Yamaha rx v650

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AV RECEIVER/AV AMPLIFIER

RX-V750/DSP-AX750/DSP-AX75OSE
RX-V650/HTR-5760

SERVICE MAN UAL

IMPORTANT NOTICE

This manual has been provided for me use of authorized YAMAHA Retailers and IIlell semce personnel.
lr has been assumed rhar basic service procedures mherenr ro lhe lndllslry, and more specifically YAMAHA Products
known and IlndCIHnOd by the users. and have rllerefore nor been reslaied.

are already

WARNING: Fallllre ro follow appropnare ser\ ice and eatery procedures when serviclng [Ills product may resull in personal
injury. deorruciion of expeume componems. and failure of [he producr ro perform as specified. For these reasons.
we lldl'lse all YAMAHA producr owners rhar any selVlce required should be performed by an aurhorized YAMAHA
Relailer or lhe appolnled service represenllllne.

IMPORTANT: The presemnllon or sale of lllis manual ro any inleldllnI or firm does nor consuuue aurhonzarion certificanon or
recognirion of any applicable rechmcal capabllnlee. or esmblish a princrpleagenr relationship ofany form.

UEWI

The dara pmVlded is believed ro be accurule and applicable In rhe uniuo unlicmed on lhe cover The .eurch, engineering and selylce
depallmenls of YAMAHA are conuuually snivmg ro improve YAMAHA producrs. Modifications are. drerefore. illevnable and
specifications are Subject Io change without notice or oblrgallon [0 reu'ofn. Should any dI>CreplmCy appear in exrsl. please corllncl lhe
dislrlbllmre Service DlVlsloll

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2
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5
5-2
32
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5

WARNING: Sranc discharges can destroy expensive componenls. Discharge uny slalic electricily your body may have
acclnnululed by grounding yourself ro lhe ground buss ll] llle nnll (heavy gauge black WIICS connecl in ring buss).

IMPORTANT: Tum rhe umr OFF during dlsassembly and pair replacemenr. Reclreck all work before you apply power lo rhe unil,

\7 ,/"

I CONTENTS

TO SERVICE PERSONNEL AMP CHECKI 7777-1 17 .....

IMPEDANCE SELECTOR . . . . DISPLAY DATA . .. . . 48-49
FRONT PANELS .. .. .. .. IC DATA . . .. .. . .. 50-60
REMOTE CONTROL PANELS . . . . . BLOCK DIAGRAM .. . . . .. . . 61-62
REAR PANELS ........................... 7-13 PRINTED CIRCUIT BOARD ................ 63-77
SPECIFICATIONS I fifilfli ................. 14-18 PIN CONNECTION DIAGRAM ................. 78
INTERNAL VIEW ............................ 19 SCHEMATIC DIAGRAM ................... 79-86
DISASSEMBLY PROCEDURES / fififi¥lll§ ..... 20-24 PARTS LIST ............................ 89-125
SELF DIAGNOSIS FUNCTION (DIAG) I REMOTE CONTROL RAV270, RAV271 . . . . 126-127
EEEéEfiIfifié (@477) .................... 25-46 REMOTE CONTROL RAV248, RAV249 ........ 128

:Vri- 5X7217lwlc Ij v-aaiwfiiifiéfifi (fruit.
This Service Manual uses recycled paper.

fiYAMAHA

YAMAHA CORPORATION
PO Box 1 Hamamatsu,Japan

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RX-V750/DSP-AX750/DSP-AX7SOSE
RX-VGSO/HTR-5760

I TO SERVICE PERSONNEL

. . . AC LEAKAGE
1. Critical Components Information WALL EQUIPMENT TESTER OR
Components having special characteristics are marked A OUTLET UNDER TEST EQUIVALENT
and must be replaced with parts having specifications equal
to those originally installed. ® :37
2. Leakage Current Measurement (For 120V Models Only) ,
When service has been completed, it is imperative to verify : :
that all exposed conductive surfaces are properly insulated INSULATING
from supply circuits. TABLE
0 Meter impedance should be equivalent to 1500 ohm shunted o Leakage current must not exceed 0.5mA.
by OJSHF' 0 Be sure to test tor leakage with the AC plug in both
polarities.
CAUTION
F1, F2: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE10A, 125V FUSE."
CAUTION
F1, F2 : REPLACE WITH SAME TYPE 10A, 125V FUSE.
ATTENTION

F1, F2 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE10A, 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 REASON 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.

About Lead Free Solder I fi§£/\/7IEDLT

The P.C.B.s installed in this unit are soldered using the fol- $1§l2¥§§2§hfwé§fii03AVfifihliifiilfiéhfbé
lowing solder. NVfiOiTEEXDiE 7) T6731)
ComponentSide/Eflfiufi Foil Side/IV/Gffi
DSP P.C.B. Lead Solder/filJUJIV/Gf Lead Free Solder/#RSQIV/Q
FUNCTION P.C.B. - Lead Free SOICIEEI'Ifiafl/V/y~
OPERATION P.C.B. - Lead Free SOIdeF/%%I\7§
MAIN P.C.B. - Lead Free Solder/#IEfiGIV/Gl
POWER P.C.B. - Lead Free SDIdeF/flfiG/\Vj
SUB TRANS PtC.B. - Lead Free SDIdeF/flfiG/\Vj
CONVERSION P.C.B. Lead Soltierl§I:I}U)/\/5f Lead Free Solder/fifiGlV/fi
Among some types of lead free solder currently available, it fififimyfilzlib < OhOEifibE/B V) 333*?)2 Iélfllfilzli
is recommended to use one of the following types for the T3303: 5 mes/xyaomaetefi Liéo
repair work. - Sn+A g+Cu ($55 +§E +flfil)
- Sn + Ag + Cu (tin + silver + copper) SMC (92' +973)
- Sn + Cu (tin + copper) ' Sn+Zn+Bi (fig +§E$Q + EX'VX)

- Sn + Zn + Bi (tin + zinc + bismuth)