Agilent 4263B Service Manual

Agilent

4263B LCR

Meter

Service Manual

This

manual

\Instruments

F

or

additional

applies

directly

important

Covered

SERIAL

to

instruments

information

by

This

NUMBERS

Manual"

with

serial number

about

serial

in

Chapter

numbers,

1of

this manual.

prex JP1KD

read

.

Agilent Part No. 04263-90033

Printed in JAPAN June 2000

Notice

The

information

This

document

reserved.

language

contains

No

part

without

contained

proprietary

of

this

the

prior

in

this

document

written

document

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may

be

consent

is

subject

that

is

photocopied,

of

the

Agilent T

to

change

protected

without

by

copyright.

reproduced,

echnologies Company

notice

or

translated

.

All

.

rights

are

to another

Agilent

T

echnologies

Component

1-3-2,

Hyogo

Murotani,

,

651-2241

T

est

Japan,

PGU-Kobe

Nishi-ku,

Japan

Ltd.

Kobe-shi,

c



Copyright 1996, 2000 Agilent Technologies Japan, Ltd.

Manual Printing

A

ugust

1996

:

:

:

:

:

:

:

:

June

2000

:

:

:

:

:

::

::

::

History

::

::

::

::

::

::

::

::

::

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::

:

:

:

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:

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:

:

:

:

::

::

::

::

:

First

Edition (part

:

:

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:

Second

Edition (part

number: 04263-90033)

number:

04263-90033)

iii

Safety Summary

The

following

service

W

ARNINGS

In

addition

,

and

elsewhere

it

general

repair

violates

safety

of this

safety standards

instrument.

The

A

with

gilent

these

T

echnologies Company

requirements

precautions must

instrument. F

in

this manual

.

ailure to

may impair

of design,

assumes no

be observed

comply with

the protection

manufacture,

liability for

during all

phases of

these precautions

provided by

and intended

the customer's

operation,

or with

the equipment.

use of

failure

the

to

comply

specic

Note

Ground

T

o

avoid

safety

DO

Do

not operate

electrical

Keep

The

electric

earth

NOT

instrument in

A

way

Operating

adjustments

with

the

power cable

with

the

power

circuits

DO

before

NOT

4263B

in

complies

IEC1010-1.

Instrument

shock

hazard,

ground

Operate

the

instrument

From

by

the

In

Live

personnel must

must

be made

connected.

cable

removed.

touching

Service

Or

supplied

An

such

not

by

them.

A

djust

with

INST

ALLA

TION

CA

4263B

the

instrument

power

is

INDOOR

cable

USE

chassis

with

product.

Explosive Atmosphere

in

the

an

environment

presence

of

ammable

constitutes

Circuits

remove

qualied

Under

T

o

avoid

instrument

maintenance

certain

injuries

covers

personnel.

conditions

,

always

Alone

TEGORY

and

cabinet

earth

blade

gasses

a

denite

.

Component

,

dangerous

disconnect

II

.

Do

and

must

or

safety

not

power

POLLUTION

be

connected

fumes

.

Operation

hazard.

replacement

replace

voltages

components

may

and

discharge

DEGREE

to

and

internal

exist

a

of

even

2

any

Do

not

attempt

aid

and

resuscitation,

DO

NOT

Because of the danger

perform unauthorized modications to

Technologies Sales and Service

internal

is

Substitute

service

or

adjustment

unless

another

present.

P

arts

Or

Modify

Instrument

of introducing additional hazards

the instrument. Return the instrument to a Agilent

Oce for service and repair to ensure that safety features are

person,

, do not install substitute parts or

maintained.

Dangerous Procedure W

Warnings

, such as the example below

arnings

, precede potentially dangerous procedures throughout

this manual. Instructions contained in the warnings must be followed.

Warning

Dangerous voltages, capable of causing death, are present in this

instrument. Use extreme caution when handling, testing, and adjusting

this instrument.

iv

capable

of

rendering

rst

Certication

Agilent

at

calibration

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echnology

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This

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the

time

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of

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Agilent

workmanship

certain

specied

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or

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pay

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Agilent

T

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property

of

components

repair

warranty

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all

shipping

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the

instrument,

period.

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installed

Company

shipment from

to

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other

International

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echnologies

for

a

period

listed

During

or

replace

service

or

. Buyer

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pay

charges

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warrants

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use

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on

that

or

software

certies that

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are

traceable

allowed by

Standards Organization

instrument

of

one

in

General

the warranty

products

repair

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shipping

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duties

charges

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instrument

instrument.

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or

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to the

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Information

period, Agilent

that prove

product

prepay

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taxes

its

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Agilent

rmware

this product

Technologies

United States

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date of

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to be

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will

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product

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its

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met its

published specications

further certies

National Institute

calibration facility

members.

defects in

shipment, except

this manual,

Technologies

the

Company

.

to

a

service

to

Agilent

to

returned

Buyer

to

Agilent

T

designated

programming

does

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or

error

that its

of Standards

,or

to the

material and

that

in

warranty

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facility

echnologies

.

However

T

echnologies

by

Agilent

instruction

that

free.

calibration

the

case

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shall

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for

at

its

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Agilent

,

Buyer

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from

when

the operation

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by

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The

foregoing

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misuse

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preparation

No

other

implied

by

operation

or

warranty

warranties

Of

W

arranty

warranty

Buyer

shall

,

Buyer-supplied

outside

maintenance

is

expressed

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merchantability

not

apply

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environmental

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or

to

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and

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v

Exclusive Remedies

The

remedies

shall

not

whether

be

liable

based

provided

for any

on

contract,

herein

direct, indirect,

Assistance

are buyer's

tort, or

sole and

special, incidental,

any other

exclusive remedies

legal theory

or consequential

.

.A

gilent T

echnologies

damages,

Product

Agilent

F

or

any

A

ddresses

maintenance

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assistance

are

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products

contact

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customer

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assistance

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vi

Safety Symbols

General

denitions

Instruction

necessary

Alternating

Direct

On

O

Frame

This

condition

result

This

condition

result

Note

practice

of

safety

current.

(Supply).

(Supply).

or

W

arning

in injury

Caution

in

damage

denotes

,

condition

symbols used

manual

for

the

user

current.

chassis

terminal

sign

or

the

like

or

death

sign

or

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like

to

important

on equipment

symbol:

to refer

denotes

,

which,

to

denotes a

,

which,

or

destruction

information.

or

the

like

the

product is

to the

a

hazard.

if

not

correctly

personnel.

hazard.

if

not

correctly

of

,

which

or in

manuals are

marked with

instruction manual.

It

calls attention

performed or

It

calls

attention

to

performed

part

or

all

of

the

product.

It

calls

attention

is

essential

to

highlight.

listed below

this symbol

to a

procedure

adhered

a

procedure

or

adhered

to

a

procedure

.

when it

,

practice

to

,

could

,

practice

to

,

could

,

is

,

,

vii

Documentation Map

Operation

Operation

Japanese

Manual

edition)

conformance

Service

Service

repair

How

This is

repair

Chapter

Chapter

Manual

Manual

the

4263B

T

o

Use

the

Service

information,

1

1

gives

recommended

Chapter

2

Manual

(Agilent P

explains

to

published

(Agilent

art Number:

specications

specications

P

art

.

This

Manual

General

Manual

for

and

consists

Information

general information

equipment

A

djustments

for

Number:

the

4263B

of

the

for servicing

adjustments

04263-90010 for

,

basic

measurement explanations

.

04263-90033)

LCR

Meter

following

four

the

and

troubleshooting.

explains

.

This

chapters

4263B

English edition,

how

to

adjust,

manual

contains

.

.

This

chapter

04263-97010 for

,and

how to

troubleshoot,

adjustments

lists

the

verify

and

and

Chapter

specications

Chapter

Chapter

includes

Chapter

Chapter

theory of

2

describes

after

3

Assembly

3

provides

replaceable

4

Troubleshooting

4

provides

the

adjustments

it

has

been

repaired,

Replacement

the information

assembly

the

information

lists

,

required to

or it

on replacing

,

and removal

on

troubleshooting

ensure

fails

the

performance

the 4263B

and installation

the

that

assemblies.

4263B

operation and information on faulty assembly isolation.

the

4263B

tests

procedures.

.

The information

is

within

.

The

information

its

published

includes

Appendix A Manual Changes

Appendix A contains

4263Bs manufactured before

Appendix B Default Jumper

manual changes and provides information for using this manual with

the printing date of the manual.

and Switch Settings

Appendix B describes the settings of the jumpers and switches on the 4263B A2 CPU Board

Assembly. The information is required when the A2 assembly is replaced.

viii

Contents

1.

General

Introduction

Instruments

Required

2.

A

djustments

Introduction

Safety

Required

A

djustment

Adjustable

F

actory-Selected

EEPROM

Related

A

djustment

A

djustments

A

Program

Making

Dening

Program

Signal

Impedance

Impedance

Impedance

Impedance

Source

Equipment

Setup

Equipment

Setup

Equipment

Setup

Information

.

.

.

.

Covered

Equipment

.

.

.

.

Consideration

Equipment

T

ools

Components .

Write

djustments

Program

Installation

a

the

Execution

Procedure

.

.

.

.

..

.

Components

Protect

W

orking

Conguration

Level

.

.

.

.

..

Measurement

.

.

.

.

..

Measurement

..

..

.

Measurement 2m

Measurement

.

.

.

.

by

This

.

.

.

.

.

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.

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.

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Switch

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.

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Copy

.

.

.

References

A

djustment

.

.

.

.

..

.

0m

..

..

..

..

1m

..

.

.

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.

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.

4m

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.

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Manual

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A

djustment

..

..

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A

djustment

.

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Adjustment

A

djustment

.

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..

..

..

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1-1

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..

..

..

..

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1-1

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..

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1-2

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2-1

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2-1

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2-2

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2-2

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2-2

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2-2

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2-2

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2-3

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2-5

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2-5

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2-5

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2-5

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2-7

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2-7

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2-7

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2-7

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2-8

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2-8

. 2-8

.

2-9

.

2-9

.

2-9

. 2-10

.

2-10

3. Assembly Replacement

Introduction . . . . . . . . . . . . . . . . . . . . . . .

Ordering Information

Restored

Replacing

Replaceable Assembly List

Replaceable Mechanical P

Disassembly Procedures ...... ...... ...... ...... ... 3-9

Tools and Fasteners ............................ 3-9

Cover Removal .... ...... ...... ...... ...... .. 3-9

A1 Main Board Removal .......................... 3-10

A2 CPU Board Assembly Removal ..................... 3-10

Exchange Assemblies

the A2 CPU Board Assembly

Removal Procedure ........ ...... ...... ..... .. 3-10

Removal Procedure ........ ...... ...... ..... .. 3-10

...... ...... ...... .....

...... ..... ...... ......

....................

........

arts List . . . . . . .

..................

...... ...... ....

...... ....

.....

3-1

3-1

. 3-1

3-2

3-2

3-5

Contents-1

A5

AC

Removal

Keyboard

Removal

LCD

Assembly Removal

Removal

BNC

Connector

Removal

4.

Troubleshooting

Introduction

Safety

Required

After

Service

Theory

Overall

Overall

Analog

Signal

Transducer

V

ector

Transformer

Digital

P

ower

Troubleshooting

Check

Check

Check

Check

Check

Check

Check

Check

Check

Check

Check

Check

Check

Inlet Board

Procedure .

Assembly Removal

Procedure .

Procedure .

Removal

Procedure

.

.

.

.

Considerations

Equipment

Product

of

Operation

Measurement

Block

Diagram

Section

Source

Ratio

Section

Supply

Procedure

1,

2,

3,

4,

5, CPU

6, CPU

7,

8,

9,

10,

11,

12,

.

Section

Section

Detector

P

arameter

.

..

Section .

.

.

References

DC-DC

LCD

Displays

LCD

Operates

Any

Error

Related

P

ower

Any

Error

CPU

Fuse

Fuse

and

DC-DC

DC-DC

Transformer

Assembly

.

.

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Safety

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Theory

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Section

Measurement

..

.

..

..

..

Converter

Anything?

Correctly?

Message

Error

LED

Code

High

Line

Switch

Converter

Converter

Secondary

Removal

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Checks

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Output

on

Message?

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on

LED?

Lead

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Input

Open

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LCD?

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V

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Output

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.

. 3-11

.

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..

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..

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..

.

. 4-14

..

.

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.

.

.

.

. 4-18

. 4-19

3-10

3-11

3-11

3-11

3-11

3-11

4-1

4-1

4-1

4-2

4-3

4-3

4-4

4-5

4-6

4-7

4-8

4-8

4-9

4-11

4-13

4-13

4-14

4-14

4-14

4-15

4-16

4-16

4-17

A.

Manual

Introduction . . . . . . . . .

Manual Changes . . . . . . . . .

B. Default Jumper and Switch Settings

Introduction . . . . . . . . . . . . . . . . . . . . .

Jumper and Switch Settings

Index

Contents-2

Changes

........................

......................

...... ...... ...... .

............

......

A

-1

A-1

B-1

B-1

Figures

1-1. Serial

2-1. A

2-2. Signal

2-3. Impedance

2-4. Impedance

3-1.

4-1.

4-2.

4-3.

4-4.

4-5.

4-6.

4-7. Basic

4-8.

4-9.

4-10.

4-11.

4-12.

4-13.

4-14.

4-15.

4-16.

B-1.

Number

djustment

Source

Cover

V

4263B

Analog

Signal

Transducer

V

Digital

P

Troubleshooting

DC-DC

CPU

Location

DC-DC

DC-DC

Transformer

Jumper

Removal

oltage

Overall

Source

ector

Transformer

ower

Board

Program

Level

Measurement

Measurement

Current

Block

Section

Section

Block

Ratio

Detector

Section

Supply

Converter

Converter

Converter

Assembly

of

High

and

Section

Secondary

Switch

Label

Block

.

Flow

A

djustment

.

.

.

Ratio

Measurement

Diagram

Block

Diagram

Block

Diagram

Block

Measurement

Diagram

Block

Flow

Chart

Output

LED

Lead

Input

Output

Settings

.

.

.

.

0m

1m

.

.

.

Diagram

.

Diagram

V

oltage

Light

of

A2F1

V

oltage

Connector

V

oltage

.

.

.

.

.

.

Setup

A

djustment

A

djustment

.

.

.

.

.

.

.

.

.

.

.

Setup

.

.

Diagram

.

.

.

Check

Sequence

Fuse

Check

Check

.

.

.

.

.

.

.

.

.

.

.

.

.

Setup

Setup

.

.

.

.

Principle

.

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.

1-1

.

2-3

. 2-7

. 2-8

. 2-9

.

3-9

4-3

.

4-4

.

4-5

4-6

.

4-7

.

4-8

. 4-8

.

4-9

.

4-10

.

4-12

.

4-13

.

4-15

.

4-16

.

4-17

.

4-18

.

4-19

.

B-1

Tables

1-1.

Required

1-2.

Required

2-1. Related A

3-1. Replaceable Major Assembly List

3-2. A2 CPU Board Assembly

3-3. Replaceable Assembly List

3-4. Replaceable Mechanical P

3-5. Replaceable Mechanical P

3-6. Replaceable Mechanical P

3-7. Replaceable Mechanical P

4-1. DC-DC Converter Output Voltage (Connected) . . . . . . . . . . . . . . . . 4-13

4-2. DC-DC Converter Open Output Voltages . . . . . . . . . . . . . . . . . . . 4-18

A-1. Manual Changes by Serial Number . ...... ..... ...... ... A-1

Equipment

Language

djustments . . . . . . . . .

.

.

.

.

..

..

Extensions

, Replaceable Assembly List . . . . . . . . . . . . .

artsList1..... ...... ...... .

artsList2..... ...... ...... .

arts List 3 . . .

arts List 4 . . . .

.

.

.

.................

...... ...... ...... ..

..

..

..

..

..

.

.

.

.

.

.

.

.

..

.

.

.

.

.

.

.

.

.

.

..

.

.

.

.

...................

.....

.....

...

...

...... ...... ......

.................

.

.

.

.

Contents-3

1-2

1-2

2-2

3-3

3-4

3-4

3-5

3-6

3-7

3-8

1

General

Information

Introduction

This

chapter provides

equipment

for the

Instruments

Agilent

the

characters

T

serial

echnologies

number

are

the

information on

adjustments and

Covered

uses

label

(

Figure

serial

prex,

by

a

two-section,

1-1

and

instruments covered

troubleshooting.

This

)

attached to

the

Manual

nine

character serial

the

last

ve

digits

by this

number

instrument's

are

the

sux.

manual

rear

which

panel.

and

is

The

required

printed

rst

on

ve

Figure

An

instrument

number

the

prex

instrument

instrument

manual

manual

part

to

In addition to

errors (Errata) in

Technologies recommends that

manufactured

that

is

dierent

may

be

number

the newer

is

not

accompanied

.

This sheet

instrument.

listed

from

after

on

change information, the supplement may contain information for correcting

the manual. T

o keep this manual as current and accurate as possible

you periodically request the latest Manual Changes supplement.

The supplement for this manual is identied by this manual's printing date and its

both of which appear on the manual's title page

available from Agilent T

echnologies. If the serial prex or number of an instrument

than that on the title page of this manual, see

1-1.

Serial

the

printing

the

title

page

those

described

by

a

yellow

Manual

contains \change

Appendix A, Manual Changes

Number

date

of

.

This

in

this

Changes

information" that

Label

this

manual

unlisted serial

manual.

The

supplement

may have

a serial

number prex

manual

for this

or

have

explains how

a dierent

to

part number

. Complimentary copies of the supplement

.F

or information

concerning, a serial number prex that is not listed on the title page or in the Manual

supplement, contact the nearest Agilent Technologies oce.

indicates

new

adapt

, Agilent

is lower

Change

the

,

are

General Information 1-1

Required Equipment

T

able

1-1

lists

lists

the

the required

required

language

equipment for

extensions to

T

able

adjusting and

be used

1-1.

Required

with the

Equipment

troubleshooting the

adjustment program.

4263B.

