Tektronix SPECMON3B, SPECMON6B, SPECMON26B Service

xx
SPECMONB Series
ZZZ
Real-Time Signal Analyzer
Service Manual
www.tektronix.com
P077090900*
*
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. Specications 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 nd 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
Preface ............................................................................................................. vii
Manual content............................................................................................... vii
Manual conventions .................. ................................ .................................. ..... vii
Related documentation ............................... ................................ ....................... viii
Theory of operation ................................................................................................ 1
General................... ................................ .................................. ..................... 2
Signal path and processing................................... .................................. ............... 2
Display panel .............................. ................................ ................................ ..... 3
Front panel...................................................................................................... 3
Rear panel ............... ................................ ................................ ....................... 3
Power supply .......................... .................................. ................................ ....... 4
Fans.............................................................................................................. 4
Adjustment procedure....................................... ................................ ....................... 5
Running alignments .............. ................................ .................................. ........... 5
Maintenance......................................................................................................... 7
Preventing ESD................................................................................................ 7
Inspection and cleaning .................... ................................ .................................. . 7
Restoring the instrument software ............................................................................... 11
Restore the operating system ................................................................................ 11
Get the latest software...................... .................................. ................................ 12
Removal and installation procedures.. .................................. ................................ ........ 13
Preparation............................... ................................ .................................. .... 13
Trim, cabinet, and module removal................. ................................ ........................ 15
Removal procedures.......................................................................................... 18
Troubleshooting.................................................................................................... 21
Service level................................................................................................... 21
Check for common problems................................................................................ 21
Diagnostics .................................................................................................... 24
Replaceable parts .................................................................................................. 39
Parts ordering information................................................................................... 39
Using the Replaceable parts list........... ................................ ................................ .. 41
SPECMONB Series Service Manual i
Table of Contents
List of Figure
Figure 1: Block diagram ...................... ................................ .................................. ... 1
Figure 2: Power supply and HDD drive locations ............................................................. 16
Figure 3: Main customer replaceable modules....... .................................. ........................ 17
Figure 4: Status indicator locations.......................................... .................................. .. 23
Figure 5: External parts......................... ................................ ................................ .. 43
Figure 6: Display and front panel................................................................................ 45
Figure 7: Modules................. ................................ ................................ ................ 47
Figure 8: Power supply and removable hard drive ............................................................ 49
Figure 9: Upper deck fans, misc. cables .................. ................................ ...................... 51
List of Tables
Table 1: Rear panel connectors .................... .................................. ............................. 3
Table 2: External inspection checklist. .................................. ................................ ......... 8
Table 3: Internal inspection check list............................... ................................ ............ 10
Table 4: Tools required for module removal ................................................................... 14
Table 5: Legend for accessing modules table .. .................................. .............................. 15
Table 6: Accessing modules...................................................................................... 15
Table 7: Failure symptoms and possible causes.......................................... ...................... 21
Table 8: Power converter board LED status indicators........................................................ 23
Table 9: Digital interface board LED status indicators........................................................ 23
Table 10: Hardware module diagnostic error messages................................... .................... 30
Table 11: Digital interface Board diagnostic error messages................. ................................ 30
Table 12: ADC board diagnostic error messages ........ ................................ ...................... 31
Table 13: DPSA board diagnostic error messages............................................................. 32
Table 14: RF Interface board diagnostic error messages...................................................... 33
Table 15: LO1 module diagnostic error messages ............................................................. 34
Table 16: LO2/Reference oscillator diagnostic error messages .... . . .... . ..... . ..... . ..... . ..... . ..... . ..... 35
Table 17: Front panel diagnostic error messages ...................... ................................ ........ 38
Table 18: External parts................... .................................. ................................ ...... 42
Table 19: Display and front panel ............................................................................... 44
Table 20: Modules................................................................................................. 46
Table 21: Power supply and removable hard drive ...... ................................ ...................... 48
Table 22: Upper deck fans, misc. cables........................................................................ 50
s
ii SPECMONB Series Service Manual
Important safety information
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 specied. 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 specied in this manual.
