Sharp cd c 1 h service manual

Page 1

CD-C1H/CP-C1H

SHARP SERVICE MANUAL

No. $3817CDC1H/ll

CD-C1 H
CP-C1 H

[flcflgfi @R-o-ssom

DIGITAL AUDIO DU DOLBY 8 NR

0 SRS technology Licensed from SRS Labs. SRS technol» O Dolby noise reduction manufactured under license
ogy holds the following Patonlsi U.S. Palem No. from Dolby Laboratories Licensing Corporation.
4,748,669 and US. Patent No. 4,841,572. . "DOLBY" and the double-D symbol DCI are

0 sns, the SRS Logo(.)and the souun RETRIEVAL svsrem trademarks of Dolby Laboratories Licensing
are registered trademarks of SRS Labs. Inc. in the United Corporation.
Stales- CD-C1H and CP-C1H constitute CD-C1 H.

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

(- CONTENTS

SAFETY PRECAUTION FOR SERVICE MANUAL
SPECIFICATIONS
NAMES OF PARTS ..
OPERATION MANUA .

DISASSEMBLY .............
REMOVING AND REINSTALLING THE MAIN PARTS . 11
ADJUSTMENT... . 12

TEST MODE ......
NOTES ON SCHEMATIC DIAGRAM
TYPE OF TRANSISTOR AND LED ..
BLOCK DIAGRAM ............................
SCHEMATIC DIAGRAM /W|R|NG SIDE OF P.W.BOARD.
WAVEFORMS OF CD CIRCUIT
TROUBLESHOOTING .....
FUNCTION TABLE OF IC
FL SEGMENT
PARTS GUIDE/E

This document has been published to be used

SHARP CORPORATION for after sales service only.

The contents are subject to change without notice.

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CD-C1H/CP-C1H
SAFETY PRECAUTION FOR SERVICE MANUAL

WARNINGS
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 CABINETIS REMOVED, THE POWER IS TURNED ON WITDOUT A COMPACT DISC IN POSITION ANDTHE
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.

O CAUTION
Use 01 controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.

As the laser beam used in this compact disc player
is harmful to the eyes, do not attempt to disassemble
the cabinet. Refer servicing to qualified personnel
only.

[E

Laser Diode Properties
Material: GaAlAs

Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW

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f.

CLASS I LASER PRODUCT
APPAREIL A LASER DE CLASSE I

CAUTIUNVINVISIBLI: LASER RADIA11().\ WHEN 0th DO NOT STAR]: [mo
BEAM 0R wan DIRELTLY rm omen. INSTRUMENT)
\wmmmsmuo LAsustkAinm: NAR DENNA Du. AR ()PPNAD sum
u IN I STRALEN ()CH BEIRAKTA I-_l STKALEN \lED ()PTISKA INSTRUMENT
mvgrmhcusmuu LAsts'nzALLNG vm Ammo SI: rm rm r
STRALENVHLLLER um: MLD OPIISK]: INSTRUMENTER

PRDDUCTD LASER [IE CLASE I

\IARUI AVATI'AESSA ()LET AL'ITILNA NAKYMATUN LASERSATEILYLLE

LASER KLASSE 1 ALA 'l'LlJOTA HATE-SEEN ALAKA KATSK) SITA 0171151er LAITILEN LAPI
\wzxwrmsmuu LAstsmALxINu NAR DENNA ma. AR ()PPNAD
LUOKAN 1 LASERI-AITE STIRKA El IN I srRALEx OCH BETRAKTA u sTRALtN GEMIM ()PTISKI
LNS uni-.m-
KLASS 1 LASERAPPARAT AD SLLrUSYNLIG LASERSIRALLNU NAR DEKSEL APNES STIRRIKKE
. . LVN SI'RA EN ELLER SE DlREKn: MILD ()II'ISKE INSTRUMENTER
LASER TRIDY 1

LASER TRIEDY 1

VARQITUS! LAlTTEEN KAYTTAMINEN MUULLA KUIN
TASSA

KAYTTOOHJEESSA"MAINITULLA TAVALLA SAATTAA
ALTismA KAYHTTAJHAN"TU'BVALLISUUSHLUOKAN 1
YLITTAVALLE NAKYMATTOMALLE LASERSATEILYLLE.

VARNING - OM APPARATEN ANVANDS PA ANNAT SATT
AN I DENNA BRUKSANVISNING SPECIFICERAS. KAN
ANVANDAIREN UTSATTAS FOR OSYNLIG
LASERSTRALNING, SOM OVERSKRIDER GRANSEN FOR
LASERKLASS 1.

VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina nakyméttomalle lasersateilylle. Ala katso sateeseen.
VARNING! Osynlig laserstralning nar denna del 5r oppnad och spérren fir urkopplad. Betrakta ej strélen.