Table

1-2

Equipment Requirements Recommended

Multimeter A

Standard

Open T

Short

Resistors

ermination

T

ermination

Computer No

Operating

A

djustment

System

Program

C

V

A

ccuracy:

(at

100

kHz)

No

Substitute

No Substitute 42090A

No

Substitute

Substitute

B

ASIC

5.1

or

higher

No

substitute

Cable BNC(m)-BNC(m)

Dual

Banana-BNC(m)

T

est

A

dapter

1

A

djustment

2

Troubleshooting

3

This

model

4

Excluding

is

the

also

HP

T

T

BNC(f)-BNC(f)

included

9826A

est

est

in

Leads

Leads

Leads

the

(1

(2

(4

42100A,

m)

m)

m)

F

<

Cable

A

dapter

our

2.5%

T

erminal

Cable

3458A

42030A 1 A

42091A

HP

9000

RAM



HP

98616A

Agilent

Agilent

Agilent

16048A 1 A

16048D 1 A

16048E 1 A

Agilent

P

air

Resistor

Model

or

3478A

3

3

series

200

4M

bytes

PN

04263-65005

PN 8120-1839

PN

11001-60001

PN

1250-0080

Set

or

300

4

Qty.Use

1 A1,

1 A

1 A

1 A

1 A

1 A

1 A

1 A

4 A

2

T

Name V

CLOCK

COMPLEX 5.1

CRTA 5.1

CRTX 5.1

1

This language extension depends on the mass

1-2 General Information

er

5.0

Table

1-2.

Name V

.

CS80

EDIT 5.1

ERR 5.1

FGPIB 5.0

Required

er

5.0

Language

Name V

.

1

GRAPH

GRAPHX 5.2

GPIB 5.0

IO 5.1

storage type used.

Extensions

er

.

5.2

Name V

KBD

er

5.1

MAT 5.1

MS 5.1

PDEV 5.0

.

A

djustments

Introduction

This

chapter describes

specications

adjustments

optimum

proceed

operating condition.

to Chapter

Note

after it

should be

T

the adjustments

has been

performed along

4.

o

ensure

warm-up

Safety Consideration

This

chapter

operator

adjustments

aware

of

contains

safety

covered

the

and

hazards

NO

to

maintain

in

this

.

TE

repaired, or

If proper

proper

and

stabilization

s

,

CA

chapter

results

UTION

the

instrument

should

required to

when

with periodic

ensure

it

fails

maintenance

the

performance cannot

and

s

,

correct

is

required

and

be

W

instrument

before

ARNING

in

a

safe

performed

s

and

the

4263B

performance

be

achieved

operation,

performing

which must

serviceable

only

by

a

is

within

to

keep

after

the

be followed

condition.

qualied

its

tests

.

The

the

4263B

adjustments

a

30

minute

adjustments

person

published

in

.

to

ensure

The

who

is

2

,

Any

W

arning

interruption

the

instrument)

make

the

ground

instrument

system

Required Equipment

T

able 1-1

equipment

lists

when

the

equipment

adjusting

the

of

or

for

required

4263B

the

protective

disconnection

dangerous

any

reason

to

perform

is

.

ground

of

the

.

Intentional

prohibited.

the

adjustments

conductor (inside

protective ground

interruption of

.

Use

only

or

outside

terminal

can

the protective

calibrated test

Adjustments 2-1

Adjustment

No

hand

tools

A

djustable Components

Tools

are

required for

the adjustments

.

There

4263B

are

.

no

All

adjustable

adjustments

components

are

performed by

, such

EEPROM.

F

actory-Selected Components

No

factory-selected

EEPROM

There

are no

Related

There

performed

are

two

if

EEPROM

A

an

components

W

rite

Protect

write

protect

djustments

adjustments

assembly

for

has

are used

the

been

T

able

Switch

switches

4263B

replaced.

2-1.

as variable

updating the

in the

.

T

able

4263B

in

the

2-1

Related

capacitors or

adjustment data

4263B

.

lists

the

adjustments

A

djustments

variable resistors

stored in

that

the

must

,

in

internal

be

the

2-2 Adjustments

A1

Main Board

A2

CPU

A5

A

C

Assembly

Board

Inlet

Board

Replaced

Assy

Assy

Assy

without

ROM

Required

All

adjustments

1

None

None

A

djustment

LCD Assembly None

DC-DC Converter Unit None

Keyboard Assembly None

1

If the EEPROM, A2U1, is replaced, all adjustments are required.

Adjustment

The

adjustment

the

computer

data,

and

The

adjustment

installed

start

the

controls

stores

into

your

program

Program

program

the

the

data in

program

computer

after

it has

listed

in T

4263B and

the 4263B

runs

on

according to

been installed,

able 1-1

is required

the other

internal EEPROM,

the

computer

the procedure

pieces of

listed

refer to

for the

adjustments.

equipment to

A2U1.

in T

able 1-1

.The

described in

the \Program

Using the

obtain the

program

adjustment

should

\Program Installation

Execution

".

program,

be

".

T

o

Figure

each

data

disk.

2-1

menu

both

shows

item.

to

the

the

adjustment program

At

the end

of each

4263B internal

ow.

adjustment, the

EEPROM and

The following

program writes

to the

unit-serial-number dependent

lists the

brief

the

explanation

obtained

for

adjustment

le

on

the

INITIAL SETUP

Signal

Source Level

Adjustment

Impedance

Measurement 0m

Adjustment

Figure 2-1. A

denes the standards' calibration values

calibration values if necessary

obtains

set value

the data to adjust the actual signal source output voltage to the

. This adjustment should be performed if any performance test

djustment Program Flow

. Update the standard's

.

fails.

obtains the data to adjust the actual measurement impedance to the

standards' value, when no test leads are used. This adjustment should be

performed if the performance test, Impedance Measurement Accuracy

Test, fails.

Perform the Signal Source Level Adjustment prior to this

adjustment.

Adjustments 2-3

Impedance

Measurement 1m

Adjustment

obtains the

data to

standards' value

should be

Accuracy

Adjustment

performed if

Test,

prior to

adjust the

, when

the 1m

the performance

fails.

P

erform

this adjustment.

actual measurement

test

leads

are

used.

test,

Impedance

the

Impedance

Measurement

impedance to

This

adjustment

Measurement

0m

the

Impedance

Measurement

A

djustment

Impedance

Measurement

A

djustment

Rewrite

EEPROM

Note

Note

2m

4m

Make

\UUT:

the

adjustment

Because

data

performed

obtains the

standards'

should

A

A

obtains

be

ccuracy

djustment

the

performed

T

standards'

should

A

A

writes

be

ccuracy

djustment

the

performed

T

adjustment

dependent

adjusted

sure that

item(s)

the correct

4263B" window

data

the

Impedance

for

the

other

prior

to

data to

value

,

when

est,

fails

prior

to

data

to

value

,

when

est,

fails

prior

to

le

,

to

the

will

preceding the

accuracy

Measurement

Impedance

the

1m,

adjust the

the

2m

if

the

performance

.

P

erform

this

adjust

if

.

P

erform

this

data,

the

adjustment.

the

the

4m

the

performance

the

adjustment.

which

EEPROM.

be

written.

line frequency

.

Measurement

2m,

and

actual

measurement

test

leads

Impedance

actual

measurement

test

leads

Impedance

is

stored

Only

the

(50

Main Menu.

0m

Adjustment

A

4m

adjustments

are

used.

test,

Impedance

Measurement

are

used.

test,

Impedance

Measurement

in

the

adjustment

or

60Hz)

This

serves

djustments

.

impedance

This

to

adjustment

Measurement

0m

impedance

This

to

adjustment

Measurement

0m

unit-serial-number

data

of

previously

has

been

selected

selection

,

it

the

must

will

improve

reference

have

the

the

in

been

the

Note

Although

satisfy

the

performing

the

user's

application),

Measurement

is

performed

Measurement

is

performed after

and

2m may

some

requirement

it

is

strongly

A

djustments

after

the

Adjustments

the 0m

be out

of the

of

the

(e

.g.

recommended

.

If

only

0m

adjustment,

are invalid.

adjustment, the

specication.

Impedance

for

users

one

of the

the

data

For

measurement accuracy

Measurement

using

the 4m

to

perform

1m, 2m,

for

the remaining

example

,

A

test leads

all

the Impedance

and 4m

if

only

djustments

adjustments

Impedance

the

4m

adjustment

for

only

the

may

for

1m

2-4 Adjustments

Program

The

adjustment

The

installation

Installation

Conguration".

program

can

be

must

divided

be

installed

into

in

two stages

the

computer

, \Making

using

aW

orking Copy"

the following

and \Dening

procedures.

the

Making

Copy

prevent

harddisk

Dening

Dene

the

the

the

GPIB

a

W

contents

the

and

the

conguration

address

conguration,

Refer

to

the

1.

Turn

on

the

2.

Set

the

Mass

exists

using

3.

Load

the

LOAD

"TE_A4263B"

4.

Run

the

loaded

5.

As

the

program

address

.

Note

orking

program

store

of

the

Copy

the

les

original

Conguration

of

the multimeter

it

must

be

following

procedure

computer

Storage

the

MSI

command.