The product is designed to be used by trained personnel only.
Only qualied 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 re or personal
injury
SPECMONB Series Service Manual iii
Use proper power cord. Use only the power cord specied for this product and certied 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 difcult 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 re 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 oat 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 qualied 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 specied replacement parts.
Use proper fuse. Useonlythefusetypeandratingspecied 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
iv SPECMONB 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 specied 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 qualied 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 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 rst aid and resuscitation is
SPECMONB Series Service Manual v
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 nd out the nature of the potential hazards and any actions which have to betakentoavoidthem. (Thissymbolmayalsobeusedtorefertheuserto ratings in the manual.)
vi SPECMONB 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 specications, 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 efciently.
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 eld-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 Manual vii
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 Specications and Performa
contains the following technical information about the instrument:
Electri
d accessories.
nce Verication Technical Reference (English). This document
cal and physical specications, including a list of certications
and compliances.
A perfor
against guaranteed specications.
SPECMO
(English). Describes the GPIB instrument programming commands and interface.
SPECMONB Series Real-Time Signal Analyzer Declassication and Security Instructions (English). Provides instruction on how customers with data
security concerns can sanitize or remove memory devices from the instrument.
mance verication procedure to check instrument performance
NB Series Real-Time Signal Analyzer Programmer Manual
viii SPECMONB 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 Manual 1
Theory of operation
General
A processor system controls the instrument. The instrument features an XGA resolution at-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 preamplier, 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 eld-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 ltered numerically and processed either for
Trigger inputs
2 SPECMONB 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
USB Input/Output USB Two USB 2.0 connectors
Keyboard Input
VGA Output D-Sub
Serial Input/Output D-Sub Serial communications port (COM1) to
Trigger In Input
Output
Input
Output BNC 10 MHz output or loop-through of user
Input/Output
Connector type Description
BNC External time-base reference. See data
sheet for signal quality requirements.
Reference In signal
RJ-45
PS/2 Keyboard-only PS/2 connector
BNC TTL Gate/trigger input signal
10/100/1000baseT Ethernet connector
External monitor connector
processor system
SPECMONB Series Service Manual 3
Theory of operation
Table 1: Rear panel connectors (cont.)
Power supply
Input or
Name
Line In (blue)
MIC In (pink)
Headphone
+28 VDC Output BNC
GPIB Input/Output
Zero-span
Output
Input 3.5 mm
Input 3.5 mm
Output
Output BNC
Connector type Description
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.
4 SPECMONB 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 sufcient 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 Manual 5
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 specied 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
6 SPECMONB 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 oororwork-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 Manual 7
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
Item Inspect for Repair action
Cabinet, front panel, and cover
Front-panel knob Missing, damaged, or loose
Cracks, scratches, deformations, damaged hardware
knob
Repair or replace defective module
Repair or replace missing or defective knob
8 SPECMONB Series Service Manual
Table 2: External inspection checklist (cont.)
Item Inspect for Repair action
Connectors
Carrying handle, and cabinet feet
Accessories
Broken shells, cracked insulation, and deformed contacts; dirt in connectors
Correct operation Repair 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 at 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 at 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.
SPECMONB Series Service Manual 9
Maintenance
Table 3: Intern
Item Inspect for Repair action
Circuit boards
Resistors Burned, crac
Solder connections Cold solder or rosin joints.
Capacitors
Wiring and cables Loose plugs or connectors.
Chassis Dents, deformations, and
al inspection check list
Loose, broken solder connections. Burned circuit boards. Burned, brok circuit-run plating.
blistered condition.
Damaged or Corroded solder on leads or terminals.
Burned, broken, or frayed wiring.
damaged hardware.
, or corroded
en, or cracked
ked, broken,
leaking cases.
Remove and rep damaged circuit board.
Remove and re damaged circuit board.
