Sharp cd k 1 w service manual

Page 1

CD-K1W,CP-C1W

SHARP SERVICE MANUAL

COMPACT

DIGITAL AUDIO

0 SFtS technology Licensed from SFlS Labs. SRS technol-
ogy holds the following patents: U.S. Patent No.
4,748,669 and U.S. Patent No. 4,841,572.

0 sns, the SRS LogoC.) and the SOUND RETRIEVAL m
are registered trademarks of SRS Labs, Inc. in the United
States.

[][] DOLBY B NR

0 Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.

0 l'DOLBY" and the double-D symbol DU are trademarks
of Dolby Laboratories Licensing Corporation.

SAFETY PRECAUTION FOR SERVICE MANUAL ..
VOLTAGE SELECTION ............................................
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ..
SPECIFICATIONS
NAMES OF PARTS .
DISASSEMBLY....
BLOCK DIAGRAM
SCHEMATIC DIAGR SIDE
TYPES OF TRANSISTOR AND LED...
NOTES ON SCHEMATIC DIAGRAM ..
WAVEFORMS OF CD CIRCUIT .......

P.W.BOAFID ..

FL SEGMENT ............................................................................

PARTS GUIDE/EXPLODED VIEW

SHARP CORPORATION

No. S1802CDK1WII/

CD-K1W
CP-C1W

- In the interests of user-safety the set should be restored to its original
condition and only pans identical to those specified should be used.

The machine CD-K1W/CP-C1W is a modification of CD-CiW/
CP-C1W by providing the Karaoke function. [ts performance
and operation are identical with those of CD-1W/CP-C1W. For
details refex to the service manual (No. SY7920DC1W///) for
CD-C1W/CP-C1W.

CD-CIW/CP-C1W

OPERATION MANUAL ..
REMOVING AND REINS
ADJUSTMENT
TROUBLESHOOTING
FUNCTION TABLE OF lC.

CONTENTS (CD-K1 WICP-C1 W)

........................................................................................... 38

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V Tfiifiocument has been publfihefl to Be used

for after sales service only.

The contents are subject to change without notice.

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CD-K1W,CP-C1W

SAFETY PRECAUTION FOR SERVICE MANUAL

WARNINGS i
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER
COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES
AGAINST EXPOSURE TO THE LASER BEAM.
1-WHEN THE CABINET IS REMOVED, THE POWER IS TURNED ON WITDOUT A COMPACT DISC IN POSITION AND THE
PICK-UP IS ON THE OUTER EDGE THE LASER WILL LIGHT FOR SEVERAL SECONDS TO DETECT A DISC. DO NOT
LOOK INTO THE PICK-UP LENS.
2-THE LASER POWER OUTPUT OF THE PICK-UP UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY
PRE-SET BEFORE SHIPMENT.
DO NOT ATTEMPT TO RE-ADJUST THE LASER PICK-UP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICK-UP LENS AT ANY TIME.
4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE ,
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. ,I

CAUTION Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm

. Emission Duration: continuous > -' , ~
APPAnEIL A LASER IIE GLASS! 1 _ . v
mum um E m I Laser Output. max. 0.6 mW A Q 1

O This Mini Component System Is classified as a CLASS
1 LASER product ~

0 The CLASS 1 LASER PRODUCT I'abel is located on
the rear cover.

CLASS I LASEII FIIGIIIIIIT

0 Use of controls or adjustments or performance of pro-
cedures other than those specified herein may result' In
hazardous radiation ex.posure w : , .

As the laser beam used in this ébrfiplaa dIsc plafir Is Em WW swim
harmful to the eyes, do not attempt to disassemble the " wmmmw

cabinet. Refer servicing to qualified personnel only. Wvfiv"mmfimmmmmxa¥mmm% Em
VAWNLMWERSMLNMNXR Ammmmm
' mflmxmnfllnmmlty MM .
,I ' 3 1 mm. mm
. . , nu msmmgumm WW

f m,

VARO ! Avattaessa' Ia suojalukitus' ohitettaessa olet alttiina nakyméttomalle lasersa'teilylle. Ala' katso sateeseen.
VAFlNING! Osynlig laserstralning néir denna del ar Bppnad och sparren ar urkopplad. Betrakta e} stra'len.

VOLTAGE SELECTION

The voltage selector is located on the AC voltage seléctor'box. If adjustment is necessary, use a screwdriver in order to turn
the selector in either direction until the correct voltage figure is displayed in the window next to the adjustment screw.

QACCAOOOIAWOO

92LPLUG155A 92LPLUG027 I _

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Figure 2 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR