Yamaha cdx 496

Page 1

COMPACT DISC PLAYER

CDX-396/496

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WARNING:

[he disuibllmr's Service Division.

WARNING:

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I CONTENTS

TO SERVICE PERSONNEL 1-
FRONT PANELS .
REAR PANELS
SPECIFICATIONS .
INTERNAL VIEW .
DISASSEMBLY PROCEDURES ..
STANDARD OPERATION CHART .
TEST MODE ,
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This SerVice Manual uses recycled paper

IMPORTANT NOTICE

This manual has been provided for the use of auihorized YAMAHA Rerailers and their service personnel.
n has been assumed rhai basic service procedures inherani to rhe iiidusrry. and more specifically YAMAHA Producrs, are already
known and undei-srood by ihe users. and have iherefore not been resiared,

Failure ro follow appropi-iaie service and safeiy procedures when servicing ihis produci may resuh in personal
a «a .., injury. desrruciion of expensive componenis and failure of ihe produci ro perform as specified. For rhese reasons.
we advise all YAMAHA pi-oduci owners ihar all service required should be performed by an aurhorized
YAMAHA Rerailer or rhe appoinied service represeniauve.

IMPORTANT: The preseniarioii or sale of ihis manual to any individual or firm does uoi consrinue auihorizaiion. cerrificaiioii or
recognirion of any applicable technical capabiliiies. oi- esrablish a principleageni relaiionship of any form.
The daia provided is believed ro be accurare and applicable ro rhe unius) indicaied on ihe covei. The research. engineering. and
service depai-unenis of YAMAHA are cominually siriving ro improve YAMAHA producis. Modificauons are. iherefore inevuable
and specificaiions are subjeci io change willlom noiice or obligaiion ro reirofii. Should any discrepancy appear io exisi. please coniaci

Siaiic discharges can desiroy expensive componeiiis. Discharge any siaiic eleciriciry your body may have accumu
lared by grounding yourself io ihe ground buss in ihe unu (heavy gauge black wires conneci to ihis buss).

r IMPORTANT: Tum ihe unir OFF during disassemblv and paris i-eplacemeiii. Recheck all work before you apply power io rhe unu.

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DISPLAY DATA 12
IC DATA 13-16
BLOCK DIAGRAM . 17
PRINTED CIRCUIT BOARD. 18-21
WAVEFORMS 23
SCHEMATIC DIAGRAM 24
PARTS LIST 25-37
REMOTE CONTROL TRANSMITTER......................... 38

.YAMAHA

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CDX-396/496

CDX-396/496

I TO SERVICE PERSONNEL

1. Critical Components lnlormation.

Components having special characteristics are marked A WALL EQUPMENT figSEEEARngE
and must be replaced wrth parts havmg specttications equal CUTE-r UNDER TEST EQUlVALENT
to those originally installed.

2. Leakage Current Measurement (For 120V Models Only). @ C
When service has been completed, it is imperative to verify I
that all exposed conductive surfaces are properly Insulated :iNsuL/WNG -:
from supply Circuits. TABLE

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 both
polarities.

CAUTION: USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

THE COMPACT DISC PLAYER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY
QUALIFIED SERVICE PERSONNEL.

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

This set employs a laser. Therefore. be sure to carefully
follow the instructions below when servicing .

1. Laser Diode Properties 2. When checking the laser diode emission. keep your
0 Material : GaAlAs eyes more than 30 cm away from the objective lens.
0 Wavelength : 780 nm
0 Emission Duration : Continuous
0 Laser Output : max. 44.6 pW*

This output is the value measured at a distance of
about 200 mm from the objective lens surface on
the Optical Pick-up Block.

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 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.