XL-515H (serv.man3) - Sharp Audio Service Manual (repair manual)

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Page

SAFETY PRECAUTION FOR SERVICE MANUAL ..........................................................................................................  2
SPECIFICATIONS ............................................................................................................................................................  3
NAMES OF PARTS ..........................................................................................................................................................  4
OPERATION MANUAL .....................................................................................................................................................  6
DISASSEMBLY .................................................................................................................................................................  7
REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................  8
ADJUSTMENT ..................................................................................................................................................................  9
BLOCK DIAGRAM ..........................................................................................................................................................  16

 SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................  20

VOLTAGE .......................................................................................................................................................................  28
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................  29

 TYPE OF TRANSISTOR AND LED ................................................................................................................................  29

WAVEFORMS OF CD CIRCUIT .....................................................................................................................................  30

 TROUBLESHOOTING (CD SECTION) ..........................................................................................................................  31

FUNCTION TABLE OF IC ..............................................................................................................................................  36

 LCD SEGMENT ..............................................................................................................................................................  44

REPLACEMENT PARTS LIST/EXPLODED VIEW

 • 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.

• SRS technology Licensed from SRS Labe. SRS technology holds

the follwing patents: U.S. Patent No. 4,748,669, U.S. Patent No.
4,841,572 and U.S. Patent No. 4,866,774.

• SRS the SRS Logo (    ) and the SOUND RETRIEVAL SYSTEM

are registered trademarks of SRS Labs, Inc.

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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.

LASER KLASSE 1

LUOKAN 1 LASERLAITE

KLASS 1 LASERAPPARAT

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.

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50 - 14,000 Hz (Normal tape)

50 dB

0.3 % (DIN 45 511)

2-way [10 cm (4") woofer and 2 cm
(13/16") tweeter]

10 W

Maximum input power: 20 W
Impedance:

8 ohms

Width; 160 mm (6-5/16")
Height; 240 mm (9-1/2")
Depth; 183 mm (7-1/4")

1.6 kg (3.5 lbs.)/each

AC 230 V, 50 Hz

80 W

Width; 160 mm (6-5/16")
Height; 240 mm (9-1/2")
Depth; 300 mm (11-13/16")

3.5 kg (7.7 lbs.)

PMPO; 56 W (total)
MPO; 28 W (14 W + 14 W) (DIN 45 324)
RMS; 20 W (10 W + 10 W) (DIN 45 324)

Video/Auxiliary (audio signal);
500 mV/47 kohms

Speakers; 8 ohms
CD digital output (optical)
Headphones; 16-50 ohms
(recommended; 32 ohms)

FM; 87.5 - 108 MHz
MW; 522 - 1,620 kHz
LW; 153-281 kHz

    Compact disc player section

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)

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

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

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    Front Panel