\

TE_A4263B

4

Return

program

instructs

Once

the

unless

the

adjustment

from

accidental

disk

of

the adjustment

redened if

to

and

bring

Unit

Specier

"

le

from

5

(or

4

Enter

by

pressing

,

select

multimeter

conguration

program disk

deletion or

in a

safe place

equipment. The

to be

used. Because

the equipment

dene the

up

the

B

ASIC

to

the

drive/directory

the

adjustment

5

).

RUN

.

the

type

of

type

and

is redened.

to a

working disk

destruction. Use

.

the

conguration has

conguration.

system.

program

the

multimeter

GPIB

addresses

or to

the

harddisk

the working

conguration includes

program

depends

on

changed.

where

disk

to

are

the

by

pressing

be

used and

set,

adjustment

enter

they

cannot

to

disk or

the

type

equipment

program

its

GPIB

be changed

the

and

Program

P

erform

Note

1.

Turn on the computer and bring up the B

required language

2. Set the

exists using the

3. Load the program, \

4. Execute the program by pressing

Execution

the

following steps

Install

the

to start

program

the adjustment

prior

extensions.

Mass Storage Unit Specier to the drive/directory where the adjustment program

MSI

command.

ADJ4263B

" by pressing

RUN

program.

to

execution.

Refer

to

ASIC system. Refer to the T

LOAD "ADJ4263B"

.

\Program

5

4

Return

Installation

".

able 1-2 for the

5

4

Enter

).

(or

Adjustments 2-5

Note

Note

In

the

If

the

change

errors

been

program,

adjustment

switch

at

A2SW1-1

power-on.

completed.)

the

being

Refer

4263B

performed

to

(Return

to

is

referred

\CLOSE",

the

switch

Figure

B-1

as \UUT".

follows

so

that

to

for

right

the

\OPEN"

the

switch

after

4263B

when

EEPROM

will

the

location.

replacement,

ignore

the

adjustment

self

test

has

2-6 Adjustments

Adjustments

This

section

the

program.

chapter

A

adjustment

as

a

provides

Connection

reference

of

the

Procedure References

supplemental

instructions

when performing

4263B

consists

information for

and some

additional explanations

the adjustments

of

the

following ve

the adjustments

.

adjustments.

which are

are provided.

performed by

Use this

Signal

Source

Impedance

Impedance

Impedance

Impedance

Signal

This

data

Source

adjustment

adjust

Equipment

Setup

This

setup

obtains

Level

Measurement

Measurement

Measurement

Measurement

Level

updates

the

actual

the

A

djustment

0m

1m

2m

4m

A

djustment

the

signal

signal

source

Multimeter

Dual

signal

source

A

djustment

A

djustment

A

djustment

A

djustment

source

level

level

to

the

Banana-BNC(m)

level

adjustment

adjustment

set

value

3458A

Cable

PN

data.

data

stored

.

11001-60001

in

the

EEPROM.

The

Figure 2-2. Signal Source Level Adjustment Setup

Perform the following steps as the program instructs.

1. Connect the Dual Banana-BNC(m) cable to the 3458A's INPUT binding posts.

2. Connect another end of the Dual Banana-BNC(m) cable to the 4263B 's H

CUR

Connector.

Adjustments 2-7

Impedance

This

adjustment

when

no

test

Note

Equipment

Measurement

updates

leads

P

erform the

are

the

used.

adjustment.

0m

A

djustment

data

to

adjust

Signal Source

the

measurement

Level

A

djustment

impedance

prior

to

performing

to the

standard values

this

,

Setup

This

setup

leads).

obtains

Standard

Open

Short

the impedance

Resistors

T

ermination

T

ermination

measurement

adjustment

42030A

42090A

42091A

data

for

0

m

test

leads

(no

test

Figure 2-3. Impedance Measurement 0m A

Perform the following

steps as the program instructs

.

djustment Setup

1. Connect the specied termination or standard resistor directly to the 4263B UNKNOWN

Connectors.

2. Repeat step 1 as instructed.

2-8 Adjustments

Impedance

This

adjustment

when

the

1m

Note

Equipment

Measurement

updates

test

leads

P

erform the

the

are

used.

adjustment.

1m

A

djustment

data

to

adjust

the

measurement

Impedance Measurement

0m

impedance

A

djustment

to the

prior

standard values

to

performing

,

this

Setup

This

setup

obtains

the

impedance

Standard

Open

T

ermination

Short

T

ermination

Test

Leads (

measurement

Resistors

1m

)

adjustment

42030A

42090A

42091A

16048A

data

for

1

m

test

leads

.

Figure 2-4. Impedance Measurement 1m Adjustment Setup

Perform the following steps as the program instructs.

1. Connect the 16048A directly to the 4263B UNKNOWN Connectors.

Adjustments 2-9

2. Connect

four BNC(f)-BNC(f)

Adapters

directly to

another end

of

the

16048A.

3. Connect

the specied

Connectors.

4. Repeat

step 3

Impedance

This

adjustment

when

the

2m

Note

P

erform

the

Impedance

This

adjustment

when

the

4m

Note

termination or

as instructed.

Measurement

updates

test

P

leads

erform

the

are

the

adjustment.

same

setup

procedures

Measurement

updates

test

P

leads

erform

the

are

the

adjustment.

2m

data

to

used.

Impedance

4m

data

to

used.

Impedance

standard resistor

A

djustment

adjust

the

measurement impedance

Measurement

for

the

16048D

A

djustment

adjust

the

measurement

Measurement

0m

as used

0m

directly to

A

djustment

for the

the

16048A.

impedance

A

djustment prior

4263B

to the

prior

to

to the

to performing

UNKNOWN

standard values

performing

this

standard values

this

,

,

P

erform

the

same

setup

procedures

for

the

16048E

as

used

for

the

16048A.

2-10 Adjustments

3

Assembly

Introduction

This

chapter provides

procedures

parts

. The

Ordering

T

o

order

indicate

T

o

order

number

quantity

Restored

Some

assembly

warranty

returned

numbers

for the

gure section

Information

a

part

listed

the

quantity

a

part

that

,

complete

of

parts

Exchange

replacement

is

more

applies

for

credit.

for

both

Replacement

the 4263B

major assemblies

of T

in

the

required,

is

not

listed

instrument

required.

replaceable parts

.T

able

3-7

also

replaceable

and

address

in

the

serial

number

A

ddress

the

Assemblies

assemblies

economical

through

F

or this

new

and

are

than

the

instrument's

reason, new

restored

available

a

new

assemblies are

able

3-1

to

T

shows

parts

the

lists

order

the

,

replaceable

,

the

description

order

to

the

as

either

assembly

support

assemblies must

lists

,

and

able

3-7

cable

quote

to

the

parts

nearest

new

and,

as

life

.

The

given in

the

step

describe

connections

the

Agilent T

nearest

list,

include the

and

function

Agilent

or

restored

with

new

defective

be ordered

the replaceable

by

step

disassembly

all

the

4263B

.

echnologies part

Agilent

T

echnologies

instrument model

of

the

part,

T

echnologies

assemblies

assemblies

assembly

for

spare

.

The

,

a 90-day

must

parts

parts

replaceable

number,

oce.

and

the

oce

.

restored

be

.

The

lists

.

part

Note

The

Exchange

Agilent

Program

T

echnologies

may

oce

not

for

apply

further

in

your country

details

.

. Contact

the nearest

Assembly Replacement 3-1

Replacing the

The

A2

CPU

Board

data

and

user

data.

the

A2

assembly

assembly

ROM

transfer

readjusting

to

the

reduces

the

is

new

4263B

ROM.

A2 CPU

Assembly has

Both ROM

replaced, the

assembly as

parts

cost for

.

For

this purpose

Board Assembly

a ROM

and EEPROM

ROM and

long as

for the

EEPROM may

the ROM

the repair

,the

rmware and

are mounted

and EEPROM

, and

A2 assembly

an EEPROM

in sockets

be transferred

the EEPROM

can

only

for easy

are not

transfer

be

for the

from the

defective.

saves

ordered

adjustment

replacement. If

defective

The

time

from

without

the

When

assembly

the

A2

are

assembly

in

Replaceable

The

replaceable

is replaced,

the

default position

Assembly

electrical

List

assemblies

make sure

as shown

are

listed in

that the

jumpers and

in Appendix

Table

3-1

B.

and

T

able

switches

3-3

.

on

the

A2

3-2 Assembly Replacement

T

able 3-1.

Replaceable Major

Assembly

List

Reference

Designation

1 04263-66505 1 A5

Agilent

Number

P

art

Qty

.

A

C

Inlet

2 04263-60004 1 Transformer

3 04263-80901 1 DC-DC Converter

4 04263-66532 1 A2

04263-00604 1 Case

0515-1550 4 Screw

CPU

Shield

Board

1

M3

5 04263-66504 1 A4 Keyboard

04263-25151 1 Rubber

Key

0515-1550 1 Screw M3

6 04263-61010 1 LCD Assembly

04263-25003 1 Filter Transparent

0515-1550 2 Screw M3

7 04263-66501 1 A1 Main Board Assembly

04263-69501 A1 Main Board Assembly (Exchange

Assembly)

Description

Board

Assembly

Assembly

Unit

Assembly

Assembly

w/o

ROM

1

Included in 04263-66532

Assembly Replacement 3-3

T

able 3-2.

