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Service Manual
DPO4000 Series
Digital Phosphor Oscilloscopes
071-1844-00
This document applies to firmware version 1.00
and above.
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com
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. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
TekLink is a trademark 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:
HIn North America, call 1-800-833-9200.
HWorldwide, 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 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,
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 to a location within the country 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 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 PARTICULAR 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.
DPO4000 Series Service Manual i
Table of Contents
General Safety Summary iii...................................
Service Safety Summary v....................................
Environmental Considerations vii...............................
Preface ix...................................................
Manual Conventions ix..............................................
Related Documentation ix...........................................
Operating Information 1--1.....................................
Theory of Operation 2--1.......................................
Block Diagrams 2--1.................................................
Power Supply 2--2...................................................
I/O Board 2--2......................................................
Main Board 2--2.....................................................
Front--Panel Board 2--3...............................................
Adjustment Procedures 3--1.....................................
Required Equipment 3--1..............................................
Overview of the Adjustment Process 3--2.................................
Factory Adjustment Procedure 3--3......................................
Maintenance 4--1..............................................
Preventing ESD 4--1.................................................
Inspection and Cleaning 4--1...........................................
General Care 4--2................................................
Interior Cleaning 4--2.............................................
Exterior Cleaning 4--2............................................
Overview of Removal Procedures 4--6...................................
Removal Procedures 4--8..............................................
Troubleshooting 4--12.................................................
Troubleshooting Procedure 4--13.........................................
Unpacking and Repacking Instructions 4--16...............................
Mechanical Parts List 5--1......................................
Parts Ordering Information 5--1.........................................
Using the Replaceable Parts List 5--2....................................
Index Index--1....................................................
Table of Contents
ii DPO4000 Series Service Manual
List of Tables
Table 4--1: External inspection check list 4--3......................
Table 4--2: Internal inspection check list 4--4......................
List of Figures
Figure 2--1: DPO4000 series block diagram 2--1....................
Figure 4--1: Locator for trim and cabinet removal 4--7...............
Figure 4--2: Locator for internal modules 4--8......................
Figure 4--3: Primary troubleshooting procedure 4--13................
Figure 4--4: AC power supply troubleshooting procedure 4--14.........
Figure 4--5: Module isolation troubleshooting procedure 4--15.........
Figure 5--1: Exploded view, case 5--4..............................
Figure 5--2: Exploded view: front panel and display,
4-channel instruments 5--6...................................
Figure 5--3: Exploded view: front panel 2-channel instruments 5--8....
Figure 5--4: Exploded view: power supply and I/O board 5--10........
Figure 5--5: Exploded view: mainboard, inverter board,
and side fans 5--12..........................................
DPO4000 Series Service Manual iii
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.
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.
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.
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.
ToAvoidFireor
Personal Injury
General Safety Summary
iv DPO4000 Series Service 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.
These terms may appear on the product:
HDANGER indicates an injury hazard immediately accessible as you read the
marking.
HWARNING indicates an injury hazard not immediately accessible as you
read the marking.
HCAUTION indicates a hazard to property including the product.
The following symbols may appear on the product:
CAUTION
Refer to Manual
Protective Ground
(Earth) Terminal Chassis Ground Mains Connected
ON (Power) Push button OUT
Push button
IN
Terms in this Manual
Symbols and Terms
on the Product
DPO4000 Series Service Manual v
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.
Service Safety Summary
vi DPO4000 Series Service Manual
DPO4000 Series Service Manual vii
Environmental Considerations
This section provides information about the environmental impact of the
product.
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.
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.
Product End-of-Life
Handling
Restriction of Hazardous
Substances
Environmental Considerations
viii DPO4000 Series Service Manual
DPO4000 Series Service Manual ix
Preface
This Service manual provides information to troubleshoot, disassemble, and
replace parts on the DPO4000 Series Digital Phosphor Oscilloscopes.
Manual Conventions
This manual uses certain conventions that you should become familiar with
before attempting service.
Throughout this manual, any replaceable component, assembly, or part is
referred to by the term module. A module is composed of electrical and
mechanical assemblies, circuit cards, interconnecting cables, and user-accessible
controls.
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.
Symbols and terms related to safety appear in the Service Safety Summary found
at the beginning of this manual.
Related Documentation
To read about Use these documents
Installation and Operation DPO4000 Series Digital Phosphor Oscilloscopes User
Manual (available in 11 languages)
Specifications and Performance DPO4000 Technical Reference (PDF only)
Programmer Commands DPO4000 Programmer Manual (PDF only)
Analysis and Connectivity Tools Getting Started with OpenChoicetSolutions Manual
Installing and testing applica-
tions modules
DPO4000 Series Application Modules Installation Instructions
Manual
Modules
Replaceable Parts
Safety
Preface
xDPO4000 Series Service Manual
Operating Information
DPO4000 Series Service Manual 1-1
Operating Information
For information on installing and operating your DPO4000 Series Digital
Phosphor Oscilloscope, please refer to the DPO4000 Series Digital Phosphor
Oscilloscopes User Manual. This manual is available on the Web at
www.tektronix.com.
Operating Information
1-2 DPO4000 Series Service Manual
Theory of Operation
DPO4000 Series Service Manual 2-1
Theory of Operation
This chapter describes the electrical operation of the oscilloscope to the module
level. Figure 2--1 shows the oscilloscope module interconnections.
Block Diagrams
Power
supply
Main board
Front panel
Input ports for
application
modules
Attenuator circuit
Display
back light
inverter
power
LCD
Display
Ch 1
Ch 1
Ch 2
Ch 2 Ch 3
EXT
Ch 4
2-channel oscilloscopes
3 Fans
AC Line
4-channel oscilloscopesEXT
Ethernet
connector
I/O Board
Compact
Flash Port
Aux Out
J100
J610
J570
J571
J850
J930
J680
J440
Bezel
buttons
J130
J420, J421
J170
J0480 J1
USB
J120
J510
Figure 2- 1: DPO4000 series block diagram
Theory of Operation
2-2 DPO4000 Series Service Manual
Power Supply
The power supply converts AC line voltage to +12V to power all internal
circuits.
I/O Board
The I/O board contains USB ports, Compact Flash port, an Ethernet connector,
TekLink, XGA Video, and a Trigger Out port.
