Sony BKPF-L753A Manual Structure

3 (E)

BKPF-L753A

Purpose of this manual This manual is the maintenance manual of Analog Audio Distribution Board

BKPF-L753A.

This manual is intended for use by trained system and service engineers, and

describes the information for periodic maintenance and detailed service.

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 ADA-55, DD-36 and

CN-1855/1856 boards.

Section 7 Board Layouts

This section describes the board layouts for the ADA-55 and DD-36 boards.

Related manuals The following manual is prepared for this unit.

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.Installation Manual (Supplied with BKPF-L753A)

This manual describes the information on BKPF-L753A installing.

Manual Structure

Contents

Main Page Table of Contents Page Manual Structure Purpose of this manual Contents Related manuals Page Section 1 Service Overview 1-2. IC Link Replacement 1-3. Shield Case (S/N10001 through S/N17325) 1-1. Notes on Repair Parts 1-2 (E) 1-4. Name and Function of Switch/Indicator/etc. Switches/shorting plugs (Factory default settings are indicated by a \\ \\ \ mark) Indicator Gain adjusting VR 1-5. Unleaded Solder Page 2-1 (E) Section 2 Electrical Alignment 2-1. Electrical Alignment Overview 2-1-1. Required Equipment and Tools Use the equipment listed below or the equivalent. 2-1-2. Connection 2-3. Input/Output Gain Adjustment 2-2. Preparation of Adjustment 2-4. CMRR (Common Mode Rejection Ratio) Adjustment 2-5. Input/Output Gain Adjustment for Customer Setting Page Section 3 Spare Parts Page Page Page 4-1 Section 4 Semiconductor Pin Assignments Index 4-2 DIODE Diode, LED, Transistor LED TRANSISTOR 4-3 IC PCF8574AT (PHILIPS) NJM5534M (JRC) NJM5534M(TE2) MAX742CWP-TE2 (MAXIM) Page 5-1 Section 5 Block Diagram OverallOverall DD-36 Overall DETECT INV (R)(2/2) Page Page 6-2 (b) SUFFIX: -14 ADA-55 RV4:GAIN ADJ. RV3:GAIN ADJ. ADA-55 BOARD NO. 1-668-838-14 SUFFIX: -14 Q37 Q37 UN2221-TX UN2221-TX Page 6-2 (a) SUFFIX: -11, 12 SUFFIX: -11, 12 ADA-55 6-2 (a) ADA-55 BOARD NO. 1-668-838-11, 12 Q5 S/N 10001-11870 S/N 10001-10290 ONLY CN-1855 CN-1855/1856CN-1855/1856 BOARD NO. 1-674-068-11, 12 LOT NO. 812- CN-1856 BOARD NO. 1-674-069-11, 12 DD-36 IC1 Q1 Q2 DD-36DD-36 Section 7 Board Layouts SUFFIX: -14 ADA-55 7-2 7-2 ADA-55 7-3 DD-36 DD-36DD-36