A2 CPU

Board

Assembly

,

Replaceable

Assembly

List

Reference

Designation

1 2110-1123 1 A2F1,

2 1818-5146 1 A2U1,

Agilent

Number

P

art

Qty

.

Fuse

EEPROM

3 04263-85041 1 A2U11, ROM

T

able

3-3.

Reference

Designation

Agilent

Number

P

art

Replaceable

Qty

.

Assembly

List

A1C500 0180-4334 1 Capacitor,

A1C501 0180-4334 1 Capacitor, 22000

A5SW1 3101-3173 1 Line Switch

A5VR1 0837-0237 1 Varistor

A5VR2 0837-0237 1 Varistor

Description

SMT

2

Rev

.

Description

22000





A

1.01

F(for

power supply)

F (for power supply)

3-4 Assembly Replacement

Replaceable Mechanical

The

replaceable

mechanical

T

able

parts

3-4.

Parts

are listed

in T

Replaceable

List

able 3-4

Mechanical P

to T

able 3-7

arts List

.

1

Reference

Designation

Agilent

Number

P

art

Qty

.

1 04263-04004 1 Cover

2 5041-9167 4 F

oot

1460-1345 2 Tilt

3 04263-65020 1 Front P

4 5041-9170 2 Trim

0515-0914 4 Screw

5 04263-40001 1 Front

6 04263-00605 1 Sub

0515-0914 4 Screw

0515-1550 2 Screw M3 (Hidden)

0160-4808 4 Capacitor 470

1901-1250 8 Diode

7 1250-0252 4 BNC Connector

2950-0035 4 Nut

5040-3324 4 Insulator

5040-3325 4 Insulator (Hidden)

04263-01221 4 Lug Terminal (Hidden)

8 1510-0130 1 Binding Post

2190-0067 1 Washer (Hidden)

2950-0006 1 Nut (Hidden)

9 04263-87121 1 Panel Label

Stand

anel Assembly

Side

M3

(Hidden)

2

Bezel

P

anel

(Hidden)

M3

(Hidden)

(Hidden)

2

2

2

Description

2

2

2

pF (Hidden)

2

2

2

2

2

2

1

2

2

1

The assembly consists of the parts designated by 5 through 9.

2

This part is included in the Front Panel Assembly,3.

Assembly Replacement 3-5

T

able 3-5.

Replaceable Mechanical

P

arts

List

2

Reference

Designation

1 04263-61615 1 GPIB

2 1250-0083 1 BNC

3 2110-0565 1 Fuse

4 0515-1551 2 Screw M3

5 04263-00102 1 Chassis

6 2190-0054 1 Washer

1

Includes two sets of screw

Agilent

P

art

Qty

.

Number

Connector

Connector

0360-1190 1 Lug T

2190-0016 1 W

asher

erminal

(Hidden)

2950-0001 1 Nut

Holder

2110-0202 1 Fuse 0.25

2110-0201 Fuse

0.5

2950-0054 1 Nut

,washer

, and nut.

Description

(Hidden)

A, Slow

A, Slow

with

atcable

,

Ext

DC

Blow

Blow (115V)

1

Bias

(230V)

3-6 Assembly Replacement

T

able 3-6.

Replaceable Mechanical

P

arts

List

3

Reference

Designation

1 0515-2079 1 Screw

2 04263-24001 2 Nut

3 04263-00607 1 Plate

4 04263-24002 2 Nut Rod

5 0515-1550 7 Screw

Agilent

P

art

Qty

.

Number

2190-0586 2 W

2190-0584 2 W

M4 (on

Rod

(for

asher

Spring M4

Shield

(for DC-DC

asher Spring

M3 (for

Description

the

Transformer)

M3

A1 and

04339-24006 4 Stando (Hidden,

6 5040-3347 2 Plate

0460-0616 150 mm

2

2

(Hidden, Chassis

Adhesive T

ape (for Plate)

7 04263-07001 2 Gasket

0515-1550 4 Screw M3

8 0370-2862 1 Button, Line Switch

04339-23001 1 Shaft, Line Switch

0535-0031 1 Nut (for Shaft)

9 04339-25002 2 Support, Line Switch Plate

0515-0914 2 Screw M3 Flat Head

10 04263-01201 1 Plate, Line Switch

11 0515-0914 5 Screw M3 Flat Head (for A5)

Chassis)

Conv

A2)

for

A1)

Reverse

.)

side)

Assembly Replacement 3-7

T

able 3-7.

Replaceable Mechanical

P

arts

List

4

Reference

Designation

1 04263-61608 1 Wire

2 04263-61607 1 Wire

Agilent

Number

P

art

Qty

.

Assy

(V

Assy

(Ext

3 04263-61602 1 Cable Assembly

04339-25004 1 Core

0515-1551 1 Screw

4 04263-61604 1 Cable

Holder

M3

Assembly

04339-25004 1 Core Holder

0515-1551 1 Screw

M3

5 04263-61605 1 Cable Assembly

04339-25004 1 Core Holder

0515-1551 1 Screw M3

6 04263-61606 1 Cable Assembly

04339-25004 1 Core Holder

0515-1551 1 Screw M3

7 04339-61614 1 Wire Assy (Binding Post)

Description

Selector)

DC

Bias)

,

\A"-\A"

,

\B"-\B"

, \C"-\C"

, \D"-\D"

3-8 Assembly Replacement

Disassembly Procedures

This

section

fasteners

provides

required

for

the

procedures to

the

replacement are

disassemble the

described.

4263B's

major assemblies

.T

ools and

Caution

T

ools

and

The

4263B

fasteners

avoid

damaging

fasteners

Cover

The

following

SUSCEPTIBLE TO

P

erform

a

F

asteners

mechanical

in

the

4263B

them,

.

Removal

procedure

the

grounding

components

may

use

is

following

strap

appear

only

pozidrive

common

DAMA

.

are

to

for

GE FROM

procedures

secured

be

Phillips

using

screwdrivers

gaining access

ESD

only

type

.

at

metric

,but

to

to any

a

static-safety

threaded fasteners

they are

remove

or

of the

in fact,

tighten pozidrive

assemblies

workstation

. Many

P

ozidrive

.

and

type

type

wear

.

T

o

Figure 3-1. Cover Removal

1. Remove the two screws which fasten the cover to the chassis rear panel.

2. Slide the cover toward the rear while holding the front panel bezel.

Assembly Replacement 3-9

A1

Main

Board

Removal

Removal

1.

Remove the

2.

Disconnect the

a.

The

UNKNOWN

b.

The

c.

The

d.

The

3.

Remove

4.

Remove

at

bladed

5.

Remove

6.

Remove

lifting.

A2

CPU

Removal

1.

Remove

2.

Disconnect

assembly

Procedure

A2

CPU

following

four

cable

connectors

wire

assembly

two

wire

assemblies

wire

assembly

the

nut

which

the

four

studs

screwdriver

the

three

the

A1

assembly

Board

Assembly

Procedure

the

cover referring

the

two

.

Board

assemblies

cable

which

Assembly

assemblies

marked

on

the

is

connected

Front

which

which

fasten

,

that

is

connected

the

Ext

secure

.

screws

that

from

secure

the

Removal

to

\Cover

atcable assemblies

referring

\A",

are

connected

Trigger

the

A1

the

chassis

Removal".

and

\B",

P

anel

to

to

assembly

A1

by

and

to

\A2

wire

\C",

the

transformer

to

the

Ext

connector

assembly

sliding

the

wire

CPU

Board

assemblies

and

\D"

the

DC-DC

DC

Bias

to

the

to

the chassis

to

the

the

assembly

assembly

Assembly

from

the

which

are

Converter

Connector

rear

panel.

,by

chassis

.

toward

from

the

Removal".

A1

assembly

connected

rotating them

forward

front

side

.

to

the

with

before

of

the

a

A2

3.

Disconnect

panel,

4.

Remove

5.

Remove the

bottom,

6.

Remove

Note

A5 A

C Inlet Board Assembly Removal

from

the

while

the

the

atcable

the

rear

four

at

cable

sliding

A2

assembly

The

assembly

A2

CPU

right

screws

assembly

the

ROM

Board

assembly

side

that

A2

from

and

EEPROM

to

minimize

Assembly"

,

which

of

the

secure

which

assembly

the

chassis

the

A2

assembly

the

A2

is

connected

toward

on

the

repair

for

is

connected

to

.

assembly

to

to

the

front.

.

A2

assembly

time and

parts cost.

more information.

the

the

may

A1

GPIB

stud.

main

be

transferred

connector

board

assembly

Refer to

on

the

rear

on

the

to

the

new

\Replacing the

Removal Procedure

1. Disconnect the cable assembly with the 4 pin connector from

the A5 assembly

.

2. Disconnect the cable assembly with the 3 pin connector from the A5 assembly.

3. Remove the screw which xes the green and yellow wire connected to the neutral terminal

of the power cable connector to the chassis bottom.

4. Remove the ve screws which secure the A5 assembly to the chassis, from the side.

3-10 Assembly Replacement

5. Slide

line switch

the A5

assembly toward

plate slot.

the

right

to

remove

the

switch

on

the

A5

assembly

from

the

6. Remove

Keyboard

Removal

1.

Remove

2.

Disconnect

assembly

3.

Remove

4.

Remove

5.

Remove

6.

Place

the

7.

