Tektronix WFM5250 User manual

xx

WFM5250

Waveform Monitor

ZZZ

Service Manual

*P077080000*

077-0800-00

WFM5250

Waveform Monitor

ZZZ

Service Manual

xx

Warning

The servicing instructions ar

e for use by qualiﬁed personnel

only. To avoid personal injury, do not perform any servicing

unless you are qualiﬁed to do s

o. Refer to all safety summ aries

prior to performing service.

www.tektronix.com

077-0800-00

or suppliers, and are protected by national copyright laws and international treaty provisions.

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication

supersedes that in all previously published material. Speciﬁcations and price change privileges r ese rve d.

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

n, OR 97077

USA

For product information, sales, service, and technical s uppor t:

In North A merica, call 1-800-833-9200.

Worldwide, visit www.tektronix.com to ﬁnd contacts in your area.

Warranty

Tektronix warrants that this product will be free from defects in materials and workmanship for a p eriod of o ne (1)

year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its

option, either will repair the defective product without charge for parts and labor, or will provide a replacement

in exchange for the defective product. Parts, mo dules and replacement pr oducts used by Tektronix for warranty

work may be n

ew or reconditioned to like n ew performance. All replaced parts, modules and products become

the property of Tektronix.

In order to o

btain service under this warranty, Customer must notify Tektronix of the defect before the expiration of

the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible

for packaging and shipping the defective product to the service center designated by Tektronix, with shipping

charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within

the country in which the Tektronix service center is located. Customer shall be responsible for paying a ll shipping

charges, du ties, taxes, a nd any othe r charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate

maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage

result

ing from attempts by personnel other than Tektronix representatives to install, repair or service the product;

b) to repair damage resulting from improper use or connection to incom patible equipment; c) to repair any damage

or malfunction caused by the use of non-Tektronix supplies; or d) to service a product that has been modiﬁed or

integrated with other products when the e ffect of such modiﬁcation or integration increases the time or difﬁculty

of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF A NY

OTHER WARRANTIES, EXPRESS OR IMPLIED . TEKTRONIX AND ITS VENDORS DISCLAIM ANY

IMPLIED WARRANTIES OF MERC HAN TABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

TEK

TRONIX' RESPONSIBILITY TO REPA IR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE

AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREA CH O F THIS WARRANTY.

TEKTRONIX AND ITS VENDOR S WIL L N OT BE LIABLE FOR ANY IN DIRECT, SPECIAL, INCIDEN TAL,

OR CONSEQUENTIAL DAMAGES IRR ESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR H AS

ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

[W2 – 15AUG04]

Table of Contents

Important safety information ...................................................................................... v

General safety summary ...................................................................................... v

Service safety summary..................................................................................... vii

Terms in this manual ........................................................................................ vii

Symbols and terms on the product......................................................................... viii

Preface .............................................................................................................. ix

Manual Conventions.......................................................................................... ix

Related Manuals .............................................................................................. ix

Introduction ......................................................................................................... 1

Service Strategy................................................................................................ 1

Speciﬁcations................................................................................................... 1

Performance Veriﬁcation...................................................................................... 1

Options and Accessories ...................................................................................... 1

Conﬁgurations.................................................................................................. 1

Hardware Installation.......................................................................................... 1

Product Upgrade ............................................................................................... 2

Operating Information......................................................................................... 2

Theory of Operation................................................................................................ 3

Video I/O Board................................................................................................ 5

REF I/O Board ................................................................................................. 5

FPGA Board.................................................................................................... 5

CPU Board ..................................................................................................... 6

Front Panel ..................................................................................................... 6

Audio (Option AUD).......................................................................................... 6

Fan Control..................................................................................................... 7

Power Supply and Distribution............................................................................... 7

General Maintenance............................................................................................... 9

Preventing ESD ................................................................................................ 9

Inspection and Cleaning...................................................................................... 11

Troubleshooting.................................................................................................... 14

Getting Started ............................................................ .. .. ................................ 14

Symptoms and Causes ....................................................................................... 16

