Sony BKM-301HD Manuale utente

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

SERVICE MANUAL

MODEL DEST

BKM-301HD

US/CND

HD SDI INPUT ADAPTOR

POWER BLOCK B BLOCK GC BOARD

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

!WARNING

This manual is intended for qualified service personnel only.

To reduce the risk of electric shock, fire or injuly, do not perform any servicing other than that

contained in the operating instructions unless you are qualified to do so. Refer all servicing to

qualified service personnel.

WARNING!!

AN ISOLATION TRANSFORMER SHOULD BE USED DURING

ANYSERVICETOAVOIDPOSSIBLESHOCKHAZARD,BECAUSE

OF LIVE CHASSIS.

THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED

TO THE AC POWER LINE.

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTSIDENTIFIEDBYSHADINGANDMARK!ONTHE

SCHEMATICDIAGRAMS,EXPLODEDVIEWSANDINTHEPARTS

LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE

COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS

APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS

PUBLISHED BY SONY.

ATTENTION!!

AFIND’EVITERTOUTRISQUED’ELECTROCUTIONPROVENANT

D’UN CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR

D’ISOLEMENTDOITETREUTILISÉLORSDETOUTDÉPANNAGE.

LE CHÁSSIS DE CE RÉCEPTEUR EST DIRECTEMENT

RACCORDÉ Á L’ALIMENTATION SECTEUR.

ATTENTION AUX COMPOSANTS RELATIFS ÁLA

SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET PAR UNE

MAPQUE ! SUR LES SCHÉMAS DE PRINCIPE, LES VUES

EXPLOSÉES ET LES LISTES DE PIECES CONT D’UNE

IMPORTANCE CRITIQUE POUR LA SÉCURITÉ DU

FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES

COMPOSANTSSONYDONTLENUMÉRODEPIÉCEESTINDIQUÉ

DANS LE PRÉSENT MANUEL OU DANS DES SUPPLÉMENTS

PUBLIÉS PAR SONY.

1 (P)

SAFETY CHECK-OUT

After correcting the original service problem, perform the

following safety checks before releasing the set to the customer:

1. Checktheareaofyourrepair forunsolderedorpoorly-soldered

connections.Check the entireboard surface forsolder splashes

and bridges.

2. Checktheinterboardwiringtoensurethatnowiresare“pinched”

or contact high-wattage resistors.

3. Checkthatallcontrolknobs,shields,covers,groundstraps,and

mounting hardware have been replaced. Be absolutely certain

that you have replaced all the insulators.

4. Lookforunauthorizedreplacementparts,particularlytransistors,

thatwereinstalledduringapreviousrepairPointthemouttothe

customer and recommend their replacement.

5. Look for parts which, though functioning, show obvious signs

ofdeterioration.Pointthemouttothecustomerandrecommend

their replacement.

6. Check the line cord for cracks and abrasion. Recommend the

replacement of any such line cord to the customer.

TABLE OF CONTENTS

1. OPERATING INSTRUCTIONS ....................................................... 1-1

2. CIRCUIT ADJUSTMENTS

2-1. Preparations.................................................................................................. 2-1

2-2. B Board Adjustments ................................................................................... 2-2

3. CIRCUIT DESCRIPTIONS ............................................................... 3-1

4. SEMICONDUCTORS ........................................................................... 4-1

5. EXPLODED VIEWS

5-1. Main Unit ..................................................................................................... 5-2

6. ELECTRICAL PARTS LIST.............................................................. 6-1

7. BLOCK DIAGRAMS

7-1. B Block Diagram.......................................................................................... 7-1

7-2. GC Block Diagram....................................................................................... 7-2

8. DIAGRAMS

8-1. Printed Wiring Boards/Schematic Diagrams ............................................... 8-1

B ..................................................................................................... 8-2

GC ..................................................................................................... 8-6

1-1

SECTION 1

OPERATING INSTRUCTIONS This section is extracted from

operation manual.

1997 by Sony Corporation

BKM-301HD

3-861-132-03 (1)

For installation, contact your Sony dealer.

Operating Instructions

Page 10

PHM-20M8U/14M8U

Monitors Available

HD SDI

Input Adaptor

1-2

For the customers in the USA

This equipment has been tested and found

to comply with the limits for a Class A digital

device, pursuant to Part 15 of the FCC

Rules. These limits are designed to provide

reasonable protection against harmful

interference when the equipment is

operated in a commercial environment.

This equipment generates, uses, and can

radiate radio frequency energy and, if not

installed and used in accordance with the

instruction manual, may cause harmful

interference to radio communications.

Operation of this equipment in a residential

area is likely to cause harmful interference

in which case the user will be required to

correct the interference at his own expense.

You are cautioned that any changes or

modifications not expressly approved in this

manual could void your authority to operate

this equipment.

English

Table of Contents

Overview...........................................................................12

Precautions ......................................................................12

Connections .....................................................................13

Operation..........................................................................14

Specifications ..................................................................15

Englsih

1-3

Overview

The HD SDI Input Adaptor BKM-301HD is an optional board

that provides the HD SDI signal input

(one line) for Sony HD

Trinitron Color Monitors, the PHM-20M8U and the PHM-

14M8U.

Precautions

On magnetism

Do not place the monitor near any devices that emit magnetism

(magnets, speakers, electric clocks, toys using magnets, health

instruments, etc.). Magnetism will cause picture bounce,

oscillations or picture discoloration.

Operating and storage locations

Avoid operating or storing the monitor under the following

conditions:

• Extremely hot or cold places

• Humid or dusty places

• Locations exposed to rain

• Locations subject to storing vibration

• Near a TV or radio station that radiates high-powered radio

frequencies

Others

• Do not apply excessive force to the board.

• Wear an anti-static wristband when touching the board.

If the board is malfunctioning or causing errors, consult your

nearest Sony dealer.

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

1) The MONITOR OUTPUT signals do not satisfy the ON-LINE signal specifications.

Connections

HDW-500, etc.

Monitor

C (HD SDI) IN

HD SDI OUTPUT

Connect the monitor and the digital VTR as follows.

1-4

Operation

Follow the instructions below.

1Press the POWER switch on the monitor.

The power indicator (green) is turned on.

2Press the INPUT C button to switch the input.

The indicator (orange) is turned on and the HD SDI signal

is input.

INPUT

POWER

Specifications

Input/Output

HD SDI IN: BNC×1

Serial digital (1.485 Gbps)

Conform to SMPTE 292M, BTA-S004A

MONITOR OUT: BNC×1

*The MONITOR OUT signals do not

satisfy the ON-LINE signal

specifications.

Quantization: 10 bits/sampling

Frequency response:

Y: 24 MHz ± 3dB

: 12 MHz ± 3dB

Design and specifications are subject to change without notice.

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