Resolder jo with isopropyl alcohol.
Remove and damaged circuit board.
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
10 SPECMONB 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 conguration les. Save or back up important data and conguration les to external les 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 conguration files to external 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 Conrmation 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 conguration.
5. Reinstall the instrument product software.
SPECMONB Series Service Manual 11
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
12 SPECMONB 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 Manual 13
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. Name Description General tool number
1
2
3
4
5
6 Angle-tip Tweezers
7
8
9
Screwdriver handle A ccepts TORX-driver
T10 TORX tip Used for removing
T15 TORX tip Used for removing most
1/8 inch at-bladed screwdriver
#0 Phillips screwdriver Screwdriver 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
14 SPECMONB 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 rst 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 gure. (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, bottom L - 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 replace A B C D E F G H I J K L M N
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 Manual 15
Removal and installation procedures
Figure 2: Power supply and HDD drive locations
16 SPECMONB Series Service Manual
Removal and installation procedures
Figure 3: Main customer replaceable modules
SPECMONB Series Service Manual 17
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 ngers. The oils in your ngers 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 gure 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.
18 SPECMONB 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 lter 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 Manual 19
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 ve 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.
20 SPECMONB 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 x, such as a blown fuse or loose cable.
Table 7: Failure symptoms and possible causes
Symptom Possible cause(s)
Instrument will not power on Power 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 Manual 21
Troubleshooting
Table 7: Failure symptoms and possible causes (cont.)
Symptom Possible 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 rmware, reinstall rmware
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.)
22 SPECMONB Series Service Manual
Figure 4: Status indicator locations
Troubleshooting
Table 8: Power converter board LED status indicators
LED Status Indication
DS171 STANDBY
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
LED Sta
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
DS488 FPGA INIT
DS489 FPGA DONE
DS4810 STATUS 0
tus Indication
OCK FAIL (normally off)
CL
5VSBOK
+
5VOK
+
SPECMONB Series Service Manual 23
Troubleshooting
Diagnostics
Table 9: Digital interface board LED status indicators (cont.)
LED Status Indication
DS4811 STATUS 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.
24 SPECMONB 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 Manual 25
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 cic 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 gure) let you:
A) Repeat the t est(s) a specied 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.
26 SPECMONB 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, rst 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 gure.
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 Manual 27
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.
28 SPECMONB 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 Manual 29
Troubleshooting
Table 10: Hardw
Test Error message Recommended 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
Test Error message Recommended action
Digital Board ID Verication
Load Test
Digital Board Register R/W Test
Test
Digital Interface Board ID Verication Failed.
Bad FPGA le 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.
30 SPECMONB Series Service Manual
Table 11: Digital interface Board diagnostic error messages (cont.)
Test Error message Recommended 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.
Verication 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
Test Error message Recommended action
ADC board ID Verication
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 le path. The le 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.
SPECMONB Series Service Manual 31
Troubleshooting
Table 12: ADC board diagnostic error messages (cont.)
Test Error message Recommended action
ADC board Dither Test
ADC board Narrow Band CW Acquisition Test
ADC board LF Acquisition Test
ADC board WB IF Acquisition Tes
Dither amplitude test - Failed
Dither frequency test - Failed
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 Overrange 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 Overrange 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.
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 rmly 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 rmly 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 rmly 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 Verication
DPSA FPGA Load Test
rror message
E
DPSA Board ID Verication Failed. If ID was not found or a board other than the DPSA Board w as found,
Bad DPSA FPGA le path. The le 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.
32 SPECMONB Series Service Manual
Troubleshooting
Table 13: DPSA board diagnostic error messages (cont.)
Test Error message Recommended action
DPSA Register R/W Test
DPSA Frame Transfer Test
DPSA LVDS Test The DPSA LVDS test failed. Replace the RTT/DPSA board. If the problem persists, send the
DPSA board FM/AM Audio Test
14: RF Interface board diagnostic error messages
Table
Read/Write test failed (returns read and write values).
