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. Box 5 0 0
Beaverto
USA
For product information, sales, service, and technical support:
n, OR 97077
In North America, call 1-800-833-9200.
Worl dwid e, visi t www.tektronix.com to find contacts in your area.
Table of Contents
Important safety information ............... ................................ ................................ ......iii
General safety summary .....................................................................................iii
Service safety summary........................ ................................ ...............................v
Terms in this manual ............... ................................ ................................ ..........vi
Symbols and terms on the product ..........................................................................vi
This manual contains information and warnings that must be followed by the user
for safe operation and to keep the product in a safe condition.
To safely perform service on this product, additional information is p rovided at
the end of this section. (See page v, Service safety summary.)
General safety summary
Use the product only as specified. Revie
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.
Before use, always check the product with a known source to be sure it is
operating correctly.
This product is not intended for detection of hazardous voltages.
Use personal protective equipment to prevent shock and arc blast injury where
hazardous live conductors are exposed.
While using this product, you may need to access other parts of a larger system.
Read the safety sections of the other component manuals for warnings and
cautions related to operating the system.
w the following safety precautions to
When incorporating this equipment into a system, the safety of that system is the
responsibility of the assembler of the system.
To avoid fire or personal
injury
SPECMONB Series Service Manualiii
Use proper power cord. Use only the power cord specified for this product and
certified for the country of use.
Do not use the provided power cord for other products.
Ground the product. This product is grounded through the grounding conductor
of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, make sure that the product is properly grounded.
Do not disable the power cord grounding connection.
Important safety information
Power disconne
source. See instructions for the location. Do not position the equipment so that
it is difficult to operate the power cord; it must remain accessible to the u ser at
all times to allow for quick disconnection if needed.
Connect and disconnect properly. Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
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.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating o f that terminal.
Do not float the common terminal above the rated voltage for that terminal.
The measuring terminals on this product are not rated for connection to mains or
Category II, III, or IV circuits.
Do not operate without covers. Do not operate this product with covers or panels
removed, or with the ca
Avoid exposed circuitry. Do not touch exposed connections and components
when powe r is p resent.
ct. The power cord disconnects the product from the power
se open. Hazardous voltage exposure is possible.
Do not operate with suspected failures. If you suspect that ther
product, have it inspected by qualified service personnel.
Disable the product if it is damaged. Do not use the product if it is damaged
or operates incorrectly. If in doubt about safety of the product, turn it off and
disconnect the power cord. Clearly mark the product to prevent its further
operation.
Before use, inspect voltage probes, test leads, and accessories for mechanical
damage and replace when dama
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 o r missing
pieces.
Use only specified replacement parts.
Use proper fuse. Useonlythefusetypeandratingspecified for this product.
Wear eye protection. Wear eye protection if exposure to high-intensity rays or
laser radiation exists.
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.
ged. Do not use probes or test leads if they are
e is damage to this
ivSPECMONB Series Service Manual
Important safety information
Do not operate i
Keep product surfaces clean and dry. Remove the input signals before you clean
the product.
Provide proper ventilation. Refer to the installation instructions in the manual for
details on installing the product so it has proper ventilation.
Slots and openings are provided for ventilation and should never be covered or
otherwise obstructed. Do not push objects into any of the openings.
Provide a safe working environment. Always place the product in a location
convenient for viewing the display and indicators.
Avoid improper or prolonged use of keyboards, pointers, and button pads.
Improper or prolonged keyboard or pointer use may result in serious injury.
Be sure your work area meets applicable ergonomic standards. Consult w ith an
ergonomics professional to avoid stress injuries.
Use care when lifting and carrying the product. This product is provided with
handles for lifting and carrying.
Use only the Tektronix rackmount hardware specified for this product.
n an explosive atmosphere.
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 safetysummary 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 unles
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 this product. Disconnect power, remove battery (if applicable), and disconnect
test leads before removing protective panels, soldering, or replacing components.
Verify safety after repair. Always recheck ground continuity and mains dielectric
strength after performing a repair.
s another person capable of rendering first aid and resuscitation is
SPECMONB Series Service Manualv
Important safety information
Termsinthismanual
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Symbols and terms on the product
These ter
The following symbol(s) may appear on the product:
ms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read
the mark
WARNING indicates an injury hazard not immediately accessible as you
read th
CAUTION indicates a hazard to property including the product.
ing.
e marking.
When this symbol is marked on the product, be sure to consult the manual
to find out the nature of the potential hazards and any actions which have to
betakentoavoidthem. (Thissymbolmayalsobeusedtorefertheuserto
ratings in the manual.)
viSPECMONB Series Service Manual
Preface
Manual content
Manual conventions
This is the service manual for the SPECMONB Series Real-Time Signal
Analyzers.
This manual contains information related to servicing an SPECMONB Series
Real-Time
the instrument, or for a list of instrument specifications, refer to the appropriate
user document. (See page viii, Related documentation.)
Be sure to read the introductions to all procedures. These introductions provide
important information needed to perform the service correctly, safely, and
efficiently.
This manual uses certain conventions that you should become familiar with
before attempting service.
Signal Analyzer. For information related to installing and operating
Module
Plug-in module
Replaceable parts
Safety
The term module refers to a collection of items that are replaceable as a unit. A
module may contain electrical and mechanical assemblies, circuit boards, and
interconnecting cables.
The term Plug-in module refers to the units that plug into the Main digital
interface board.
This manual refers to any field-replaceable assembly or mechanical part by its
name or generically as a replaceable part. In general, a replaceable part is any
circuit board or assembly that is listed in the Replaceable Parts section.
Symbols and terms related to safety appear in the General Safety Summary found
at the beginning of this manual. Be sure to read both the General Safety Summary
and Service Safety Summary before performing any service to this instrument.
SPECMONB Series Service Manualvii
Preface
Related documentation
The following related English user documents are available if you need more
information about operating the instrument. These documents can be downloaded
from the Tektronix Web site (www.tektronix.com/manuals).