Main Board
The main board module contains the following functions:
The acquisition system begins with the analog signal path and ends with a
digitized signal in memory. The signal enters a channel input, and then passes
through an attenuator and preamplifier. The analog signal from each preamplifier
goes through a digitizer, a time base controller, and then into acquisition
memory. The analog signal from each preamplifier is also distributed to a trigger
circuit.
The trigger system processes the analog signals from the preamplifiers and sends
trigger information to the time base controller. Advanced trigger functions are
enabled only when the appropriate application modules and supporting software
are installed.
The display system combines live waveform data from acquisition memory with
menus and text and stores this information in display memory. It then uses this
data to refresh the XGA display module (LCD).
Acquisition System
Trigger System
Display System
Theory of Operation
DPO4000 Series Service Manual 2-3
The processor system contains a 440EP Power PC microprocessor that controls
the entire instrument. The processor system also contains FLASH ROM, system
RAM, and interfaces to USB ports and a Compact flash slot.
The power converter receives +12V from the main power supply and generates
voltages for the analog and digital circuitry on the main board.
Front- Panel Board
The front-panel board contains a microprocessor that reads the front-panel
buttons and controls, and then sends this information to the processor system on
the main board. The front-panel board also generates the probe compensation
output signal and provides an interface to the application modules.
Processor System
Power Converter
Theory of Operation
2-4 DPO4000 Series Service Manual
Adjustment Procedures
DPO4000 Series Service Manual 3-1
Adjustment Procedures
This chapter contains the factory adjustment procedures for the DPO4000 series
oscilloscopes. Only qualified personnel should perform adjustment procedures.
Read the Service Safety Summary and the General Safety Summary before
performing any service procedures.
NOTE. The voltage references inside the oscilloscope are very stable over time
and should not require routine adjustment. Before performing any procedure in
this chapter, do the Performance Verification procedures to check whether the
oscilloscope meets specifications. See the DPO4000 Technical Reference.
Successful completion of this adjustment procedure automatically updates the
instrument Calibration Due date and time. (Completion of the Performance
Verification procedure does not update the instrument Calibration Due date and
time.)
Required Equipment
The following equipment, or a suitable equivalent, is required to complete these
procedures.
Description Minimum requirements Example
DC voltage source 50 mV to 70 V, ±0.1% amplitude
accuracy
Wavetek 9500 Oscilloscope
Calibrator with one 9510
Output Module
Sine Generator 1GHz Wavetek 9500 with 9530
t
t
d
l
Edge Generator 1 kHz with <50 ps ch--ch skew output modules
50 ΩBNC cable BNCmaletoBNCmale,≈10 in
(25 cm) long
Tektronix part number
012-0208-00
Adjustment tool Non conducting shaft with diame-
ter ≤2.5 mm (≤0.1 in)
Tektronix part number
003-1433-00
Adjustment Procedures
3-2 DPO4000 Series Service Manual
Overview of the Adjustment Process
Before performing adjustment procedures, you must warm up the oscilloscope at
least ten minutes in an ambient temperature between 20 °C and 30 °C. Adjust-
ments performed before warm-up or outside this temperature range may result in
poor performance.
The factory adjustment procedure consists of a series of steps; as you move
through these steps, the oscilloscope display provides instructions that describe
the specific input signal requirements for each step. If the the oscilloscope passes
the step, it moves on to the next step. If the oscilloscope fails, you can repeat the
step or choose to abort the procedure.
NOTE. Do not turn any knobs or push any front-panel buttons other than the
Next Step or Previous Step buttons during the adjustment procedure. Doing so
will cause the oscilloscope to abort the adjustment procedure. The oscilloscope
uses the previous calibration constants if the adjustment procedure is aborted.
The screen does not display the actual oscilloscope settings (such as channel
input impedance or vertical and horizontal settings) during the adjustment
procedure. The oscilloscope automatically sets the instrument settings, but these
settings may not read out correctly on the display.
During some steps, the instrument may appear to be idle for several minutes
while it is processing information internally.
If the oscilloscope completes all steps in the procedure successfully, a “Pass”
message is displayed and the new calibration constants take effect. If the
oscilloscope does not pass the procedure, the oscilloscope reverts to the previous
calibration settings.
Adjustment Procedures
DPO4000 Series Service Manual 3-3
Factory Adjustment Procedure
To perform the factory adjustment procedure, do these steps:
1. Connect the oscilloscope to an AC power source.
NOTE. You must connect the oscilloscope and the test equipment to the same AC
power circuit. Connect the oscilloscope and test instruments to a common power
strip if you are unsure of the AC power circuit distribution. Connecting the
oscilloscope and test instruments to separate AC power circuits can result in
offset voltages between the equipment, which can invalidate the adjustment
procedure.
2. Locate the hole in the rear panel that provides access to the CAL switch on
the rear panel.
CAL
3. Insert the adjustment tool into the CAL switch hole. Use the tool to push and
hold the CAL switch in while you power on the oscilloscope. Release the
switch when the oscilloscope shows the power-on message with the
oscilloscope graticule in the background.
4. Push the Default Setup button.
NOTE. Do not skip the recall Default Setup step. You must recall the factory
settings in order to correctly start the factory adjustment procedure.
5. Push the MENU OFF button.
6. Push the UTILITY button.
7. Push the System Config lower bezel button repeatedly to select Calibra-
tion.
Adjustment Procedures
3-4 DPO4000 Series Service Manual
8. Push the Factory lower bezel button.
9. Push the OK Do Factory Calibration side bezel button to start the
adjustment process.
10. Connect signals from the DC voltage source as instructed by the oscilloscope
display. After you connect the correct signal, push the OK Do Next Step
side bezel button to continue the process.
NOTE. The oscilloscope adjusts itself automatically using the reference signal
from the DC voltage source. You do not need to make any adjustments.
If you make an error, such as connecting the wrong input signal, you can repeat
the last step by pushing the Return to Previous Screen side bezel button.
11. Continue with the adjustment process until it is complete. You can abort the
process at any time by pushing the MENU OFF button.
12. Do the performance verification tests to verify that the adjustment procedure
has correctly calibrated the oscilloscope. (See the DPO4000 Technical
Reference.) Incorrect use of calibration equipment can cause the oscilloscope
to pass the adjustment procedure but fail performance verification.