CT Board QDR C ontrol Failure. Replace the RTT/DPSA board. If the problem persists, send the
FPGA File not found. Reinstall the product software.
FPGA Load Failed. Replace the RTT/DPSA board. If the problem persists, send the
Frame data test failed when looking for incrementing pattern.
No audio was heard.
Replace the RTT/DPSA board. If the problem persists, send the instrument to a Tektronix Service Center for repair.
instrument to a Tektronix Service Center for repair.
instrument to a Tektronix Service Center for repair.
Replace the RTT/DPSA board. If the problem persists, send the instrument to a Tektronix Service Center for repair.
instrument to a Tektronix Service Center for repair.
Replace the RTT/DPSA board. If the problem persists, send the instrument to a Tektronix Service Center for repair.
Test Error
terface ID Test
RF In
RF Interface FPGA Load Test
RF In
FPGA Load failed. Replace the RF interface board.
message
terface Board not found.
mended action
Recom
he PPC load test. This will rerun hardware discovery. If error
Run t persists, replace the RF interface board.
SPECMONB Series Service Manual 33
Troubleshooting
Table 14: RF Interface board diagnostic error messages (cont.)
Test Error message Recommended action
RF Interface Voltage/Current test
The 30 Volt supply is over voltage.
The 30 Volt supply is under voltage.
The 8 Volt supply is over voltage.
The 8 Volt supply is under voltage.
The 2.5 Volt supply is over voltage.
The 2.5 Volt supply is under voltage.
The 1.2 Volt supply is over voltage.
The 1.2 Volt supply is under voltage.
The –8 Volt supply is over voltage.
The –8 Volt supply is under voltage.
The 8VSB supply is over voltage.
The 8VSB supply is 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.
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.
34 SPECMONB Series Service Manual
Table 15: LO1 module diagnostic error messages (cont.)
Test Error message Recommended action
L01 Voltage/Current Test
Sum Loop Error voltage exceeds High threshold
Sum Loop Error voltage exceeds Low threshold
YTO Loop Error voltage exceeds High threshold
YTO Loop Error voltage exceeds Low threshold
Yig loop is unlocked.
Sum loop is unlocked. Send the instrument to a Tektronix Service Center for repair.
15 V supply voltage is over/under voltage.
12 V supply voltage is over/under voltage.
8 V supply voltage is over/under voltage.
5 V supply voltage is over/under voltage.
3.3 V supply voltage is over/under voltage.
L01 is over temp. Warning only.
Warning only.
Warning only.
Send the instrument to a Tektronix Service Center for repair.
Run the RF Interface ADC test to verify a power supply problem. Check the Digital interface board power supply status LEDs. (See Table 9.)
Run the RF Interface ADC test to verify a power supply problem. Check the Digital interface board power supply status LEDs. (See Table 9.)
Run the RF Interface ADC test to verify a power supply problem. Check the Digital interface board power supply status LEDs. (See Table 9.)
Run the RF Interface ADC test to verify a power supply problem. Check the Digital interface board power supply status LEDs. (See Table 9.)
Run the RF Interface ADC test to verify a power supply problem. Check the Digital interface board power supply status LEDs. (See Table 9.)
Troubleshooting
able 16: LO2/Reference oscillator diagnostic error messages
T
est
T
O2 ID Test
L
LO2 FPGA Load Test
L02 Register R/W Test
rror message
E
oard not found.
B
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.
ecommended action
R
un the PPC load test. This will rerun hardware discovery. If error
R persists, send the instrument to a Tektronix Service Center for repair.
SPECMONB Series Service Manual 35
Troubleshooting
Table 16: LO2/Reference oscillator diagnostic error messages (cont.)
Test Error message Recommended action
L02 Voltage/Current Test
LO2 Phaselock check
RF Converter ID Test
RF Converter FPGA Load Test
26 V supply voltage is over/under voltage
9 V supply voltage is over/under voltage
6 V supply voltage is over/under voltage
5 V supply voltage is over/under voltage
3.3 V supply voltage is over/under voltage
–9 V supply voltage is over/under voltage
L02 is over temp Warning only.
