Yamaha RX-V650 Service Manual

This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA
Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service
departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and
specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
IMPORTANT NOTICE
100885
SERVICE MANUAL
RX-V750/DSP-AX750/DSP-AX750SE
RX-V650/HTR-5760
AV RECEIVER/AV AMPLIFIER
AMP CHECK / アンプチェック . . . . . . . . . . . . . . . . . . . . 47
DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . 48–49
IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50–60
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 61–62
PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 63–77
PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 78
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 79–88
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89–125
REMOTE CONTROL RAV270, RAV271 . . . . 126–127
REMOTE CONTROL RAV248, RAV249 . . . . . . . . 128
■ CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2
IMPEDANCE SELECTOR . . . . . . . . . . . . . . . . . . . . . . 3
FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5
REMOTE CONTROL PANELS . . . . . . . . . . . . . . . . . . 6
REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–13
SPECIFICATIONS /
参考仕様 . . . . . . . . . . . . . . . . . 14–18
INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DISASSEMBLY PROCEDURES /
分解手順 . . . . . 20–24
SELF DIAGNOSIS FUNCTION (DIAG) /
自己診断機能（ダイアグ） . . . . . . . . . . . . . . . . . . . . 25–46
RX-V750/DSP-AX750/DSP-AX750SE
RX-V650/HTR-5760

Yamaha RX-V650 Specifications

General

Audio Decoding	Dolby Digital, DTS, Dolby Pro Logic II
Tuner	AM/FM
Type	AV Receiver
Channels	7.1
Component Video Inputs	3
Component Video Outputs	1
Digital Audio Outputs	1 Optical
Total Harmonic Distortion	0.06%
Input Sensitivity/Impedance	200 mV/47 k ohms
Signal-to-Noise Ratio	100 dB
Inputs	Analog Audio: 6
Video Inputs	Component: 3
HDMI Inputs	No
Digital Audio Inputs	2 Optical, 2 Coaxial
Frequency Response	10Hz-100kHz (+0/-3dB)
Amplifier Output	95 W/ch (8 ohms, 20 Hz-20 kHz, 0.06% THD)
Video Inputs/Outputs	Composite: 5 in / 2 out

Summary

SERVICE MANUAL

TO SERVICE PERSONNEL

Information and warnings for authorized service personnel regarding product safety and component handling.

IMPEDANCE SELECTOR

Details the impedance selector switch function and warning about its usage.

FRONT PANELS OVERVIEW

Illustrations and identification of controls and indicators on the front panels of various models.

REMOTE CONTROL PANELS

Illustrations of the remote control units (RAV270, RAV271, RAV248, RAV249) and their button layouts.

REAR PANELS OVERVIEW

Diagrams illustrating the connectivity ports and connectors on the rear panels for different models.

TECHNICAL SPECIFICATIONS

Detailed electrical and performance specifications for audio, video, FM, and AM sections.

SET MENU TABLE

Table outlining the structure and options available within the device's setup menu.

PARAMETER VARIABLE RANGE

Details the adjustable range and step values for various DSP parameters across different programs.

INTERNAL VIEW

Visual guide showing internal components and the layout of major printed circuit boards (PCBs).

DISASSEMBLY PROCEDURES

Step-by-step instructions for safely disassembling the unit, including component removal.

SELF DIAGNOSIS FUNCTION (DIAG)

Guide to the built-in diagnostic functions for fault detection, including menu items and operation.

DIAG MENU DETAILS AND TESTS

Explanations and specifications for each item within the diagnostic menu system.

AMP CHECK PROCEDURES

Procedures for checking amplifier idling current and confirming output voltages.

PIN CONNECTION DIAGRAMS

Diagrams showing pin assignments for ICs and grid assignments for controls.

IC DATA

Detailed information, pinouts, and functions for key integrated circuits used in the DSP section.

PRINTED CIRCUIT BOARD LAYOUTS

Foil side views of various PCBs (DSP, FUNCTION, OPERATION, MAIN, SUB TRANS, CONVERSION) with component references.

SEMICONDUCTOR OUTLINE DRAWINGS

Visual representations of ICs, transistors, FETs, diodes, and their pin connections.

SCHEMATIC DIAGRAMS

Detailed circuit diagrams for major functional blocks like DSP, FUNCTION, OPERATION, MAIN, POWER, and CONVERSION.

PARTS LISTS

Comprehensive lists of electrical and mechanical components used in the unit, organized by PCB and type.

REMOTE CONTROL SCHEMATICS

Circuit diagrams for the remote control units, illustrating their internal workings.