SPECMONB Series Real-Time Signal Analyzer Quick Start User Manual.
This document provides the basic information you need to install and operate
the instrument. The document includes a listing of the available instrument
options an
SPECMONB Series Real-Time Signal Analyzer Series Specifications and
Performa
contains the following technical information about the instrument:
Electri
d accessories.
nce Verification Technical Reference (English). This document
cal and physical specifications, including a list of certifications
and compliances.
A perfor
against guaranteed specifications.
SPECMO
(English). Describes the GPIB instrument programming commands and
interface.
SPECMONB Series Real-Time Signal Analyzer Declassification and Security
Instructions (English). Provides instruction on how customers with data
security concerns can sanitize or remove memory devices from the instrument.
mance verification procedure to check instrument performance
NB Series Real-Time Signal Analyzer Programmer Manual
viiiSPECMONB Series Service Manual
Theory of operation
This section provides a basic description of the Real-Time Signal Analyzer (RSA)
operation. Refer to the following block diagram of the instrument while reading
through this
section.
Figure 1: Block diagram
SPECMONB Series Service Manual1
Theory of operation
General
A processor system controls the instrument. The instrument features an XGA
resolution flat-panel display, a transparent touch-screen, and a front-panel with
direct acces
or other pointing device, and/or a keyboard.
s to common features. You can also use the instrument with a mouse
The instrum
Signal path and processing
RF signal path
Acquisition system
Processor system
An RF sign
The RF signal path consists of an attenuator, optional preamplifier, 1st converter,
and 2nd c
replica of a portion of the input signal range to an intermediate frequency (IF)
which can be sampled by a high-dynamic-range A/D converter.
The processor system controls the RF signal path.
The acquisition system samples the IF signal and converts it to digital signals.
These
direct display or by measurement applications to provide signal quality metrics
to the user. T he acquisition data processing is performed by one of several
field-programmable gate arrays (FPGAs) under control of the processor. The
processor performs m easurement applications.
The processor system consists of a COM Express PCI-based processor board and
a Digital interface board that connects the processor to the acquisition board.
ent uses the Microsoft Windows 7 operating system.
al enters the instrument through a direct N-type coaxial connection.
onverter. The purpose of the RF signal path is to translate a b and-limited
digital signals are then filtered numerically and processed either for
Trigger inputs
2SPECMONB Series Service Manual
There are two coaxial trigger inputs. One is on the front panel below the display
and the other is on the rear panel. Both trigger inputs connect directly to the
Digital interface board. Trigger signals are processed by an FPGA on the Digital
interface board. The information from the trigger system is combined with
acquisition data by the processor system.
The Trigger Out signal is a coaxial connection on the front panel below the
display. The trigger out signal comes from the Acquisition Control FPGA,
through the Digital interface board.
Display panel
Theory of operation
Waveforms, spectral traces, measurement results, and control menus are displayed
on a 10.4 inch, color, active-matrix LCD display with touch panel.
Display system
Front panel
Rear
panel
Touch panel
The display system consists of a display adapter board. The display adapter board
sends text and waveform information to the display panel.
The displa
y adapter board sends information from the touch panel to the processor.
The touch panel is listed as a USB HID device in the Window Device Manager
tool.
The processor system detects changes in the front-panel switches and encoder. The
processor also turns the LEDs on and off. Communication between the processor
system and the front panel is performed over an internal USB connection.
The ON/STBY switch passes through the display adapter board, the PC carrier
board, the digital interface board, and to the PC board.
The removable HDD (hard disk drive) communicates over a SATA connection
directly to the processor system.
The following table describes the rear panel connectors.
Table 1: Rear panel connectors
Input or
Name
Reference In
Reference
Out
LAN
USBInput/OutputUSBTwo USB 2.0 connectors
KeyboardInput
VGAOutputD-Sub
SerialInput/OutputD-SubSerial communications port (COM1) to
Trigger InInput
Output
Input
OutputBNC10 MHz output or loop-through of user
Input/Output
Connector
typeDescription
BNCExternal time-base reference. See data
sheet for signal quality requirements.
Reference In signal
RJ-45
PS/2Keyboard-only PS/2 connector
BNCTTL Gate/trigger input signal
10/100/1000baseT Ethernet connector
External monitor connector
processor system
SPECMONB Series Service Manual3
Theory of operation
Table 1: Rear panel connectors (cont.)
Power supply
Input or
Name
Line In (blue)
MIC In (pink)
Headphone
+28 VDCOutputBNC
GPIBInput/Output
Zero-span
Output
Input3.5 mm
Input3.5 mm
Output
OutputBNC
Connector
typeDescription
Audio line input (disabled)
mono
Audio input signal (microphone)
mono
3.5 mm
stereo
IEEE-488
External headphone connection
Noise source drive power
General Purpose Interface Bus
Zero-span output connector
The Power conversion board provides instrument power. The Power conversion
board consists of several switching supplies that translate and balance the power
taken from the power supply module.
Power is distributed from the Power conversion board to both the RF Deck and
the Digital interface board.
The ON/STBY switch, located on the front panel, controls all of the power to the
instrument except for the part of the circuitry in the standby power supply.
Fans
Several fans p rovide cooling to the instrument:
Three fans are located in the RF Deck and are controlled by the RF Interface.
Two fans provide cooling for the Digital Deck o f the instrument.
The power supply module has an internal fan.
The COM Express PC board has a fan that is controlled by the COM Express
PC board.
The optional DPSA board contains a fan.
4SPECMONB Series Service Manual
Adjustment procedure
There are no physical user adjustment procedures for the instruments. However,
you can run alignments from the product application.
Running alignments
Alignments are adjustment procedures run by the instrument using internal
reference signals and measurements, and do not require any external equipment or
connections.
There are two settings for Alignments:
Automatically align as needed (Auto mode)
Run alignments only when the Align Now button is pressed
If Automatically align as needed is selected, alignments run whenever the
Signal Analyzer detects a sufficient change in ambient conditions to warrant an
alignment.
