Sharp cd k 477 w service manual

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Page 1

CD-K477W

SHARP SERVICE MANUAL

No.58869CDK477W/

CD-K477W

CP-K477, CP-SW477, CENTER(GBOXSOO15AWM2)
and Surround (GBOXSDO1 6AWM2) speaker system
Constibute CD-K477w

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

I lﬁOMPACT
DIGITAL AUDIO

PRO - LOGIC

Manufactured under license from Dolby Laboratories Licens-
ing Corporation.

DOLBY, the double-D symbol DI] and "PRO LOGIC" are
trademarks of Dolby Laboratories Licensing Corporation.

(- CONTENTS -\

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

This document has been published to be used

SHARP CORPORATION tor alter sales service only.

The contents are subject to change without notice.

Page 1

CD-K477W

SHARP SERVICE MANUAL

No.58869CDK477W/

CD-K477W

CP-K477, CP-SW477, CENTER(GBOXSOO15AWM2)
and Surround (GBOXSDO1 6AWM2) speaker system
Constibute CD-K477w

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

I lﬁOMPACT
DIGITAL AUDIO

PRO - LOGIC

Manufactured under license from Dolby Laboratories Licens-
ing Corporation.

DOLBY, the double-D symbol DI] and "PRO LOGIC" are
trademarks of Dolby Laboratories Licensing Corporation.

(- CONTENTS -\

This document has been published to be used

SHARP CORPORATION tor alter sales service only.

The contents are subject to change without notice.

Page 1

CD-K477W

SHARP SERVICE MANUAL

No.58869CDK477W/

CD-K477W

CP-K477, CP-SW477, CENTER(GBOXSOO15AWM2)
and Surround (GBOXSDO1 6AWM2) speaker system
Constibute CD-K477w

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

I lﬁOMPACT
DIGITAL AUDIO

PRO - LOGIC

Manufactured under license from Dolby Laboratories Licens-
ing Corporation.

DOLBY, the double-D symbol DI] and "PRO LOGIC" are
trademarks of Dolby Laboratories Licensing Corporation.

(- CONTENTS -\

This document has been published to be used

SHARP CORPORATION tor alter sales service only.

The contents are subject to change without notice.

Page 2

CD-K477W

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
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

cuss l usu Pnuuunr Wavelength: 78f) nm '
"mm ,1 um ur mm I Emrssnon Duration. continuous
Pnanum um liE ELISE l Laser Output: max. 0.6 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
harmful to the eyes, do not attempt to disassemble the
cabinet. Refer servicing to qualified personnel only.

VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina nakymattomalle lasersateilylle. Ala katso sateeseen.
VARNING! Osynlig laserstralning nar denna del ar oppnad och sparren ar urkopplad. Betrakta ej stralen.

VOLTAGE SELECTION

The voltage selector is located on the AC voltage selector 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.

QACCA0001AW00 QACCJ0003AWOO

- :%<

QACCEOOOSAWOO QACCLOOOSAWOO

.jﬁlEE. .WEES

Figure 2 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

-2-

Page 2

CD-K477W

SAFETY PRECAUTION FOR SERVICE MANUAL

CAUTION Laser Diode Properties

Material: GaAlAs

cuss l usu Pnuuunr Wavelength: 78f) nm '
"mm ,1 um ur mm I Emrssnon Duration. continuous
Pnanum um liE ELISE l Laser Output: max. 0.6 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
harmful to the eyes, do not attempt to disassemble the
cabinet. Refer servicing to qualified personnel only.

VOLTAGE SELECTION

QACCA0001AW00 QACCJ0003AWOO

- :%<

QACCEOOOSAWOO QACCLOOOSAWOO

.jﬁlEE. .WEES

Figure 2 AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

-2-