xx
TBS2000 Series
ZZZ
Digital Storage Oscilloscopes
Service Manual
*P077115000*
077-1150-00
xx
TBS2000 Series
ZZZ
Digital Storage Oscilloscopes
Service Manual
Warning
The servicing instructions ar
only. To avoid personal injury, do not perform any servicing
unless you are qualified to do s
before performing service.
e for use by qualified personnel
o. Refer to all safety summaries
www.tek.com
077-1150-00
Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries
or suppliers, and are protected by national copyright laws and international treaty provisions.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication
supersedes that in all previously published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O . Bo x 50 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............ ................................ .................................. ....... v
Terms in this manual ................... ................................ .................................. ... vii
Symbols and terms on the product......................................................................... viii
Preface .............................................................................................................. ix
Manual conventions ................ ................................ ................................ .......... ix
Operating information
Operating information................................. ................................ ........................... 1-1
Theory of operation
Theory of operation .............................................................................................. 2-1
Power supply .............................. ................................ ................................ ... 2-2
Front End assembly (4 channel models) ..................... ................................ ............. 2-2
Main board ................................................................................................... 2-2
I/O board (4 channel models)............................................................................... 2-3
Front-panel board ............................................................................................ 2-3
ii
Adjustments
Adjustments ....................................................................................................... 3-1
Maintenance
Maintenance....................................................................................................... 4-1
Preventing ESD .............................................................................................. 4-1
Inspection and cleaning .............. ................................ ................................ ....... 4-1
Module removal.............................................................................................. 4-5
Troubleshooting....................... ................................ ................................ ....... 4-5
Troubleshooting procedure ................................................................................. 4-6
Unpacking and repacking instructions .................................................................. 4-10
Replaceable parts list
Replaceable parts list............................................................................................. 5-1
Parts ordering information.................................................................................. 5-1
Using the replaceable parts list............................................................................. 5-2
The replaceable parts list....................... ................................ ............................. 5-3
TBS2000 Series Service Manual i
Table of Contents
List of Figure
Figure 2-1: TBS2000 block diagram (2 channel) .................................. ........................... 2-1
Figure 2-2:
Figure 4-1: Primary troubleshooting procedure flowchart ................................................... 4-7
Figure 4-2: AC Power Supply module troubleshooting..... ................................ ................. 4-8
Figure 4-3: Board isolation troubleshooting flowchart....................................................... 4-9
Figure 5-1: Four channel models; front half.... .................................. ............................. 5-3
Figure 5-2: Four channel models; rear half... .................................. ............................... 5-5
Figure 5-
Figure 5-4: Two channel models; rear half ..... ................................ ............................... 5-9
TBS2000 block diagram (4 channel).................... ................................ ......... 2-1
3: Two channel models; front half ...................... .................................. ........... 5-7
s
ii TBS2000 Series Service Manual
List of Tables
Table 4-1: External inspection checklist....................................................................... 4-3
Table 4- 2 : I
Table 4-3: Most likely board to replace for failed diagnostics ......... ................................ ..... 4-9
Table 5-1: Four-channel model parts: front panel, display, and front chassis .... ......................... 5-4
Table 5-2: Four-channel model parts: inputs, main board, power supply, I/O, rear chassis, rear cover 5-6
Table 5-3: Two channel model parts; front panel, labels, front panel, LCD, chassis . .. . ... ... . .. . ... ... . 5-8
Table 5-4: Two channel model parts; power supply, main board, AC connector/filter, rear cover . . .. 5-10
nternal inspection checklist......................... .................................. ............. 4-4
Table of Contents
TBS2000 Series 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 pe
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 product, it is essential that you follow
generally accepted safety procedures in addition to the safety precautions specified
in this manual.
The product is designed to be used by trained personnel only.
Only qualified personnel who are aware of the hazards involved should remove
the cover for repair, maintenance, or adjustment.
ontains information and warnings that must be followed by the user
rform service on this product, additional information is provided at
To avoid fire or personal
jury
in
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.
personal protective equipment to prevent shock and arc blast injury where
Use
hazardous live conductors are exposed.
Use proper power cord. Use only the power cord specified for this product and
certified for the country of use.
Ground the product. This product is grounded through the grounding conductor
f the power cord. To avoid electric shock, the grounding conductor must be
o
connected to earth ground. Before making connections to the input or output
terminals of the product, make sure that the product is properly grounded.
Do not disable the power cord grounding connection.
Power disconnect. The power cord disconnects the product from the power
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.
iv TBS2000 Series Service Manual
Important safety information
Connect and dis
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 avoi d fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information before making connections to the product. Do not exceed the
Measurement Category (CAT) rating and voltage or current rating of the lowest
rated individual component of a product, probe, or accessory. Use caution when
using 1:1 test leads because the probe tip voltage is directly transm
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.