Remove

8.

Remove

LCD

Assembly

Removal

1.

Remove

the

A5

assembly

from

Assembly Removal

Procedure

the

cover

referring

the

two

atcable

.

the

two

at

head

screws

the

side

trim

label

from

four

front

the

the

screws

screw

keyboard

panel

that

that

secure

assembly

secures

assembly

Removal

Procedure

the

cover

referring

the

chassis

to

\Cover

assemblies

that

both

the

,

so

that the

the

keyboard

from the

to

\Cover

.

Removal".

and

secure

sides

front

panel

front panel

front panel

Removal".

the

the

of

the front

to

wire

assembly

front panel

bezel.

bezel

to the

faces

the

front

bezel.

from

from the

chassis from

down.

panel

bezel.

the

front side

bottom.

both sides

of the

.

A2

2.

Disconnect

assembly

3.

Remove

4.

Remove

5.

Remove

6.

Place

7.

Remove

8. Remove

.

the

the

the

the

front

the two

the LCD

the

two

two

at

side

trim

four

screws

panel

screws that

assembly from

atcable

head

screws

label

that

assembly

assemblies

that

from

both

secure

,

so

that

secure the

the front

and

secure

sides

the

front panel

the

LCD to

panel bezel.

the

wire

the

front

of

the front

bezel to

front panel

the

front

assembly

panel

from

bezel.

the chassis

faces down.

panel

from

bezel.

the

the

front

bottom.

from both

side

of

the

sides

BNC Connector Removal

Removal Procedure

1. Remove the cover referring to

\Cover Removal".

2. Disconnect the two atcable assemblies and the wire assembly from the front side of the

A2 assembly

.

3. Remove the two at head screws that secure the front panel from the bottom.

4. Remove the side trim label from both sides of the front bezel.

5. Remove four screws that secure the front panel bezel to the chassis from both sides.

A2

.

6. Place the front panel assembly, so that the panel faces down.

Assembly Replacement 3-11

7. Disconnect

from the

the cable

A1 main

assembly which

board assembly

is

connected

to

the

BNC

connector

being

replaced

.

8. Remove

connector being

9. Disconnect

nut

which

10.

Unscrew

11.

Remove

the

the

fastens

the

the

core

cable

nut

BNC

holder

replaced,

from

,

from

which

connects

connector

which

by

the

the

back

.

holds

the

unscrewing

BNC

connector

of

the

the

BNC

cable

the

screw

housing

front

panel,

connector

assembly

secures

the

housing

which

being

cable

is

connected

the

holder

replaced,

to

the

to

the

from

by

BNC

sub

to the

the

unscrewing

connector

panel.

BNC

front

side.

the

.

3-12 Assembly Replacement

Troubleshooting

Introduction

This

chapter provides

information

includes theory

assembly level

of operation,

troubleshooting information

and troubleshooting.

for

the

4263B

.

4

The

Safety

This

to

avoid

Considerations

chapter

damaging

Warning

Required

T

able 1-1

lists the

contains

W

the

equipment.

The

servicing

supplied

type

of servicing

who

are

shock).

ARNINGs

to

aware

When

instrument,

completed,

and

that

all

grounding

Equipment

equipment required

and

procedures

the

instrument

of

serving

remove

ensure

necessary

system.

CA

UTIONs

described

and

must

be

performed

the

power

that

hazards

can

all

parts

involved

be

performed

from

safety

are

for troubleshooting.

that

must

herein

its

protective

only

the

instrument.

features

properly

be

followed

are

covers

by

service

(for

example

without

are

connected

for

performed

are

trained

,

re

power

Before

intact

and

to

your

protection

when

removed.

personnel

,

and

electrical

applied

any

repair

functioning,

the

protective

power

This

to

the

is

and

is

Troubleshooting 4-1

After Service

Product Safety

Checks

Warning

P

erform

checks

1.

the

may

Visually

heat,

such

evidence

2.

Use

an

instrument

0.1



.

Flex

discontinuities

3.

Unplug

line

and neutral

them

and

component

Whenever

impaired,

secured

have

The

The

The

The

following

also

be

inspect

as

discolored

of

arcing.

ohmmeter

enclosure

the

power

exist.

the

4263B

enclosure.

which

it appears

the

against

likely

been

instrument

instrument

unit

has

instrument was

ve

safety

used

for

safety

the

interior

printed

Determine

which

can accurately

to

the

cord

's

power

pins

causes

plug

of

the

The

minimum

the instrument

likely that

apparatus

any

shall be

unintended operation.

compromised if,

shows

fails

visible signs

to perform

undergone prolonged

severely stressed

checks

of

the

the

to

checks

instrument

circuit

cause

verify

after

troubleshooting

for

boards

,

and

and

repair

measure 0.1

power

while making

power

cord's

from

connector

acceptable

ground

this measurement

the

power source

together

resistance

to

fail

protective safety

marked as

inoperative and

The protection

for example:

of damage

the intended

storage under

in transport.

the

safety

condition

and repair).

any

signs

of

abnormal internally

components

,

.

to

check the

pin. The

this

test.

resistance must

to

determine

.

Set

the

and

check

is

5

M.

provisions have

should be

provisions will

.

measurement.

unfavorable conditions

of

the

4263B (these

generated

damaged

line

the

Find

insulation,

resistance

be

if

any

switch

to

resistance

and

replace

from

less

than

intermittent

ON.

Tie

between

been

.

or

the

the

any

4.

5.

V

erify

V

erify

washer

that the

that

the

.

correct

fuse

grounding

is

wire

installed.

(green

and

yellow)

is

secured

to

the

chassis

by

a

screw

and

4-2 Troubleshooting

Theory of

This

section

assembly

describes

.

Operation

the

general overall

operation of

the 4263B

and the

operation of

each

Overall

The

4263B measures

voltage

to current

impedance

voltage

signal

across

source

Measurement

the

impedance

ratio

.

A

of

the

,

a

Device

the

vector

DUT

Under

and

voltmeter

Theory

vector

T

est

the

current

,

is

and

of

the

a

value

(DUT)

a

Device

which

is

owing

vector

Under

consists

determined

thorough

current

meter

T

est

of

by

it.

(DUT)

a

magnitude

the

vector

The

4263B

.

by

measuring

ratio

essentially

and

a

between

vector

phase

consists

.

the

The

of

a

In

Figure 4-1

resistance),

voltage

is

Note

Figure

,a

DUT connected

voltmeter

,

e

the DUT's

x

In this chapter

4-1. V

V

,

and

impedance

oltage Current

in

series

ammeter

, we will

with

,

A.

Zx

is

focus only on

Ratio Measurement

a

test

voltage

If

the

ammeter

expressed

Zx

=

by:

e

x

i

x

impedance

source

measures

Principle

(including

ampere

i

x

an

output

when

measurement. The other

parameters, such as L, C, and R, are derived mathematically from the measured

impedance value

.

Troubleshooting 4-3

the

source

Overall

Block

Diagram

Figure

4-2

shows

the

overall

Figure

block

diagram

4-2.

4263B

of

the

Overall

4263B

Block

.

Diagram

The

signal

converts

to

the

v

.

amplier

data.

The

the

vector

current

,

i

The

displays the

source

voltage

ratio

through the

.

The vector

CPU

calculates

result

section applies

across and

detector.

The

DUT

ratio detector

DUT

on

the

LCD

.

a

measurement

the

current

voltage

is

converted

switches

impedance

through

across

from

the

to

these

the

signal

DUT

a

voltage

vector

the

two

to

the

DUT

is

before

voltages

ratio

DUT

to

input

.

The

two

voltages

to

dierential

being

to

be

of

these

transducer

which

amplier

input

to

dierential

converted

two

voltages

block

are

to

digital

output

,

and

4-4 Troubleshooting

Analog

Section

Figure

into

The

is

High-Current

Low-Current

The

and

by

converter

One

switch

as

4-3

shows

three

sections

signal

set

vector

Low-P

from

source

the

voltage

otential

converting

.

of

the

two

SW2.

The

measurement

(H

(L

the

Analog-to-Digital

the

analog

,

the

signal

generates

keyboard

CUR

CUR

or

)

connector

)

connector

across

)

POT

connectors

(L

current

outputs from

selected

time

and

Converter

section

source,

an

by GPIB

the

owing

ac

.

The

,

which

DUT

,dc

block

diagram.

transducer and

,or

dc biased

commands.

current

serves

is detected

.

The

vector

into

L

CUR

the transducer

signal is

processed according

measurement range

(ADC).

The

vector ratio

ac signal

The signal

owing

as

through

virtual ground.

by the

voltage between

current

connector

is selected

,and

is converted

4263B

analog section

detector.

of which

is applied

the

DUT

owing through

to

a

corresponding

in

the

vector

to measurement

into

can be

frequency and

to the

DUT via

is

current sunk

High-Potential

the DUT

voltage

ratio

detector

conditions

digital

data

by

divided

level

the

into the

(H

POT

is detected

,

using an

by

,

such

the

)

I-V

Figure 4-3. Analog Section Block Diagram

Troubleshooting 4-5

Signal

The

signal source

signals

and

The

. The

100 kHz

dc bias

allows

the

4263B

Source Section

section

ac

signal

.