Maintenance
DPO4000 Series Service Manual 4-1
Maintenance
This section contains the information needed to do periodic and corrective
maintenance on the oscilloscope as well as repackaging instructions if you need
to return the oscilloscope to Tektronix for service.
Preventing ESD
Before servicing this product, read the Safety Summary and Introduction at the
front of the manual and the electrostatic discharge (ESD) information below.
CAUTION. Static discharge can damage any semiconductor component in this
oscilloscope.
When performing any service that requires internal access to the oscilloscope,
adhere to the following precautions to avoid damaging internal modules and their
components due to electrostatic discharge.
1. Minimize handling of static-sensitive circuit boards and components.
2. Transport and store static-sensitive modules in their static protected
containers or on a metal rail. Label any package that contains static-sensitive
boards.
3. Discharge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling these modules. Do service of static-sensitive
modules only at a static-free work station.
4. Do not place anything capable of generating or holding a static charge on the
work station surface.
5. Handle circuit boards by the edges when possible.
6. Do not slide the circuit boards over any surface.
7. Avoid handling circuit boards in areas that have a floor or work-surface
covering capable of generating a static charge.
Inspection and Cleaning
Inspection and cleaning are done as preventive maintenance. Preventive
maintenance, when done regularly, may prevent oscilloscope malfunction and
enhance its reliability.
Maintenance
4-2 DPO4000 Series Service Manual
Preventive maintenance consists of visually inspecting and cleaning the
oscilloscope and using general care when operating it.
How often you do maintenance depends on the severity of the environment in
which the oscilloscope is used. A proper time to perform preventive maintenance
is just before oscilloscope adjustment.
The cabinet helps keep dust out of the oscilloscope and should normally be in
place when operating the oscilloscope.
The display is a soft plastic display and must be treated with care during
cleaning.
CAUTION. Improper cleaning agents or methods can damage the flat panel
display.
Avoid using abrasive cleaners or commercial glass cleaners to clean the display
surface.
Avoid spraying liquids directly on the display surface.
Avoid scrubbing the display with excessive force.
Clean the flat panel display surface by gently rubbing the display with a
clean-room wipe (such as Wypall Medium Duty Wipes, #05701, available from
Kimberly-Clark Corporation).
Use a dry, low-velocity stream of air to clean the interior of the chassis. Use a
soft-bristle, non-static-producing brush for cleaning around components. If you
must use a liquid for minor interior cleaning, use a 75% isopropyl alcohol
solution and rinse with deionized water.
WARNING. To avoid injury, power down the instrument and disconnect it from
line voltage before performing any procedure that follows.
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.
Clean the On/Standby switch using a dampened cleaning towel. Do not spray or
wet the switch directly.
General Care
Flat Panel Display
Cleaning
Interior Cleaning
Exterior Cleaning
Maintenance
DPO4000 Series Service Manual 4-3
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.
Lubrication. There is no periodic lubrication required for this oscilloscope.
Inspect the outside of the oscilloscope for damage, wear, and missing parts,
using Table 4--1 as a guide. Immediately repair defects that could cause personal
injury or lead to further damage to the oscilloscope.
Table 4- 1: External inspection check list
Item Inspect for Repair action
Cabinet, front panel,
and cover
Cracks, scratches, deformations,
damaged hardware
Repair or replace defective
module
Front-panel knobs Missing, damaged, or loose
knobs
Repair or replace missing or
defective knobs
Connectors Broken shells, cracked insulation,
and deformed contacts. Dirt in
connectors
Repair or replace defective
modules. Clear or wash out dirt.
Carrying handle, and
cabinet feet
Correct operation Repair or replace defective
module
Accessories Missing items or parts of items,
bent pins, broken or frayed
cables, and damaged connectors
Repair or replace damaged or
missing items, frayed cables, and
defective modules
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 using excess
force or you may damage the plastic display surface.
CAUTION. To prevent getting moisture inside the oscilloscope during external
cleaning, use only enough liquid to dampen the cloth or applicator.
Exterior Inspection
Maintenance
4-4 DPO4000 Series Service Manual
To access the inside of the oscilloscope for inspection and cleaning, refer to the
Removal Procedures in this section.
Inspect the internal portions of the oscilloscope for damage and wear, using
Table 4--2 as a guide. Repair any defects immediately.
If any circuit board is repaired or replaced, check Table 4--2 to see if it is
necessary to adjust the oscilloscope.
CAUTION. To prevent damage from electrical arcing, ensure that circuit boards
and components are dry before applying power to the oscilloscope.
Table 4- 2: Internal inspection check list
Item Inspect for Repair action
Circuit boards Loose, broken, or corroded
solder connections. Burned
circuit boards. Burned, broken, or
cracked circuit-run plating.
Remove and replace damaged
circuit board.
Resistors Burned, cracked, broken, blis-
tered condition.
Remove and replace damaged
circuit board.
Solder connections Cold solder or rosin joints. Resolder joint and clean with
isopropyl alcohol.
Capacitors Damaged or leaking cases.
Corroded solder on leads or
terminals.
Remove and replace damaged
circuit board.
Wiring and cables Loose plugs or connectors.
Burned, broken, or frayed wiring.
Firmly seat connectors. Repair or
replace modules with defective
wires or cables.
Chassis Dents, deformations, and dam-
aged hardware.
Straighten, repair, or replace
defective hardware.
Interior Inspection
Maintenance
DPO4000 Series Service Manual 4-5
Cleaning Procedure — Interior. To clean the oscilloscope interior, do the following
steps:
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 rinsed with warm deionized water. (A cotton-
tipped applicator is useful for cleaning in narrow spaces and on circuit
boards.)
STOP. If, after doing steps 1 and 2, a module is clean upon inspection, skip the
following steps.
If steps 1 and 2 do not remove all the dust or dirt, the oscilloscope may be spray
washed using a solution of 75% isopropyl alcohol by doing the following steps:
1. Gain access to the parts to be cleaned by removing easily accessible shields
and panels (see Removal Procedures).
2. Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the
majority of the alcohol to evaporate.
3. Use hot (120 _F to 140 _F) deionized water to thoroughly rinse them.
4. Dry all parts with low-pressure, deionized air.
5. Dry all components and assemblies in an oven or drying compartment using
low-temperature (125 _F to 150 _F) circulating air.