Avoid exposed circuitry. Do not touch exposed connections and components
when power is present.
connect properly. Do not connect or disconnect probes or test
itted to the
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 m echanical
damage and replace when damaged. Do not use probes or test leads if they are
damaged, if there is exposed metal, or if a wear indicator shows.
Examine the exterior of the product before you use it. Look for cracks or missing
pieces.
Use only specified replacement parts.
Use proper fuse. Use only the fuse type and rating specified for this product.
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.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry. Remove the input signals before you clean
the product.
TBS2000 Series Service Manual v
Important safety information
Probes and test leads
Provide proper
details on installing the product so it has proper ventilation.
Slots and open
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.
Before connecting probes or test leads, connect the power cord from the power
connector to a properly grounded power outlet.
Keep fingers behind the finger guards on the probes.
Remove all probes, test leads and accessories that are not in use.
Use only
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.
ventilation. Refer to the installation instructions in the manual for
ings are provided for ventilation and should never be covered or
correct Measurement Category (CAT), voltage, temperature, altitude,
The maximum floating voltage from the probe reference lead to earth ground
These two voltage ratings depend on the probe and your application. Refer to the
Specifications section of the manual for more information.
WARNING. To prevent ele ctrical shock, do not exceed the maximum measurement
maximum floating voltage for the oscilloscope input BNC connector, probe
or
tip, or probe reference lead.
onnect and disconnect properly. Connect the probe output to the measurement
C
product before connecting the probe to the circuit under test. Connect the
probe reference lead to the circuit under test before connecting the probe input.
Disconnect the probe input and the probe reference lead from the circuit under test
before disconnecting the probe from the measurement product.
Connect and disconnect properly. De-energize the circuit under test before
connecting or disconnecting a current probe.
Connect the probe reference lead to earth ground only.
Do not connect a current probe to any wire that carries voltages above the current
probe voltage rating.
vi TBS2000 Series Service Manual
Important safety information
Inspect the pro
for damage (cuts, tears, or defects in the probe body, access ories, or cable jacket).
Do not use if damaged.
Servicesafetysummary
The Service safety summary section contains additional information required to
safely perform service on the product. Only qualified personnel should perform
service procedures. Read this Service safety summary and the General safety
summary before performing any service procedures.
To avoid electric shock. Do not touch exposed connections.
Do not service alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect power. To avoid electric shock, switch off the product power and
disconnect the power cord from the mains power before removing any covers or
panels, or opening the case for servicing.
Use care when servicing with power on. Dangerous voltages or currents may exist
in th
test leads before removing protective panels, soldering, or replacing components.
be and accessories. Before each use, inspect probe and accessories
is product. Disconnect power, remove battery (if applicable), and disconnect
rms in this manual
Te
Verify safety after repair. Always recheck ground continuity and mains dielectric
strength after performing a repair.
These t erms may appea r in this manual:
WAR N ING. Warning statements identify conditions or practices that could result
n injury or loss of life.
i
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
TBS2000 Series Service Manual vii
Important safety information
Symbols and te
rms on the product
These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read
the marking.
WARNING indicates an injury hazard not immediately accessible as you
read the marking.
CAUTION indicates a hazard to property including the product.
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 m anual.)
The follo
wing symbol(s) may appear on the product:
viii TBS2000 Series Service Manual
Preface
This service manual provides information that you need to troubleshoot,
disassemble, and replace parts on the following Tektronix oscilloscopes:
Manual conventions
Modules
ceable parts
Repla
Model Bandwidth
TBS2072
TBS2102
TBS2074
TBS2104
This manual uses certain conventions that you should become familiar with
before
Throughout this manual, any replaceable component, assembly, or part is referred
to by the term module.
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
mec
parts list.
performing service.
hanical part, such as the I/O port connectors, that is listed in the replaceable
70 MHz 2
100 MHz 2
70 MHz 4
100 MHz 4
Channels
Safety
TBS2000 Series Service Manual ix
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.
Preface
x TBS2000 Series Service Manual
Operating information
Operating information
For information on installing and operating your oscilloscope, refer to the
TBS2000 Series Digital Storage Oscilloscopes User Manual (Tektronix part
number 077-1
from the Tektronix Web site (www.tek.com/downloads).
147-xx English; other languages available), which is downloadable
TBS2000 Series Service Manual 1–1
Operating information
1–2 TBS2000 Series Service Manual
Theory of operation
Theory of operation
This chapter describes the electrical operation of the oscilloscope to the module
level. The block diagrams shows the oscilloscope module interconnections.
Figure 2-1: TBS2000 block diagram (2 channel)
Figure 2-2: TBS2000 block diagram (4 channel)
TBS2000 Series Service Manual 2–1
Theory of operation
Power supply
The Power Supply board converts AC line voltage to +12 V to power all internal
circuits.