Detailed Troubleshooting Procedures ...................................................................... 18

Removal and Replacement Procedures ......................................................................... 25

Preparation..................................................................................................... 25

Module Removal.............................................................................................. 27

Repackaging Instructions......................................................................................... 35

Packaging...................................................................................................... 35

Shipping to the Service Center .............................................................................. 35

WFM5250 Waveform Monitor Service Manual i

Table of Contents

Replaceable Pa

rts.................................................................................................. 37

Parts Ordering Information .................................................................................. 37

Using the Replaceable Parts Lists........................................................................... 38

ii WFM5250 Waveform Monitor Service Manual

List of Figures

Figure 1: Instrument block diagram ............................................................................. 4

Figure 2: Video I/O board ........................................................................................ 20

Figure 3: WFM5250 rear panel.................................................................................. 27

Figure 4: XL

R connector ground clip........................................................................... 28

Figure 5: Screws that attach fan bracket to main chassis ..................................................... 30

Figure 6: Fan screw placement .................................................................................. 31

Figure 7: CPU board screw and spacer posts................................................................... 32

Figure 8: Correct spring clip position ........................................................................... 33

Figure 9: Screws that attach LCD module to main chassis ................................................... 34

Figure 1

0: WFM5250 Exploded View .......................................................................... 41

WFM5250 Waveform Monitor Service Manual iii

Table of Contents

List of Tables

Table i: Related documentation.................................................................................. ix

Table 1: Ext

ernal inspection checklist........................................................................... 12

Table 2: Internal inspection checklist ........................................................................... 13

Table 3: Required test equipment................................................................................ 15

Table 4: Symptoms and causes .................................................................................. 16

Table 5: Video I/O board basic supplies ........................................................................ 19

Table 6: Tools required for module removal ................................................................... 26

Table 7: R

eplaceable parts list ................................................................................... 39

iv WFM5250 Waveform Monitor 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 provided a t

the end of this section. (See page vii, Service safety summary.)

General safety summary

Use the product only as speciﬁed. Review the following safety precautions to

avoid injury and prevent damage to this product or any products connected to it.

Carefully read all instructions. Retain these instructions for future reference.

Comply with local and n ational safety c odes.

For correct and safe operation of the product, it is essential that you follow

generally accepted safety p rocedures in addition to the safety precautions speciﬁed

in this manual.

The product is designed to be u sed by trained personnel only.

Only qualiﬁed personnel who are aware of the hazards involved should remove

the c over 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 int

ended for detection of hazardous voltages.

Use personal protective equipment to prevent shock and arc blast injury where

hazardous live conductors are exposed.

While using this product, you may need to access other parts of a larger system.

Read the safety sections of the other component manuals for warnings and

cautions related to operating the system.

When incorporating this equipment into a system , the safety of that system is the

responsibility of the a ssembler of the system.

To avoid ﬁre or personal

injury

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 indirectly grounded through the grounding

conductor of the mainframe 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.

WFM5250 Waveform Monitor Service Manual v

Important safety information

Do not disable t

he power cord grounding connection.

Power disconnect. The power cord disconnects the product from the power

source. See instructions for the location. Do not p osition the equipment so that

it is difﬁcult to operate the power cord; it must remain accessible to the user at

all times to allow for quick disconnection if needed.

Use proper A C adapter. Use only the AC adap ter speciﬁed for this product.

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 bef ore making connections to the product.

Do not apply a potential to any terminal, including the commo n terminal, that

exceeds the m aximum rating of that terminal.

Do not operate without covers. Do not operate this product with covers or panels

removed, or with the case open. Hazardous voltage exposure is possible.

Avoid exposed circuitry. Do not touch exposed connections and components

when power is present .

Do not operate with suspected failures. If you suspect that there is damage to this

product, have it inspected by qualiﬁed service personnel.

Disable the product if it is damaged. Do not use the product if it is damaged

or operates incorrectly. If in doubt about safety of the product, turn it off and

disconnect the power cord. Clearly mark the product to prevent its further

operation.