If Run alignments only when “Align Now” button is pressed is selected,
the Signal Analyzer never runs an alignment unless you manually initiate an
alignment using the Align Now button.
Alignment status
Initiating an alignment
NOTE. There are a few critical adjustments that must run occasionally even if
matically align as needed is not enabled.
Auto
The instrument displays a message on screen when it needs to run an alignment. If
essage is displayed, you can assume that the instrument is properly aligned.
no m
To initiate an alignment:
1. Select Setup > Alignments.
2. Click the Align Now button.
The instrument runs an alignment procedure. It displays status messages as the
alignment procedure is running. If the instrument fails the alignment procedure,
the it displays an error message. If the instrument fails an alignment, run
Diagnostics (Tools > Diagnostics) to determine why the alignment failed.
NOTE. While an alignment is running, both the IF and IQ outputs are disabled.
SPECMONB Series Service Manual5
Adjustment procedure
Alignments during
warm-up
Alignments during normal
operation
Alignments are not
ations
calibr
Alignments are
oscillator alignments); the instrument uses default alignment values (if Auto mode
is selected).
NOTE. Instrument performance is not warranted during the specified 20 minute
warm-up period.
Once the instrument reaches operating temperature, a full alignment is run every
two hours (for up to two minutes). Alignments can run more frequently if the
operating temperature changes. If an alignment becomes necessary during a
measurement cycle (if Auto mode is selected), the measurement is aborted and
an alignm
measurement cycle restarts.
Alignme
reference signals and measurements. Calibrations can only be performed at a
Tektronix service center and require the use of traceable test equipment (signal
sources and measuring equipment) to verify the performance of the instrument.
nts are adjustment procedures run by the instrument using internal
not run during the 20 minute warm-up period (except for RF
ent procedure is run. Once an alignment procedure is completed, the
6SPECMONB Series Service Manual
Maintenance
Preventing ESD
This section contains the information needed to do periodic and corrective
maintenance on the instrument.
Before servicing this product, read the Safety summary at the front of the manual
and the ESD information below.
CAUTION. Static discharge can d amage any semiconductor component in this
instrumen
When performing any service that requires internal access to the instrument,
adhere to the following precautions to avoid damaging internal modules and their
components due to electrostatic discharge (ESD).
t.
Minimize handling of static-sensitive circuit boards and components.
Transport and store static-sensitive modules in their static protected containers
or on a metal rail. Label any package that contains static-sensitive boards.
Inspection and cleaning
Discharge the static voltage from your body by w earing a grounded antistatic
wrist strap while handling these modules. Perform service of static-sensitive
modules only at a static-free work station.
Do not allow anything capable of generating or holding a static charge on the
work station surface.
Handle circuit boards by the edges when possible.
Do not slide the circuit boards over any surface.
Avoid handling circuit boards in areas that have a floororwork-surface
covering capable of generating a static charge.
This section describes how to inspect for dirt and damage. It also describes how
to clean the exterior and interior of the instrument. Inspection and cleaning are
done as preventive maintenance. Preventive maintenance, when done regularly,
may pre
Preventive maintenance consists of visually inspecting and cleaning the
instr
vent instrument malfunction and enhance its reliability.
ument and using general care when operating it.
SPECMONB Series Service Manual7
Maintenance
General care
Interior Ccleaning
Exterior cleaning
How often preve
ntive maintenance should be performed depends on the severity
of the environment in which you use the instrument. A proper time to perform
preventive maintenance is just before instrument adjustment.
The cabinet helps keep dust out of the instrument and should normally be in
place when operating the instrument.
Use a dry, low-velocity stream of air to c lean the interior of the chassis. Use a
soft-bristle, non-static-producing brush for cleaning around c omponents. If you
must use a liquid for minor interior cleaning, use a 75% isopropyl alcohol solution
and rinse with deionized water.
WARNING. Before performing any procedure that follows, power down the
instrument and disconnect it from line voltage. Failure to do so could cause
personal injury, or death.
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.
CAUTION. Avoid the use of chemical cleaning agents which might damage the
plastics used in this instrument. Use only deionized water when cleaning the menu
buttons or front-panel buttons. Use a 75% isopropyl alcohol solution as a cleaner
and rinse/wipe with deionized water. Before using any other type of cleaner,
consult your Tektronix Service Center or representative.
Inspect the outside of the instrument for damage, wear, and missing parts, using
the following table as a guide. Immediately repair defects that could cause
personal injury or lead to further damage to the instrument.
Table 2: External inspection checklist
ItemInspect forRepair action
Cabinet, front panel, and
cover
Front-panel knobMissing, damaged, or loose
Cracks, scratches,
deformations, damaged
hardware
knob
Repair or replace defective
module
Repair or replace missing or
defective knob
8SPECMONB Series Service Manual
Table 2: External inspection checklist (cont.)
ItemInspect forRepair action
Connectors
Carrying handle, and
cabinet feet
Accessories
Broken shells, cracked
insulation, and deformed
contacts; dirt in connectors
Correct operationRepair or replace defective
Missing items or parts of
items, bent pins, broken or
frayed cables, and damaged
connectors
Repair or replace defective
modules; clear or wash out
dirt
module
Repair or replace damaged
or missing items, frayed
cables, and defective
modules
Maintenance
Flat panel display cleaning
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 comme rcial glass cleaners to clean the
display surface. Avoid spraying liquids directly on the display surface. Avoid
bing the display with excessive force.
scrub
Clean the flat panel display surface by gently wiping the display with a
n-room wipe (such as Wypall Medium Duty Wipes, #05701, available from
clea
Kimberly-Clark Corporation).
he display is very dirty, moisten the wipe with distilled water or a 75%
If t
isopropyl alcohol solution and gently wipe the display surface. Avoid using
excess force or you may damage the plastic display surface.