The

ac

has

three

to apply

rear

a

dc

panel.

voltage

generates

frequency

or

dc

signal

choices

,

from

0,

can

level

1.5,

an

three

be

selected

has

and

external

kinds

ve

2

V

of

from

choices

,

and

voltage

signals

among

,

has an

source

,

dc

,

ac

,

ve

50 m

,100

external bias

via

the

and dc

choices

m,

250 m

Ext

biased ac

,

100,

, 500

voltage

120,

m,

function with

DC Bias

connector on

1k

and 1

which

,10

k

V

.

Figure

4-4.

Signal

Source

Section

Block

Diagram

4-6 Troubleshooting

Transducer

The

transducer section

through

used

source

the DUT

by the

.

Option

Section

by

converting

001

measures

the

the

(Transformer

vector

current

P

arameter

voltage

to

across

voltage

Measurement),

.

The

the

DUT

transducer

and

,

and

the

the

also

includes

contact

current

check

owing

a switch

voltage

Figure

4-5

shows

the

transducer

block

Figure

diagram.

4-5.

Transducer

Block

Diagram

The

voltage

amplier

The

current

voltage

I-V

by

converter

converter

high

open

.

,

across

owing

an

thus

loop

I-V

converter

output

L

CUR

gain

the

DUT

through

and

,

is

of the

is

measured

the

DUT

.

The

dierential

the inverting

at

virtual

ground, because

at

and

input of

operational amplier

the

H

owing

amplier

the converter

used in

POT

into

and

the

measures

of the

L

POT

L

CUR

.

very high

the I-V

connectors

connector

the

voltage

The

inverting

input impedance

converter

.

using

a

dierential

is

converted

between an

input

of

the

and

to

very

Troubleshooting 4-7

V

ector Ratio

The

vector ratio

and

converts these

diagram.

In the

Detector Section

detector

gure

section

voltages

,

i

OUT

into

and

digital

v

processes

data.

are

OUT

the

two

Figure

the outputs

output

4-6

shows

of

the

voltages

the

transducer

from

vector

section.

the

transducer

ratio

detector

section

block

Transformer

Note

This

function

basic

transformer

Figure

P

arameter Measurement

This

function

measures

measurement

4-6.

only

the

transformer

V

applies

setup

ector

Ratio

(Option 001

only

parameters

using

a

Detector

to

an

4263B

using

simplied

Block

only)

with

SW1.

4263B

Diagram

Option

Refer

block

001.

to

Figure

diagram.

4-7

for

the

4-8 Troubleshooting

Figure 4-7. Basic Transformer Measurement Setup

In

the gure

secondary

,the

transformer

is connected

common.

When

measuring the

secondary

ratio

H

CUR

obtained

voltage while

from the

,

and

for

in

a

ratio

secondary

similar

Digital Section

to

turns

applying

of

these

manner

primary

the

H

ratio

two

voltage

.

is

connected

and

POT

,

for

an

voltages

L

example

ac

voltage

.

measurement,

connectors

POT

,

the

F

or

to

4263B

to

the

primary

SW1

H

CUR

.L

measures

primary

voltage

switches

and

L

CUR

and

CUR

L

the

.

The

4263B

measurement,

to

H

POT

connectors

are

POT

connected as

primary

calculates

SW1 switches

.

Other

parameters

,and

the

voltage and

the turns

a

to

are

Figure 4-8

shows the

Digital Section

block

diagram.

Figure 4-8. Digital Section Block Diagram

The digital section

such as the keyboard and LCD

order to control the latches

consists of the A2 CPU Board Assembly and other peripheral assemblies

. The section communicates with the A1

, switches

, and other components on the

Main Board Assembly in

A1 assembly and receive

the measurement data. The GPIB interface on the A2 Assembly allows the 4263B communicate

with a controller

. A handler interface on the A1 Assembly allows the 4263B communicate

with

an external handler.

The A2 CPU Board Assembly includes a processor, ROM, EEPROM, jumpers, switches, and

LEDs.

ROM (A2U11) stores the rmware which controls all the 4263B's operation and functions. The

ROM is mounted in a socket for easy replacement.

Troubleshooting 4-9

The

EEPROM (A2U1)

unique

not

data, such

lose its

replacement.

data

as

when

stores the

the

operator

power

is

turned

unit

saved

unique

data,

measurement

o.

The

such

as

setup

EEPROM

the

adjustment

condition.

is

mounted

data

The

in

asocket

and

the

EEPROM

for easy

operator

will

Jumpers

P

ower

Figure

and switches

Supply

4-9 shows

set

Section

the power

the

4263B

's

supply section

conditions

block diagram.

.

Refer

to

Appendix

B

for

more information.

The

ac

line

power

line

switch,

voltage

and

from

corresponding

voltage

voltage

on

the

setting selection,

is

connected

varistors

230V

or

primary

line power

Figure

115V

tap

4-9.

P

to

the

.

The

voltage

.

A

ccording

of

the

transformer

.VR2

blows fuse

for example

ower

A5

selection

to

, 115V

Supply

AC

Section

Inlet Board

switch

the

selection,

.

V

aristor

F1 if

the

selection when

on

the ac

,

4263B

The transformer secondary voltage is approximately 14 V

ltered

dc voltage

The dc voltages are supplied to all assemblies

by circuitry on the A1 Main Board Assembly

, and produces approximately 14 Vdc

is applied to the DC-DC Converter to produce regulated +12V

, either directly

Block

Assembly,

VR1

Diagram

the

rear panel

line power

protects the

is

turned

using a

which consists

selects the

is connected

circuit from

on

with

the

230V line

.

of

ac line

wrong

. The ac voltage is rectied and

,+5V

, and

0

or indirectly via the A1 assembly

the

fuse

to

the

surge

line

. The

12 Vdc

,

.

.

4-10 Troubleshooting

Troubleshooting

Figure

4-10

owchart

procedure

Refer

to

Note

shows

when

to

check

Chapter

the

overall troubleshooting

troubleshooting.

each

item.

3

for

assembly

Because

should

therefore

be

of

done

,

each

only

Refer

to the

replacement.

assembly's

by

assembly

isolates

the

owchart to

\Check Procedure

high

SMD

(surface

replacement.

defective

assembly

nd the

defect assembly

References" for

mount

The

troubleshooting

.

device)

.F

the detailed

ratio

,

the

procedure

ollow the

repair

,

Troubleshooting 4-11

4-12 Troubleshooting

Figure 4-10. Troubleshooting Flow Chart

Check

Refer

Figure

Procedure

to

the

corresponding

4-10

for

quick

References

check

reference

.

procedure

.

Each

check

procedure

is numbered

the same

as in

Check

1.

Remove

2.

Turn

3.

Using

(TP500)

T

able

4.

If

passed,

Fuse

1,

DC-DC

the

on

the

a

multimeter

on

4-1

.

proceed

and

Line

Converter

cover

4263B

A1

Main

Switch

referring

.

,

check

Board

to \Check

".

Output

to

\Cover

to see

if the

Assembly

2, LCD

V

oltage

Removal"

in

Chapter

voltages between

shown in

Figure 4-11

Displays Anything?",

3.

the test

are in

otherwise

pads

and

the ranges

proceed

the

shown

to

ground

in

\Check

9,

Figure 4-11. DC-DC Converter Output V

Table 4-1. DC-DC Converter Output V

Test Pad (+) T

est Pin (

0

) Range

\+5 V" 500 5.160.2 V

\+12 V" 500 1260.6 V

\012 V" 500

0126

oltage Check

oltage (Connected)

0.6 V

Troubleshooting 4-13

Check

1.

Turn o

2.

Turn on

3.

Check for

4.

If

beep

otherwise

2, LCD

the

the

a

sounds

proceed

Displays Anything?

4263B

.

4263B

beep

and

while

sound

LCD

to

\Check

watching

for

a

moment

displays

6,

CPU

the

LCD

and

something,

P

ower

.

if

you

proceed

LED

see

anything

to

\Check

Lights?".

is displayed

3,

LCD

Operates

on the

LCD.

Correctly?",

Check

1.

Turn

2.

Reset

3.

Check

4.

Press

displayed

5.

If

the

replace

Check

1.

Turn

2.

Turn

3.

Check

4.

If

an

\Check

Check

1.

If the

replace

3,

LCD

on

the

the

if

the

some

LCD

the

4,

Any

o

the 4263B

on

the 4263B

if

the

error

5,

5,

CPU

error

the A1

Operates

4263B

4263B

LCD's

front

in

the

operates

LCD

Error

LCD

has

NOT

CPU

Related

message

Correctly?

.

.

back

light

panel

keys

whole

area

correctly

Assembly

.

Message

.

while watching

displays any

occurred, replace

Related

Error

Error

is

one

Main

Board

is

lit.

such

as

of

the

,

proceed

on

LCD?

error

Message?".

Message?

of

the

following,

Assembly

4

Meas

LCD

.

to

the

LCD

message

the

.

5

Prmtr

\Check

.

.

A1

Main

replace

and

check

4,

Any

Board

the

if

the

Error

Assembly

A2

CPU

characters

Message

,

otherwise

Board

are

correctly

on

LCD?", otherwise

proceed

Assembly

,

otherwise

to

a.

ROM

TEST

F

AILED

b.

