Yamaha rv 901

Page 1

STEREO RECEIVER

RX-V590IR-V901 I
RX-VSQORDS

SERVICE MANUAL

/ 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 understmd 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 of expensive components. and failure of the
product to perform as specified For these reasons. we advise all YAMAHA product owners
that any service required should he 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
authorization, certification or recognition of any applicable technical capabilities. or
establish a pfinciplevagcnt relationship of any form.

The data provided is believed to be accurate and applicable to the unitts icated on the cover. The research,
engineering, and service departments of YAMAHA are continually stnvrng 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 contact the distributor's Scn'ice Division.

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: Tum the unit OFF during disassembly and part replacement. Recheck all work before you

k apply power to the unit.

I CONTENTS

T0 SERVICE PERSONNEL ..1 TEST/POINT WAVEFORMS ....... ...............14
REMOTE CONTROL PANELS 1 IC DATA ............... ................15~18
FRONT PANELS.............. ..... .2 BLOCK DIAGRAM19~21
REAR PANELS ........ . ....... ......3~4 PRINTED CIRCUIT BOARD. 22~33
INTERNAL VIEW . IC BLOCKS... 34~35
SPECIFICATIONS.......... SCHEMATIC DIAGRAM 36~39
DISASSEMBLY PROCEDURES PARTS LIST ....... ....... ........40~52

SELF CHECK MODE7~9 REMOTE CONTROL TRANSMITTER ....................53~55
TUNER ADJUSTMENTS 10-43

Copyright 2003 YAMAHA CORPORATION YA
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission. amt amamaisu

3.3K-854 n] @Printed in Japan '95.3

Ag:OI?FOR/ftLllgal?1

SGHOGSAXH
/L06A'H/065I\XH

Page 2

RX-V590IR-V901lRX-V590RDS

I TO SERVICE PERSONNEL

1. Critical Components Information. _
Components having special characteristics are marked and AC LEAKAGE
must be replaced with parts having specifications equal to WALL EQUIPMENT TESTER OR
those originally installed. OUTLET UNDER TEST EQUIVALENT

In
D
o:
G
a
LG
?
X
K

2. Leakage Current Measurement (For 120V Models Only). :3
When service has been completed, it is imperative to verify ® -
that all exposed conductive surfaces are properly insulated
from supply circuits.

\
,_
o
oi
?
E
o
m
in
?
X
o:

, . INSULATING
0 Meter impedance should be equivalent to 1500 ohm shunted TABLE
by 0.15pF. .

o Leakage current must not exceed 0.5mA.

0 Be sure to test for leakage with the AC plug in both
polarities.

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 WHAT SO EVER! I

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 nx-vsgo/n-vem v RX-V590/RX-V590RDS
(u, c, A models) (R, B, 6 models)