Sony BKPF-L753A

2 (E) BKPF-L753A

6. Schematic Diagrams

ADA-55 ..................................................................................................................6-2

CN-1855/1856 ........................................................................................................6-3

DD-36..................................................................................................................... 6-4

7. Board Layouts

ADA-55 ..................................................................................................................7-1

DD-36..................................................................................................................... 7-2

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