Maintenance
4-6 DPO4000 Series Service Manual
Overview of Removal Procedures
Refer to Figures 4--1 and 4--2 for the location of modules that you are removing
or installing. If you are disassembling the instrument for cleaning, refer to the
Inspection and Cleaning procedure on page 4--1 for instructions.
The Mechanical Parts List chapter provides a list of all replaceable modules.
Any replaceable component, assembly, or part is referred to by the term module.
WARNING. Only qualified personnel should perform service procedures. Before
doing this or any other procedure in this manual, read the General Safety
Summary and Service Safety Summary located at the beginning of this manual.
Also, to prevent possible injury to service personnel or damage to electrical
components, read Preventing ESD on page 4--1.
You will need the following tools to remove and replace all the modules in the
instrument.
HTorque-limiting screwdriver, 12 in ⋅lb (1.3 N ⋅m) range with TORX T-15
tips. (If you are using a magnetic screwdriver with interchangeable bits, the
T-15 bit must be a long bit, at least 5 cm (2 in) overall length.)
HScrewdriver with 1@8inch flat blade
HPhillips screwdrivers with P0 and P2 tips
H3@16 inch nut driver
HNeedle-nose pliers
Use the following tables to remove the trim, cabinet, and internal modules.
WARNING. Before doing any procedure in this subsection, disconnect the power
cord from the line voltage source. Failure to do so could cause serious injury or
death.
List of Modules
Tools Required
Trim, Cabinet, and Module
Removal
Maintenance
DPO4000 Series Service Manual 4-7
Rear case
Front cover
Front foot
Figure 4- 1: Locator for trim and cabinet removal
Maintenance
4-8 DPO4000 Series Service Manual
Front Panel
assembly
Main board
I/O board
assembly
Side fans
assembly
Power supply
assembly
Inverter board
assembly
Display
assembly
Front Case
assembly
Figure 4- 2: Locator for internal modules
Removal Procedures
These procedures assume you have access to the module that you are removing.
Refer to the exploded drawings on pages 5--4 through 5--12 and to Figures 4--1
and 4--2, on pages 4--7 and 4--8 to determine which trim and or modules to
remove.
CAUTION. When removing or installing the keypad, make sure you do not touch
the switch contacts with your fingers. The oils in your fingers will degrade or
damage the switch contacts. To help prevent damage to the keypad use cotton
gloves when removing or installing the keyboard pad.
Maintenance
DPO4000 Series Service Manual 4-9
CAUTION. To avoid damage to the front panel Standby/On switch assembly, do
not set the Display module assembly on a work surface. Sliding the oscilloscope
over the edge of the work surface could break off the On/Standby switch
assembly.
Follow these steps to remove the rear case. Use a TORX T-15 screwdriver tip.
SeeFigure5--1onpage5--4.
1. Remove the 4 screws from the back and sides of the rear case.
2. Grasp the case and pull outwards to remove it.
Follow these steps to remove the power supply module. You need to have
previously removed the rear case. Use a TORX T-15 screwdriver tip. See
Figure 5--4 on page 5--10.
1. Remove the 7 screws that secure the power supply module to the chassis.
2. Disconnect the power supply fan and connectors from the I/O board and the
main board.
3. Lift the power supply module off the chassis.
Power Supply Fan. Follow these steps to remove the power supply fan assembly.
You need to have previously removed the rear case and power supply assembly.
Use a TORX T-15 and a P2 screwdriver tip. See Figure 5--4 on page 5--10.
1. Remove the 5 screws that attach the power supply cover.
2. Lift the power supply cover off.
3. Use the P2 screwdriver tip and remove the 2 screws that attach the fan to the
cover.
Power Supply. Follow these steps to remove the power supply. You need to have
previously removed the rear case and power supply assembly. Use a TORX T-15
screwdriver tip. See Figure 5--4 on page 5--10.
1. Remove the 5 screws that attach the power supply cover.
2. Lift the power supply cover off.
3. Remove the 4 screws that attach the power supply to the power supply
bracket.
Rear Case
Power Supply Module
Maintenance
4-10 DPO4000 Series Service Manual
Follow these steps to remove the I/O board. You need to have previously
removed the rear case and power supply module. Use TORX T-15 screwdriver
tip. See Figure 5--4 on page 5--10.
1. Remove the 5 screws that hold the I/O board to the chassis.
2. Lift straight up to remove.
Follow these steps to remove the side fan assembly. You need to have previously
removed the rear case, power supply assembly, and I/O board. Use a TORX T-15
screwdriver tip. See Figure 5--5 on page 5--12.
1. Remove the 6 screws that hold the side fans to the chassis.
2. Disconnect the two fan connectors from the main board.
3. Slide the fan assembly out and away from the chassis.
Follow these steps to remove the main board. You need to have previously
removed the rear case, power supply, I/O board, and side fans. Use a TORX T-15
screwdriver tip. See Figure 5--5 on page 5--12.
1. Disconnect the display cable from the main board.
2. Disconnect the backlight cable from the inverter board.
3. Remove 13 screws from the main board that connect it to the chassis.
4. Lift the main board up to remove.
Inverter board. Follow these steps to remove the inverter board from the main
board. You must have previously removed the main board. Use a TORX T-15
screwdriver tip. See Figure 5--5 on page 5--12.
1. Disconnect the inverter board cable from the main board.
2. Remove the inverter board from the plastic bracket.
3. Remove the 2 screws that hold the inverter board bracket to the main board.
4. Remove the inverter board bracket from the main board.
I/O Board
Main Fans
Main Board
Maintenance
DPO4000 Series Service Manual 4-11
Follow these steps to remove the front case assembly. You must have previously
removed the Rear Case Assembly. See Figure 5--2 on page 5--6.
1. Pull off 14 knobs (2 large, 5 medium, 6 small, and 1 rotary).
2. Remove the front case by pulling back the board snaps and lifting the lower
right corner of the front case.
3. Place the oscilloscope face up on a soft surface (such as an anti-static mat),
with the bottom facing you.
4. Disconnect the bezel button flex circuit by gently pulling the flex circuit out
of the connector.
Follow these steps to remove the display module. You need to have previously
removed the rear case, power supply assembly, I/O board, and front case
assembly. Use a TORX T-15 screwdriver tip. See Figure 5--2 on page 5--6.