LO2 will not phase locked Send 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.
36 SPECMONB Series Service Manual
Table 16: LO2/Reference oscillator diagnostic error messages (cont.)
Test Error message Recommended action
RF Converter Voltage/Current test
Signal Path Test
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 lter test
1MHz saw lter 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.
Troubleshooting
SPECMONB Series Service Manual 37
Troubleshooting
Table 16: LO2/Reference oscillator diagnostic error messages (cont.)
Test Error message Recommended action
Step Attenuator test Step Attenuator Failed. Send the instrument to a Tektronix Service Center for repair.
IF Attenuator Test The IF attenuator Failed.
Preamp TestTest The Preamp Failed
Send the instrument to a Tektronix Service Center for repair.
Send the instrument to a Tektronix Service Center for repair.
Table 17:
Test Error 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
38 SPECMONB 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 eld ofce or representative.
Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benet 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 eld ofce or representative will contact you concerning any change in part number.
ginformationinyourorder:
Part number
Instrument type or model number
Instrument serial number
Instrument modication n umber, if applicable
SPECMONB Series Service Manual 39
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 signicantly less than new modules and meet the same factory specications. For more information about the module exch contact a Tektronix sales ofce or distributor; see the Tektronix Web site (www.tektronix.com) for a list of ofces.
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,
40 SPECMONB 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.
Column Column name Description
1
2 Tektronix part number
3 and 4
5
6
Figure & index number Items in this section are referenced by gure and index numbers to the exploded view
illustrations that follow.
Use this part number when ordering replacement parts from Tektronix.
Serial number Column three lists the serial number at which the part was rst 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.
Qty The quantity of parts used.
Name & description An item name is separated from the description by a colon (:). Because of space
limitations, an item name may sometimes appear as incomplete. Use the U.S. Federal
Catalog handbook H6-1 for further item name identication.
Replaceable parts
Abbreviations
viations conform to American National Standard ANSI Y1.1-1972.
Abbre
SPECMONB Series Service Manual 41
Replaceable parts
Table 18: Exter
nal parts
Tektronix Fig. & index number
5--1 200-5163-02 1
-2 367-0528-00 1
-3 407-4887-00 1
-4 211-1265-00 2
-5
-6 407-5530-02 2
-7
-8 211-1230-00 4
-9 348-1648-00 4
-10 211-0720-00 4
-11 200-514
-12 211-10
-13 200-51
-14 200-5
-15 211-1
-16 101-0
-17
-18 200-4519-00 1
part
number
367-0542-00 2
212-0650-00 4
333-
333-4677-00 1
9-00
50-00
73-00
196-01
224-00
152-00
4619-01
Serial no. effective
Serial no. discont'd Qty Name & description
COVER; TOP COSMETIC, ALUM
(See cover at
HANDLE, CARR
BRACKET; HAN
SCREW, MACH
** COVER ATT
HANDLE ASS
BRACKET, M
SCREW, MAC
SCREW; 10
** END COV
FOOT; REA
SCR, ASS
SPECMON3B, SPECMON6B
1
34
1
1
14
1
1
COVER; TOP, INTERNAL; SAFETY CONTROLLED
SCREW, MACHINE; 6-32 X 0.312 L, PNH, STEEL, ZINC FINISH, T15
COVER; BOTTOM, INTERNAL; SAFETY CONTROLLED
COVER; BOTTOM COSMETIC; SAFETY CONTROLLED
SCREW, 6-32 X 0.375L, PNH, BLACK, T15, NYLOC
TRIM, FRONT; TRIM ACQUISITION
COSMETIC FRONT ASSY; FRONT PANEL AND ACQUISITION TRIM
SPECMON3B, SPECMON6B
COSMETIC FRONT ASSY; FRONT PANEL AND ACQUISITION TRIM
SPE
COV
tached parts below.)