RAM

TEST

F

AILED

c.

EEPROM

Note

Check 6, CPU P

R/W

F

AILED

When

Board

Assembly

replacing

the

Assembly" in

.

ower LED Lights?

A2

CPU

Chapter 3

Board

Assembly

for handling

,

refer

the ROM

to

\Replacing

and EEPROM

the A2

on the

CPU

1. Turn on the 4263B.

2. Check if the LED \+5V" of DS1 on the A2 CPU Board Assembly lights

.Referto

Figure 4-12

for DS1 location.

3. If the LED lights, proceed to \Check 7, Any Error Code on LED?", otherwise proceed to

\Check 8, CPU Fuse High Lead Voltage".

4-14 Troubleshooting

A2

Check

1.

Turn o

2.

Turn on

3.

Check if

4.

If

LEDs

doesn't

7, Any

the

the

the

light

turn

Error Code

4263B

.

4263B

LEDs

o

as

light

the

or

\BERR"

while

sequence

on

watching

in

the

,

lights)

LED?

LEDs

sequence

replace

replace

shown

the

A2DS1

LCD

the

on

the

in

Figure

Assembly

A2

CPU

A2

CPU

4-12

,

otherwise

Board

Board

.

(possibly,

Assembly

Assembly.

\HALT"

.

Note

When

Board

replacing

Assembly"

Assembly

the

A2

CPU

in

Chapter

Board

3

for

handling the

Assembly,

refer to

ROM and

\Replacing the

EEPROM on

A2 CPU

the A2

.

Figure

4-12. CPU

Board Assembly

LED Light

Sequence

Troubleshooting 4-15

Check

1.

Turn on

2.

Using a

shown

3.

If the

Main

Note

8, CPU

the

multimeter

in Figure

voltage

Board

Fuse High

4263B

.

,

check

4-13

is

in

the

Assembly

If

the

multimeter reading

most

suspicious

is

range

.

Lead

if

the

+5

6

0.2

,

. Replacing

V

oltage

dc

V

.

replace

voltage

the

is correct,

only the

A2

at

CPU

the

high

Board

fuse F1

fuse may

lead

of the

Assembly,

on the

x the

fuse F1

on the

otherwise replace

A2

CPU

Board

problem.

CPU Board

the A1

Assembly

is

Note

When

Board

replacing

Assembly"

Assembly

the

A2

CPU

in

Chapter

Board Assembly

3

for handling

, refer

the ROM

to \Replacing

and EEPROM

the

on

A2

the

CPU

A2

.

Figure

4-13. Location

of High

Lead of

Check 9, Fuse and Line Switch

1. Check that the fuse on the 4263B rear

2. Check that the line switch on the A5 A

panel is not blown.

C Inlet Board Assembly is not defective

3. If passed, proceed to \Check 10, DC-DC Converter Input V

defective line switch or blown fuse

.

4-16 Troubleshooting

A2F1

Fuse

.

oltage", otherwise replace the

Check

1.

Turn on

2.

Using a

Converter

pin

3.

If

the

V

oltages",

10, DC-DC

the

4263B

multimeter

input voltage)

locations.

voltage

otherwise

Converter Input

.

,

check

is

in

range

if

is

between

,

proceed

proceed

the

to

V

voltage

12

to

the

the

\Check

oltage

between

V

and

\Check

the

15

Vdc

11,

12,

Transformer

\DC

.

Refer

DC-DC

OUT"

test

pad and

to

Figure

4-14 for

Converter Open

Secondary

TP500 (DC-DC

Output

V

oltage

".

test pad

and

Figure

4-14. DC-DC

Converter Input

V

oltage

Check

Troubleshooting 4-17

Check

1.

2.

3.

4.

11, DC-DC

Turn o

Disconnect the

on

the A1

Turn the

Using

the

connector

5.

If

passed,

Assembly

the

4263B

DC-DC

Main

Board

4263B

on.

multimeter

pins

shown

replace

.

Converter Open

.

,

the

Converter

Assembly

check

in

Figure

A1

Main

if

Output

.

the

4-15

Board

Output

DC-DC

are

Assembly

V

oltages

Cable

shown

Converter

in

the

ranges

,

in

open

shown

otherwise

Figure

output

in

replace

4-15

voltages

T

able

the

from

4-2.

DC-DC

connector

on

the output

Converter

\J504"

4-18 Troubleshooting

Figure

T

able

4-15.

4-2.

DC-DC

DC-DC

Pin

(+)

1

Converter

Converter Open

Pin

(

0

)

V

oltage Range

2

5.1

4 3 1260.6 V

5 3

0126

Output

Output V

6

0.2

0.6 V

Connector

oltages

V

Check

1.

2.

3.

4.

5.

12, Transformer

Turn o

Disconnect the

Board

Assembly.

Turn the

Using

a

+17

V

ac

If

passed,

the

4263B

transformer

4263B

on.

multimeter

.

replace

.

Refer

,

check

the

Secondary V

secondary

to

Figure

if

the

transformer

A1

Main

Board,

4-16

oltage

connector

for

the

connector

secondary

otherwise

from

replace

connector

location.

voltage

the

transformer

\J501"

is

between

on

the

A1

Main

+13

V and

.

Figure

4-16.

Transformer

Secondary

V

oltage

Check

Troubleshooting 4-19

A

Manual

Changes

Introduction

This

appendix contains

congurations

this

manual applies

title

page of

Manual

T

o

adapt

listed

opposite

Instruments

documented

changes

instrument

documented

F

or

additional

of the

this manual.

Changes

this

manual

your

manufactured

in

this

supplement

serial

in

a

information

the information

4263B than

directly to

to

your

instrument's

manual.

that

number

yellow

MANU

T

4263B

after

Later

will

accompany

is

not

on

able

required to

the current

4263B LCR

,

refer

serial

number

the

printing

instrument

listed

on

AL

CHANGES

serial

number

A

-1.

Manual Changes

printing

Meter

to

T

able

of

versions

the

manual

the

title

supplement.

coverage

whose

.

this

adapt

date

A

-1,

manual

shipped

page

,

by Serial

this

of

serial

and make

may

will

be

of this

refer

to

manual

this

number

to

manual.

prex

all of

be

dierent

documented

with

that

manual

4263B

or

Operation manual.

Number

earlier

the

versions

The

information

is

listed

manual

from

in

a

manual

changes

those

instrument. If

in

T

able

A

-1

on

,

the

your

it

may

or

in

be

Serial

or

Number

Prex

There

date

of

are

this

no

earlier

manual.

Make

Manual

congurations

Changes

than

the

printing

Manual Changes A-1

B

Default

Jumper and

Introduction

This

appendix describes

Assembly

Jumper

Figure

replaced,

B-1

. Use

this information

and

shows

set

the

the setting

Switch

the

default

jumpers

when the

Settings

Jumper

and

switches

Switch Settings

of the

and

to

jumpers

A2

Assembly

Switch

the

default

and

switches

settings

sides

is

replaced.

. When

as

on

the

shown

the

A2

in

A2

CPU

the

CPU

Board

gure.

Board

Assembly

is

Figure B-1. Jumper and Switch Settings

Default Jumper and Switch Settings B-1

Index

A

A1

Main Board

A2

CPU Board

A5

AC

Inlet

A

djustable Components,

A

djustment Program,

A

djustments, 2-1

A

djustments Procedure

Adjustment

After

Service Product

Analog

Section,

Assembly

Removal, 3-10

Assembly Removal,

Board

T

ools,

Assembly

2-2

4-5

Replacement,

B

BNC Connector

Removal,

C

Check

Cover

Procedure References,

Removal,

3-9

D

Digital

Disassembly

Documentation

Section,

Procedures,

4-9

Map,

E

EEPROM

Write

Protect

F

F

actory-Selected

Components,

G

General Information,

2-2

2-3

References,

Safety

3-1

3-11

3-9

viii

Switch,

1-1

3-10

Removal,

2-7

Checks,

4-13

2-2

2-2

3-10

4-2

Impedance

Measurement 4m

2-10

Instruments

Covered by

K

Keyboard

Assembly Removal,

L

LCD

Assembly

Removal, 3-11

M

Manual Changes,

A-1

O

Ordering

Overall

Overall

Information,

Block

Diagram,

Measurement

3-1

4-4

Theory,

P

P

ower

Supply

Program

Section,

Installation,

4-10

2-5

R

Related

Replaceable

Replaceable

Replacing

Required

Restored

A

djustments,

Assembly

Mechanical

A2

CPU

Equipment,

Exchange

2-2

List,

Board

1-2

Assemblies,

S

Signal Source Level A

djustment, 2-7

Signal Source Section, 4-6

Adjustment,

This Manual,

3-11

4-3

3-2

P

arts

List,

Assembly,

3-1

1-1

3-5

3-2

H

How T

o Use This Manual, viii

I

Impedance Measurement 0m Adjustment,

2-8

Impedance Measurement 1m Adjustment,

2-9

Impedance Measurement 2m Adjustment,

2-10

T

Theory of Operation, 4-3

Tools and F

asteners, 3-9

Transducer Section, 4-7

Transformer P

arameter Measurement, 4-8

Troubleshooting, 4-11

V

Vector Ratio Detector Section, 4-8

Index-1