Front End assembly (4 channel models)
The Front End assembly begins with the analog signal path and ends with
differential mode channel signals which are passed to the Main board. The analog
inputs, attenuators, and preamps are contained in this assembly.
Main board
The Main boards contain the following functions:
Acquisition syste m
Trigger system
Display system
Processor sys tem
Power subsystem
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, and then into acquisition memory. The analog signal
from each preamplifier is also distributed to a trigger circuit.
The Trigger system digitizes the analog signals from the preamplifiers and
routes the digitized signal to the Trigger circuit. 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).
The Processor system contains an ARM microprocessor that controls the entire
instrument. The processor system also contains FLASH ROM, system RAM, and
interfaces to USB ports and the Ethernet port.
T he M a i n b o a r d co n v e r t s t h e +1 2 V p o w e r t o + 5 V, -5 V, +3 . 3 V, + 2 . 5 V, +2 V,
+1.8 V, +1.5 V, +1.1 V, 1 V, and 0.75 V, used by circuitry throughout the system.
The Front Panel board is powered on at all times when AC power is connected to
the unit.
I/O ports (2 channel
models)
2–2 TBS2000 Series Service Manual
The Main board provides USB ports (Host and Device), an Ethernet port (LAN),
and an Aux Out trigger output connections.
Theory of operation
I/O board (4 ch
annel models)
Front-panel board
The I/O board provides USB ports (Host and Device), an Ethernet port (LAN),
and an Aux Out trigger output connections.
The Front Panel board contains a microprocessor that reads the front-panel buttons
and contro
and controls power to the Main board. The Front Panel board also generates the
probe compensation output signal and c ontrols power to the Main board.
ls, sends this information to the processor system on the Main board,
TBS2000 Series Service Manual 2–3
Theory of operation
2–4 TBS2000 Series Service Manual
Adjustments
Adjustments
There are no customer-performable adjustment procedures (calibrations) for
the TBS2000 Series oscilloscopes. Please return the instrument to Tektronix
if adjustment is required. Calibrations can only be performed at a Tektronix
service center and require the use of traceable test equipment (signal sources and
measuring e
To determine if adjustment is required, use the Performance Verification
procedure
Performance Verification manual (tektronix part number 077-1148-xx), available
at www.tek.com/downloads. Adjustment is also required after instrument repair.
quipment) to verify the performance of the instrument.
in the TBS2000 Series Digital Storage Oscilloscopes Specifications and
TBS2000 Series Service Manual 3–1
Adjustments
3–2 TBS2000 Series Service Manual
Maintenance
Maintenance
This section contains the information needed to do periodic and corrective
maintenance on the oscilloscope, and repackaging instructions for returning the
oscilloscope to Tektronix for service.
Preventing
ESD
Before servicing this product, read the General Safety Summary and the Service
Safety Summary at the front of the manual, and familiarize yourself with the
following
CAUTION. Static discharge can damage any semiconductor component in this
oscilloscope.
When per
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. Trans
3. Disc
4. Do not place anything capable of generating or holding a static charge on the
electrostatic discharge (ESD) information.
forming any service that requires internal access to the oscilloscope,
port and store static-sensitive modules in their static protected containers
or on a metal rail. Label any package that contains static-sensitive boards.
harge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling these modules. Service static-sensitive modules
only at a static-free work station.
work station surface.
5. Handle circuit boards by the edges when possible.
6. Do
7. Avoid handling circuit boards in areas that have a floor or work-surface
not slide the circuit boards over any surface.
overing capable of generating a static charge.
c
Inspection and cleaning
Inspection and cleaning are done as preventive maintenance. Preventive
maintenance, when done regularly, may prevent oscilloscope malfunction and
enhance its reliability.
Preventive maintenance consists of visually inspecting and cleaning the
oscilloscope and using general care when operating it.
TBS2000 Series Service Manual 4–1
Maintenance
General care
Flat panel display cleaning
How often you do
which the oscilloscope is used. A proper time to perform preventive maintenance
is just before oscilloscope adjustment.
The cabinet h
place when operating the oscilloscope.
WARNING. To avoid injury, power off the instrument and disconnect it from line
voltage before performing any procedure that follows.
The display is a soft plastic display and must be treated with care during cleaning.
CAUTION.
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.
Improper cleaning agents or methods can damage the flat panel
maintenance depends on the severity of the environment in
elps keep dust out of the oscilloscope and should normally be in
Exterior cleaning
the flat panel display surface by gently rubbing the display with a
Clean
clean-room wipe (such as Wypall Medium Duty Wipes, #05701, available from
Kimberly-Clark Corporation).
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
eaning, use only enough liquid to dampen the cloth or applicator.
cl
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 might damage the
chassis.