YING; DUAL DUROMETER MOLDED
DLE BASE, PC/ABS ALLOY
INE, 8-32 X 1.000L PNH, BLACK OXIDE, T20, NYLOK, STEEL
ACHED PARTS**
Y, CARRYING; AL, SS, BLACK
OUNTING; CARRYING HANDLE
HINE; 10-32 X 0.437, FLH, 100 DEG, SST PSVT, POZ
-32X.500 SOC CAP,18-8 ZINC PLATED STEEL
ER ATTACHED PARTS**
R W/CORD WRAP, THERMO PLASTIC; SAFETY CONTROLLED
EM WSHR; 6-32 X 0.500, PNH, STEEL, ZINC FINISH, T15 TORX DR, MACHINE
CMON26B
ER, FRONT; PC ABS,17.420L X 8.670W X 2.000TH,TEK BLUE
42 SPECMONB Series Service Manual
Replaceable parts
Figure 5: External parts
SPECMONB Series Service Manual 43
Replaceable parts
Table 19: Displ
ay and front panel
Tektronix Fig. & index number
6--1 650-5583-xx 1
-2 259-0155-01 1
-3 407-5504-00 1
-4 174-5807-00 1
-5
-6 119-7550-00 1
-7
-8 878-0414-xx 1
-9 211-1050-00 16
-10 174-5014-00 1
-11 174-5086-00 1
-12 174-5087-00 1
-13 348-197
-14 407-55
-15 211-09
-16 814-0
-17 878-0
-18 174-5101-00 1
-19 174-5080-00 1
-20 878-0417-00 1
-21 878-0749-00 1
-22 260-2903-00 1
-23 333-4618-00 1
-24 366-A056-01 1
part
number
119-7537-00 1
407-5695-xx 1
Serial no. effective
9-00
49-00
50-00
207-00
814-00
Serial no. discont'd Qty Name & description
MODULE ASSY; DISPLAY WITH 119755000 LCD
FLEX CIRCUIT; POWER SWITCH, W/LED
BRACKET, DISPLAY FRONT; SAFETY CONTROLLED
CABLE, ASSEMBLY (DISPLAY BACKLIGHT)
TOUCH SCREEN ASSEMBLY, 10.4 IN, RESISTIVE, 5-WIRE, W/GASKETS
DISPLAY MODULE; LCD; 1024 X 768; 10.4 INCHES DIAGONAL, TFT, LED BACK LIGHT
BRACKET, DISPLAY
CIRCUIT BD ASSY; INTERCONNECT DISPLAY ADAPTER BRD
SCREW,MACHINE;6-32X0.312L,PNH,STEEL,ZINCFINISH,T15
CABLE ASSY,SP;DISPLAY DATA,FLAT FLEX
CA ASSY, SP; IDC, RIBBON, DISP ADAPT TO DIG INTERF, 2MM, 2X10
SPECMON
CA ASSY,
SPECMON3B, SPECMON6B
1
2
4
1
1
GASKET, SET DISPLAY
BRACKET; DISPLAY, MOUNTING
SCREW; 6-32 X 0.25,TORX,STL
PANEL ASSEMBLY; FRONT
CIRCUIT BRD ASSY; RSA ENCODER
SPECMON26B
CA ASSY, SP; IDC, RIBBON, AUDIO COM Express PC TO DIG INTERF, 2X5
CA ASSY, SP; IDC, RIBBON, FRT PANEL TO DIG INTF, 2X10
CIRCUIT BD ASSY; USB I/O
CIRCUIT BD ASSY; FRONT PANEL CONTROL
SWITCH, KEYPAD FRONT PANEL
FRONT SUBPANEL ASSEMBLY
KNOB; GENERAL PURPOSE
3B, SPECMON6B
SP; IDC, RIBBON, DISP ADAPT TO DIG INTERF, 2MM, 2X15
44 SPECMONB Series Service Manual
Replaceable parts
Figure 6: Display and front panel
SPECMONB Series Service Manual 45
