Onkyo A-8700 Service Manual

ONKYO® SERVICE MANUAL
Integrated Stereo Amplifier
MODEL A-8700
UD 120V AC, 60Hz
UG
220V AC , 50Hz
UQ 240V AC, 50Hz
uw 120V/220V AC, 50Hz/60Hz
A-8700
SERIAL No.3340
SAFETY-RELATED COMPONENT WARNING!!
TABLE OF CONTENTS
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 PARTS NUMBERS APPEAR AS SHOWN IN THIS
MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE MEA-
SUREMENTS TO DETERMINE THAT EXPOSED PARTS
ARE ACCEPTABLY INSULATED FROM THE SUPPLY
CIRCUIT BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.
Specifications
Precautions
Block diagram
IC block diagram
Front panel facilities
Adjustment procedures
Chassis exploded view
Printed circuit board parts list
Parts list of packing
System connections
Printed circuit board view
Schematic diagram
ONKYO
AUDIO COMPONENTS
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Onkyo A-8700 Specifications

General

Brand	Onkyo
Model	A-8700
Category	Amplifier
Language	English

Summary

Safety-Related Component Warning

Specifications

Precautions

Replacing the Fuses

Guidance on replacing fuses to maintain protection against fire and shock.

Insulation Resistance Measurement

Procedure for measuring insulation resistance, particularly for U.S.A. models.

Voltage Selector

Instructions for setting the voltage selector to match local power supplies.

Block Diagram

IC Block Diagram

Front Panel Facilities

Front Panel Power and Volume Controls

Details on the power switch, servo operation indicator, and volume control.

Front Panel Input and Speaker Controls

Information on input selectors, speaker selectors, and headphone jacks.

Front Panel Tone and Balance Controls

Description of bass, treble, and balance controls on the front panel.

Front Panel Switches and Indicators

Overview of muting, mode, source direct, and recording selectors.

Schematic Diagram

Adjustment Procedures

Preparations for Adjustment

Setup guidelines for performing adjustments and checks.

Idling Current Adjustment

Procedure for adjusting the idling current for optimal performance.

Protection Circuitry Operation Check

Tests to verify the correct operation of the protection circuitry.

Chassis Exploded View

Chassis Exploded View Parts List

Printed Circuit Board Parts List

Main Circuit Board Parts

List of ICs, transistors, diodes, capacitors, and resistors for the main board.

Equalizer Circuit Board Parts

Component list for the equalizer circuit board.

Parts List of Packing

System Connections