Onkyo DR-645(S)/(B) User Manual

DR-645
SERVICE MANUAL
SERVICE MANUAL
RC-798S
DVD RECEIVER
Silver and Black models
MODEL DR-645(S)/(B)
Ref. No. 4249
092010
220-240V AC, 50/60Hz
220-240V AC, 50/60Hz
220-240V AC, 50/60Hz
220-240V AC, 50/60Hz
S CMP2P
B CMP2P
S CMQ3P
S CMR6P
There is no repair part available.
Please replace the complete product
or use a new product to secure repair parts.
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 DR-645(S)/(B) Specifications

General

Brand	Onkyo
Model	DR-645(S)/(B)
Category	Receiver
Language	English

Summary

Service Manual Introduction and Parts Information

Safety-Related Component Warning

Critical components identified by mark require specific replacement procedures for safety.

General Safety and Handling Precautions

Common Maintenance and Controlling

General guidelines for safe operation and part handling during maintenance.

Electrostatic Sensitivity (ES) Handling

Procedures to prevent damage to sensitive electronic components from static charges.

Common Soldering Rules and Techniques

Guidelines for safe and effective soldering, including temperature and material specifications.

IC Handling and Replacement

Instructions for discharging and changing integrated circuits safely.

Advanced Safety and Component Handling

Soldering Best Practices

Specific advice on soldering small parts, speed, and board cleaning.

Transistor Handling and Replacement

CD Part and Laser Head Safety

Precautions for checking CD parts and safely discharging the laser head.

Detailed CD Playability Checks and Cleaning

CD Disc Compatibility and Test Tracks

Liquid Lens Cleaning Procedure

Provides instructions for cleaning the CD player lens using a special solvent.

Electrical Specifications

FM Tuner Section Specifications

Detailed technical specifications for the FM tuner performance.

DVD Section Specifications

Technical parameters for the DVD playback section.

Electrical Specifications (Continued)

Line Output Specifications

Auxiliary Section Specifications

System Block Diagram

Main Components and Interconnections

Illustrates the major functional blocks and their signal paths within the device.

System Wiring Diagram

Board-to-Board and Component Wiring

Shows the electrical connections between different boards and major components.

Decoder Board Circuit Diagram (Part 1)

Power Supply and Control Circuitry

Decoder Board Circuit Diagram (Part 2)

Motor Control and Signal Processing

Decoder Board Circuit Diagram (Part 3)

Main Chipset and Memory Interfaces

Circuitry for the main processing chipset and associated memory interfaces.

Decoder Board Circuit Diagram (Part 4)

Flash Memory and Interface Connections

Decoder Board Circuit Diagram (Part 5)

HDMI and Control Signal Routing

Decoder Board Circuit Diagram (Part 6)

Video Output and Audio Interfaces

Decoder Board Circuit Diagram (Part 7)

Miscellaneous Decoder Board Circuits

Decoder Board Layout Diagram

Decoder Board Component Placement

Exploded View and Parts List

Exploded Assembly Diagram

A visual breakdown of the unit's components for assembly reference.

Component Parts Identification

A list identifying various parts by number and description.