Yamaha dsp ax1500

Page 1

AV RECEIVER/AV AMPLIFIER

RX-V1500/DSP-AX1500

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 understood 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 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 technical capabilities, or establish a principleragenl relationship of any form.

The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, 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 retrofit. Should any discrepancy appear to exist. please

Contact lhe dislfibulors Service 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 apply power to the unit.

I CONTENTS

TO SERVICE PERSONNEL 2
FRONT PANELS. 3~4
REAR PANELS . 4~7
REMOTE CONTROL 7

SPECIFICATIONS.................................................... 8~11
INTERNAL VIEW 12
DISASSEMBLV PROCEDURES Ifififllfi 13~16
UPDATING FIRMWARE /

7 7' -.L\"J I 70%fifl3} 17~18
SELF DIAGNOSIS FUNCTION (DIAG) /

aaeameee (€477) ..................................... 19~43

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This Service Manual uses recycled paper.

AMP ADJUSTMENT / 7 PTEIEEIE 44~45
DISPLAY DATA 46~47
IC DATA 48~57
BLOCK DIAGRAM 58~59
PRINTED CIRCUIT BOARD 60~74
PIN CONNECTION DIAGRAM 75~76
SCHEMATIC DIAGRAM 77~85
PARTS LIST 87~123
REMOTE CONTROL 124~125

YAMAHA

YAMAHA CORPORATION

P.O.Box 1, Hamamalsu. Japan
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I TO SERVICE PERSONNEL

C.ritical Components Information

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

2. Leakage Current Measurement (For 120V Models Only)
When sen/ice 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 0.15m:

CAUTION

AC LEAKAGE
WALL EQUIPMENT TESTER OR
OUTLET UNDER TEST EQUIVALENT

@ID-

J;-

INSULATING
TABLE
0 Leakage current must not exceed 0.5mA.

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

E9 F1, F2: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 10A,

125V FUSE."
CAUTION

F1, F2: REPLACE WITH SAME TYPE1OA, 125V FUSE.

ATTENTION

F1, F2: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE1OA, 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 REA-

SON 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 / "flan/Si ICOL\C

The P.C.Bs installed in this unit are soldered using the
following solder.

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Side A Side B A E B E
DSP P.C.B. Lead Solder Lead Free Solder DSP P.C.B. fiuA U I\ / 51 étléiuA y 51
FUNCTION P.C.B. Lead Solder Lead Free Solder FUNCTION P.C.B. fiul U /\ / 5" £339 / 57
OPERATION P.C.B. - Lead Free Solder OPERATION P.C.B. 7 $3339 / 57
MAIN P.C.B. - Lead Free Solder MAIN P.C.B. * fifinfl / 57
POWER PC.B. - Lead Free Solder POWER PC.B. 7 $3339 / 57
VIDEO P.C.B. - Lead Free Solder VIDEO P.C.B. * fifinfl / 57
CONVERSION P.C.B. Lead Solder Lead Free SoIder CONVERSION P.C.B. fidl I) l\ / 57 132% / 27

Solder Dip

SMT

M.

Among some types of lead free solder currently available,

it is recommended to use one of the following types for the

repair work.
- Sn + Ag + Cu (tin + silver + copper)
- Sn + Cu (tin + copper)
- Sn + Zn + Bi (tin + zinc + bismuth)

Caution:

1. As the melting point temperature of the lead free solder
is about 30°C to 40°C (50°F to 70°F) higher than that of
the lead solder, be sure to use a soldering iron suitable
to each solder.

REFLOW

Process

FLOW Process

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- Sn+Ag+Cu(§5+§E+$I§D

- Sn+Cu($5+$|EI)

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