Yamaha dsp ax757

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AV RECEIVER/AV AMPLIFIER

RX-V757/DSP-AX757/DSP-AX757SE
RX-V657/HTR-5860

SERVICE MAN UAL

l IMPORTANT NOTICE

This tnanual has been pmylded for the use of authorized YAMAHA Retailers and their service personnel.
II has been assumed that basic service procedures inherent to the Illduslly, and more specifically YAMAHA Products. are already
known and understood by the users. and have therefore not been restated.

WARNING: Failure to follow appropriate seryice and satety procedures when Serwcmg this product tuay result tn personal
injury. destruction of expensive components. and failure of the product to perform as specified. For these reasons.
we advtse 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 authortzation, certification or
recognition of any applicable technical capabilities. or establish a principleoagem relationship of any form.

The data provided is believed to be accurate and applicable to the fluids) indicated on the cover. The research, engineering, and service
departments of YAMAHA are continually striving Io ituproye YAMAHA products. Modifications are. therefore inevitable and
specificalmm are subyect to change without notice or obligalion to retrofit. Should any discrepancy appear to exist. please contact the
distributors Servrce Division.

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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.
\ .

I CONTENTS

TO SERVICE PERSONNEL .................. 2-3 DISPLAY DATA .......................... 51-52
FRONT PANELS ........................... 3-5 C DATA ................................ 53-61
REMOTE CONTROL PANELS .................. 6 PIN CONNECTION DIAGRAM ................. 62
REAR PANELS ........................... 7-12 BLOCK DIAGRAM ........................ 63-84-I
SPECIFICATIONS / D D [I [| ................. 13-17 PRINTED CIRCUIT BOARD ................ 65-84
NTERNAL VIEW ................... . . .. 18 SCHEMATIC DIAGRAM . . . . .. . 85-95
DISASSEMBLY PROCEDURES / [I D D [I ..... 19-27 PARTS LIST ............................ 97-133
SELF DIAGNOSIS FUNCTION (DIAG) / REMOTE CONTROL RAV272, RAV273 . . . . 134-135

D [I D [I D [I [I D [| D [I .................... 28-49 REMOTE CONTROL RAV252, RAV253 . . . . 136-137
AMP ADJUSTMENT / [I [| D D [I [I ............... 50

:ma- E27:17Mx. I: 7-oaemeixfizfifi bruit.
This Servlce Manual uses recycled paper.
Copyright 2005 YAMAHA CORPORATION

This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission. YAMAHA CORPORATION
POBox i. Hamamaisu. Japan

M 05.03

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RX-V757/DSP-AX757/DS P-AX757SE
RX-V657/HTR-5860

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. ® :3-
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 ohms shunted 0 Leakage current must 0t exceed 0.5mA.
.15 F.
by 0 I1 0 Be sure to test for leakage with the AC plug in both
polarities.
CAUTION
Ea F1, F2 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 10A, 125V FUSE."
A v
T CAUTION
F1, F2 : REPLACE WITH SAME TYPE 10A, 125V FUSE.
ATTENTION

F1, F2 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 10A, 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/D D I] D D I] D D I]

The P.C.Bs installed in this unit are soldered using the fol- D D I] D I] I] I] I] D D I] D I] D I] I] [I l] I] [I I] I] I] I] [I l]
lowingsolder. DDDDDUDDDDDD
SlDEA/AI] SlDEB/BD

DSP P.C.B. Lead Solder/D D I] I] [I D Lead Free Solder/D I] [I D D
FUNCTION P.C.B. - Lead Free Solder/D I] [I D D
OPERATION P.C.B. - Lead Free Solder/D I] [I D D
MAIN P.C.B. - Lead Free Solder/D I] [I D D
POWER P.C.B. - Lead Free Solder/D I] [I D D
SUBTRANS P.C.B. - Lead Free Solder/D I] [I D D
CONVERSION P.C.B. Lead Solder/D D I] I] [I D Lead Free Solder/D I] [I D D
XM P.C.B. Lead Solder/D D I] I] [I D Lead Free Solder/D I] [I D D

SMT REFLOW Process

Side B

MI FLOW Process