CAUTION. To prevent moisture from getting inside the instrument during external
cleaning, use only enough liquid to dampen the cloth or applicator.
To access the inside of the instrument for inspection and cleaning, refer to the
Removal and installation procedures in this section.
Inspect the inside of the instrument for damage and wear, using the following
table as a guide. Defects found should be repaired immediately.
CAUTION. To prevent damage from electrical arcing, ensure that circuit boards
and components are dry before applying power to the instrument.
Firmly seat connectors.
Repair or replace modules
with defe
cables.
Straighten, repair, or replace
defective hardware.
int and clean
ctive wires or
To clean the instrument interior, do the following steps:
lace
place
replace
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 a clean lint-free cloth dampened in warm
deionized water. (A cotton-tipped applicator is useful for cleaning in narrow
es and on circuit boards.)
spac
10SPECMONB Series Service Manual
Restoring the instrument software
Restoring the
instrument software
CAUTION. The operating system (OS) restore process deletes a ll existing content
on a hard drive, including the instrument application software and saved data
and configuration files. Save or back up important data and configuration files to
external files or media before restoring the instrument OS.
Restore the operating system
This proc
instrument hard disk drive. You will need to reload the instrument applications
after restoring the operating system.
CAUTION. Save or back up important data and configuration files to external fi les
or media before restoring the instrument OS.
NOTE. Read through these instructions before you perform the procedure. There
is a 5-second time frame in which you must press the F5 key to acces s the restore
program.
edure restores the instrument operating system from a partition on t he
1. Restart the instrument. During the boot-up process you will see the following
message at the center of the screen:
Starting Acronis Loader...
press F5 for Acronis Startup Recovery Manager
2. Repeatedly press the F5 key until the Acronis True Image Tool opens. There
is an approximate 5-second time period from when the message appears until
the instrument proceeds with the normal instrument startup. If the instrument
does not open the Acronis application, power off the instrument, then power
on the instrument and try again.
3. Click Restore.
4. In the Confirmation dialog box, click Ye s to restore the instrument operating
system, or No to exit the restore process. The restore process takes
approximately 30 minutes; the actual time depends on the instrument
configuration.
5. Reinstall the instrument product software.
SPECMONB Series Service Manual11
Restoring the instrument software
Get the latest
software
For information on the latest software and critical updates, check the Tektronix
Web site (www.tektronix.com/software) and search for virus, patch, or critical
updates for y
software.
our instrument. Follow the on-screen instructions to download the
12SPECMONB Series Service Manual
Removal and installation procedures
This subsection contains procedures for the removal and installation of all
customer-replaceable mechanical and electrical modules.
Preparation
WAR NI NG . Before doing this or any other procedure in this manual, read
the Safety Summary found at the beginning of this manual. Also, to prevent
possible injury to service personnel or damage to the instrument components,
read Installation in the SPECMONB Series Real-Time Signal Analyzers Quick
Start Use
Preventing ESD in this section.
r Manual, available on the Web at www.tektronix.com/manuals, and
Removal and installation procedures
This sub
WAR N
cord from the line voltage source. Failure to do so could cause serious injury
or death.
NOTE. Read the Equipment Required section for a list of the tools needed to
remove and install modules in this instrument. (See Table 4 on page 14.) Read the
cl
section contains the following items:
Preparatory information that you need to properly do the procedures that
.
follow
A list of tools required to remove and disassemble all modules.
Procedures for removal and reinstallation of the electrical and mechanical
modules.
ING. Before doing any procedure in this subsection, disconnect the power
eaning procedure before disassembling the instrument for cleaning.
SPECMONB Series Service Manual13
Removal and installation procedures
Equipment requ
ired. Most modules in the instrument can be removed with a
size T15 TORX screwdriver. Other tools needed for complete disassembly are
listed in the following table.
Table 4: Tools required for module removal
Item no.NameDescriptionGeneral tool number
1
2
3
4
5
6Angle-tip Tweezers
7
8
9
Screwdriver handleA ccepts TORX-driver
T10 TORX tipUsed for removing
T15 TORX tipUsed for removing most
1/8 inch flat-bladed
screwdriver
#0 Phillips screwdriverScrewdriver for
3/16 inch open-end
wrench
5/16 inch open-end
wrench
MA-800G Soldering Aid
bits
instrument. screws
TORX-driver bit for
T10 size screw heads
instrument screws.
TORX-driver bit for
T15 size screw heads
Screwdriver for
unlocking cable
connectors
removing small phillips
screws, CDRW, and
hard d rive
Used to remove front
panel knobs
Used to remove nut
posts
Used to remove nut
posts
Used to remove the
front panel trim
620-440
640-235
640-247
Standard tool
Standard tool
Standard tool
Standard tool
Standard tool
Standard tool
14SPECMONB Series Service Manual
Trim, cabinet, and module removal
Use the following two tables to determine items of the instrument that you will
need to remove to access replaceable parts. The first table lists items that may
need to be removed before you can access a replaceable module. The second
table lists customer replaceable modules and which items must be removed to
access the r
replaceable modules is shown in the following figure. (See Figure 2 on page 16.)
Table 5: Legend for accessing modules table
eplaceable module. The approximate location of the primary customer
Removal and installation procedures
A - Front Cover (if installed)F - Internal Cover, top
B - Front panel trim
C - Pouch (if installed)H- Removable HDD (if installed)M - Power Conversion board
D - Cabinet, top
E - Cabinet, bottom
G - Internal Cover, bottomL - Internal HDD (if installed)
I- Removable HDD Frame
J-DisplayAssembly
K - Front Panel
N- Power Supply
Table 6: Accessing modules
Remove these items to access the module
Modules to replaceABCDEFGHIJKLMN
Display Assembly
Panel
Front
Removable HDD Drive (if installed)
Removable HDD Frame
Digital Fan Tray (Upper Deck)
RF Deck Fan Tray
Real Time IQ/IF Output Acquisition
board (if installed)
RTT/DPSA board
COM-Express PC board
Internal HDD (if installed)
er Conversion board
Pow
Power Supply
SPECMONB Series Service Manual15
Removal and installation procedures
Figure 2: Power supply and HDD drive locations
16SPECMONB Series Service Manual
Removal and installation procedures
Figure 3: Main customer replaceable modules
SPECMONB Series Service Manual17
Removal and installation procedures
Removal procedures
NOTE. Unless directed otherwise, installation is the reverse of the removal
procedure.
