Anritsu MT9812B Manuale utente

Third Edition

Read this manual before using the equipment.

Keep this manual with the equipment.

This manual explains important service items

related to service. Read both the operation

manual and this manual, and keep both with

the equipment.

MT9812B

Multi Channel Box

Service Manual

Measurement Solutions

ANRITSU CORPORATION

Document No.: M-W1555BE-3.0

To prevent the risk of personal injury or loss related to equipment malfunction, Anritsu Corporation uses the following

safety symbols to indicate safety-related information. Insure that you clearly understand the meanings of the

symbols BEFORE using the equipment.

Some or all of the symbols may not be used on this equipment. In addition, when drawings are included in this

manual, labels on the equipment may not be shown on them.

Safety Symbols Used in Manual

DANGER

WARNING

CAUTION

Safety Symbols Used on Equipment and/or in Manual

The following safety symbols are used inside or on the equipment near operation locations, and/or in manual to

provide information about safety items and operation precautions. Insure that you clearly understand the

meanings of the symbols and take the necessary precautions BEFORE using the equipment.

This indicates a prohibited operation. The prohibited operation is indicated

symbolically in or near the barred circle.

This indicates an obligatory safety precaution. The obligatory operation is

indicated symbolically in or near the circle.

This indicates warning or caution. The contents are indicated symbolically

in or near the triangle.

This indicates a note. The contents are described in the box.

These indicate that the marked part should be recycled.

MT9812B

Multi Channel Box

Service Manual

15 February 1999 (First Edition)

25 April 2002 (Third Edition)

the publisher.

The contents of this manual may be changed without prior notice.

Printed in Japan

This indicates a very dangerous procedure that could result in death or serious

injury if not performed properly.

This indicates a hazardous procedure that could result in death or serious injury

if not performed properly.

This indicates a hazardous procedure or danger that could result in light-to-severe

injury, or loss related to equipment malfunction, if proper precautions are not taken.

Safety Symbols

iii

For Safety

For safety, do not open the equipment covers.

If repair is required, contact the sales representative, branch office, or agent at the

telephone number and address given in this document or in the equipment opera-

tion manual.

Although not recommended by Anritsu Corporation, if it is really imperative to

open the covers for emergency repair, take great care not to touch any dangerous

parts. Always request repair by a trained engineer who understands the hazards.

Anritsu Corporation will not accept liability for any injuries sustained as a result of

opening the equipment covers.

Part Names & Part Numbers

Please specify the part numbers shown in the parts list when making

inquiries or when ordering parts. There may be a difference between

the names of parts used in this manual and the parts actually used in

the equipment or supplied for repair. This is because equivalent

parts with the same functions, performance and reliability as the

parts specified in the circuit diagrams and parts list have been used

or supplied. Since the parts are equivalent, they have absolutely no

adverse effect on the equipment specified functions, performance or

reliability.

For Safety

WARNING

1. ALWAYS refer to the operation manual when working near loca-

tions at which the alert mark shown on the left is attached. If the

operation, etc., is performed without heeding the advice in the

operation manual, there is a risk of personal injury. In addition,

the equipment performance may be reduced.

Moreover, this alert mark is sometimes used with other marks and

descriptions indicating other dangers.

2. Laser radiation warning

• NEVER look directly into the cable connector on the equip-

ment nor into the end of a cable connected to the equipment.

If laser radiation enters the eye, there is a risk of injury.

• Laser Radiation Markings on a following page show the Laser

Safety label attached to the equipment near the cable connec-

tor.

3. When supplying power to this equipment, connect the accessory

3-pin power cord to a 3-pin grounded power outlet. If a grounded

3-pin outlet is not available, before supplying power to the equip-

ment, use a conversion adapter and ground the green wire, or

connect the frame ground on the rear panel of the equipment to

ground. If power is supplied without grounding the equipment,

there is a risk of receiving a severe or fatal electric shock.

4. This equipment cannot be repaired by the user. DO NOT attempt

to open the cabinet or to disassemble internal parts. Only Anritsu-

trained service personnel or staff from your sales representative

with a knowledge of electrical fire and shock hazards should ser-

vice this equipment. There are high-voltage parts in this equip-

ment presenting a risk of severe injury or fatal electric shock to

untrained personnel. In addition, there is a risk of damage to pre-

cision parts.

5. This equipment should be used in the correct position. If the cabi-

net is turned on its side, etc., it will be unstable and may be dam-

aged if it falls over as a result of receiving a slight mechanical

shock.

