Yamaha rx v495 rds schematic

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AV RECEIVER
RX-V495/RX-V495RDS/

HTR-51 40/ HTR-51 4ORDS

SERVICE MANUAL

IMPORTANT NOTICE

This manual has been provided tor the use of authorized YAMAHA Retailers and their service personnel.
it has been assumed that basic serytce procedures inherent to the industry. and more specifically YAMAHA
Products. are already known and understood by the users. and have theretore not been restated.

WARNING: Failure to tollow appropriate service and safety procedures when semclng this product
may result in personal injury. destruction of expensive coiiiponetits. and failure of the
product to pertorm s specitieil. For these reasons. we adyise all YAMAHA product
owners that any sei-yice required should be performed by art authorized YAMAHA
Retailer or the appointed service representative

IMPORTANT:The presentation or sale of this manual to any iudiyidual or firm does not constitute
authorization. certlflcmlon oi- recogllinon of any applicable technical capabilities.
or establish a pnllclplesagenl relationship of any form

The dam prmlded is believed to be accul'ale and applicable in file fluids) llldlcaled on the cm er. The research.
engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products.
Modificalions are. therefore. inevitable and specificaliolls are subject to change wlihont notice or obligaiioll
[0 retrofit Should any discrepancy appear to exist. please COIIIEICI the distributors Semce DIVISIOH.

WARNING: Static discharges can destroy expensive components. Discharge any static electricity
your body may have accumulated by grounding youi-selfto the ground buss in the unit
(heavy gauge black wit-es connect to this buss).

IMPORTANT: Tum the unit OFF during disassemhly and part replacement, Recheck all work betore
you apply power It) the null,

I CONTENTS

TO SERVICE PERSONNEL 1
REMOTE CONTROL PANELS 1
FRONT PANELS 2
REAR PANELS 3~4
SPECIFICATIONS 5~6
INTERNAL VIEW 7
DISASSEMBLY PROCEDURES 7
SELF DIAGNOSIS FUNCTION B~19
FACTORY PRESET 20

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AMP ADJUSTMENT 21
TUNER ADJUSTMENT 22~25
IC DATA 26~35
DISPLAY DATA 36
BLOCK DIAGRAM . . 37~39
PRINTED CIRCUIT BOARD 40~57
SCHEMATIC DIAGRAM 58~65
PARTS LIST 66~81
REMOTE CONTROL TRANSMITTER 82

.YAMAHA

Y%MAHA CORPORATION
O..Box1 Hamamalsu. Japan

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RX-V495/RX-V495RDS/HTR-5140/HTR-514ORDS

I TO SERVICE PERSONNEL

1. Critical Components information
Components having special characteristics are marked and must be
replaced with parts having specifications equal to those originally

installed AC LEAKAGE
' WALL EQUIPMENT TESTER OR
2. Leakage Current Measurement (For 120V Model only). OUTLET UNDER TEST EQUIVALENT

When service has been completed, it is imperative that you verify that _

all exposed conductive surfaces are properly insulated from supply 1 >- -

circuits. ([1)

- Meter impedance should be equivalent to 1500 ohm shunted by 0.15pF, E J_-

- Leakage current must not exceed 0.5mA.

- Be sure to test for leakage with the AC plug in both polarities. INSfl'fiENG
"CAUTION"
"F804: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,REPLACE ONLY WITH SAME TYPE 8.0A, 250V FUSE."
CAUTION
A 7v F804: REPLACE WITH SAME TYPE 8.0A, 250V FUSE.
ATTENTION

F804: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 8.0A, 250V FUSE.

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.

I REMOTE CONTROL PANELS
V U,C,R,T,A and L models V B and G models

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