Yamaha RX-V673 Service Manual

Note:
When the DIGITAL P.C.B. or IC82 on DIGITAL P.C.B. is replaced, this unit will display "Internal Error"
and will not operate at all without additional setting.
In such a case, report the serial number of this unit to the following e-mail address.
Yamaha Corporation will reply providing the setting procedure to make this unit operate properly.
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 specifi cally YAMAHA Products, are already known
and understood by the users, and have therefore not been restated.
WARNING:
IMPORTANT:
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
specifi cations are subject to change without notice or obligation to retrofi t. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING:
IMPORTANT:
■ CONTENTS
To Service Personnel ............................................2
Front Panels .........................................................3–4
Rear Panels ...........................................................5–8
Remote Control Panel ..........................................9
Specifications ................................................... 10–15
Internal View .................................................... 16–17
Service Precautions ............................................ 17
Disassembly Procedures ............................. 18–23
Updating Firmware ..........................................24–25
Self-Diagnostic Function ............................26–64
POWER AMPLIFIER ADJUSTMENT ............................65
1 0 1 2 3 7
RX-V673/HTR-6065/
E-mail: ycav-ysiss@gmx.yamaha.com
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 specifi ed. 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.
The presentation or sale of this manual to any individual or fi rm does not constitute authorization, certifi cation or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
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).
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
Copyright © 2012
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
AV RECEIVER
RX-A720
SERVICE MANUAL
IMPORTANT NOTICE
DISPLAY DATA .......................................................66–69
IC DATA ...................................................................70–89
PIN CONNECTION DIAGRAMS .............................90–91
BLOCK DIAGRAMS ................................................92–95
PRINTED CIRCUIT BOARDS ............................... 96–128
SCHEMATIC DIAGRAMS ................................... 129–148
REPLACEMENT PARTS LIST ............................ 149–171
REMOTE CONTROL ........................................... 172–174
ADVANCED SETUP ............................................ 175–176
FIRMWARE UPDATING PROCEDURE .............. 177–188
All rights reserved.
P.O.Box 1, Hamamatsu, Japan
'12.05