Sony BKPFL703A MAINTENANCE GUIDE

ANALOG VIDEO DISTRIBUTION BOARD

BKPF-L703A

MAINTENANCE MANUAL 1st Edition (Revised 1) Serial No. 10001 and Higher

! WARNING

This manual is intended for qualified service personnel only. To reduce the risk of electric shock, fire or injury, 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.

! WARNUNG

Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt. Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung dazu besitzen.

! AVERTISSEMENT

Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres. Pour toute réparation faire appel à une personne compétente uniquement.

BKPF-L703A

Table of Contents

Manual Structure

Purpose of this manual ........................................................................................ 3 (E)

Related manuals................................................................................................... 3 (E)

Contents ............................................................................................................... 3 (E)

1. Service Overview

1-1. Notes on Repair Parts............................................................................1-1 (E)

1-2. IC Link Replacement ............................................................................1-1 (E)

1-3. Unleaded Solder ....................................................................................1-1 (E)

1-4. Name and Function of Switch/Indicator ...............................................1-2 (E)

2. Electrical Alignment

2-1. Electrical Alignment Overview.............................................................2-1 (E)

2-1-1. Required Equipment and Tools............................................2-1 (E)

2-1-2. Connection ...........................................................................2-2 (E)

2-2. Preparation for Adjustment ...................................................................2-3 (E)

2-3. +5 V Power Voltage Adjustment..........................................................2-3 (E)

2-4. CMR (Common Mode Rejection) Adjustment .....................................2-4 (E)

2-5. VIDEO OUT Level Adjustment ...........................................................2-4 (E)

2-6. VIDEO OUT Frequency Response Adjustment ................................... 2-5 (E)

2-7. VIDEO OUT Offset Adjustment ..........................................................2-5 (E)

2-8. Vector Waveform Check.......................................................................2-6 (E)

2-9. DP & DG Check....................................................................................2-6 (E)

BKPF-L703A

3. Spare Parts

4. Semiconductor Pin Assignments

5. Block Diagram

Overall ....................................................................................................................5-1

1 (E)

6. Schematic Diagrams

CN-1982 ................................................................................................................. 6-1

VDA-56 ..................................................................................................................6-2

7. Board Layout

VDA-56 ..................................................................................................................7-1

2 (E)

BKPF-L703A

Purpose of this manual

Related manuals

Manual Structure

This manual is the maintenance manual of Analog Video Distribution Board BKPFL703A. This manual is intended for use by trained system and service engineers, and describes the information for maintenance and detailed service.

The following manuals are prepared for BKPF-L703A.

. Installation Manual (Supplied with BKPF-L703A)

This manual describes the information on installing the BKPF-L703A.

. “Semiconductor Pin Assignments” CD-ROM (Available on request)

This “Semiconductor Pin Assignments” CD-ROM allows you to search for semiconductors used in B&P Company equipment. Semiconductors that cannot be searched for on this CD-ROM are listed in the service manual for the corresponding unit. The service manual contains a complete list of all semiconductors and their ID Nos., and thus should be used together with the CD-ROM. Part number: 9-968-546-XX

Contents

This manual is organized by following sections.

Section 1 Service Overview

This section explains the notes on repair parts and IC link replacement.

Section 2 Electrical Alignment

This section explains the adjustment after replacing part.

Section 3 Spare Parts

This section describes the spare parts.

Section 4 Semiconductor Pin Assignments

This section describes the pin assignments of semiconductor.

Section 5 Block Diagram

This section describes the overall block diagram.

Section 6 Schematic Diagrams

This section describes the schematic diagrams of the VDA-56 and CN-1982 boards.

Section 7 Board Layouts

This section describes the board layout for the VDA-56 board.

BKPF-L703A

3 (E)

Section 1

Service Overview

1-1. Notes on Repair Parts

1. Safety Related Components Warning

Components marked ! are critical to safe operation. Therefore, specified parts should be used in the case of replacement.

2. Standardization of Parts

Some repair parts supplied by Sony differ from those used for the unit. These are because of parts commonality and improvement. Parts list has the present standardized repair parts.

3. Stock of Parts

Parts marked with “o” at SP (Supply code) column of the spare parts list may not be stocked. Therefore, the delivery date will be delayed.

For the replacement of the VDA-56 board, please buy BKPF-L703A because VDA-56 mounted circuit board is not prepared for spare parts.

1-2. IC Link Replacement

An IC link is critical parts to safe operation. Replace this component with Sony parts whose part numbers appear in this manual published by Sony. If not, this may cause a fire or electric shock. Be sure to use the specified component in this manual.

The IC link is mounted on the VDA-56 board. Be sure to replace with the specified IC link as shown below after removing the foreign substances that may cause the shorts.

VDA-56 Board

Ref No. (Address) Description Part No.

PS301 (J-3) IC link 2 A !1-533-282-21

1-3. Unleaded Solder

Boards requiring use of unleaded solder are printed with a lead free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.)

: LEAD FREE MARK

m . Be sure to use the unleaded solder for the printed circuit

board printed with the lead free mark.

. The unleaded solder melts at a temperature about 40 dC

higher than the ordinary solder, therefore, it is recommended to use the soldering iron having a temperature regulator.

