Sony TA-AV431 User Manual

TA-AV431/AV931
SERVICE MANUAL
US Model
Mexican Model
TA-AV431
US Model
TA-AV531
This set is the amplifier section
in SEN-431CD/531CD
This photo is TA-AV531
SPECIFICATIONS
Output (TA-AV531)
TAPE Phono jacks Voltage 150 mV
(REC OUT) Impedance 1 kilohm
SPEAKERS Accepts speakers of 8 — 16 ohms
(Front, Rear)
SPEAKERS Accepts speakers of 4 — 16 ohms
(Center)
HEADPHONES | Stereo phone jack | Accepts low and high impedance
headphones.
Output (TA-AV431) SPEAKER: Accepts speakers of 8 to 16 ohmes
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 8-ohm loads, both channels driven, from 40 — 20,000 Hz; rated 135
(TA-AV531), 110 (TA-AV431) watts per channel minimum RMS power, with
less than 0.9% total harmonic distortion from 250 milliwatts to rated output.
Power bandwidth (IHF) 30 Hz — 30 kHz (8 ohms) (TA-AV531)
Dynamic headroom 1.7 dB (78 IHF) (TA-AV531)
Harmonic distortion Less than 0.9% at rated output (Surround OFF)
(TA-AV531)
Frequency response PHONO: RIAA equalization curve
CD, VIDEO, TUNER, TAPE:
10 Hz — 50 kHz + 3 dB (TA-AV531)
PHONO: RIAA curve
CD, VIDEO: 10 Hz — 50 kHz + 3 dB (TA-AV431)
15 W + 15 W (at front off 8 ohmes) (TA-AV531)
10 W + 10 W (at front off 8 ohmes)(TA-AV431)
30 W (at front off 4 ohmes) (TA-AV531)
27 (8 ohms, 1 kHz) (TA-AV531)
Rear output
Center output
Damping factor
Input (TA-AV531)
Input jack | Jack type | Sensitivity | Impedance | S/N (weighting
network, input level)
Phono 3.0 mV 50 kilohms | 71 dB
: 75 dB*
(A, 3.0 mV)
Phono 250 mV 50 kilohms | 92 dB
83 dB*
(A, 250 mV)
(TA-AV431)
es ee
PHONO 2.5 mV 50 kilohms
50 kilohms
*'78 IHF
CD, VIDEO
HEADPHONES: Accepts headphones with low and
high impedance
GRAPHIC EQUALIZER controls
Boost/Cut range: + 8 dB (100 Hz, 330 Hz, 1 kHz,
3.3 kHz) + 6 dB (10 kHz)
Approx, 430 x 145 x 360 mm (w/h/d)
(17 x5 % x 14% inches)
(including projecting parts and controls)
Weight Approx. 9.9 kg (21 lb 14 0z): TA-AV531
Approx. 9.5 kg (20 Ib 15 oz): TA-AV431
Dimensions
General
Power requirements 120 V AC, 60 Hz
Power consumption 250 W (TA-AV531)
220 W (TA-AV431)
AC outlets 2 switched, 120 W/1 A max. (TA-AV531)
— Continued on next page —
INTEGRATED STEREO AMPLIFIER
SONY.

Sony TA-AV431 Specifications

General

Brand	Sony
Model	TA-AV431
Category	Amplifier
Language	English

Summary

Audio & General Specifications

Power Output and Harmonic Distortion

Details amplifier's power output capabilities and total harmonic distortion levels.

Frequency Response and Input/Output

Specifies audio frequency response and input/output terminal characteristics.

Physical & Power Specifications

Covers unit dimensions, weight, power requirements, and consumption.

Service Safety and Leakage Testing

Post-Service Safety Check-out

Procedure for essential safety checks after repair before customer return.

AC Leakage Current Testing Procedure

Method and limits for measuring AC leakage current from exposed metal parts.

Section 1: General - Remote Commander

Remote Commander Functional Blocks

Explains the operation of each control section on the remote commander.

Section 2: IC Pin Functions

IC101 µPD75206GF Pin Assignments

Details the pin functions and assignments for the µPD75206GF integrated circuit.

IC Pin Functions: LV100M Details

IC304 LV100M Pin Descriptions

Explains the function of each pin for the LV100M integrated circuit.

Input Address Port Timing

Short Mode Timing Diagrams

Illustrates data input timing sequences for the short mode operation.

Section 3 Diagrams: Layouts

Circuit Board Physical Locations

Shows the placement of major circuit boards within the unit's chassis.

Semiconductor Lead Configuration

Provides pin outlines and lead configurations for various semiconductors.

Block Diagram: System Signal Flow

Overall System Signal Path

Illustrates the signal flow and interconnections between major functional blocks.

Printed Wiring Board: Main Section

Main Board Component Placement Guide

Details the physical layout and location of components on the main printed circuit board.

Schematic Diagram: Main Section

Main Section Electrical Schematics

Provides the detailed electrical schematic for the main amplifier section.

Schematic Diagram: Display Section

Display Section Electrical Schematics

Presents the detailed electrical schematic for the display section of the unit.

IC Block Diagrams

Integrated Circuit Functional Blocks

Illustrates the internal functional blocks of key integrated circuits.

Section 4: Exploded Views - Front Panel

Front Panel Assembly Components List

Lists and illustrates the parts comprising the front panel assembly.

Section 4: Exploded Views - Board Sections

Internal Board Assembly Views

Provides exploded views for various internal circuit boards and their components.

Section 5: Electrical Parts List

Component Lists by Board Type

Lists electrical components categorized by circuit board, starting with Center, Connect 2, and Display.

Service Manual Correction 1

Correction to Power Board Part Number

Corrects an incorrect part number for the Power Board in the Electrical Parts List.

Service Manual Correction 2

Updates for Exploded Views and Parts List

Rectifies discrepancies found in Exploded Views and Electrical Parts List entries.