Yamaha ysp 900

Page 1

DIGITAL SOUND PROJECTOR

YS P-900

ER ICE M NU

When transporting this unit, be sure to use the units packing materials and box so as to protect
it against any damage, in particular, dents in the front grille during transportation.

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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 principleeagent relationship of any fonu.

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 the distributor's 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: 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
FRONT PANEL .. 3
REAR PANELS .. a
BOTTOM PANEL .. .. 4
REMOTE CONTROL PANELS .. 4
SPECIFICATIONS I 3.3%tifi. .. 5
INTERNAL VIEW ............................. .. 5
SETMENUTABLEIty 21-. s
SERVICE PRECAUTIONS / u-Exfleoiiae$ffi 7
DISASSEMBLY PROCEDURES / fifléflfi ........... 7-12
UPDATING FIRMWARE /

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This Service Manual uses recycled paper.

o 2005 YAMAHA CORPORATION Ail rights reserved.
This manual is copyrighted by VAMAHA and may not be copied or
redistributed either in print oreieclronicaiiy Without permission.

SELF DIAGNOSIS FUNCTION (DIAG) /

e E??E9i%§é (9'4 77") . 24-40

DISPLAY DATA 41
IC DATA ........... 42-43
BLOCK DIAGRAM .............. 44
PRINTED CIRCUIT BOARDS 45-53
PIN CONNECTION DIAGRAM . .. 54
SCHEMATIC DIAGRAMS 55-60
REPLACEMENT PARTS LIST. 61-77
REMOTE CONTROL .............................................. 78-79
ADJUSTING SYSTEM PARAMETERS/

WExzn-EEQETS ........................................ 80-82

YAMAHA

YAMAHA CORPORATION

P.O.Box 1. Hamamatsu, Japan
8 06.08

OOG'dSA

Page 2

YSP-900

YSP-900

I TO SERVICE PERSONNEL

1. Critical Components Information
Components having special characteristics are marked f
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 ohms shunted
by 0.15pF.

CAUTION

AC LEAKAGE
WALL EQUIPMENT TESTER OR
OUTLET UNDER TEST EQUIVALENT

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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 F501: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE.

CAUTION

F501: REPLACE WITH SAME TYPE 4A, 125V FUSE.

ATTENTION

F501: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 4A,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 / fifiB/\>§IZOL\T

All of the P.C.B.s installed in this unit are soldered using
the lead free solder.

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:
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.

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