Yamaha dvd s840

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I CONTENTS

DVD PLAYER

DVD-S840

SER E MANU

IMPORTANT NOTICE

This manual has been proyided for die use of authorized YAMAHA Retailers and their seryice personnel.
lr 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 resrated.

WARNING:

Failure in follow appropriate seryice and safety procedures when servicing rliis product may result in personal
Injury. destruction of expensive componenrs. and failure ofthe product to perform as specified. For these reasons.
we advise all YAMAHA product owners that any seryice required should be performed by an authorized
YAMAHA Retailer or the appoinred service representaiive.

IMPORTANT: The presentation Or sale of this manual In any individual or firm does not commute authorization. certification or
recognition of any applicable technical capabilities. or establish a pl'lnclpleragem relationship of any form.

The data proyided is belieyed ro be accurate and applicable to the iinitts) indicated on the cover. The research. engmeerlng, and
service departments of YAMAHA are continually srriying to improve YAMAHA products Modifications are. therefore, iiievitable
and specifications are subject to change without notice or obligation Io retrofir. Should any discrepancy appear to exist. please
conract the distributors Seryice Division

WARNING: Static discharges can desImy expensrve components. Discharge any static electricity your body may have
accumulared by grounding yourself to rhe ground buss in the unit (heavy gauge black wires connect in this buss).

IMPORTANT: Turn the unit OFF durIIIg disasseinbly and part replacemenr. Recheck all work before you apply power to the unit.

TO SERVICE PERSONNEL .......................................... 2 SELF-DIAGNOSIS FUNCTION AND SERVICE MODES
PREVENTION OF ELECTRO STATIC DISCHARGE... 3~4 / a Efilfilfifietfi-EXF- l< .................................... 13~29
LOCALE MANAGEMENT INFORMATION ................... 4 ASSEMBLING AND DISASSEMBLING THE MECHANISM

FRONT PANEL .
REAR PANELS.
REMOTE CONTROL PANEL ..
SPECIFICATIONS / $$lߤ .
DISASSEMBLY PROCEDURES AND

SERVICE POSITION / Afiflfitfi-Exdb y a > .. 7~13
OPTICAL PICKUP SELF-DIAGNOSIS AND REPLACEMENT
PROCEDURE / 9667 77' v malfeamcszmla ....... 14~17

0301013

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This Service Manual uses recycled paper.

100850

UNIT/ X fiZTAJZY Imfiflgflfi.

ADJUSTMENT / fig ..................

ABBREVIATIONS / BEER

BLOCK DIAGRAM ............ ..
INTERCONNECTION SCHEMATIC DIAGRAM .......... 54
PRINTED CIRCUIT BOARD .................................. 55~60
SCHEMATIC DIAGRAM .. 61 ~73
VOLTAGE CHART / EEi ........ 74
PARTS LIST ........................................................... 75~85

YAMAHA

YAMAHA CORPORATION

P.O.Box1, Hamamalsu, Japan

OVBS'CIAG

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DVD-S840

DVD-$840

1I TO SERVICE PERSONNEL AC LEAKAGE
WALL EQUIPMENT TESTER OR
Critical Components Information OUTLET UNDER TEST EQUIVALENT
Components having special characteristics are marked A.
and must be replaced with parts having specifications equal
to those originally installed. ® :D-
2. Leakage Current Measurement (For 120V Models Only) J_-

When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.

INSULATING
TABLE

0 Meter impedance should be equivalent to 1500 ohm shunted ' Leakage current must 01 exceed 0.5mA.

by 0.15pF. 0 Be sure to test for leakage with the AC plug in both polarities.

: i CAUTION
v F1001: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.6A, 125V FUSE."

CAUTION
F1001: REPLACE WITH SAME TYPE 1.6A, 125V FUSE.

ATTENTION
F1001: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.6A, 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.

WARNING: Laser Safety

This product contains a laser beam component. This component may emit invisible, as well as visible radiation, which may
cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be used during
servicing of the unit.

1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from
the laser pick-up unit at all times. Do not stare at the laser beam at any time.

2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual.

3) CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.

Laser Emitting conditions:

1) When the Top Cover is removed, and the "STANDBY/ON" SW is turned to the "ON" position, the laser component will
emit a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through
the lens of the laser pick-up unit. Do not attempt any servicing during this period!

If no disc is detected, the laser will stop emitting the beam. When a disc is set, you will not be exposed to any laser
emlSSIOnS.

2) The laser power level can be adjusted with the VR on the pick-up PWB. However, this level has been set by the factory
prior to shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this
manual.

Adjustment of this control can increase the laser emission level from the device.