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Onkyo HTP-420 User Manual

Onkyo HTP-420
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HTP-420
SERVICE MANUAL
SERVICE MANUAL
5.1-CH HOME THEATER SPEAKER PACKAGE
Black and Silver models
MODEL HTP-420(B)/(S)
Ref. No. 3808
042004
120V AC, 60Hz
120V AC, 60Hz
---
230-240V AC, 50Hz
---
---
BMDD
BMDC
---
BMPA
---
---
120V AC, 60Hz
120V AC, 60Hz
120V AC, 60Hz
230-240V AC, 50Hz
220-230V AC, 50/60Hz
230-240V AC, 50Hz
SMDD
SMDC
SMDT
SMPA
SMGT
SMPT
Front Speakers (L / R)
"SKF-420F"
Center Speaker
"SKC-420C"
Surround Speakers (L / R)
"SKM-420S"
Powered Subwoofer
"SKW-420"
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.

Table of Contents

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Onkyo HTP-420 Specifications

General IconGeneral
BrandOnkyo
ModelHTP-420
CategoryHome Cinema speakers
LanguageEnglish

Summary

HTP-420 Service Manual Overview

5.1-CH Home Theater Speaker Package Introduction

Introduces the HTP-420 speaker system and its main components.

Model Voltage Specifications

Lists voltage requirements for Black and Silver models.

Safety-Related Component Warning

Critical safety notice regarding component replacement and shock hazards.

HTP-420 Product Specifications

Subwoofer and Speaker Specifications

Detailed specifications for powered subwoofer, front, center, and surround speakers.

HTP-420 System Diagrams and Layouts

Exploded Views of Subwoofer and Speakers

Visual breakdown of components for subwoofer and various speaker models.

Powered Subwoofer Block and Schematics

Functional block diagram and detailed circuit schematics for the subwoofer.

Subwoofer PC Board Connections and Layouts

Diagrams showing PC board interconnections and component layouts.

TDA7293 High-Power Amplifier IC

TDA7293 Features, Ratings, and Electrical Specs

Overview, pinout, maximum ratings, and electrical characteristics of the TDA7293.

TDA7293 Application Circuits and Suggestions

Circuit examples, component recommendations, and application guidance for the TDA7293.

TDA7293 Technical Details and Performance

In-depth technical explanation, protections, and performance characteristics of the TDA7293.

TDA7293 Mechanical Data and Packaging

Physical dimensions and packaging information for various TDA7293 package types.

LM124/LM224/LM324/LM2902 Op-Amp ICs

LM Series Op-Amp Description and Schematics

Overview of LM series op-amps, including general description and internal schematic.

LM2902 Ratings, Electrical and Performance Specs

Maximum ratings, electrical characteristics, and performance graphs for the LM2902.

LM Series Application Hints and Circuits

Guidance on implementation and example application circuits for LM series op-amps.

LM Series Op-Amp Physical Dimensions

Various LM Series Package Dimensions

Mechanical dimensions for Ceramic DIP, SOIC, Molded DIP, and TSSOP packages.

LM Series Life Support Policy

Disclaimer regarding the use of LM series components in life support systems.

HTP-420 Parts Lists

Subwoofer, Speaker, and PCB Parts Lists

Comprehensive lists of components for the subwoofer, speakers, and printed circuit boards.

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