1. Disconnect the display power cable from the main board and the backlight
cable from the inverter board.
2. Remove the 4 screws that hold the display to the front chassis.
3. Gently lift the display up and off of the chassis.
CAUTION. Be careful when removing and reinstalling the Display module cables.
If the connectors have bent pins or are installed incorrectly; the Display may be
destroyed.
Follow these steps to remove the front panel module. You need to have
previously removed the front case assembly. Use a TORX T-15 screwdriver tip.
SeeFigure5--2onpage5--6.
1. Remove the 9 screws holding the front panel board to the chassis.
2. Lift the front panel board off of the chassis.
Front Case Assembly
Display
Front Panel
Maintenance
4-12 DPO4000 Series Service Manual
Troubleshooting
This section contains information and procedures to help you isolate a defective
module in a DPO4000 series oscilloscope.
WARNING. Before doing this or any other procedure in this manual, read the
General Safety Summary and Service Safety Summary found at the beginning of
this manual. Also, to prevent possible injury to service personnel or damage to
electrical components, read Preventing ESD on page 4--1.
If you replace the main board, you must adjust the instrument after repair. Refer
Adjustment Procedures beginning on page 3--1 for information about adjustment.
You need the following equipment to troubleshoot the instrument.
Tools and Equipment Example
DMM 3.5 or greater digit DMM
Adjustment After Repair
Required Tools and
Equipment
Maintenance
DPO4000 Series Service Manual 4-13
Troubleshooting Procedure
Figures 4--3 through 4--5 are troubleshooting procedure flowcharts. Use them to
troubleshoot an instrument failure. Begin with Figure 4--3.
NOTE. Before performing the troubleshooting procedure, remove the instrument
cabinet (see page 4--9 ).
Yes
No
Done.
Power on the
instrument.
Perform the AC Power Supply
troubleshooting procedure
(Figure 4--4).
Yes
No Perform the Module Isolation
troubleshooting procedure
(Figure 4--5).
Does
the instrument pass
all the
diagnostics?
Does
the instrument
display the power-up
screen?
Figure 4- 3: Primary troubleshooting procedure
Maintenance
4-14 DPO4000 Series Service Manual
¯Reconnect loose cables.
¯Return to top of Figure 4--3.
No
Yes
Are there
+12 volts on the
connector
pins ?
¯Measure for +12 V DC (±0.3
V) on the connector pins. (See
figure at right)
!WARNING!
Be careful when measuring near
the AC power supply, as there
are line voltages present on
exposed parts.
AC power supply OK. Return
the DPO4000 oscilloscope to
the nearest Tektronix Service
Center for repair.
Continued from
Figure 4--3.
Connect AC power cord.
¯Power off oscilloscope.
¯Disconnect AC power cord.
¯Remove instrument case.
¯Check that all cables are
connected and fully seated into
board connectors.
No
Yes
Are all cables
connected?
Replace the AC Power
Supply module.
Figure 4- 4: AC power supply troubleshooting procedure
Maintenance
DPO4000 Series Service Manual 4-15
¯Push UTILITY.
¯Push System to select
Self Test.
¯Push OK Run Self Test.
¯Determine failure from
Self Test Results.
¯Use table to select module to
replace.
From the oscilloscope
power-up diagnostics
message display.
Oscilloscope is operating OK.
Does
the power-up
screen report any
errors?
Yes
No
Failed Test Most Likely Cause
Acquisition
CPU
Display
Front Panel
I/O
ROM
App Modules
Main board
Main board
Main board
Front Panel (or Main board)
Comm module (or Main board)
Main board
Front Panel (or App Keys)
Figure 4- 5: Module isolation troubleshooting procedure
Maintenance
4-16 DPO4000 Series Service Manual
Unpacking and Repacking Instructions
This section contains the information needed to unpack the oscilloscope and
repack it for shipment or storage.
The oscilloscope and its standard accessories are carefully packed at the factory
in a shipping carton. If, upon receipt, damage to the shipping carton is evident,
notify the shipper. Tektronix, Inc. is not responsible for damage caused during
shipping.
If you have not already done so, carefully remove the oscilloscope and its
accessories from the shipping carton and inspect them for damage. Save the
shipping carton for repacking or storage.
Use a corrugated cardboard shipping carton having a test strength of at least
275 pounds (125 kg) and with an inside dimension at least six inches (15.25 cm)
greater than the instrument dimensions.
If the instrument is being shipped to a Tektronix Service Center, enclose the
following information:
HThe owner’s address
HName and phone number of a contact person
HType and serial number of the instrument
HReason for returning
HA complete description of the service required
Seal the shipping carton with an industrial stapler or strapping tape.
Mark the address of the Tektronix Service Center and also your own return
address on the shipping carton in two prominent locations.
The oscilloscope should be stored in a clean, dry environment. The following
environmental characteristics apply for both shipping and storage:
HTemperature range: --20 °Cto+60°C
HAltitude: To 15,000 m
See the DPO4000 Technical Reference for a complete listing of the environmen-
tal characteristics.
Unpacking
Repacking
Storage
Mechanical Parts List
DPO4000 Series Service Manual 5-1
Mechanical Parts List
This chapter contains a list of the replaceable modules for the DPO4000 series
oscilloscope. 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
following information in your order.
HPart number (see Part Number Revision Level below)
HInstrument type or model number
HInstrument serial number
HInstrument modification number, if applicable
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.
Change information, if any, is located at the rear of this manual.
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.
670-7918-03
Part Number Revision Level
670-7918-XX
Revision Level May Show as XX
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 needed for
your product, based on the information you provide.
Part Number Revision
Level
Mechanical Parts List
5-2 DPO4000 Series Service Manual
Modules can be serviced by selecting one of the following three options. Contact
your local Tektronix service center or representative for repair assistance.
Module Exchange. In some cases you may exchange your module for a reman-
ufactured 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-TEK-WIDE, extension 6630.
Module Repair and Return. You may ship your module to us for repair, after which
we will return it to you.
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 instrument. Use this list to identify and order replacement
parts. The following table describes each column in the parts list.
