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Page

SAFETY PRECAUTION FOR SERVICE MANUAL ..........................................................................................................  2

 IMPORTANT SERVICE NOTES (FOR U.K. ONLY) .........................................................................................................  2

SPECIFICATIONS ............................................................................................................................................................  3
NAMES OF PARTS ..........................................................................................................................................................  4
OPERATION MANUAL .....................................................................................................................................................  6
DISASSEMBLY .................................................................................................................................................................  8
REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................  10
ADJUSTMENT ................................................................................................................................................................  12
RDS ................................................................................................................................................................................  13
TEST MODE ...................................................................................................................................................................  14
ERROR LIST ..................................................................................................................................................................  20
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................  21

 TYPE OF TRANSISTOR AND LED ................................................................................................................................  21

BLOCK DIAGRAM ..........................................................................................................................................................  22

 SCHEMATIC DIAGRAM .................................................................................................................................................  26
 WIRING SIDE OF P.W.BOARD ......................................................................................................................................  32
 WAVEFORMS OF CD CIRCUIT .....................................................................................................................................  36
 TROUBLESHOOTING ....................................................................................................................................................  37

FUNCTION TABLE OF IC ..............................................................................................................................................  43

 LCD SEGMENT ..............................................................................................................................................................  52

PARTS GUIDE/EXPLODED VIEW

 PACKING METHOD (FOR U.K. ONLY)

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

condition and only parts identical to those specified should be used.

 

Recording and playback of any material may require consent,
which SHARP is unable to give. Please refer particularly to the
provisions of Copyright Act 1956, the Dramatic and Musical
Performers Protection Act 1956, the Performers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.

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Precaution to be taken when replacing and servicing the
Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output
for this model is specified to be lower than Class I Requirements.
However, the following precautions must be observed during
servicing to protect your eyes against exposure to the Laser
beam
(1) When the cabinet has been removed, the power is turned

on without a compact disc, and the Pickup is on a position
outer than the lead-in position, 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 inside the unit and

replacement service parts have already been adjusted prior
to shipping.

(3) No adjustment to the Laser Power should be attempted

when replacing or servicing the Pickup.

(4) Under no circumstances look directly into the Pickup Lens

at any time.

(5) CAUTION - Use of controls or adjustments, or performance

of procedures other than those specified herein may result
in hazardous radiation exposure.

Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.

Set name

set value

Withstanding Voltage Tester

Test voltage

4,240 VPEAK
3,000 VRMS

Set time

6 secs

Set current(Cutoff current)

4 mA

Unit

Judgment

OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzor sounds.

PROBE

AC

OUT

UNIT

SHORT-CIRCUT
AC POWER
SUPPLY CORD

CONNECT THE PROBE
TO GND OF CHASSIS
SCREW TERMINAL

WITHSTANDING

VOLTAGE TESTER

CAUTION
Use of controls, adjustments or performance of pro-
cedures other than those specified herein may re-
sult in hazardous radiation exposure.

As the laser beam used in this compact disc player
is harmful to the eyes, do not attempt to disassem-
ble the cabinet. Refer servicing to qualified person-
nel only.

CAUTION-INVISIBLE  LASER  RADIATION  WHEN  OPEN.  DO  NOT  STARE  INTO 
BEAM  OR  VIEW  DIRECTLY  WITH  OPTICAL  INSTRUMENTS.

VARNING-OSYNLIG  LASERSTRALNING  NAR  DENNA  DEL  AR  OPPNAD.  STIRRA
EJ  IN  I  STRALEN  OCH  BETRAKTA  EJ  STRALEN   MED  OPTISKA  INSTRUMENT.

ADVERSEL-USYNLIG  LASERSTRALING  VED  ABNING.  SE  IKKE  IND  I 
STRALEN-HELLER  IKKE  MED  OPTISKE  INSTRUMENTER.

VARO!  AVATTAESSA  OLET  ALTTIINA  NAKYMATON  LASERSATEILYLLE.
ALA  TUIJOTA  SATEESEEN  ALAKA  KATSO  SITA  OPTISEN  LAITTEEN  LAPI.

VARNING-OSYNLIG  LASERSTRALNING  NAR  DENNA  DEL  AR  OPPNAD.
STIRRA  EJ IN  I  STRALEN  OCH  BETRAKTA  EJ  STRALEN  GENOM  OPTISKT  
INSTRUMENT.

ADVERSEL-USYNLIG  LASERSTRALING  NAR  DEKSEL  APNES.  STIRR IKKE  
INN  I  STRALEN  ELLER  SE  DIREKTE  MED  OPTISKE  INSTRUMENTER.

Laser Diode Properties

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

LASER KLASSE 1

LUOKAN 1 LASERLAITE

KLASS 1 LASERAPPARAT

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Specifications for this model are subject to change without
prior notice.

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

●

50 - 14,000 Hz (Normal tape)

Signal/noise ratio: 50 dB

0.3 % (DIN 45 511)

● 

2-way [10 cm (4") woofer and

1.5 cm (9/16") tweeter]

20 W

40 W

4 ohms

Width; 160 mm (6-5/16")

Height; 240 mm (9-1/2")
Depth; 190 mm (7-7/16")

1.8 kg (4.0 lbs.)/each

2-way [10 cm (4") woofer and

2.5 cm (1") semi dome
tweeter]

20 W

40 W

4 ohms

Width; 160 mm (6-5/16")

Height; 240 mm (9-1/2")
Depth; 189 mm (7-1/16")

2.4 kg (5.3 lbs.)/each

●

AC 230 V, 50 Hz

50 W

Width; 160 mm (6-5/16")

Height; 241 mm (9-1/2")
Depth; 298 mm (11-3/4")

3.6 kg (7.9 lbs.)

●

PMPO; 120 W (total)
MPO; 60 W (30 W + 30 W)
(DIN 45 324)

RMS; 40 W (20 W + 20 W)

(DIN 45 324)

Output terminals: Speakers; 4 ohms

Headphones; 16-50 ohms
(recommended; 32 ohms)

CD digital output (optical)

Video/Auxiliary (audio signal);

500 mV/47 k ohms

● 

Frequency range: FM; 87.5-108 MHz

AM; 522-1,620 kHz

●

Compact disc player

Non-contact, 3-beam semi-

conductor laser pickup

1-bit D/A converter

8-times oversampling digital

filter

20 - 20,000 Hz

Unmeasurable

(less than 0.001% W. peak)

RMS; 40 W (20 W + 20 W)
(10 % T.H.D.)

0.25 % (WRMS)

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