4–2 TBS2000 Series Service Manual
Maintenance
Clean the power
switch using a dampened cleaning towel. Do not spray or wet
the switch directly.
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,
r Tektronix Service Center or representative.
arts, using the following table as a guide. Immediately repair defects
Exterior inspection
consult you
Inspect the external oscilloscope case, display, and controls for damage, wear, and
missing p
that could cause personal injury or lead to further damage to the oscilloscope.
Table 4-
Item Inspect for Repair action
Cabinet, front panel, and cover Cracks, scratches, deformations, damaged
Front-panel knobs Missing, damaged, or loose knobs.
Conne
Carrying handle, and cabinet feet Correct operation. Repair or replace defective module.
Acce
1: External inspection checklist
ctors
ssories
hardware.
Broken shells, cracked insulation, and
med contacts. Dirt in connectors.
defor
Missing items or parts of items, bent pins,
broken or frayed cables, and damaged
nectors.
con
Repair or replace defective module.
Repair or replace missing or defective
.
knobs
r or replace defective modules. Clear
Repai
or wash out dirt.
ir or replace damaged or missing
Repa
items, frayed cables, and defective modules.
Interior inspection
access the inside of the oscilloscope for cleaning and inspection, refer to the
To
exploded view diagrams. (See page 5-1, Replaceable parts list.)
nspect the internal portions of the oscilloscope for damage and wear, using the
I
following table as a guide. Repair any defects immediately.
If any circuit board is repaired or replaced, adjustment is required. (See page 3-1,
Adjustments.)
CAUTION. To prevent damage from electrical arcing, make sure that circuit
boards and components are dry before applying power to the oscilloscope.
TBS2000 Series Service Manual 4–3
Maintenance
Table 4-2: Inte
Item Inspect for Repair action
Circuit boards
Resistors Burned, cracked, broken, blistered condition. Remove and replace damaged circuit board.
Solder connections Cold solder or rosin joints.
Capacitors Damaged or leaking cases. Corroded solder
Wiring and cables Loose plugs or connectors. Burned, broken,
Chassis Dents, deformations, and damaged
rnal inspection checklist
Interior cleaning
Loose, broken
connections. Burned circuit boards. Burned,
broken, or cracked circuit-run plating.
on leads or terminals.
or frayed wiring.
hardware
1. Blow off
, or corroded solder
.
dust with dry, low-pressure, deionized air (approximately 9 psi).
Remove and rep
Resolder joi
alcohol.
Remove and r
Firmly seat connectors. Repair or replace
modules with defective wires or cables.
Straighten, repair, or replace defective
hardware
lace damaged circuit board.
nt and clean with isopropyl
eplace damaged circuit board.
.
2. Remove any remaining dust with a lint-free cloth dampened in isopropyl
l (75% solution) and rinsed with warm deionized water. (A
alcoho
cotton-tipped applicator is useful for cleaning in narrow spaces and on circuit
boards.)
Lubrication
NOTE. If, after performing steps 1 and 2, a module is clean upon inspection,
skip the following steps.
If there is still dust o r dirt on the module, the oscilloscope may be spray washed
using a solution of 75% isopropyl alcohol by following these steps:
a. Spray wash dirty parts with isopropyl alcohol and wait 60 seconds for the
majority of the alcohol to evaporate.
b. Use hot (120 °F to 140 °F) deionized water to thoroughly rinse them.
c. Dry all parts with low-pressure, deionized air.
ry all components and assemblies in an oven or drying compartment
d.D
using low-temperature (125 °F to 150 °F) circulating air.
There is no periodic lubrication required for this oscilloscope.
4–4 TBS2000 Series Service Manual
Module removal
Maintenance
WAR N ING. Only qualified personnel should perform se rvice procedures. Before
performing th
Summary and Service Safety Summary located at the beginning of this manual.
Also, to prevent possible injury to service personne l or damage to electrical
components, read Preventing ESD. (See page 4-1, Preventing ESD.)
To remove an assembly, refer to the exploded view diagrams and parts lists. (See
page 5-1, Replaceable parts list.)
If you are disassembling the instrument for cleaning, refer to the Inspection and
Cleaning procedure for instructions. (See page 4-1, Inspection and cleaning .)
WAR N ING. Disconnect the power cord from the line voltage source. Failure to do
so could cause serious injury or death.
is or any other procedure in this manual, read the General Safety
Required equipment
To rem
ove modules
Troubleshooting
You will need Torx drivers with a T-15 and T-10 Torx tip to remove instrument
screws.
To remove any of the instrument modules or assemblies, you must first
remove the rear cover and separate the front chassis from the rear chassis.
To remove the Front Panel board assembly or the front panel case assembly,
you must first remove the Main board assembly and the front chassis.
