Yamaha htr 5660

Page 1

Av RECEIVER/Av AMPLIFIER
RX-V74UIRX-V740RDS/DSP-AXMU

RX-V640/RX-V640RDS/HTR-5660/DSP-AX64U/DSP-AX64USE

SERVICE MANUAL

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contact the distributor's Service Division.

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I CONTENTS

TO SERVICE PERSONNEL .......................................... 2
IMPEDANCE SELECTOR . ............................................ 2
FRONT PANELS ....................................................... . 3~5
REAR PANELS ........................................................ 6~12
REMOTE CONTROL PANELS .................................... 13
SPECIFICATIONS I seems .. .. 14~17
INTERNAL VIEW ......................................................... 13
DISASSEMBLY PROCEDURES / fitfifllfi ......... 19~22
SELF DIAGNOSIS FUNCTION (DIAG)/

E assesses (5M 7 7) ..................................... 23~44

armr- Ezvzlwbu. .T. :7-7flfimfiifitfim owner.
This Seniice Manual uses recycled paper.

Copyright 2003 YAMAHA CORPORATIONS
This manual is copyrighted by YAMAHA and may not be copied or I]
redistributed either in print or electronically without permissionfl

100847

IMPORTANT NOTICE

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 ofexpensive 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.

IM PORTANT: The presentation or sale ofthis 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

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).
IM PORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.

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AMP ADJUSTMENT / '7"? jfilfilflg ........................... 45
DISPLAY DATA ..

IC DATA ................................................................ . 48~53
BLOCK DIAGRAM ................................................. 54~55
PRINTED CIRCUIT BOARD ................................. . 56~79
PIN CONNECTION DIAGRAM .................................... 80
SCHEMATIC DIAGRAM 81~92
PARTS LIST ......................................................... 93~147
REMOTE CONTROL .......................................... 148~152

YAMAHA

YAMAHA mRPORATlON

ROBOX 1, Hamamalsu, Japan

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RX-V740IRX-V740 RDSI D S P-AX740
RX-V640IRX-V64O RDS/HTR-5660IDSP-AX64OIDSP-AX64OS E

I TO SERVICE PERSONNEL AC LEAKAGE
.. . WALL EQUIPMENT TESTER OR
1. Critical Components Information OUTLET UNDER TEST EQUIVALENT
Components having special characteristics are marked A
and must be replaced with parts having specifications equal
to those originally installed. ® D-
2. Leakage Current Measurement (For 120V Models Only) J_---
When service has been completed, it is imperative to verify __ '
that all exposed conductive surfaces are properly insulated lNSTLfl-ngElNG

from supply circuits.

0 Meter impedance should be equivalent to 1500 ohm shunted ' Leakage current must not exceed 0,5mA.

by 0.15uF. 0 Be sure to test for leakage with the AC plug in both polarities.
CAUTION

'AEBV F701, 702: FOR CONTINLIED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A,125V FUSE."
CAUTION
F701, 702: REPLACE WITH SAME TYPE 8A, 125V FUSE.
ATTENTION

F701, 702: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 8A,125V.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and
possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA-
SON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose
eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.

- DIMENSIONS/ #335.

I IMPEDANCE SELECTOR

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IMPEDANCE SELECTOR A

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WARNING: L: E.

Do not change the IMPEDANCE SELECTOR O (iii-(@003 O O 5 g

switch setting while the power to this unit is 9 I;
on, otherwise this unit may be damaged.

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Unit : mm (inch)

$132: mm (4 y;)