Yamaha rx v870 rx v1070

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RXVV1 070/ V870

STEREO RECEIVER

SERV E MANU

/

WARNING:

This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherant to the industry. and more specifically YAMAHA
Products, are already known and understood by the users. and have therefore not been restated.

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 all 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
authorization, certification or recognition of any applicable Iecluiical capabilities. or
establish a principle-agent relationship of any fomi.

IMPORTANT NOTICE \

The data provided is believed to be accurate and applicable to the unit(s) indicated an the cover, The reserch,
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

WARNING:

I CONTENTS

TO SERVICE PERSONNEL
FRONT PANELS ................
REAR PANELS....
SPECIFICATIONS
BLOCK DIAGRAM .
INTERNAL VIEW .
DISASSEMBLV PROCEDURES
PROTECTION FUNCTION .
ADJUSTMENT IN POWER AMPLIFIER SECTION ....10

retrofit. Should any discrepancy appear to exist. please contact the distributors Service Division.

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 parts replacement. Recheck all work before you

k apply power to the unit. /

ADJUSTMENT IN TUNER SECTION .
DIAGNOSTIC OPERATION .' ...........
IC DATA ............
DISPLAY DATA
PRINTED CIRCUIT BOARD
WAVEFORM OF TEST POINT .
SCHEMATIC DIAGRAM
PARTS LIST .
REMOTE CONTROL TRANSMITTER

YA

YAMAHA CORPORATION
P.0.Etox1 .Hamamatsu,Japan

1.8K-8311 IE1] 6) Printed in Japan 93.2

OLSA/OLO IA'XH

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RX-V1070N870

RX-V1070IV870 FIX-V1 070

FIX-V870

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.

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
from supply circuits.

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

o Leakage current must not exceed 0.5mA.

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

AG LEAKAGE
TESTER 0R
EQUIVALENT

WALL EQUIPMENT
OUTLET UNDER TEST
INSULATING
TABLE

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the productionof this product contains LEAD. In addition, other electrical/electronic I
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 FRONT PANELS

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. FIX-V1070

O FIX-V870
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