To remove or install the keypad, do not touch the switch contacts with your
fingers. The oils on your fingers will degrade or damage the switch contacts.
To help prevent damage to the keypad, use cotton gloves when removing or
stalling the keyboard pad.
in
This section contains information and procedures to help you isolate a defective
module in the TBS2000 Series oscilloscopes.
WAR N ING. Before performing this or any other procedure in this manual, read the
General Safety Summary and Service Safety Summary found at the beginning of
this manual, and, to prevent possible injury to service personnel or damage to
electrical components, read Preventing ESD. (See page 4-1, Preventing ESD.)
TBS2000 Series Service Manual 4–5
Maintenance
Adjustment after repair
Required tools and
equipment
Instrument adj
the Front End assembly (4 channel models). Refer to the Adjustments section for
information about the adjustment. (See page 3-1, Adjustments.)
You need the f
Tools and equ
DMM 3.5 digits or above
Troubleshooting procedure
Use the fol
the Primary troubleshooting flowchart.
WARNING. Before removing the cabinet, disconnect the power cord from the line
voltage source. Failure to do so could cause serious injury or death.
CAUTION. When you operate the four-channel instrument with the cabinet
removed, the system fan will not cool the instrument. You must p rovide an external
fan to cool the interior of the instrument. Failure to do so could cause instrument
damage.
ustment is required after you replace the Main board (all models) or
ollowing equipment to troubleshoot the instrument.
ipment
lowing flowcharts to troubleshoot an instrument failure. Begin with
Example
4–6 TBS2000 Series Service Manual
Maintenance
Primary troubl
eshooting
flowchart
Figure 4-1: Primary troubleshooting procedure flowchart
TBS2000 Series Service Manual 4–7
Maintenance
AC Power Supply
module
troubleshooting flowchart
Figure 4-2: AC Power Supply module troubleshooting
NOTE. Images show the power supply cable disconnected from the main board, to
better show the test point locations. The power cable from the Power Supply must
be connected to the Main board to test the +12 VDC value.
4–8 TBS2000 Series Service Manual
Maintenance
Board isolatio
troubleshooting flowchart
n
Figure 4-3: Board isolation troubleshooting flowchart
Table 4-3: Most likely board to replace for failed diagnostics
Failed test Most likely board
CPU
Display Main
sition
Acqui
ROM
t Panel
Fron
I/O Mai
Main
Main (or Front End board on 4-channel models)
Main
t Panel or Main
Fron
n (or I/O board on 4-channel models)
TBS2000 Series Service Manual 4–9
Maintenance
Unpacking and repacking instructions
This section contains the information needed to unpack the oscilloscope and
repack it for shipment or storage.
Unpacking
Repacking
The oscilloscope and its standard accessories are c arefully packed at the factory in
a shipping carton. If, upon receipt, damage to the shipping carton is evident, tell
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:
The owner’s address
Name and phone number of a contact person
Type and serial number of the instrument
on for returning
Reas
A complete description of the service required
torage
S
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. See www.tektronix.com/service
to find a service center near you.
The oscilloscope should be stored in a clean, dry environment. The following
environmental characteristics apply for both shipping and storage:
Temperaturerange: -4°Fto+140°F(-20°Cto+60°C)
Altitude: To 39,370 feet (12,000 m )
See the Tektronix TBS2000 Series Digital Storage Oscilloscopes Specifications
and Performance Verification Technical Reference (Tektronix part number
077-1148-xx) for a complete listing of the environmental specifications.
4–10 TBS2000 Series Service Manual
Replaceable parts list
Replaceable parts list
This chapter contains a list of the replaceable modules for these oscilloscopes.
Use this list to identify and order replacement parts.
Parts ordering information
Replacement parts are available through your local Tektronix field office or
representative.
Changes to Tektronix products are sometimes made to accommodate improved
components as they become available and to give you the benefit of the latest
improvements. Therefore, when ordering parts, it is important to include the
following information in your order:
Part number (see Part Number Revision Level below)
Instrument type or model number
Instrument serial number
Instrument modification number, if applicable
If you order a part that is replaced with a different or improved part, your local
Tektronix field office or representative will contact you concerning any change in
part number.
Part number revision level
Module servicing
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.
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.
Modules can be serviced by selecting one of the next 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
remanufactured module. These modules cost significantly less than new modules
TBS2000 Series Service Manual 5–1
Replaceable parts list
and meet the sam
exchange program, call 1-800-833-9200, extension 2.
Module repair and return. You may ship your module to us for repair, after which
we will return it to you.
New modules
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 n
1
2Tektr
3 and 4
5
6
Figure
Number
Number
Serial Number Column three indicates the serial number at which the part was first effective. Column four
Qty This
Nam
ame
& Index
onix Part
e & Description
tion
Descrip
n this section are referenced by figure and index numbers to the exploded view
Items i
illustrations.