Replaceable parts
Table 20: Modul
es
Tektronix Fig. & index number
7-1
-2 407-5770-xx 1
-3 211-1050-00 10
-4 039-0210-00 1
-5
-6 214-5257-xx 1
-7
-8 253-0513–xx 1
-9 214-5355-xx 1
-10 119-7683-00 1 FAN, 70MM X 70MM X 15MM, 12V
-11 211-134
-12 863-08
-13 407-53
-14 436-0
-15 863-0
-16 211-0
-17 200-
-18 174-
-19 174-
-20 407
-21 174
part
number
850-0253-xx 1
878-0949-xx 1
253-0515–xx 1
253-0514–xx 1
-5181-00
-5213-xx
6-00
91-00
58-00
435-00
955-00
450-00
5317-00
5106-01
6418-00
Serial no. effective
Serial no. discont'd Qty Name & description
SUBASSY; CARRIER BRD ASSY,8780949XX WITH COM-E (ESM-QM77),BCM,MODULE ONLY
SPECMON3B, SPECMON6B
CIRCUIT BOARD; PC CARRIER
SPECMON26B
BRACKET, COM EXPRESS CARRIER
SCREW, MACHINE; 6-32 X 0.312 L, PNH, STEEL, ZINC FINISH, T15
PROCESSOR MODULE; PCIE, COM-E
THERMAL INTERFACE MATERIAL PHASE CHANGE, 20MM SQ.
SPACER, COPPER
THERMAL INTERFACE MATERIAL GAP PAD, 0.5MM THICK, 30MMSQ
THERMAL INTERFACE MATERIAL GAP PAD, 0.5MM, 20MM SQ
HEATSINK, ACTIVE, COM-EXPRESS BCM EMS-QM77
4
1
1
1
1
4
1
2
1
1
1
SCREW, MACHINE, PANHEAD M3 X 0.5 X 26MM, PHILLIPS
CIRCUIT BD ASSY; RTT/DPSA, PB-FREE
BRACKET, HEATSINK FAN
FAN ASSEMBLY
CKT BD SUBASSY; REAL TIME IQ AND LOG VIDEO OUTPUT
SCREW, MACHINE; 2.5MM X 0.45 X 6MM, PNH, STEEL, ZINC PLATED, T8 TORX
COVER, REAR PANEL, OPTION (REAL TIME I AND Q)
CA ASSY, SP;IDC, TW FLAT, I&Q OUTPUT TO REAR PANEL
CABLE, COAX BNC-ST TO SMB-RA
BRACKET, GROUNDING (LAN AND PS/2)
CABLE ASSY,RIBBON; STATIC GROUND,1X2,RT I/Q TO REAR PANEL
46 SPECMONB Series Service Manual
Replaceable parts
Figure 7: Modules
SPECMONB Series Service Manual 47
Replaceable parts
Table 21: Power
supply and removable hard drive
Tektronix Fig. & index number
8--1 119-6986-06 1
-2 211-0718-00 6
-3 407-5477-00 1
-4 441-2619-00 1
-5
-6 407-5473-00 1
-7
-8 211-1050-00 6
-9 407-5337-00 1
-10 174-5349-00 1
-11 174-5089-00 1
-12 174-5090-00 1
-13 174-5101-00 1
-14 174-51
-15 863-0592-01 1
-16 211-0510-00 8
-17 200-5135-00 1
-18 174-5227-00 1
-19 211-0380-00 2
-20 335-3331-xx 1
part
number
850-0290-00 1
441-2620-01 1
00-00
Serial no. effective
Serial no. discont'd Qty Name & description
POWER SUPPLY; AC-DC;460W;+3.3V 40A, +5V 34A, +12V 25A, -12V 1A, +5VSB 2A;90-264VAC
SCREW, MACHI
BRACKET; POW
CHASSIS; DR
DISK DRIVE A
BRACKET; HA
CHASSIS; D
SCREW, MAC
