Yamaha cdx 1050

Page 1

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COMPACT DISC PLAYER

CDX-1050

. SERVICE MAN U

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/ IMPORTANT NOTICE \

This mam! Itu been provided far (he use of Authorized YAMAHA Ruailun and their service parsmnd.
1! his been nsumed that basic service procedures inhcnnl In the industry, Ind more specifically YAMAHA
Produm. are uhudy known md undasmod by Di: rum. 1nd have therdore not been restated.

WARNING: Faiiurv no follow lppmprille sci-Vic: md safety procedures when waiving this produm
may rtsuIt in personal injury, dalmatian of expensive mmpmicms and failure of the
produci to perform as specifind. Fur these reasons. w: advise all YAMAHA product awncrs
that all mice requimd IhouId be petfmmed by tn lmhurized YAMAHA Retailer or III:
appointed service rqaresmutivr.

IMPORTANT: Tim presenuiion or sale of this manull w my individual or firm does no! comtimle
nuthurizalim, certification a: recognition nf any applicable technical capabflidcs, or
establish a principledgenl relatiunship of my form.

The dam provided is believad to ba curate Ind IppIiclble to the tmil(s) indicated on the caver. The. march.

engineering, and service dcpanmmts of YAMAHA m, mummy suiving m Improve YAMAHA products.
Modificuiom are, therefore, inevimblc m1 specifiuiims m subject to clung: without notice or obligation Io

mmfix. Shouid my discrepancy appear we exist. please contIc! \he distribmm's Service Division

WARNING: Smic discharges can destroy cxpmsive component. Discharge my static eIectriciKy your
body may have accumukwd by grounding yourself in the gmund bus: in the unit (heavy
gauge black wires connect to this burs),

IMPORTANT: Tum m: uni: OFF during disusembly Ind pans mplaccmem. Recheck all work before you

-77 apply puwcr to the unit.

I CONTENTS

TO SERVICE PERSONNEL
REAR PANELS
INTERLOCK OPERATION ..
SPECIFICATIONS ............
INTERNAL VIEW....
BLOCK DIAGRAM .
DISASSEMBLY PROCEDURES
ADJUSTMENTS .........................
TEST MODE ............................................................ 15~17

109368

ERROR MESSAGE ............................
INTERCONNECT WIRING DIAGRAM .
PRINTED CIRCUIT BOARD .
IC DATA .............................
IC BLOCK ......................
SCHEMATIC DIAGRAM
DISPLAY DATA
PARTS LIST ......
REMOTE CONTROL TRANSMITTER..

YAMAHA

YAMAHA CORPORATION
0.80M Hamamaisu Japan

31K x2! I367 Printed m Japan a; I

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CD X- 1 050

I TO SERVICE PERSONNEL

1.

Critical Components Information.

AC LEAKAGE
Components having special characteristics are marked and WALL EQUIPMENT TESTER OR
must be replaced with parts having specifications equal to OUTLET UNDER TEST EQUIVALENT
those originally installed. Q) B

2. Leakage Current Measurement (For 120V Models Only).

When service has been completed, it is imperative to verily _L-
that all exposed conductive surfaces are properly insulated -=
from supply circuits. %%li%ATING

Meter impedance should be equivalent to 1500 ohm shunted
by D.15|J.F.

Leakage current must not exceed 0.5mA.

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

POLARIZATION (U, C models)

This CD player product is equipped with a polarized alternat»
ing-current line plug (a plug having one blade wider than the
other). This plug will fit into the power outlet only one way.
This is a safety feature.

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.

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 YOLIR
MOUTH FOR ANY REASON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale sol-
der 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.