Use this part number when ordering replacement parts from Tektronix.
indicates the serial number at which the part was discontinued. No entries indicates the
is good for all serial numbers.
part
indicates the quantity of parts used.
tem name is s eparated from the description by a colon (:). Because of space limitations,
An i
an item name may sometimes appear as incomplete. Use the U.S. Federal Catalog handbook
H6-1 for further item name identification.
efactoryspecifications. For more information about the module
. You may purchase replacement modules similarly as other
Abbreviations
Exploded views
Abbreviations conform to American National Standard ANSI Y1.1-1972.
The illustrations in this section show the module-level exploded views of the
scilloscopes. Each exploded view is indexed by the numbers in the figure. The
o
table of index numbers and part numbers corresponding to a picture are in the
table immediately proceeding the illustration.
5–2 TBS2000 Series Service Manual
The replaceable parts list
Replaceable parts list
Figure 5-1: Four channel models; front half
TBS2000 Series Service Manual 5–3
Replaceable parts list
Table 5-1: Four
Fig. &
index
number
5-1-1
-2 202-0522-xx 1
-3 260-3035-xx 1
-4 878-1179-xx 1
-5
-6 211-1273-xx 22
-7
-8 407-5760-xx 1
-9 441-2848-xx 1
-10 211-1272-xx 43
-11 131-6643-xx 6
-12 174-5411-xx 1
-13 174-6623-xx 1
-14 878-1172-xx 1
-15 260-3035-xx 1
-16 174-6696-xx 1
-17
-18 366-0935-xx
-19 366-0934-xx 6
-20 366-0936-xx 1
-21 335-3429-xx 1
1
Quantity indicated is for the entire instrument, not necessarily for each image.
2
Tightening torque for 211-1272-xx and 211-1273-xx is 0.9 N*M
-channel model parts: front panel, display, and front chassis
Tektronix
part
number
335-3552-xx 1
335-3553-xx 1
131-8139-xx 8
850-0312-xx 1
335-3428-xx 1
335-3728-xx 1
335-3744-xx 1
335-3745-xx 1
335-3746-xx 1
335-3747-xx 1
335-3748-xx 1
335-3749-xx 1
335-3750-xx 1
335-3751-xx 1
335-3752-xx 1
Serial
no.
effective
Serial no.
discont’d Qty
5
1
2
2
Name & description
LABEL, BLACK FRAME-B4 9 INCH DISPLAY, TBS2074, SAFETY CONTROLLED
LABEL, BLACK FRAME-B4 9 INCH DISPLAY, TBS2104, SAFETY CONTROLLED
FRONT CASE
SWITCH, KEYPAD, ELASTOMERIC POWER; SAFETY CONTROLLED
CIRCUIT BOARD ASSY; POWER SWITCH BOARD
CONTACT, SPRING; FRONT PANEL ELEC
SCREW, PT; K35-1.57, PAN HEAD, STL, ZNPL, T-15
FRAME ASSEMBLY; DISPLAY; TBS2K
BRACKET, DISPLAY MOUNT
CHASSIS, FRONT
SCREW, MACHINE; 6-32 X 0.250, PNH, STL, ZNPL,T-15 TORX DR
CONTACT, ELECTRICAL
CABLE EXTENSION, USB-HOST
CABLE, DISPLAY, FFC, 50POS
PCB, FRONT-PANEL
SWITCH, KEYPAD, ASSEMBLY FRONT
CABLE CONNECTION, FRONT-PANEL & POWER SWITCH
MARKER, IDENTIFICATION LABEL, SAFETY CONTROLLED
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, KOREAN
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, FRENCH
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, RUSSIAN
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, ITALIAN
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, GERMAN
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, SPANISH
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, JAPANESE
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, PORTUGUESE
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, SIMPLE CHINESE
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, STANDARD CHINESE
ASSEMBLY, KNOB; .685 DIAMETER
ASSEMBLY, KNOB; .470 DIAMETER
ASSEMBLY, KNOB; .925 DIAMETER
MARKER, IDENTIFICATION LABEL, SAFETY CONTROLLED
5–4 TBS2000 Series Service Manual
Replaceable parts list
Figure 5-2: Four channel models; rear half
TBS2000 Series Service Manual 5–5
Replaceable parts list
Table 5-2: Four
Fig. &
index
number
5-2-1 174-6877-xx 1
-2 211-1272-xx 43
-3 119-8488-xx 1
-4 174-6699-xx 1
-5
-6 174-6286-xx 1
-7
-8 441-2847-xx 1
-9 119-7086-xx 1
-10 211-0718-xx 2
-11 202-0544-xx 1
-12 367-0598-xx 1
-13 214-5148-xx 2
-14 348-1909-xx 2
-15 348-2222-xx 2
-16 335-3427-xx 1
-17 348-2082-xx 4
-18 119-8751-xx 1
-19 878-1137-xx 1
-20 870-1169-xx 1
-21 129-1693-xx 1
-22 878-1139-xx 1
-23 210-1039-xx 4
-24 220-0265-xx 4
-N/A
1
antity indicated is for the entire instrument, not necessarily for items in each image.
