Sharp cd k 449 w service manual

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CD-C449W/K449W

SHARP SERVICE MANUAL

No.5887SCDC449W/

CD-C449W
CD-K449W

CD-C449W mini component system consisting of
CD-c449W mini component system and

CP-C449 speaker system.

CD-K449W mini component system consisting of
CD-K449W mini component system and

CP-C449 speaker system.

WEE

DIGITAL AUDIO

- In the interests of user-safety the set should be restored to its
. SRS. the SRS Logo (.)and the scum) RETRIEVAL SYSTEM original condition and only parts identical to those specified be
are registered trademarKs of SRS Labs, Inc. in the United sed-
tates.

/- CONTENTS %

SAFETY PRECAUTION FOR SERVICE MANUAL
SPECIFICATIONS ........
VOLTAGE SELECTION
NAMES OF PARTS
OPERATION MANUAL.
DISASSEMBLY...
REMOVING AND
ADJUSTMENT ......................................
NOTES ON SCHEMATIC DIAGRAM
TYPES OF TRANSISTOR AND LED.
WAVEFORMS OF CD CIRCUIT.
BLOCK DIAGRAM ......................
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD.
TROUBLESHOOTING ......
FUNCTION TABLE OF IC.

FL DISPLAY ......................
REPLACEMENT PARTS LIST/EXPLODED VIEW
\ /
SECTION CD-C449W CD-K449W
KARAOKE CIRCUIT X 0

-
This document has been published to be used

SHARP CORPORATION tor alter sales service only.

The contents are subject to change without notice.

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CD-C449W/K449W
SAFETY PRECAUTION FOR SERVICE MANUAL

WARNINGS
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASSI BUT THE LASER
COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANTTHAT 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 ISTURNED ON WITDOUTA 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.

CAUTION Laser Diode Properties
Material: GaAlAs
Wavelength: 780 nm

BLISS I USE "WU Emission Duration: continuous
APPAHEIL A LASER n: cusse 1

manual: LASER DE cuss l Laser OUIpUt max. 06 mW

OThis Mini Component System is classified as a CLASS
1 LASER product.

0 The CLASS 1 LASER PRODUCT label is located on the
rear cover.

0 Use of controls, adjustments or performance of proce-
dures other than those specified herein may result in
hazardous radiation exposure.

As the laser beam used in this compact disc player is mm...

harmful to the eyes, do not attempt to disassemble the W

cabinet. Refer servicing to qualified personnel only. W

n th NM

mum.
-i-u-i7mm{nmtnsimmimx Hum tummy
m i um: .m R q mm m Mu) mm [\Vlkmlh'nx

VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina nékyméttémélle laserséteilylle. Ali katso sateeseen.
VARNING! Osynlig laserstralning nar denna del ar oppnad och spétrren air urkopplad. Betrakta ej stralen.