EasyManua.ls Logo

Onkyo HT-R320 Service Manual

Onkyo HT-R320
56 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
HT-R320
SERVICE MANUAL
SERVICE MANUAL
AV RECEIVER
Silver model
MODEL HT-R320
Ref. No. 3819
082004
SMDD
120V AC, 60Hz
RC-479S
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
Question and Answer IconNeed help?

Do you have a question about the Onkyo HT-R320 and is the answer not in the manual?

Onkyo HT-R320 Specifications

General IconGeneral
Channels5.1
Audio Formats SupportedDolby Digital, DTS
FM TunerYes
Frequency Response20 Hz - 50 kHz
Digital Audio Inputs2 Optical, 1 Coaxial
HDMI Outputs1
USB PortNo
AM TunerYes
Tuning RangeFM: 87.5-108 MHz
Speaker Load Impedance6 Ohms - 16 Ohms
Video ConnectionsComposite, Component
Amplifier TypeDiscrete
Input Sensitivity and Impedance200 mV/47 kOhms (Line)
Signal-to-Noise Ratio100 dB

Summary

Safety Warning for Service Personnel

Product Specifications

Amplifier, Tuner, and General Specifications

Details on audio, tuner, power, dimensions, and connectivity specs.

Service Procedures

Fuse Replacement, Safety Checks, and Initialization

Procedures for fuse replacement, safety checks, and unit initialization.

Microprocessor Version and Memory Preservation

Steps to check microprocessor version and information on memory backup.

Operation Checks - Protection Circuits

DC Voltage and Current Detection Protector Tests

Procedures for testing DC voltage and current protection circuits in test mode.

Operation Checks - Power Supply and Thermal Detection

Power Modes and Output/Thermal Detection Procedure

Explanation of power modes and steps for output/thermal detection checks.

Operation Checks - Detection Test Procedures

Output Level and Thermal Detection Testing

Detailed steps for performing output level and thermal detection tests.

Operation Checks - DSP Debug Mode

DSP Debug Mode Entry and Parameters

Instructions to enter DSP debug mode and explanation of its display parameters.

Exploded Views - Component Identification

Schematic Diagrams - Pre-Amplifier Section

Schematic Diagrams - Display and Video Section

Schematic Diagrams - Interface Boards

Terminal, Video, and Headphone Jack Boards

Circuit diagrams for interface, video, and headphone jack PC boards.

Schematic Diagrams - Driver Amplifier Section

Schematic Diagrams - Power Amplifier Section

Schematic Diagrams - Power Supply and Speaker Terminals

Power Supply and Speaker Terminal Board Schematics

Circuit diagrams for power supply and speaker terminal PC boards.

Schematic Diagrams - Regulator and Control Boards

Regulator and Terminal Board Schematics

Circuit diagrams for regulator and terminal PC boards.

Adjustment Procedures - Idling Current

Idling Current Adjustment Setup and Steps

Preparation and procedure for adjusting idling current using test points and resistors.

Exploded View Parts List

Printed Circuit Board Parts Lists

PC Board Component Details (U1, U8-U12)

Component lists for pre-amplifier, driver, interface, and speaker terminal boards.

PC Board Component Details (U17-U26)

Component lists for power amplifier, terminal, supply, and other PC boards.

Related product manuals