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Onkyo A-9050 Service Manual

Onkyo A-9050
102 pages
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A-9050
RC-830S
Integrated Amplifier
Black and Silver models
MODEL A-9050(B)/(S)
120V AC, 60Hz
230V AC, 50Hz
230V AC, 50Hz
B MDC
B MPP
S MPP
Ref. No. 4412
092012

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Onkyo A-9050 Specifications

General IconGeneral
Output level175 mV
Damping factor60
Amplifier classA
Output impedance2200 Ω
Audio output channels2.0 channels
Peak power per channel75 W
Signal-to-Noise Ratio (SNR)110 dB
Total Harmonic Distortion (THD)0.08 %
AC (power) inYes
Audio (L/R) in5
Audio (L/R) out1
Digital audio coaxial in2
Speakers connectivity typeRCA
PurposeHome
Product colorSilver
Volume controlRotary
Connectivity technologyWired
AC input voltage230 V
AC input frequency50 Hz
Power consumption (standby)0.3 W
Power consumption (typical)160 W
Package weight10500 g
Weight and Dimensions IconWeight and Dimensions
Depth330.3 mm
Width435 mm
Height139 mm
Weight820 g

Summary

Service Procedure

Setting for shipping

Details the procedure for setting the amplifier for shipping.

Operation Check - 1

Confirm Relay operation

Verifies the normal operation of speaker relays and sound output.

Confirm of remote control operations

Checks the functionality of remote control and RI operations.

Confirm of Audio Sense operations

Verifies automatic audio input detection and power on/off behavior.

Confirm of 12V trigger operations

Tests the 12V trigger input and output functionality.

Operation Check - 2

Voltage protection

Checks the unit's response to voltage protection triggers.

Current protection

Verifies the unit's response to current protection triggers.

Exploded Views

Exploded Views - 1

Visual breakdown of the amplifier's external and major internal components.

Exploded Views - 2

Detailed visual breakdown of internal components and assembly.

Exploded Views - 3

Further detailed visual breakdown of internal components and assembly.

Schematic Diagrams

Block Diagram

High-level overview of the amplifier's functional blocks and connections.

Audio Section

Detailed schematic of the amplifier's audio processing circuits.

Power Amplifier Section

Schematic detailing the power amplification stage of the amplifier.

Display Section

Schematic of the amplifier's display and control interface circuitry.

Digital Section

Schematic of the amplifier's digital signal processing and control circuits.

Exploded View Parts List

Semi-conductor Components

List of semiconductor components used in the amplifier.

Chassis Screws and Hardware

List of screws, legs, and other chassis-related hardware.

Cabinet and Related Parts

List of cabinet parts, knobs, plates, and covers.

Trans Coils and Switches

List of coils, fuses, and switches used in the amplifier.

Packing Procedures Parts List

List of parts required for packing the unit.

Accessories

List of included accessories and warranty information.

PC Board Parts List

Semiconductor Components

List of semiconductor components on specific PC boards.

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