These procedures assume you have access to the module you are removing. Use
the tables to determine which trim and/or modules to re move to gain access. (See
Table 5 on pa
reference for customer replaceable module locations. (See Figure 2 on page 16.)
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.
CAUTION. To avoid damage to the front panel Standby/On switch assembly, do
not set the Display module assembly on a w ork surface. Sliding the instrument
over th
ge 15.) (See Table 6 on page 15.) A figure is also provided as a quick
e edge of the work surface could break off the On/Standby switch assembly.
Display
Perform these steps to remove the Display module:
1. Remove the four screws securing the display to the Main chassis; two on the
topandtwoontheleftside.
2. Disconnect the cables from the COM Express PC board and keep the cables
connected to the display assembly.
3. Gently remove the Display module from the Main 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
e destroyed.
b
4. Disconnect the smaller Display cable from J2 on the Display Adapter board.
5. Disconnect the larger Display cable from J3 on the Display Adapter board.
18SPECMONB Series Service Manual
Removal and installation procedures
Front panel
Digital deck fans
Removable hard disk drive
Perform these s
1. Disconnect the Front panel cable from connector 71 on the Digital interface
board.
2. Remove the six T15 screws that secure the Front panel to the chassis; two on
the top, two on the right side, and two on the bottom front.
3. Pull the Front panel assembly from the chassis.
Perform these steps to remove the fan assembly from the digital deck:
1. Unplug the
marked Fan1 and Fan2.
2. Remove the four T15 TORX screws securing the fan assembly, located on the
left side of the instrument.
3. Lift the fan assembly up through the narrow slot between the side panel and
the card cage.
Perform these steps to remove the removable hard disk drive (if installed):
1. Loosen the thumbscrews securing the drive to the front panel.
teps to remove the Front panel:
fan control cable from the Digital interface board connector,
Power supply
2. Grasp
3. Remo
Follow these steps to remove the power supply assembly:
1. Remove the six T15 screws securing the power supply access cover from
2. Remove the two T15 screws securing the right side of the power supply
3. Remove the power supply support bracket.
4. Disconnect the line trigger cable from J7 of the Power conversion board.
5. Disconnect the power supply cable from the line filter cable.
the drive assembly by the thumb screws and pull the assembly straight
out of the instrument.
ve the four screws securing the hard drive to the bottom bracket.
the end of the Power Supply.
support bracket.
SPECMONB Series Service Manual19
Removal and installation procedures
Power conv
ersion board
6. Remove the two T
top front chassis.
7. Pull the power
take a little effort to pull, as the power supply must disconnect from the power
convertor board.
CAUTION. To prevent damage to the power convertor board connector, do not lift
the left end of the power supply while pulling.
Perform these steps to remove the Power conversion board:
NOTE. Remove the power supply support bracket and the power supply before
removing the Power conversion board.
1. Remove the cables connected to the Power conversion board:
ATX POWER 2 0 - p i n ca ble
ANALOG POWER 12-pin cable
RF PWR 50-pin ribbon cable
15 screws securing the power supply shield tabs to the
supply assembly from the left side of the chassis. This will
COM Express PC board
ribbon cable 10-pin cable
Flat
Line Trigger Sense 2-pin cable
2. Remove the five T15 screws securing the Power converter board to the chassis.
3. Lift the Power converter board from the instrument.
Perform these steps to remove the COM Express PC board:
1. Re
2. Disconnect all cables attached to the COM Express PC board.
3. Lift the latch levers on the top edge of the COM Express PC board assembly
4. Lift the COM Express PC board from the Instrument.
move the two screws securing the COM Express PC board to the main
chassis card guide.
to disconnect it from the Digital interface board.
20SPECMONB Series Service Manual
Troubleshooting
Troubleshooting
WAR NI NG . Before doing this or any other procedure in this manual, read
theSafetySu
possible injury to service personnel or damage to the instrument components,
read Installation in the SPECMONB Series Real-Time Signal Analyzers Quick
Start User Manual, available on the Web at www.tektronix.com/manuals, and
Preventing ESD in this section.
Troubleshooting contains information and procedures designed to help you isolate
faults to a module.
This subsection assumes that service personnel have the skills required to work
on the instrument, including PC troubleshooting and Windows operating system
skills. Details of PC and Windows operation and service are not in this manual.
For assistance, please contact your local Tektronix Service Center.
mmary found at the beginning of this manual. Also, to prevent
Servic
e level
This section contains information and procedures designed to help you isolate
faulty modules in the instrument. If a module needs to be replaced, follow the
val and Installation Pro cedures, located in this section.
Remo
Check for common problems
the following table to quickly isolate possible failures. The table lists
Use
problems and possible causes. The list is not exhaustive, but it may help you
eliminate a problem that is quick to fix, such as a blown fuse or loose cable.
Table 7: Failure symptoms and possible causes
SymptomPossible cause(s)
Instrument will not power onPower cord not plugged in
Faulty power supply (check Status LEDs)
Faulty power conditioner board
Faulty front panel power switch
Faulty display adapter board
SPECMONB Series Service Manual21
Troubleshooting
Table 7: Failure symptoms and possible causes (cont.)