Before use, inspect voltage probes, test lea ds, and acces sories for mec hanical

damage and replace when damaged. Do not use probes or test leads if they are

damaged, if there is exposed metal, or if a wear indicator shows.

Examine the exterior of the product before you use it. Look for cracks or m issing

pieces.

Use o nly speciﬁed replacement parts.

Replace batteries properly. Replace batteries only with the speciﬁed type and

rating.

Recharge batteries properly. Recharge batteries for the recommended charge

cycle only.

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.

vi WFM5250 Waveform Monitor Service Manual

Important safety information

Do not operate i

n an explosive atmosphere.

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 p rovided 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.

Use only the Tektronix rackmount hardware speciﬁed for this product.

Servicesafetysummary

The Service safety sum mary section contains additional information required to

safely perform service on the product. Only qualiﬁed personnel should perform

service procedures. Read this Service safety summary and the General safety

summary before performing any service procedur es.

To avoid electric shock. Do not touch ex posed connections.

Do not service alone. Do not perform internal service or a djustm ents of this

product unless another person capable of rendering ﬁrst aid and resuscitation is

present.

Disconnect power. To avoid electric shock, switch off the product power and

disconnect the power cord from the mains power before removing any c overs or

panels, or opening the case for servicing.

Use care when servicing with power on. Dangerous voltages or currents m ay exist

in this product. Disconnect power, remove battery (if applicable), and disconnect

test leads before removing protective panels, soldering, or replacing components.

Terms in this manual

These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result

in injury or loss of life.

CAUTION. Caution statements identify conditions or practices that could result in

damage to this product or other property.

WFM5250 Waveform Monitor Service Manual vii

Important safety information

Symbols and te

rms on the product

These terms may appear on the product:

DANGER indicates an injury haza rd immediately acces sible as you read

the marking.

WARNING indicates an injury hazard not imm ediately accessible as you

read the marking.

CAUTION indicates a hazard to property including the product.

When this symbol is marked on the product, be sure to consult the manual

to ﬁnd out the nature of the potential hazards and any actions which have to

betakentoavoidthem.(Thissymbolmayalsobeusedtorefertheuserto

ratings in the manual.)

The follo

wing symbol(s) may appear on the product:

viii WFM5250 Waveform Monitor Service Manual

Preface

This manual supports servicing to the module level of the WFM5250 Waveform

Monitor, which processes video signals for display on an internal XGA LCD. The

instrument i

s used as a monitor in broadcasting, production, and post-production

environmen ts.

This manual

explains how to troubleshoot and service the instrument to the

module level. The manual is divided into the following sections:

Introduct

ion provides a general product description and tells where to ﬁnd

product installation information.

Theory of

Operation provides descriptions of the m odules of the instrument.

Adjustment Procedures details the adjustments to perform if the instrument

is out of

speciﬁcation.

Maintenance tells you how to troubleshoot the product to the module level,

and rep

lace the modules.

Replaceable Parts illustrates the replaceable modules and mechanical parts,

and pr

ovides replacement part numbers.

Manual Conventions

The f

ollowing terms and conventions are used throughout this manual:

The term “instrument” is used interchangeably with the m ore formal term

“WF

M5250 Waveform Monitor.”

Related Manuals

Yo

u should h ave access to the following manuals when servicing this product.

Table i: Related docu me ntation

Item Purpose Location

Installation and Safety Instructions Provides safety and compliance

information a long with hardware

installation instructions to present the

associated safety warnings. This m anual

is available in English, Japanese,

Russian, and Simpliﬁed Chinese

Printed manual

www.tektronix.com/downloads

Online Help

In-depth operation and UI help

On the instrument

User Manual Provides operation and application

information

Product Documentation CD

www.tektronix.com/downloads

WFM5250 Waveform Monitor Service Manual ix

Preface

Table i: Related documentation (cont.)

Item Purpose Location

Speciﬁcations and Performance

Veriﬁcation Technical Reference

Procedure for checking performance and

list of speciﬁcations

Product Documentation CD

www.tektronix.com/downloads

System Integration Technical Reference Provides information for system

integrators who are designing systems

where this product will be deployed.

