Yamaha Cdx9 Service Manual

							101016
P.O.Box 1, Hamamatsu, Japan
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 principle-agent 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 the distributors 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.

CONTENTS
TO SERVICE PERSONNEL ...................................... 2–4
PREVENTION OF ELECTROSTATIC DISCHARGE .... 5
FRONT PANELS ............................................................ 6
REAR PANELS .......................................................... 6–8
REMOTE CONTROL PANELS ...................................... 8
SPECIFICATIONS / €ß“7........................................ 9
INTERNAL VIEW ........................................................... 9
REPAIR NOTES / 	.g	Íwy™:.............................. 10
HOW TO MANUALLY EJECT THE TRAY /
	ˆpÄè”›‰XMO........................................... 10DISASSEMBLY PROCEDURES / 
ür		q.......... 11–12
TEST MODE / µÄÞ”Å.................................. 13–14
IC DATA ................................................................. 15–19
BLOCK DIAGRAM ....................................................... 20
WIRING DIAGRAM ...................................................... 21
PRINTED CIRCUIT BOARDS ................................ 22–24
SCHEMATIC DIAGRAMS ...................................... 25–26
REPLACEMENT PARTS LIST .............................. 28–29
REMOTE CONTROL .................................................... 30
 2006                                         All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
CDX-497/CDX-397
 06.07
COMPACT DISC PLAYER
CDX-497/CDX-397 
						

							CDX-497/CDX-397
2
CDX-497/CDX-397

TO SERVICE PERSONNEL
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.
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.
Š;teL^•oM”b‚ow,
XxÁËï¼pËï¼
ÇZ^
•oM‡b{
ÁËï¼txMXmTw	¨UK“‡bUz	.gÌtx
						

							CDX-497/CDX-397
3
CDX-497/CDX-397
WARNING
Laser Diode Properties
Material: GaAlAs
Wavelength: 780 nm
Emission duration: continuous
Laser output: max. 44.6 µW *
* This output is the value measured
at a distance of about 200 mm from
the objective lens surface on the
Optical Pick-up Block.Optical Pick-up
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. 
						

							CDX-497/CDX-397
4
CDX-497/CDX-397 
						

							CDX-497/CDX-397
5
CDX-497/CDX-397

PREVENTION OF ELECTROSTATIC DISCHARGE
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors
and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component
damage caused by electro static discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on
your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist
strap, which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)”
can generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compa-
rable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES divice, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)
sufficient to damage an ES device).
Grounding for electrostatic breakdown prevention
1. Human body grounding.
Use the antistatic wrist strap to discharge the static electricity from your body.
2. Work table grounding.
Put a conductive material (sheet) or steel sheet on the area where the optical pickup is placed and ground the sheet.
Caution:
The static electricity of your clothes will not be grounded through the wrist strap. So take care not to let your clothes touch the
optical pickup.
1M-ohms
Conductive material
(sheet) or steel sheet
Anti-static wrist strap 
						

							CDX-497/CDX-397
6
CDX-497/CDX-397

FRONT PANELS

REAR PANELS
CDX-497 (R model) CDX-497 (R, T, K, A, B, G, J models)
CDX-397 (R, T, A, B, G models)
CDX-497 (T model)
CDX-497 (K model) 
						

							CDX-497/CDX-397
7
CDX-497/CDX-397
CDX-497 (A model)
CDX-497 (B, G models)
CDX-497 (J model)
CDX-397 (R model)
CDX-397 (T model) 
						

							CDX-497/CDX-397
8
CDX-497/CDX-397

REMOTE CONTROL PANELS
CDX-397 (A model)
CDX-397 (B, G models)
CDX-497 (R, T, K, A, B, G, J models) CDX-397 (R, T, A, B, G models) 
						

							CDX-497/CDX-397
9
CDX-497/CDX-397

INTERNAL VIEW
Unit: mm (inch)o
						

							CDX-497/CDX-397
10
CDX-497/CDX-397
None of the components of the following unit can be
supplied separately.
Each unit must be replaced as a whole in case of a failure.
•CD Mechanism
•MAIN P.C.B.
•FRONT P.C.B.