Parts List Column Descriptions
Column Column Name Description
1Figure & Index Number Items in this section are referenced by figure and index numbers to the exploded view
illustrations that precede the list
2Tektronix Part Number Use this part number when ordering replacement parts from Tektronix
3 and 4 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
5Qty This indicates the quantity of parts used
6Name & Description An item name is separated from the description by a colon (:). Because of space limitations, an
item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook
H6-1 for further item name identification
7Mfr. Code This indicates the code of the actual manufacturer of the part
8Mfr. Part Number This indicates the actual manufacturer’s or vendor’s part number
Abbreviations conform to American National Standard ANSI Y1.1--1972.
Module Servicing
Abbreviations
Mechanical Parts List
DPO4000 Series Service Manual 5-3
The table titled Manufacturers Cross Index shows codes, names, and addresses
of manufacturers or vendors of components listed in the parts list.
Manufacturers cross index
Mfr.
code Manufacturer Address City, state, zip code
06383 PANDUIT CORP 17303 RIDGELAND AVE TINLEY PARK, IL 60477--3048
06915 RICHCO 5825 N TRIPP AVE P.O. BOX 804238 CHICAGO, IL 60646
0B445 ELECTRI--CORD MFG CO INC 312 EAST MAIN STREET WESTFIELD, PA 16950
0KB01 STAUFFER SUPPLY CO 810 SE SHERMAN PORTLAND, OR 97214--4657
0KB05 NORTH STAR NAMEPLATE INC 5750 NE MOORE COURT HILLSBORO, OR 97124--6474
1WNW6 ACCRA--FAB INC 23201 E APPLEWAY LIBERTY LAKE, WA 99019
30817 LAIRD TECHNOLOGIES WORLD
HEADQUARTERS
ONE SHIELDING WAY PO BOX 650 DELAWARE WATER GAP, PA 18327--0650
4T165 NEC ELECTRONICS INC 2880 SCOTT BLVD PO BOX 58062 SANTA CLARA, CA 95052--2554
57003 CHOMERICS INC 23839 S. BANNING BLVD CARSON, CA 90745
7X318 KASO PLASTICS INC 5720--C NE 121ST AVE, STE 110 VANCOUVER, WA 98682
80009 TEKTRONIX INC 14150 SW KARL BRAUN DR
PO BOX 500
BEAVERTON, OR 97077--0001
80640 ARTESYN TECHNOLOGY POWER
CONVERSION
7 ELKIN ST SOUTH BOSTON, MA 02127--1615
83285 STEWARD INC 1200 E 36TH ST~PO BOX 510 CHATTANOOGA, TN 37401--0510
S3109 FELLER U.S. CORPORATION 10B VAN DYKE AVENUE NEW BRUNSWICK, NJ 08901
TK1373 PATELEC--CEM 10156 TORINO VAICENTALLO 62/456 ITALY
TK2548 XEROX CORPORATION 7431 EVERGREEN PARKWAY HILLSBORO, OR 97124
TK6121 TUMBLER CORP 4241 BUSINESS CENTER DR FREMONT, CA 94538
TK6159 RAD TECHNOLOGIES 2900 NW 229TH AVE HILLSBORO, OR 97124
TK6253 VOLEX INC 646 CARRIBEAN DR SUNNYVALE, CA 94089--1108
TK6433 I--SHENG ELECTRIC WIRE & PLASTIC
(KUNSHAN) CO LTD.
289 ZING YANG ZHONG RD TECHNICAL DEVELOPMENT ZONE JIANGSU,
CHINA CN
TK6547 SOLECTRON MILPITAS INC 1177 GIBRALTAR DRIVE SOLECTRON
BUILDING 9
MILPITAS, CA 95035
TK6612 HANACO MANUFACTURING COMPANY 3965 SCHAEFER AVENUE CHINO, CA 91710
TK6619 ACE MOLD (SHANGHAI) COMPANY LTD 318 NORTH ROUND--THE--CITY ROAD SHANGHAI COMPREHENSIVE INDUSTRIAL
DEVELOPMENT ZONE, FENGXIAN SHANGHAI,
CN
TK6709 SOLECTRON (SHANGHAI) 798 YING LUN RO AD~WALGAOQIAO FTZ PUDONG, SHANGHAI, CN CN 200131
Mfr. Code to Manufacturer
Cross Index
Mechanical Parts List
5-4 DPO4000 Series Service Manual
Figures 5--1 through 5--5 on the following pages show the module-level
exploded views of the DPO4000 series oscilloscope. The adjacent page is the list
of components for that exploded view, indexed by the numbers in the figure.
1
2
3
44
5
Figure 5- 1: Exploded view, case
Exploded Views
Mechanical Parts List
DPO4000 Series Service Manual 5-5
Replaceable Parts List
Fig. &
index
number
Tektronix part
number
Serial no.
effective
Serial no.
discont’d Qty Name & description
Mfr.
code Mfr. part number
5--1 Case
--1 200--4908--00 1 COVER, FRONT, PROTECTIVE TK6710 200--4908--00
--2 202--0441--00 1 CASE, REAR 80009 202--0441--00
--3 211--1174--00 4 SCREW,MACHINE; W/HEAVY PATCH THREADLOCKING
MATERIAL; 6--32 X 0.312 L,PNH,STL CAD PLT,T15
0KB01 211--1174--00
--4 335--1186--00 1 MARKER,IDENT;LABEL,REAR PANEL 80009 335--1186--00
--5 348--1798--00 2 FOOT, FRONT 80009 348--1798--00
Mechanical Parts List
5-6 DPO4000 Series Service Manual
1
2
3
4
56
7
Flex Circuit
J13
13
8
9
10
11
12
13
14
15
16
1718
19
20
Figure 5- 2: Exploded view: front panel and display, 4-channel instruments
Mechanical Parts List
DPO4000 Series Service Manual 5-7
Replaceable Parts List
Fig. &
index
number
Tektronix part
number
Serial no.
effective
Serial no.
discont’d Qty Name & description
Mfr.