SymptomPossible cause(s)
Front panel light comes on (instrument
powers on), but one or more fans will
not operate
No beeps on startup or multiple beeps
on startup (single beep is OK)
Flat panel display blank
Faulty fan cable
Defective fan assembly
Faulty power supply (check Status LEDs)
Faulty COM Express PC board
Faulty CPU
Digital interface board problem
Faulty COM Express PC board
BIOS setting not Advanced Chipset Features
> - On Chip VGA > Enabled - Boot Display >
CRT + LFP
Defective cable from PC Carrier board to
Display adapter board
atus indicator LEDs
St
Defective backlighting display
Faulty display
Faulty digital interface board
Faulty display adapter board
Hard disk drive related symptoms
Defective hard disk drive
Incorrect hard disk type selected in the BIOS
setup
Replaceable hard disk drive not installed
Power supply failure
Corrupted BIO S module firmware, reinstall
firmware
Loose cable
Corrupted OS image
Check that the Status Indicator LEDs are lit on the Power converter and Digital
interface boards to ensure the power supplies are operating. (See Figure 4.) (See
Table 8. ) (Se e Table 9.)
22SPECMONB Series Service Manual
Figure 4: Status indicator locations
Troubleshooting
Table 8: Power converter board LED status indicators
LEDStatus Indication
DS171STANDBY
DS172-15 V OK
DS173-8 V OK
DS174+8 V OK
DS175+15 V OK
DS176+30 V OK
Table 9: Digital interface board LED status indicators
LEDSta
481
DS
S482
D
S483
D
DS484+3.3 V OK
DS485+2.5 V OK
DS486+1.8 V OK
DS487+1.5 V OK
DS488FPGA INIT
DS489FPGA DONE
DS4810STATUS 0
tus Indication
OCK FAIL (normally off)
CL
5VSBOK
+
5VOK
+
SPECMONB Series Service Manual23
Troubleshooting
Diagnostics
Table 9: Digital interface board LED status indicators (cont.)
LEDStatus Indication
DS4811STATUS 1 (normally off)
DS911+1.2 V OK
This section describes how to use and interpret the embedded diagnostics interface
for both the Power on self tests (POST) and the extended diagnostics tests. The se
tests determine whether there has been a module failure in the instrument.
Power on self tests
The instrument runs Power on self tests automatically every time the instrument is
powered up. If a failure is detected during this process, the instrument displays the
Power-On Self Tests tab of the Diagnostics window to list which module(s) failed.
Select the Diagnostics Failure Info tab in the Diagnostics window for more
information about failures.
24SPECMONB Series Service Manual
Troubleshooting
All failu
Windows Event Viewer, click the Event Viewer button on the Diagnostics Failure
Info tab. The Windows Event Viewer is also available in the Administrative Tools
portion of the Windows Control Panel.
NOTE. Check the timestamp in the Event Viewer, as errors are stored on disk
and may be from earlier power cycles.
re information is logged in the Windows Event Viewer. To access the
SPECMONB Series Service Manual25
Troubleshooting
Diagnostics tests
The Diagnostic
instrument, including the POST tests. To run diagnostics:
1. Select Tools >
2. Select the Diagnostics tab and click All Modules, All Tests.
3. Click Single Test in the Repeat area.
s tab enables you to run any or all of the diagnostics tests in the
Diagnostics in the application menu bar.
4. Click RUN. The instrument performs the selected tests. For tests that require
manual intervention, follow the on-screen instructions to complete the tests.
A green dot next to a test means that the marked test is currently running. If
the test completes successfully the green dot is replaced by a black check
mark. If the test fails, the green dot is replaced by a red X.
5. To run spe cific tests, select those tests in the list and use the Repeat segment
of the window to set the test run conditions. The Repeat controls (see the
following figure) let you:
A) Repeat the t est(s) a specified number of times,
B) Repeat the test(s) until a failure occurs,
C) Repeat the test(s) continuously even if failures occur, or
D) Run the test(s) only one time.
26SPECMONB Series Service Manual
Troubleshooting
Microsoft windows event
viewer
The Microsoft w
diagnostics failure information, with other messages regarding the operating
system. If there is not a shortcut to the Event Viewer on the desktop you can
access it by clicking the Event Viewer button on the Diagnostics Failure Info tab.
indows event viewer maintains a permanent record of instrument
To view the Diagnostics failure information, first click the Windows Logs icon
in the left frame (under Event Viewer (Local)). Then click the Applications
icon. The view changes to show the individual error reports, as shown in the
following figure.
Scroll through the Event list to locate error events. Pay attention to the date
and time stamps, as the information is a permanent record and shows failure
information from earlier diagnostic sessions.
Also note that the Signal Analyzer diagnostic errors are labeled as TekRSA in the
Source column, to differentiate them from operating system messages.
SPECMONB Series Service Manual27
Troubleshooting
Scroll through
and time stamps, as the information is a permanent record and shows failure
information from earlier diagnostic sessions.
Also note that the Signal Analyzer diagnostic errors are labeled as TekRSA in the
Source column, to differentiate them from operating system messages.
Clicking on an error message to display error information in the General or
Details tabs located below the list.
Double-click an error message to open a separate window for that error message.
The window shows the date and time the error message was generated and the
source of the error message. The text of the error message is shown in the
iption area. The three buttons at the upper right let you navigate through the
Descr
error list (using the up and down arrows), or sends the record to the default printer.
the Event list to locate error events. Pay attention to the date
u scroll down in the error description, the event viewer always adds a line
If yo
that says “For more information, see Help and Support Center at” and includes a
link to Microsoft.com. Do not use this link, as Microsoft has no information o n
Tektronix instrument error messages.
Click Help in the Event Viewer Menu bar to open the online help and learn more
information on using the Event Viewer.
28SPECMONB Series Service Manual
Troubleshooting
Diagnostic test error
messages
The following t
recommended actions for each message.
Hardware modu
Digital interface board (See Table 11 on page 30.)
ADC board (See Table 12 on page 31.)
DPSA board (See Table 13 on page 32.)
RF interface board (See Table 14 on page 33.)
LO1 module (See Table 15 on page 34.)