Product Documentation CD

www.tektronix.com/downloads

x WFM5250 Waveform Monitor Service Manual

Introduction

The WFM5250 Waveform Monitor provides a powerful monitoring solution for

broadcast, production, and post-production environments.

Service Strategy

These products are repaired to the module level at sel

ected Tektronix service

centers. Repair includes functional veriﬁcation of the product. Component level

repair by the customer is not supported.

Speciﬁcations

The speciﬁcations for this product are found in the Speciﬁcations and Performance

Veriﬁcation Technical Reference document. (See Table i.)

Performance Veriﬁcation

The Performance Veriﬁcation procedures for this product are found in the

Speciﬁcations and Performance Veriﬁcation Technical Reference docum ent. (See

Table i.)

Options and Accessories

The lists of options and accessories for this product are found in the user manual,

located on the Product Documentation CD. (See Table i.)

Conﬁgurations

The base instrument h as no hardware upgrade options. Software options are

available to add capabilities such as audio and advanced gam ut monitoring. For a

complete list of options, refer to the user manual. (See Table i.)

Hardware Installation

The instrument is shipped in a one-piece, unpainted, bathtub s haped, EMI shell.

It can be used as-is or installed into a hard carry case, soft c arry case (requires

hard carry case), or rack m ount cabinet. For instructions about installation into a

rack mount cabinet, refer to the System Integration Technical Reference m anua l.

(See Table i.) You can also use the rack adapter instructions, which are included

with your Tektronix rack mount kit.

WFM5250 Waveform Monitor Service Manual 1

Introduction

Product Upgrade

Software upgrades are available for all products as free software downloads

from the Tektronix Web site. The user manual includes instructions for updating

product software. To purchase additional features and capabilities f or your

instrument, contact Tektronix for more information on purchasable options.

Operating Information

For operating instructions, refer to the u ser manual. For more detailed refere nce

informati

on, refer to the instrument Online help. (Press the Help buttononthe

instrument front panel and then use the General knob, up/down arrow keys, and

SEL button to n avigate throu gh the topics.)

Power-On Procedure

1. Connect

the supplied power cord to the external AC adapter and connect its

XLR output connector to the instrument.

2. Press t

he power button on the instrument front-panel to turn on the instrument.

3. Wait for the system to complete its power-on self-tests.

Power

-Off Procedure

1. Press the power button on the instrument front-panel to turn the instrumen t off.

2. To remove power completely, disconnect the power cord from the AC adapter.

NOTE. The power button o n the front-panel does not disconnect mains power.

Only the power cord at the AC adapter can disconnect mains power.

2 WFM5250 Waveform Monitor Service Manual

Theory of Operation

The WFM5250 includes extensive standard capabilities, which can be augmented

by adding various options.

This instrument uses an internal DV I-I monitor for the display, and has an output

to drive an external monitor with the same display. It also h as outputs to drive a

serial digi

tal picture monitor.

This theory of operation is based on the High-level Block diagram. (See Figure 1.)

The blo ck dia gram reﬂ ects the physical arrangem en t of circuit boards, w ith the

CPU board at the bottom, the Video I/O board in the center, and the FPGA board

at the top

. Connectors to the External Reference and Front Panel boards are

shown. Power Distribution is not shown in the block diagram but is c overed at

the end of this section.

The primary functions on the CPU board are:

Contro

l processor kernel

Front panel interface

Display backlight

Fan controller

Headphones output a nd control

USB and network connections

Var

ious secondary power supplies

The primary functions on the Video I/O board are:

SDI Input signal conditioning

HDMI Input signal conditioning

HDMI output (loop-through of input)

Input power conditioning and control

The primary functions on the FPGA board are:

Serial digital input processing

Waveform and p icture processing for display

DVI output

Reference input data processing

SDI output generation

WFM5250 Waveform Monitor Service Manual 3

Theory of Operation

Figure 1: Instrument block diagram

4 WFM5250 Waveform Monitor Service Manual

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Tektronix WFM5250 User manual

Tektronix WFM5250 User manual

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