Onkyo A-9377

A-9377
SERVICE MANUAL
SERVICE MANUAL
RC-748S
INTEGRATED AMPLIFIER
Black and Silver models
MODEL A-9377(B)/(S)
230 AC, 50Hz
230 AC, 50Hz
B CPP
S CPP
Ref. No. 4140
062009
120/220-240V AC, 50/60Hz
120/220-240V AC, 50/60Hz
B CWT
S CWT
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.

Onkyo A-9377 Specifications

General

Brand	Onkyo
Model	A-9377
Category	Amplifier
Language	English

Summary

ONKYO SERVICE MANUAL

Model Identification

Identifies the specific model and type of audio equipment.

Critical Safety Component Warning

Important safety information regarding critical components and shock hazards.

Exploded View

Component Identification and Placement

Visual layout of parts with reference numbers for assembly and service.

Block Diagram

Amplifier Functional Block Overview

Illustrates the main signal paths and functional units of the amplifier.

Schematic Diagram - Main

Main Circuitry Schematic

Detailed schematic of the amplifier's main electronic components and connections.

Schematic Diagram - Power

Power Supply and AC Input Schematic

Detailed schematic of the amplifier's power supply and AC input sections.

Schematic Diagram - Front

Front Panel and Control Circuit Schematic

Schematic detailing front panel controls, MICOM, and input selection.

Exploded Views Parts List

Component Part Numbers and Descriptions

Lists parts with reference numbers, descriptions, and part numbers for service.

Exploded Views Parts List

Additional Component Details

Exploded Views Parts List

Further Component Listings