LO2/Refe
Front panel (See Table 17 on page 38.)
ables list the instrument diagnostics error messages, with
le(SeeTable10onpage30.)
rence oscillator (See Table 16 on page 35.)
SPECMONB Series Service Manual29
Troubleshooting
Table 10: Hardw
TestError messageRecommended a
Hardware Init
Read
Programmable Part
Versions
are module diagnostic error messages
Uninitialized
See Event View
information
The Digital
found.
Acquisition Board not found.Send the instrument to a Tektronix Service Center for repair.
The DPSA Board was not found.Replace RTT/DPSA board.
Load Acqui
RF Interface Board not found or
FPGA Load failed.
LO1 not found or FPGA Load failed.Send the instrument to a Tektronix Service Center for r epair.
L02/Reference Oscillator not found
or FPGA
The RF C
found or the FPGA was not loaded.
e to communicate with Digital
Unabl
interface board.
reading ID’s.
Error
Unable to communicate with PPC.Send the instrument to a Tektronix Service Center for repair.
er for more
Interface Board was not
sition Board Failed.
Load failed.
onverter board was not
The COM Expres
board. Restart the instrument and check the Event Viewer. If the
problem persists, send the instrument to Tektronix Service Center for
repair.
Send the ins
Send the instrument to a Tektronix Service Center for repair.
Replace RF Interface board.
Send the instrument to a Tektronix Service Center for repair.
Send th
Possible Digital interface board problem. Restart the instrument. If
problem persists, return to Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
trument to a Tektronix Service Center for repair.
e instrument to a Tektronix Service Center for repair.
ction
s PC is not communicating with the Digital Interface
Table 11: Digital interface Board diagnostic error messages
TestError messageRecommended action
Digital Board ID
Verification
Load Test
Digital Board
Register R/W Test
Test
Digital Interface Board ID
Verification Failed.
Bad FPGA file path.Reinstall the product software.Digital Board FPGA
Exception in Digital Interface FPGA
Load.
Done bit not returned high.
Digital Interface alternating 1's and
0's R/W test failed.
Digital Interface reg R/W Walking
1's test failed.
Unable to communicate with Digital
Interface Board.
SRAM memory failure at “memory
address”.
Write value was “xxx”
Read Value was “xxx”
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.Digital Board SRAM
Send the instrument to a Tektronix Service Center for repair.
30SPECMONB Series Service Manual
Table 11: Digital interface Board diagnostic error messages (cont.)
TestError messageRecommended action
Invalid number of return words.Send the instrument to a Tektronix Service Center for repair.Digital F IFO Test
Bad value in returned buffer.Send the instrument to a Tektronix Service Center for r epair.
PPC returned unknown status.Send the instrument to a Tektronix Service Center for repair.PPC POST Results
PPC did not return POST status.Send the instrument to a Tektronix Service Center for repair.
Digital Board
Acquisition Test
Digital Board
SDRAM Test
Digital Board
FLASH Test
Digital Board 28 Volt
Supply Test
Digital Board Audio
Test
Acquisition data at “offset xxx” was
not correct.
Write failure. S D RAM addr:
0xXXXX
Read failure. SDRA M addr:
0xXXXX
Failed bit exclusion Test with
pattern XXXX.
Validation failed at offset XXXX.
Blocks XXXX and XXXX are
mirrored.
Verification of this supply is done
by the operator.
No audio was heard.
Send the instrument to a Tektronix Service Center for repair.
Reseat the DIMM Acquisition memory module in the socket. If the
problem persists, send the instrument to a Tektronix Service Center
for repair.
Send the instrument to a Tektronix Service Center for repair.
If 28 V is not present at the rear-panel BNC connector, check the
+28 V at the test point on the power conversion board. If the 28 V
is not present, replace the power conversion board. If the +28 V is
present on the power conversion board, send the instrument to a
Tektronix Service Center for repair.
Verify that audio is not muted and level is set properly using Windows
Volume control. If this does not correct the problem, send the
instrument to a Tektronix Service Center for repair.
Troubleshooting
Table 12: ADC board diagnostic error messages
TestError messageRecommended action
ADC board ID
Verification
ADC board FPGA
Load Test
ADC board Register
R/W Test
ADC board LVDS
Test
ADC Free Run
Trigger Test
Pattern Test
ADC Board Not Found in slot 1.Send the instrument to a Tektronix Service Center for repair.
Bad FPGA file path. The file was
not found in the directory.
The Main FPGA load failed.Send the instrument to a Tektronix Service Center for repair.
The Buffer FPGA load failed.Send the instrument to a Tektronix Service Center for repair.
DCM N ot locked.Send the instrument to a Tektronix Service Center for repair.
ADC R/W test FAILED.Send the instrument to a Tektronix Service Center for repair.
ADC LVDS test FAILED.Send the instrument to a Tektronix Service Center for repair.
ADC Free Run Trigger Test
FAILED.
Unexpected data at offset X.Send the instrument to a Tektronix Service Center for repair.ADC board Acq
Trigger timeout occurred.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
ADC Over range.Signal too strong. Run signal path test. If the signal path test passes
Signal below -50 dBm.Verify that the IF cable from the RF deck to the ADC board IF
No signal found in acquired
spectrum.
ADC OverrangeSignal too strong. Run signal path test. If the signal path test passes
Signal below -50 dBm.Verify that the IF cable from the RF deck to the ADC board IF
No signal found in acquired
spectrum.
ADC OverrangeSignal too strong. Run signal path test. If the signal path test passes
Signal below -50 dBm.Verify that the IF cable from the RF deck to the ADC board IF
No signal found in acquired
spectrum.
Send the instrument to a Tektronix Service Center for repair.
and this test fails, send the instrument to a Tektronix Service Center
for repair.
connector is firmly connected. Repeat the test, if the problem
persists, send the instrument to a Tektronix Service Center for repair.
