Insp
Module Removal.................................. ................................ ............................ 11
Troubleshooting............. ................................ ................................ .................. 13
Troubleshooting Procedure .............................. ................................ .................... 13
Unpacking and Repacking Instructions ............ ................................ ........................ 17
Replaceable Parts List............................................. ................................ ................ 19
rts Ordering Information .................................................................................. 19
Pa
Using the Replaceable Parts List............................................................................ 21
s Manual ....................................................................................... viii
d ....................................................................................................... 1
MDO3000 Series Mixed Domain Oscilloscopes Service Manual i
Table of Contents
List of Figure
Figure 1: MDO3000 Series block diagram...................................................................... 3
Figure 2: Re
Figure 3: Module locator ........................... ................................ .............................. 12
Figure 4: Primary troubleshooting procedure .................................................................. 14
Figure 5: AC power supply troubleshooting procedure....................................................... 15
Figure 6: Module isolation troubleshooting procedure........................................................ 16
Figure 7: Exploded view, front panel assembly ................................................................ 24
Figure 8:
Figure 9: Rear chassis and connecting modules ............................................................... 28
moving tabs from the front protective cover..................................................... 11
Display, analog board, and main board assembly .................... .............................. 26
s
ii MDO3000 Series Mixed Domain Oscilloscopes Service Manual
List of Tables
Table 1: External inspection checklist....................... .................................. ................... 9
Table 2: Int
Table 3: Parts list column descriptions.............. ................................ ............................ 21
Table 4: Front panel assembly ......... ................................ ................................ .......... 22
Table 5: Display, analog board, and main board ..................... ................................ .......... 25
Table 6: Rear chassis and connecting modules ...................... ................................ .......... 27
ernal inspection checklist ................. .................................. ........................ 10
Table of Contents
MDO3000 Series Mixed Domain Oscilloscopes Service Manual iii
Important Safety Information
Important Saf
ety Information
This manual c
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 vii, Service Safety Summary.)
General Safety Summary
Use the product only as specified. Review the following safety precautions to
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 pro
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.
ontains information and warnings that must be followed by the user
duct, it is essential that you follow
To avoid fire or personal
injury
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.
When incorporating this equipment into a system, the safety of that system is the
responsibility of the assembler of the system.
Use proper power cord. Use only the power cord s pecified 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 prope
Do not disable the power cord grounding connection.
rly grounded.
iv MDO3000 Series Mixed Domain Oscilloscopes Service Manual
Important Safety Information
Power disconne
source. See instructions for the location. Do not position the equipment so that
it is difficult to operate the power cord; it must remain accessible to the user at
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 a v o i d fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information b efore 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 cord 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 off and
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.
Useonlyspecified replacement parts.
Use proper fuse. Use only the fuse type and rating specified for this product.
Do not operate in wet/damp conditions. Be aware that condensation may occur if
a unit is moved from a cold to a warm environment.
MDO3000 Series Mixed Domain Oscilloscopes Service Manual v
Important Safety Information
Probes and test leads
Do not operate i
Keep product surfaces clean and dry. Remove the input signals before you clean
the p roduct.
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 covered or
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.
Use only the Tektronix rackmount hardware specified for this product.
Before connecting p robes or test leads, connect the power cord from the power
connector to a properly grounded power outlet.
n an explosive atmosphere.
Keep fingers behind the finger guards on the probes.
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 appl
Specifications section of the manual for more information.
WARNING. To prevent electrical shock, do not exc eed the maximum measurement
or maximum floating voltage for the oscilloscope input BNC connector, probe
tip, or probe reference lead.
Connect and disconnect properly. Connect the probe output to the measurement
product before connecting the probe to the circuit under test. Connect the
ication. Refer to the
vi MDO3000 Series Mixed Domain Oscilloscopes Service Manual
Important Safety Information
probe referenc
Disconnect the probe input and the probe reference lead from the circuit under test
before disconnecting the probe from the measurement product.
Connect and disconnect properly. De-energize the circuit under test before
connecting or disconnecting the current probe.
Connect the p robe reference lead to earth ground only.
Do not connect a current probe to any wire that carries voltages above the current
probe voltage rating.
Inspect t
accessories for damage (cuts, tears, or defects in the probe body, accessories, or
cable jacket). Do not use if damaged.
Ground-referenced oscilloscope use. Do not float the reference lead of this probe
when using with ground-referenced oscilloscopes. The reference lead must be
connec
ServiceSafetySummary
The Se
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.
e lead to the circuit under test before connecting the probe input.
he probe and accessories. Before each use, inspect the probe and
ted to earth potential (0 V).
rviceSafetySummarysection contains additional information required to
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
isconnect the power cord from the mains power before removing any covers or
d
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.
MDO3000 Series Mixed Domain Oscilloscopes Service Manual vii
Important Safety Information
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.
Symbols and Terms on the Product
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.
e marking.
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
betakentoavoidthem. (Thissymbolmayalsobeusedtorefertheuserto
ratings in the manual.)
viii MDO3000 Series Mixed Domain Oscilloscopes Service Manual
Preface
This service manual provides information that you need to troubleshoot,
disassemble, and replace parts on the following Tektronix oscilloscopes. Go to
tek.com to fin
d operation instructions on your oscilloscope.
Manual Conventions
Modules
Model Bandwidth Analog channels
MDO3012
MDO3014
MDO3022
MDO3024
MDO3032
MDO3034
MDO3052
MDO3054
MDO3102 1 GHz
MDO3104 1 GHz
s manual uses certain conventions that you should become familiar with
Thi
100 MHz 2
100 MHz 4
200 MHz 2
200 MHz 4
350 MHz 2
350 MHz 4
500 MHz 2
500 MHz 4
2
4
RF frequency
Upto3GHz
Upto3GHz
Upto3GHz
Upto3GHz
Upto3GHz
Upto3GHz
Upto3GHz
Upto3GHz
Upto3GHz
Upto3GHz
before performing service.
Throughout this manual, any replaceable component, assembly, or part i s referred
obythetermmodule.
t
Replaceable Parts
This manual refers to any field-replaceable assembly or mechanical part
specifically by its name or generically as a replaceable part. 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.
Safety
Symbols and terms related to safety appear in the General Safety Summary.
Information for service procedures appears in both the General Safety Summary
and the Service Safety Summary.
MDO3000 Series Mixed Domain Oscilloscopes Service Manual ix
Loading...