Sharp cd bk 133

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CD-BK133W

SHARP SERVICE MANUAL

No. SO173CDBK133W

MINI COMPONENT SYSTEM

MODEL CD-BK133W

CD-BK133W Mini Component System consisting of
CD-BK133w (main unit) and CP-BK133 (speaker system).

ll, original condition and only parts identical to those specilied be

MUSE DISC .5...

Elcompncf - In the interests of user-safety the set should be restored to its

CONTENTS

SAFETY PRECAUTION FOR SERVICE MANUAL
SPECIFICATIONS .....
NAMES OF PARTS
OPERATION MANUAL.
VOLTAGE SELECTION
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
DISASSEMBLY ..............................................................

REMOVING AND REINSTALLING THE MAIN PARTS. . 10
ADJUSTMENT ....... . 11
BLOCK DIAGRAM. 13

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD.
VOLTAGE
NOTES ON S
TYPES OF TRANSISTOR AND LED.
WAVEFORMS OF CD CIRCUIT.
TROUBLESHOOTING ......
FUNCTION TABLE OF IC.
FL DISPLAY ......................
REPLACEMENT PARTS LIST/EXPLODED VIEW

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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-BK133W

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 THATTHE 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 WITHOUTA COMPACT DISC IN POSITION AND THE
PICKUP IS ON THE OUTER EDGE THE LASER WILL LIGHT FOR SEVERAL SECONDS TO DETECT A DISC. DO NOT
LOOK INTO THE PICKUP LENS.
2-THE LASER POWER OUTPUT OF THE PICKUP UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY
PRESET BEFORE SHIPMENT.
DO NOT ATTEMPT TO READJUST THE LASER PICKUP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP 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.

Laser Diode Properties
Material: GaAlAs

Wavelength: 780 nm

Emission DuratIon: continuous
Laser Output: max. 0.6 mW

cAIImN-INVISIBLE LASER RADIATION WHEN OPEN

Do NoT STARE INTO BEAM ON VIEW IIIREcTLI wrnt

OPTICAL INSTRIIMENTS.

WARNuNG-UNSICNTBARE LASENSTRANLIING WENN GERAT

GEIJITNET. NICHT IN ME STRANLUNG scNAuEN oDER

DIREKT IIIrI oPTIScNEN NILESIIIITIELN BETFIACHTEN

AT'rENTIoN-RAVON LASER INVISIBLE EN cAs DoquRTIIRE
REGARDER LE FAISCEAU DIRECTEMENT OII AVEc DES

NE PAS
INSTRUMENTS oPTIaLIES.

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.

SPECIFICATIONS
I General I Tuner

Power source

AC 110/127/220/230 - 240 V, 50/60 HZ

Power consumption

80W

Frequency range

FM188 - 108 MHZ
AM1531 - 1,602 kHz

Dimensions Width: 270 mm (10»5/8)
Height: 300 mm (11»4/5)
Depth: 344 mm (13»1/2")
Weighl 6.1 kg (13.4 lbs.)
I Amplifier

Output power

MPO:104 w (52w + 52 W) (10 warm)
HMS: as w (as w + 33 W) (To % TH.D.)

Output terminals

Speakers: 6 ohms
Headphones. 16 - 50 ohms (recommended: 32 ohms)

I CD player

Type

a-disc mulliplay compact disc player

Signal readout

Non-contacl. 3~oeam semiconductor laser pickup

D/A converler

1-bit D/A converter

Frequency response

20 - 20,000 Hz

Dynamic range

90 we (1 kHz)

l Cassette deck

Frequency response

50 - 14 000 Hz (Normal tape)

Signal/noise ratio

55 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/playback)

Wow and flulter

0.3 % (WRMS)

Type Twin»Drive speaker system
To cm (4) lull-range speaker x 2
Maximum input power 66 W
Rated inpuI power as w
Impedance 6 ohms
Dimensions Width: 200 mm (7-9/10")
Height: 300 mm (11-4/5")
Depth: 240 mm (9-2/5)
Weighl 33 kg (7 3 lbs.)/each

prior notice.

Specifications for this model are subject to change without