Qu
2
Tightening torque for 211-1272-xx and 211-1273-xx is 0.9 N*M.
3
Tightening torque for 129-1693-xx is 1.13 N*M.
4
Tightening torque for 220-0265-xx is 4.52N*M, ±0.23 N*M.
5
Tektronix option TEKUSBWIFI.
-channel model parts: inputs, main board, power supply, I/O, rear chassis, rear cover
Serial
Tektronix
part number
146-0148-xx 1
131-6643-xx 2
119-8771-xx 1
no.
effective
Serial no.
discont’d Qty
1
2
3
4
5
Name & description
CABLE POWER SUPPLY WITH MAIN BOARD, SAFETY CONTROLLED
SCREW, MACHINE; 6-32 X 0.250, PNH, STL, ZNPL, T-15 TORX DR
POWER SUPPLY; AC-DC, INTERNAL; 90-264 VAC 47-63 HZ, 103-127 VAC 360-440 HZ IN;
+12V 5A4, 65W OUT; SAFETY CONTROLLED
CABLE CONNECTION, FRONT-PANEL & MAIN BOARD
BATTERY, DRY: 3 VOLT, 150MAH, LITHIUM, LEADED BUTTON CELL, SAFETY
CONTROLLED
CABLE ASSEMBLY (LINE INPUT), SAFETY CONTROLLED
CONTACT, ELECTRICAL
CHASSIS; REAR, SAFETY CONTROLLED
FILTER, EMI; AC LINE CONNECTOR/INPUT FILTER; 6.0A, 120-250VAC, DC-400 HZ
SCREW, MACHINE; 6-32 X 0.312, FLH100, STEEL, ZINC FINISH, T-10 TORX DR
CASE, REAR, SAFETY CONTROLLED
HANDLE, CARRYING OVERMOLDED, SAFETY CONTROLLED
SPRING FRONT FOOT
FOOT REAR
FOOT, FRONT CABINET, HINGED
LABEL, IO (REAR)
GROMMET, FAN MOUNT, NOISE DAMPING
FAN, TUBE AXIAL (92MM, DC, ASSEMBLY)
CIRCUIT BOARD (IO BOARD)
CIRCUIT BOARD MAIN BOARD
SCREW, JACK, 433H, 6-32 INTERNAL, 8-32 EXTERNAL
CIRCUIT BOARD ASSY, ANALOG FRONT END BOARD,
WASHER, LOCK INTERNAL TOOTH
NUT, PLAIN, HEX; 0.5-28 X 0.625 HEX, BRS, NKL PL
WIFI USB DONGLE FOR TBS
5–6 TBS2000 Series Service Manual
Replaceable parts list
Figure 5-3: Two channel models; front half
TBS2000 Series Service Manual 5–7
Replaceable parts list
Table 5-3: Two c
Fig. &
index
number
5-3-1
-2 202-0527-xx 1
-3 850-0312-xx 1
-4 407-5760-xx 1
-5
-6 211-1273-xx 22
-7
-8 174-6941-xx 1
-9 174-5411-xx 1
-10 131-8139-xx
-11 878-1161-xx 1
-12 260-3038-xx 1
-13
-14 366-0935-xx 3
-15 366-0934-xx 4
-16 366-0936-xx 1
1
Quantity indicated is for the entire instrument, not necessarily for items in each image.
2
Tightening torque for 211-1272-xx and 211-1273-xx is 0.9 N*M.
hannel model parts; front panel, labels, front panel, LCD, chassis
Tektronix
part
number
335-3550-xx 1
335-3546-xx 1
441-2844-xx 1
211-1272-xx 43
335-3473-xx 1
335-3729-xx 1
335-3730-xx 1
335-3731-xx 1
335-3732-xx 1
335-3733-xx 1
335-3734-xx 1
335-3735-xx 1
335-3736-xx 1
335-3737-xx 1
335-3738-xx 1
Serial
no.
effective
Serial no.
