Tektronix TM 502A Manual de usuario

•

Instruction Manual

Tektronix

TM502A

Power Module

070-6502-01

Warning

The servicing instructions are for use by qualified

personnel only. To avoid personal injury, do not

perform any servicing unless you are qualified to

do so. Refer to the Safety Summary prior to

performing service.

Pleasecheckforchangeinformationat the rear

ofthismanual.

First Printing: January I993

Revised Printing: December 1993

Instrument Serial Numbers

Each instrument manufactured by Tektronix has a serial number on a panel insert or tag, or stamped on the

chassis. The first letter in the serial number designates the country of manufacture. The last five digits of the

serial number are assigned sequentially and are unique to each instrument. Those manufactured in the

United States have six unique digits. The country of manufacture is identified as follows:

B010000

E200000

J300000

H700000

Tektronix, Inc., Beaverton, Oregon, USA

Tektronix United Kingdom, Ltd., London

Sony/Tektronix, Japan

Tektronix Holland, NV,Heerenveen, The Netherlands

Instruments manufactured for Tektronix by external vendors outside the United States are assigned a two digit

alpha code to identify the country of manufacture (e.g., JP for Japan, HK for Hong Kong, ILfor Israel, etc.).

Tektronix, Inc., P.O.Box 500, Beaverton, OR 97077

Printed in U.S.A.

patents, issued and pending. The following are registered trademarks: TEKTRONIX, TEK, TEKPROBE, and

SCOPE-MOBILE.

•

WARRANTY

Tektronixwarrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the

date of shipment. Ifany 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.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty

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

shipping the defective product to the service center designated by Tektronix, 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 all shipping charges, duties, taxes, and any other charges for

products returned to any other locations.

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

and care. Tektronixshall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by

personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from

improper use or connection to incompatible equipment; or c) to service a product that has been modified or integrated with

other products when the effect of such modification or integration increases the time or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BYTEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER

WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO REPAIR OR

REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR

BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL,

INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS

ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES .

•

Specification

Operating Instructions

Maintenance

TM 502A Instruction Manual

Contents

Operators Safety Summary .................................. .

Service Safety Summary .................................... .

Specification ............................................... .

Instrument Description .................................. .

Performance Conditions ................................. .

Operating Instructions ...................................... .

Power Source .......•...................................

Power Usage/ Loading Considerations ................... .

Line Voltage Selection/Fuse Replacement ................ .

Handleffilt Stand Installation ............................ .

Operating Temperature .................................. .

Power Modules .......•..................................

Family Compatibility .••..................................

Module Installation ....•..................................

Plug-in Retainer Clip Information ....................... .

Power-on Procedure .................................. .

Maintenance ..........•.....................................

Static Sensitive Components ............................ .

Cleaning ............................................... .

Obtaining Replacement Parts ............................ .

Preventive Maintenance and Calibration .................. .

Soldering Techniques ................................... .

Removing the Cabinet ................................... .

Removing the Circuit Board ............................. .

Removing the Voltage Selector/Fuse Holder Assembly .... .

Replacing the Series Pass Transistor ..................... .

Packaging information .................................. .

iii

1-1

2-1

2-3

2-4

2-5

3-1

3-2

3-3

3-4

3-5

3-6

Options

Replaceable Electrical Parts

Diagrams and Circuit Board Illustrations

Symbols ...••...........................................

Component Values ...................................... .

Graphic Items and Special Symbols Used in This Manual .. .

Component Locator Diagrams ........................... .

Replaceable Mechanical Parts

Index

6-1

6-2

ii Contents

•

Symbols and Terms

TM 502A Instruction Manual

Operators Safety Summary

Pleasetake a moment to review these safety precautions. They are provided

for your protection and to prevent damage to the power module. This safety

information applies to all operators and service personnel.

These two terms appear in manuals:

•

statements identify conditions or practices that could result in

damage to the equipment or other property .

• IwARNtNGIstatements identify conditions or practices that could result in

personal injury or loss of life.

These two terms appear on equipment:

• CAUTIONindicates a personal injury hazard not immediately accessible

as one reads the marking, or a hazard to property including the equip-

ment itself.

• DANGERindicates a personal injury hazard immediately accessible as

one reads the marking .

This symbol appears in manuals:

Static-Sensitive Devices

These symbols appear on equipment:

DANGER

High Voltage Protective

ground (earth)

terminal

This symbol indicates where

applicable cautionary or other

information is to be found .

ATTENTION

Referto

manual

iii

Specific Precautions

Observe all of these precautions to ensure your personal safety and to

prevent damage to either the power module or equipment connected to it.

Power Source

The power module is intended to operate from a power source that will not

apply more than 250 Vrms between the supply conductors or between either

supply conductor and ground. A protective ground connection, through the

grounding conductor in the power cord, is essential for safe system opera-

tion.

Grounding the Power Module

The power module is grounded through the power cord. To avoid electric

shock, plug the power cord into a properly wired receptacle where earth

ground has been verified by a qualified service person. Do this before mak-

ing connections to the input or output terminals of the power module.

Without the protective ground connection, all parts of the power module are

potential shock hazards. This includes knobs and controls that may appear

to be insulators.

Use the Proper Power Cord

Use only the power cord and connector specified for your product. Use only

a power cord that is in good condition.

Use the Proper Fuse

Toavoid fire hazard, use only the fuse specified in the parts list for your

product, matched by type, voltage rating, and current rating.

Do Not Remove Covers or Panels

Toavoid personal injury, do not operate the power module without the

panels or covers.

Take Antistatic Precautions

Wear an antistatic grounding wrist strap when working with the input con-

nectors on the power module.

Do Not Operate in Explosive Atmospheres

The power module provides no explosion protection from static discharges

or arcing components. Do not operate the power module in an atmosphere

of explosive gases.

Safety

•

• TM 502A Instruction Manual

Service Safety Summary

For Qualified Service Personnel Only

Refer also to the preceding Operators Safety Summary

Do Not Service Alone

Do not perform internal service or adjustment of this product unless another

person capable of rendering first aid and resuscitation is present.

Use Care When Servicing With Power On

Dangerous voltages may exist at several points in this product. Toavoid

personal injury, do not touch exposed connections and components while

power is on.

Disconnect power before removing protective panels, soldering, or replacing

components .

Power Source

The power module is intended to operate from a power source that will not

apply more than 250 Vrms between the supply conductors or between either

supply conductor and ground. A protective ground connection, through the

grounding conductor in the power cord, is essential for safe system opera-

tion.

vi Safety

•

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