Verify Normalization source is functional by running the Signal Path
test. If that test passes and this test still fails, send the i nstrument to
a Tektronix Service Center for repair.
and this test fails, send the instrument to a Tektronix Service Center
for repair.
connector is firmly connected. Repeat the test, if the problem
persists, send the instrument to a Tektronix Service Center for repair.
Verify Normalization source is functional by running the Signal Path
test. If that test passes and this test still fails, send the i nstrument to
a Tektronix Service Center for repair.
and this test fails, send the instrument to a Tektronix Service Center
for repair.
connector is firmly connected. Repeat the test, if the problem
persists, send the instrument to a Tektronix Service Center for repair.
Verify Normalization source is functional by running the Signal Path
test. If that test passes and this test still fails, send the i nstrument to
a Tektronix Service Center for repair.
able 13: DPSA board diagnostic error messages
T
est
T
DPSA ID
Verification
DPSA FPGA Load
Test
rror message
E
DPSA Board ID Verification Failed.If ID was not found or a board other than the DPSA Board w as found,
Bad DPSA FPGA file path. The file
was not found in the directory.
DPSA FPGA Load Failed.Replace the RTT/DPSA board. If the problem persists, send the
DCM Not locked.Replace the RTT/DPSA board. If the problem persists, send the
ecommended action
R
Version/ID is nonfunctional. Replace the RTT/DPSA Board.
Reinstall the product software.
instrument to a Tektronix Service Center for repair.
instrument to a Tektronix Service Center for repair.
Replace the Power Conversion board. If the problem persists,
replace the RF Interface board. If the problem persists, replace
the power supply. If the problem persists, send the instrument to a
Tektronix Service Center for repair.
Replace the Power Conversion board. If the problem persists,
replace the RF Interface board. If the problem persists, replace
the power supply. If the problem persists, send the instrument to a
Tektronix Service Center for repair.
Replace the Power Conversion board. If the problem persists,
replace the RF Interface board. If the problem persists, replace
the power supply. If the problem persists, send the instrument to a
Tektronix Service Center for repair.
Replace the Power Conversion board. If the problem persists,
replace the RF Interface board. If the problem persists, replace
the power supply. If the problem persists, send the instrument to a
Tektronix Service Center for repair.
Replace the Power Conversion board. If the problem persists,
replace the RF Interface board. If the problem persists, replace
the power supply. If the problem persists, send the instrument to a
Tektronix Service Center for repair.
Replace the Power Conversion board. If the problem persists,
replace the RF Interface board. If the problem persists, replace
the power supply. If the problem persists, send the instrument to a
Tektronix Service Center for repair.
le 15: LO1 module diagnostic error messages
Tab
t
Tes
L01 ID Test
L01 FPGA Load
Test
L01 Register R/W
est
T
or message
Err
ard not found.
Bo
FPGA Load failed.Send the instrument to a Tektronix Service Center for repair.
Read /Write test failed.Send the instrument to a Tektronix Service Center for repair.
ommended action
Rec
n the PPC load test. This will r erun hardware discovery. If error
Ru
persists, send the instrument to a Tektronix Service Center for repair.
LO2 will not phase lockedSend the instrument to a Tektronix Service Center for repair.
Board not found.Run the PP C load test. This will rerun hardware discovery. If error
FPGA Load failed.Send the instrument to a Tektronix Service Center for repair.
Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
persists, send the instrument to a Tektronix Service Center for repair.
15 V Supply Over/Under Voltage.Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
8 V Supply Over/Under Voltage.Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
2.5 V Supply Over/Under Voltage.Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
1.2 V Supply Over/Under Voltage.Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
–8 V Supply Over/Under Voltage.Replace the Power conversion board. If the problem persists, replace
the RF interface board. If the problem persists, replace the power
supply. If the problem persists, send the instrument to a Tektronix
Service Center for repair.
RF Atten test
10dB RF Atten signal path test
Failed.
2nd IF Atten test
2nd IF 10dB Atten signal path
Failed.
2nd IF Amp test
2nd IF Amp gain path Failed.
Preamp test
Preamp signal path FAILED
LF Attenuator test
LF 20dB LF Attenuator Failed.
LF Amp test
LF Amp signal path test Failed.
LF ADC test
RF Converter to LF ADC path
Failed.
NB ADC test
RF Converter to NB ADC path
Failed.
SAW filter test
1MHz saw filter test Failed.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for r epair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Step Attenuator testStep Attenuator Failed.Send the instrument to a Tektronix Service Center for repair.
IF Attenuator TestThe IF attenuator Failed.
Preamp TestTestThe Preamp Failed
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Table 17:
TestError mes
Front Panel Test
Front panel diagnostic error messages
Front Pa
Front Pa
sage
nel LCD test failed.
nel Button test failed.
Recommen
Replace
Replace
the LCD display.
the front panel keypad.
ded action
38SPECMONB Series Service Manual
Replaceable parts
This section contains a list of the replaceable modules for the instrument. 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
followin
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.
ginformationinyourorder:
Part number
Instrument type or model number
Instrument serial number
Instrument modification n umber, if applicable
SPECMONB Series Service Manual39
Replaceable parts
Module servicing
Modules can be s
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
and meet the same factory specifications. For more information about the
module exch
contact a Tektronix sales office or distributor; see the Tektronix Web site
(www.tektronix.com) for a list of offices.
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 othe r
replacement parts.
erviced by selecting one of the following three options. Contact
ange program, call 1-800-833-9200. Outside North America,
40SPECMONB Series Service Manual
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.
ColumnColumn nameDescription
1
2Tektronix part number
3 and 4
5
6
Figure & index numberItems in this section are referenced by figure and index numbers to the exploded view
illustrations that follow.
Use this part number when ordering replacement parts from Tektronix.
Serial numberColumn three lists the serial number at which the part was first effective. Column
s the serial number at which the part was discontinued. No entry means that
four list
the part is usable for all serial numbers.
QtyThe quantity of parts used.
Name & descriptionAn 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.
Replaceable parts
Abbreviations
viations conform to American National Standard ANSI Y1.1-1972.