discont’d Qty
7
1
Name & description
LABEL, BLACK FRAME-B2 9 INCH DISPLAY, TBS2102, SAFETY CONTROLLED
LABEL, BLACK FRAME-B2 9 INCH DISPLAY, TBS2072, SAFETY CONTROLLED
B2 FRONT CASE SAFETY CONTROLLED
FRAME ASSEMBLY; DISPLAY; TBS2K
BRACKET, DISPLAY MOUNT
CHASSIS, MAIN, SAFETY CONTROLLED
2
2
SCREW,PT; K35-1.57, PAN HEAD, STL, ZNPL, T-15
SCREW, MACHINE; 6-32 X 0.250, PNH, STL, ZNPL, T-15 TORX DR
CABLE, DISPLAY, FFC, 50POS
CABLE EXTENSION, USB-HOST
CONTACT, SPRING; FRONT PANEL ELEC
FRONT PANEL B2 BOARD
SWITCH, KEYPAD, ELASTOMERIC FRONT PANEL
MARKER, IDENTIFICATION LABEL FRONT PANEL, 2CH, SA, SAFETY CONTROLLED
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, FRENCH
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, RUSSIAN
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, ITALIAN
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, GERMANY
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, SPANISH
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, JAPANESE
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, PORTUGUESE
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, SIMPLE CHINESE
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, STANDARD CHINESE
MARKER, IDENTIFICATION FRONT PANEL OVERLAY, KOREAN
ASSEMBLY, KNOB; .685 IN DIAMETER
ASSEMBLY, KNOB; .470 IN DIAMETER
ASSEMBLY, KNOB; .925 IN DIAMETER
5–8 TBS2000 Series Service Manual
Replaceable parts list
Figure 5-4: Two channel models; rear half
TBS2000 Series Service Manual 5–9
Replaceable parts list
Table 5-4: Two c
Fig. &
index
number
5-4-1 1198-488-xx 1
-2 211-1272-xx 43
-3 174-6877-xx 1
-4 174-6920-xx 1
-5
-6 119-7086-xx 1
-7
-8 202-0528-xx 1
-9 367-0598-xx 1
-10 348-1909-xx 2
-11 348-2209-xx 2
-12 214-5148-xx 2
-13 131-6643-xx 4
-14 220-0265-xx 3
-15 210-1039-xx 3
-16 407-5915-xx 1
-17 211-1273-xx 6
-18 870-1175-xx 1
-19 174-6699-xx 1
-20 253-0571-xx 1
-21 253-0570-xx 1
-22 146-0148-xx 1
-N/A
1
ntity indicated is for the entire instrument , not necessarily for each image.
Qua
2
Tightening torque for 211-1272-xx and 211-1273-xx is 0.9 N*M.
3
Tightening torque for 220-0265-xx is 4.52N*M, ±0.23 N*M.
4
Tektronix option TEKUSBWIFI.
hannel model parts; power s upply, main board, AC c onnector/filter, rear cover
Serial
Tektronix
part number
407-5916-xx 1
211-0718-xx 2
119-8771-xx 1
no.
effective
Serial no.
discont’d Qty
1
Name & description
POWER SUPPLY; AC-DC, INTERNAL; 90-264 VAC 47-63 HZ, 103-127 VAC, 360-440 HZ
IN; +12V 5A4, 65W OUT; SAFETY CONTROLLED
2
3
4
SCREW, MACHINE; 6-32 X 0.250, PNH, STL, ZNPL, T-15 TORX DR
CABLE POWER SUPPLY WITH MAIN BOARD, SAFETY CONTROLLED
CABLE ASSEMBLY (LINE INPUT), SAFETY CONTROLLED
BRACKET, FILTER, SAFETY CONTROLLED
FILTER, EMI; AC LINE CONNECTOR/INPUT FILTER; 6.0A, 120-250 VAC, DC-400 HZ
SCREW, MACHINE; 6-32 X 0.312, FLH100, STEEL, ZINC FINISH, T-10 TORX DR
CASE, REAR, SAFETY CONTROLLED
HANDLE, CARRYING OVERMOLDED, SAFETY CONTROLLED
FOOT REAR; SAFETY CONTROLLED
FOOT, FRONT CABINET, HINGED, SAFETY CONTROLLED
SPRING FRONT FOOT
CONTACT, ELECTRICAL
NUT, PLAIN, HEX; 0.5-28 X 0.625 HEX, BRS, NKL PL
WASHER, LOCK INTERNAL TOOTH
BRACKET, REAR BNC IN MAIN BOARD
SCREW, PT; K35-1.57, PAN HEAD, STL, ZNPL, T-15
CIRCUIT BOARD ASSY; MAIN B2 BOARD
CABLE CONNECTION, FRONT- PANEL & MAIN BOARD
THERMAL INTERFACE MATERIAL SQUARE, 27X27MM
THERMAL INTERFACE MATERIAL SQUARE, 15X15MM
BATTERY, DRY: 3 VOLT, 150MAH, LITHIUM, LEADED BUTTON CELL, SAFETY
CONTROLLED
WIFI USB DONGLE FOR TBS
5–10 TBS2000 Series Service Manual
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