code Mfr. part number
5--2 Front Panel
--1 202--0432--00 1 FRONT CASE ASSEMBLY 80009 202--0432--00
--2 335--1187--00 1 LABEL. FRONT PANEL, MODEL DPO4054 80009 335--1187--00
335--1191--00 1 LABEL. FRONT PANEL, MODEL DPO4104 80009 335--1191--00
335--1193--00 1 LABEL. FRONT PANEL, MODEL DPO4034 80009 335--1193--00
--3 366--0860--01 5 KNOB, .685 DIA, SOFT TOUCH 80009 366--0860--01
--4 366--0859--01 6 KNOB, .470 DIA, SOFT TOUCH 80009 366--0859--01
--5 366--0861--01 2 KNOB, .925 DIA, SOFT TOUCH 80009 366--0861--01
--6 366--0865--00 1 KNOB, JOG 80009 366--0865--00
--7 358--0883--00 1 BUSHING (JOG SHUTTLE KNOB) TK2565 358--0883--00
--8 366--0867--00 1 KNOB, SHUTTLE 80009 366--0867--00
--9 335--1467--00 1 LABEL. FRONT PANEL, OVERLAY, RUSSIAN 80009 335--1467--00
335--1466--00 1 LABEL. FRONT PANEL, OVERLAY, KOREAN 80009 335--1466--00
335--1465--00 1 LABEL. FRONT PANEL, OVERLAY, STD CHINESE 80009 335--1465--00
335--1464--00 1 LABEL. FRONT PANEL, OVERLAY, SIM CHINESE 80009 335--1464--00
335--1463--00 1 LABEL. FRONT PANEL, OVERLAY, PORTUGUESE 80009 335--1463--00
335--1462--00 1 LABEL. FRONT PANEL, OVERLAY, JAPANESE 80009 335--1462--00
335--1461--00 1 LABEL. FRONT PANEL, OVERLAY, SPANISH 80009 335--1461--00
335--1460--00 1 LABEL. FRONT PANEL, OVERLAY, GERMAN 80009 335--1460--00
335--1459--00 1 LABEL. FRONT PANEL, OVERLAY, ITALIAN 80009 335--1459--00
335--1458--00 1 LABEL. FRONT PANEL, OVERLAY, FRENCH 80009 335--1458--00
10 335--1183--00 1 LABEL. FRONT PANEL, 4CH 80009 335--1183--00
11 200--4418--00 1 COVER; OPTION KEY DOOR,0.7270 X 1.2250 X 0.310,PC/
ABS,FR110,SILVER GRAY
7X318 200--4418--00
12 260--2798--00 1 SWITCH,KEYPAD;ELASTOMERIC FRONT PANEL 80009 260--2798--00
13 211--1174--00 9 SCREW,MACHINE; W/HEAVY PATCH THREADLOCKING
MATERIAL; 6--32 X 0.312 L,PNH,STL CAD PLT,T15
0KB01 211--1174--00
14 672--6132--01 1 FRONT PANEL BOARD, 4 CH 80009 672--6132--00
15 335--1194--00 1 MARKER, FRONT PANEL, I/O 80009 335--1194--00
16 348--1860--00 2 GASKET, ELEC; CONDUCTIVE URETHANE FOAM 57003 77--03--3150--09600--
AP
17 441--2378--00 1 CHASSIS;FRONT; SAFETY CONTROLLED TK6709 441--2378--00
18 650--4715--00 1 ASSEMBLY, LCD DISPLAY 80009 650--4715--00
19 174--5014--00 1 CABLE ASSY,SP;DISPLAY DATA,FLAT FLEX 80009 174--5014--00
20 211--1174--00 4 SCREW,MACHINE; W/HEAVY PATCH THREADLOCKING
MATERIAL; 6--32 X 0.312 L,PNH,STL CAD PLT,T15
0KB01 211--1174--00
Mechanical Parts List
5-8 DPO4000 Series Service Manual
1
2
3
4
5
67
Figure 5- 3: Exploded view: front panel 2-channel instruments
Mechanical Parts List
DPO4000 Series Service Manual 5-9
Replaceable Parts List
Fig. &
index
number
Tektronix part
number
Serial no.
effective
Serial no.
discont’d Qty Name & description
Mfr.
code Mfr. part number
5--3 Front Panel
--1 335--1189--00 1 LABEL. FRONT PANEL, MODEL DPO4032 80009 335--1189--00
--2 335--1185--00 1 MARKER,IDENT;LABEL,FRONT PANEL,2CH 80009 335--1185--00
--3 260--2812--00 1 SWITCH,KEYPAD;ELASTOMERIC FRONT PANEL TK6612 260--2812--00
--4 672--6133--01 1 CIRCUIT BOARD; FRONT PANEL;2 CHANNEL 80009 672--6133--01
--5 200--4906--00 2 COVER;BNC FILLER TK6433 200--4906--00
--6 366--0860--01 3 KNOB, .685 DIA, SOFT TOUCH 80009 366--0860--01
--7 366--0859--01 4 KNOB, .470 DIA, SOFT TOUCH 80009 366--0859--01
Mechanical Parts List
5-10 DPO4000 Series Service Manual
Main board
I/O board assemly
Main board
J310
J780
J850
1
2
3
4
5
6
7
8
9
10
2
2
2
Figure 5- 4: Exploded view: power supply and I/O board
Mechanical Parts List
DPO4000 Series Service Manual 5-11
Replaceable Parts List
Fig. &
index
number
Tektronix part
number
Serial no.
effective
Serial no.
discont’d Qty Name & description
Mfr.
code Mfr. part number
5--4 Main Board
--1 407--5019--00 1 BRACKET;POWER SUPPLY COVER TK6709 407--5019--00
--2 211--0722--00 19 SCREW,MACHINE; 6--32 X 0.250,PNH,STL,CDPL,T--15 TORX 0KB01 211--0722--00
--3 211--1213--00 1 SCREW, METRIC 5 X 10MM, FLATHEAD, STL, ZINC, POSI 0KB01 211--1213--00
--4 119--7223--00 1 FAN,TUBEAXIAL; 12VDC,0.09A,1.4W,19
CFM,4000RPM,31DBA,60MM X 60MM X 25MM,W/7IN LEADS
& CONNECTOR,TACH OUT
TK6159 119--7223--00
--5 650--4939--00 1 POWER SUPPLY SUB ASSEMBLY;DOMESTIC 80009 650--4939--00
--6 366--0844--00 1 PUSH BUTTON;POWER; SAFETY CONTROLLED TK6619 366--0844--00
--7 672--6131--01 1 I/O BOARD 80009 672--6131--01
--8 335--1213--00 1 MARKER,IDENT;LABEL,REAR PANEL,LEFT 80009 335--1213--00
--9 335--1214--00 1 MARKER,IDENT;LABEL,REAR PANEL, RIGHT 80009 335--1214--00
10 337--4378--00 1 SHIELD;INSULATOR,ELECTRICAL 80009 337--4378--00
Mechanical Parts List
5-12 DPO4000 Series Service Manual
I/O board
assemly
Main board
J610
Display assembly
to Inverter board
assembly
Main board
Inverter board
assembly
Main board
CN2
CN1
J930
J571
J570
1
2
3
4
5
6
7
8
9
Figure 5- 5: Exploded view: mainboard, inverter board, and side fans
Mechanical Parts List
DPO4000 Series Service Manual 5-13
Replaceable Parts List
Fig. &
index
number
Tektronix part
number
Serial no.