HDD CABLE
CABLE ASS
CA ASSY, P
CA ASSY,
CA ASSY, SAFETY CONTROLLED
1
CA ASSY, PWR; IDC, RIBBON, PWR CONV TO BULKHEAD, 2X25, 0.100 CTR; SAFETY CONTROLLED
CIRCUIT BD ASSY; POWER CONVERSION
SCREW, MACHINE; 6-32 X 0.375, PNH, ZINC PLATED STEEL, T15
COVER, POWER SUPPLY
CABLE ASSY;LINE FILTER; SAFETY CONTROLLED
SCREW, MACHINE; 4-40 X 0.375, FLH, STEEL, ZINC FINISH, T8
MARKER, ID, SPECMON-B REMOVABLE DRIVE
, 47-440HZ
NE; 6-32 X 0.312, FLH100, STEEL, ZINC FINISH, T-10 TORX
ER SUPPLY; SAFETY CONTROLLED
IVE TRAY
SSY; PROGM 119825000, SS REMOVEABLE HARD DRIVE
RD DRIVE, 2.5 INCH REMOVABLE
RIVE BAY FRAME TOP
HINE; 6-32 X 0.312 L, PNH, STEEL, ZINC FINISH, T15
BRACKET
Y; SATA COMBO, HARD DRIVE CABLE WITH LATCH
WR; DISCRETE, DIG INTERFACE, 2X10, 18AWG; SAFETY CONTROLLED
PWR; DISCRETE, DIG INTERFACE, 2X6, 20AWG; SAFETY CONTROLLED
SP; IDC, RIBBON, AUDIO COM Express PC TO DIG INTERF, 2X5, 2MM;
48 SPECMONB Series Service Manual
Replaceable parts
Figure 8: Power supply and removable hard drive
SPECMONB Series Service Manual 49
Replaceable parts
Table 22: Upper
deck fans, misc. cables
Tektronix Fig. & index number
9-1 211-1050-00 16
-2
-3 174-5212-0
-4 174-5201-00 1
-5
-6 407-5055-00 1
-7
-8 407-5480-00 1
-9 174-5066-00 2
part
number
436-0424-00 1
119-7182-00 2
407-5062-00 1
213-1061-00 2
119-7172-00 1
Serial no. effective
0
Serial no. discont'd Qty Name & description
SCREW,MACHINE; 6-32 X 0.312 L,PNH, STEEL, ZINC FINISH, T10, TORX
ASSY,FAN TRAY; WITH FANS MOUNTED (UPPER DECK); SAFETY CONTROLLED
FAN, TUBEAXIAL; 12VDC, 0.40A, 4.80W, 2500RPM, 100.6CFM, 120MM, LEADS W/CONN; SAFETY CONTR
BRACKET; FA 436-0424-00)
1
CA ASSY,SP; IDC, RIBBON, CONTROL LINES, BULKHEAD TO RF INTERFACE, 2X7,0.100 CTR SAFETY CONTROLLED
CA ASSY,SP; IDC, RIBBON, GPIB, DIG INTF TO REAR PANEL; SAFETY CONTROLLED
JACKSCREW; 6-32 EXT THD, M3.5 X 0.6-6 INT THD, 410 SS
BRACKET ASSY; SPEAKER
SPEAKER; DYNAMIC; 28MM DIA, 8 OHM, 600-7KHZ, MYLAR CONE, MG ELECT 288BB20 W
BRACKET
CA ASSY,
OLLED (SUBPARTS OF 436-0424-00)
N MOUNTING,UPPER DECK; SAFETY CONTROLLED (SUBPART OF
ITH 28 INCH CABLE
; BNC ADAPTER
RF,FLEX-COAX; FRONT PANEL ACQ
50 SPECMONB Series Service Manual
Replaceable parts
Figure 9: Upper deck fans, misc. cables
SPECMONB Series Service Manual 51
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