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Onkyo TX-NR545 Service Manual

Onkyo TX-NR545
131 pages
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Service Manual
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 MESUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY
INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE
CUSTOMER.
Published by Onkyo & Pioneer Corporation Grobal CS Department
TX-NR545
AV RECEIVER
Ref.No. : 4519
Pre Issue (15-May)
Final Issue (15-Jun)
CONTENTS
Front Cover (This page)
Note for Parts List
Panel
Reset
Amp Diag Mode after Abnormal Conditions
Model and Destination
Firmware
Adjustment ( Unnecessary )
Hookup and Setting
Trouble Shoot
Disassembly
Schematic Diagram
Exploded View
Appendix

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Onkyo TX-NR545 Specifications

General IconGeneral
Impedance16 Ω
Receiver typeSurround
Frequency range100 - 10000 Hz
Input sensitivity200 mV
Audio output channels7.2 channels
Signal-to-Noise Ratio (SNR)100 dB
Total Harmonic Distortion (THD)0.08 %
Dynamic power per channel (3 Ohm)160 W
Dynamic power per channel (4 Ohm)125 W
Dynamic power per channel (8 Ohm)85 W
Power output per channel (1KHz@6 Ohm)120 W
Power output per channel (20-20KHz@8 Ohm)- W
HDMI in6
Audio (L/R) in8
Composite video in4
Digital audio coaxial in1
Component video (YPbPr/YCbCr) in2
Connectivity technologyWired & Wireless
Speakers connectivity type-
Audio formats supportedAAC, FLAC, LPCM, MP3, OGG, WAV, WMA
Ethernet LANYes
Bluetooth version2.1+EDR
Bluetooth profilesA2DP, AVRCP
AM band range522 - 1611 kHz
FM band range87.5 - 108 MHz
Supported radio bandsAM, FM
Preset stations quantity40
Internet radio services supportedSpotify, TuneIn
Optical drive includedNo
Product colorSilver
Audio decodersDolby TrueHD, DTS-HD Master Audio
Damping factor60
AC input voltage220-240 V
AC input frequency50 - 60 Hz
Power consumption (standby)0.15 W
Power consumption (typical)430 W
Package weight11500 g
Weight and Dimensions IconWeight and Dimensions
Depth329 mm
Width435 mm
Height173.5 mm
Weight8600 g

Summary

Panel Description

Reset Procedures

Unit Reset Procedure

Step-by-step guide to reset the AV receiver unit to its default state.

Abnormal Condition Diagnostics

Protect Mode Explanation

Description of unit behavior when abnormal conditions are detected.

Self-Diagnostic Operation

Details on how the self-diagnostic function operates.

Self-Diagnostic Display Modes

Information on how diagnostic results are displayed on the unit's FL tube.

Repair and Cause Confirmation

Steps for confirming protect cause and clearing diagnostic information.

Model and Destination Check

Firmware Management

Firmware Version Check and Update Preparation

Instructions for checking firmware versions and preparing for updates.

Firmware Update Procedure (Service Mode)

Detailed steps for updating firmware via USB in service mode.

Troubleshooting Hardware Issues

Troubleshooting No Sound (HDMI Input)

Identifies PCBs related to no sound from HDMI input.

Troubleshooting No Sound (Optical Input)

Identifies PCBs related to no sound from optical input.

Troubleshooting No Sound (Analog Input)

Identifies PCBs related to no sound from analog input.

Disassembly Procedures

Schematic Diagrams

Audio Block Diagram

Block diagram illustrating the audio signal path and processing.

Video Block Diagram

Block diagram illustrating the video signal path and processing.

Digital Audio Block Diagram

Block diagram detailing digital audio signal flow.

Amplifier Section Schematic

Schematic diagram of the amplifier circuits.

Amplifier Voltage Amplification Schematic

Schematic detailing the voltage amplification stages of the amplifier.

Power Supply Schematic

Schematic diagram of the power supply unit.

MPU Section Schematic

Schematic diagram of the Microprocessor Unit.

VMPU and Power Supply Schematic

Schematic for VMPU and related power supply circuits.

HDMI and Decoder Schematic

Schematic diagram of the HDMI interface and decoder circuitry.

Video Processor Schematic

Schematic diagram of the video processing unit.

ARM, DIR, and DAC Section Schematic

Schematic showing ARM processor, DIR, and DAC connections.

DSP Section Schematic

Schematic diagram of the Digital Signal Processor.

Exploded View

Appendix

Test Mode Entry Procedure

Steps to enter various test modes for the unit.

Audio Debug Mode

Instructions for entering and using the audio debug mode.

Service Information Mode

Procedure to enter and exit service information mode for status analysis.

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