effective
Serial no.
discont’d Qty Name & description
Mfr.
code Mfr. part number
5--5 Main Board
--1 650--4937--00 1 FAN TRAY ASSEMBLY 80009 650--4937--00
--2 119--6806--00 1 POWER SUPPLY; INVERTER,1200VAC NO--LOAD & 600VAC
@ 85KOHM LOADED OUTPUT
4T165 104PW191
--3 211--1143--00 2 SCREW,PT; K35--1.57,PAN HEAD,T--15 0KB01 211--1143--00
--4 407--5113--00 1 BRACKET,PCB;BACKLIGHT BOARD TK6433 407--5113--00
--5 174--5015--00 1 CABLE ASSY,SP;INVERTER POWER,FLAT FLEX 80009 174--5015--00
--6 671--5843--00 1 CIRCUIT BD ASSY; MAIN BOARD, (DPO4104) TK6547 671--5843--00
671--5959--00 1 CIRCUIT BD ASSY;350MHZ 4 CHANNEL, (DPO4054) TK6547 671--5959--00
671--5960--00 1 CIRCUIT BD ASSY;350MHZ 2 CHANNEL, (DPO4034) TK6547 671--5960--00
671--5961--00 1 CKT BD ASSY; 2 CHANNEL, (DPO4032) TK6547 671--5961--00
--7 211--0722--00 6 SCREW,MACHINE; 6--32 X 0.250,PNH,STL,CDPL,T--15 TORX
DR
0KB01 211--0722--00
--8 174--5014--00 1 CABLE ASSY,SP;DISPLAY DATA,FLAT FLEX 80009 174--5014--00
--9 211--1174--00 13 SCREW,MACHINE; W/HEAVY PATCH THREADLOCKING
MATERIAL; 6--32 X 0.312 L,PNH,STL CAD PLT,T15
211--1174--00
Mechanical Parts List
5-14 DPO4000 Series Service Manual
Replaceable Parts List
Fig. &
index
number
Tektronix
part number
Serial no.
effective
Serial no.
discont’d Qty Name & description
Mfr.
code Mfr. part number
STANDARD ACCESSORIES
-- -- -- A c c e s s o r i e s
161--0104--05 1 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 M
(OPTION A3 -- AUSTRALIAN)
TK1373 161--0104--05
161--0104--06 1 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 M
(OPTION A1 -- EUROPEAN)
S3109 1923
161--0104--07 1 CA ASSY,PWR:3,1.0MM SQ,240V/10A,2.5 M
(OPTION A2 -- UNITED KINGDOM)
TK6121 21072WH518.2
161--0167--00 1 CA ASSY,PWR:3,0.75MM SQ,250V/10A,2.5 M
(OPTION A5 -- SWITZERLAND)
0B445 161--0167--00
161--0306--00 1 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 M
(OPTION A10 -- CHINA)
TK6253 92--2637--250BKH
161--0066--09 1 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 M
(OPTION A11 -- INDIA)
TK6121 2171H518.2
161--0298--00 1 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 M
(OPTION A6 -- JAPAN)
0B445 161--0298--00
161--0066--00 1 CABLE ASSY,PWER,:3,18 AWG,92 L
(STANDARD CABLE)
S3109 161--0066--00
---------------- 1 POUCH, PLASTIC:POUCH TK2582 TK1441 BLACK
CORDURA
Index
DPO4000 Series Service Manual Index- 1
Index
A
acquisition system, description, 2--2
adjustment procedure, 3--2
factory, 3--3
adjustments, 3--1
application modules, ix
C
cabinet, 4--7
calibration due date, 3--1
calibration switch, 3--3
circuit description, 2--1–2--4
cleaning, 4--5
cleaning and inspection
exterior, 4--2, 4--3
flat panel display, 4--2
interior, 4--2
connectivity, ix
D
description, circuit theory, 2--1–2--4
diagram, 2--1
display module removal, 4--11
display system, description, 2--2
documentation, ix
E
electrostatic discharge, 4--1
precautions, 4--1–4--2
environmental characteristics, 4--16
F
factory adjustment, 3--2
fans removal, 4--10
flat panel display, cleaning, 4--2
flowcharts, troubleshooting, 4--13
front case removal, 4--10
front panel removal, 4--11
front panel, description, 2--3
I
I/O board removal, 4--10
inspection
exterior, 4--3
interior, 4--4
inspection and cleaning
exterior, 4--2
flat panel display, 4--2
interior, 4--2
instrument calibration, 3--1
internal modules, 4--8
inverter board removal, 4--10
I/O board connections, 2--2
K
keypad, 4--8
L
lubrication, 4--3
M
main board functions, 2--2
main board removal, 4--10
manual conventions, ix
manuals, ix
module interconnections, 2--1
P
packing, 4--16
power converter, description, 2--3
power supply, 2--2
power supply removal, 4--9
preventive maintenance, 4--1
probe compensation, 2--3
procedures
flat panel cleaning, 4--2
inspection and cleaning, 4--1–4--5
interior cleaning, 4--5
processor system, description, 2--3
Index
Index- 2 DPO4000 Series Service Manual
R
rear case removal, 4--9
removal procedures, 4--6, 4--8
display module, 4--11
fans, 4--10
front case, 4--10
front panel, 4--11
I/O board, 4--10
inverter board, 4--10
main board, 4--10
power supply, 4--9
rear case, 4--9
replaceable part, definition, ix
T
trigger system, description, 2--2
trim, 4--7
troubleshoot, 4--12
U
user manual, 1--1

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