. The ordinary soldering iron can be used but the iron tip

has to be applied to the solder joint for a slightly longer time. The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful.

BKPF-L703A

1-1 (E)

1-4. Name and Function of Switch/Indicator

S101

RV102

RV103

D101

D302

Switches/Shorting plug (Factory default settings are indicated by a

No. Ref. No. Name Function

1 S101 CLAMP \ ON: Under normal operation

2 COR101 SINGLE/DIFFERENTIAL \ SINGLE: Under normal operation

OFFON

Main Board (VDA-56 Board: Side A)

OFF: When a signal containing no sync signal is input to the VIDEO IN

connector

DIFFERENTIAL: When a differential signal is input to the VIDEO IN connector

\ mark)

COR101

Indicators

No. Ref.No. Name Function

3 D101 VIDEO IN Lights in green: When an analog video signal is input to the VIDEO IN connector

4 D302 _5 V Lights in green: A power supply of _5 V is normal

Lights in red: When a signal is not input to the VIDEO IN connector

Lights in red: A power supply of _5 V is abnormal

Volumes

No. Ref.No. Name Function

5 RV102 EQ Corrects and adjusts the deterioration in the frequency characteristics of the video

signal input to the VIDEO IN connector

6 RV103 GAIN Corrects and adjusts the deterioration in the level of the video signal input to the

VIDEO IN connector

1-2 (E)

BKPF-L703A

Section 2

Electrical Alignment

2-1. Electrical Alignment Overview

2-1-1. Required Equipment and Tools

Use the equipment listed below or the equivalent.

Item Model Remarks

Extension board EX-731 (Part No.A-8322-598-A) For the VDA-56 board extension Analog video signal generator* Tektronix 1410 For 525 mode

Tektronix 1411 For 625 mode

Analog video signal generator* TSG-170A For 525 mode

TSG-271A For 625 mode Audio signal generator* Tektronix SG505 (option 02 type) Audio level meter*_ Oscilloscope* Tektronix 2465B Interface unit Sony PFV-L10/L02 Composite video monitor Sony PVM-1444Q Waveform/vector monitor* Tektronix 1780R For 525 mode

Tektronix 1781R For 625 mode Digital voltmeter*_ Adjustment screwdriver*_ Insulation type Resister (600 Z) _ within 1% Terminal connector _ BNC type (Feed-through), 75 Z, 3 pcs

*: Use the equipment after calibration has been completed.

BKPF-L703A

2-1 (E)

2-1. Electrical Alignment Overview

2-1-2. Connection

The interface unit in the connection diagram shown below uses PFV-L10.

VDA-56 board

PFV-L10 (Side)

PFV-L10 (Rear)

Extension board EX-731

Signal generator (TSG-170A/271A)

VIDEO IN

75 Z terminator

VIDEO OUT

BKPF-L703A

75 Z terminator

Waveform/vector monitor (1780R/1781R)

Signal generator (1410/1411)

75 Z terminator

Composite video monitor (PVM-1444Q)

Digital voltmeter

CH-A

m . To the loop-through output connector, be sure to insert a 75 Z terminator. . Use a cable of about 1 m in length to connect between a signal generator (TSG-170A/271A) and the

VIDEO IN connector of BKPF-L703A.

. Obtain the output signal of signal generator 1410/1411 from pin 6 of the MODULE OUTPUTS

connector on the connector panel.

Oscilloscope (2465B)

CH1

PIX OUT

When performing the CMR (Common Mode Rejection) adjustment (Section 2-4)

VDA-56 board

Audio signal generator (SG505)

OUTPUT

COM

Audio level meter

INPUT

PFV-L10 (Side)

Extension board EX-731

600 Z

PFV-L10 (Rear)

VIDEO IN

BKPF-L703A

VIDEO OUT

75 Z terminator

L703A

2-2 (E)

BKPF-L703A

2-2. Preparation for Adjustment

2-3. +5 V Power Voltage Adjustment

2-2. Preparation for Adjustment

1. Extend the VDA-56 board with the extension board EX-731.

2. Set the switch and variable resistors (RV) on the VDA-56 board as shown below.

Ref.No. (Address) Initial setting

S101 (C-1) ON RV102 (A-1) Counterclockwise 3 fully RV103 (A-2) Counterclockwise 3 fully

3. Turn on the power of the PFV-L10/L02 and warm up the unit for about 10 minutes.

S101

RV102

RV103

OFFON

2-3.

+5 V Power Voltage Adjustment

Be sure to perform the “+5 V Power Voltage Adjustment” before performing other adjustments.

Measuring equipment: Digital voltmeter

1. Set the digital voltmeter as follows: Range: AUTO Mode: DC V

2. Connect the probe of the digital voltmeter as follows:

+: TP301/VDA-56 (C-3) _: E1/VDA-56 (C-1)

3. Adjust the voltage. Adjustment point: 1RV301/VDA-56 (C-3) Specification: 5.00 ±0.05 V dc

COR101

RV104

RV103

TP301

RV301

VDA-56 board (Side A)

BKPF-L703A

2-3 (E)

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