Repair

WARNING

Falling Over

For Safety

CAUTION

1. Before changing the fuses, ALWAYS remove the power cord from

the poweroutlet and replace the blown fuses. ALWAYS use new

fuses of the type and rating specified on the fuse marking on the

rear panel of the cabinet.

T___A indicates a time-lag fuse.

___A or F___ A indicate a normal fusing type fuse.

There is risk of receiving a fatal electric shock if the fuses are

replaced with the power cord connected.

2. Keep the power supply and cooling fan free of dust.

•Clean the power inlet regularly. If dust accumulates around

the power pins, there is a risk of fire.

•Keep the cooling fan clean so that the ventilation holes are not

obstructed. If the ventilation is obstructed, the cabinet may

overheat and catch fire.

Changing Fuse

CAUTION

Cleaning

WARNING

This equipment uses parts radiating Class 3 laser radiation. The

warning labels shown on the next page are attached near the laser-

radiation locations.

The product name and the danger classification specified by JIS,

IEC60825 and 21CFR1040.10 are explained below.

Type JIS, IEC60825 21 CFR 1040

MU952501A Class 3A Class III b

MU952502A Class 3A Class III b

MU952503A Class 3A Class III b

MU952504A Class 3A Class III b

MU952505A Class 3A Class III b

MU952601A Class 3A Class III b

MU952602A Class 3A Class III b

MU952603A Class 3A Class III b

MU952604A Class 3A Class III b

MU952605A Class 3A Class III b

MU952606A Class 3A Class III b

MU951301A Class 3A Class III b

MU951501A Class 3A Class III b

MU951001A Class 3A Class III b

MU951302A Class 3A Class III b

MU951502A Class 3A Class III b

MU951002A Class 3A Class III b

MU954501A Class 1 Class I

Class 1, Class 2 and Class 3 indicates the degree of danger of the

laser radiation outlined below as defined by JIS, IEC60825 and

21CFR1040.10.

Laser Radiation Markings

For Safety

vii

For Safety

WARNING

Class 1 Safe laser presenting no danger when used according to

design specifications.

Class 2 Laser radiating in 400 to 700 nm wavelength range. In

principal, this class of laser is not safe, but the danger to

the eyes is eliminated by the eye avoidance reaction in-

cluding the blink response.

Class 3A Laser radiating in 400 to 700 nm wavelength range. The

danger to the eyes is eliminated by the eye avoidance

reaction including the blink response. For lasers radiat-

ing at other wavelengths, the degree of danger to the na-

ked eyes is not greater than Class 1.

Class 3B The eyes will be damaged if direct laser radiation enters

the eyes. Normally there is no danger if the diffused

beam is observed.

viii

For Safety

Laser Radiation Markings

<IEC>

<21 CFR 1040>

<IEC>

DANGER

INVISIBLE LASER RADIATION

CLASS 3A LASER PRODUCT

DO NOT STARE INTO BEAM OR VIEW

DIRECTLY WITH OPTICAL INSTRUMENTS

INVISIBLE LASER RADIATION

AVOID DIRECT EXPOSURE

TO BEAM

MAXIMUM

WAVELENGTH

CLASS IIIb LASER PRODUCT

(MAX) (PULSE DURATION) (WAVELENGTH)

AVOID EXPOSURE

INVISIBLE LASER RADIATION

EMITTED FROM THIS APERTURE

<21 CFR 1040>

INDENTIFICATION LABEL

ANRITSU CORP.

10-27 MINAMIAZABU 5-CHOME

MINATO-KU, TOKYO, 106, JAPAN

MANUFACTURED AT:ANRITSU CORP.

ATSUGI PLANT. 19

CERTIFICATION LABEL

THIS PRODUCT CONFORMS TO

ALL APPLICABLE STANDARDS

UNDER 21 CFR 1040.10

<21 CFR 1040>

For Safety

CAUTION

This equipment uses a lithium battery to back-up the memory. This

battery must be replaced by a service engineer when it has reached

the end of its useful life; contact the Anritsu sales section or your near-

est representative.

Note: The battery used in this equipment has a maximum useful life of

7 years. If should be changed before this period has elapsed.

Changing memory

back-up battery

Notes On Export Management

This product and its manuals may require an Export Li-

cense/Approval by the Government of the product’s country

of origin for re-export from your country.

Before re-exporting the product or manuals, please contact

us to confirm whether they are export-controlled items or

not.

When you dispose of export-controlled items, the products/

manuals are

needed to be broken/shredded so as not to be

unlawfully used for military purpose.

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