Sharp cd c 471
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Page 1
CD-C471W
SHARP SERVICE MANUAL
No. $6845CDC471 W/
CD-C471 W
CD-C471 W mini component system consisting at
(JD-€471 W mini component system, front (CF-C471), Semer
(GEOXSOOOSAWM6)and surroundIGBOXSOOMAWMS)
Speaker System.
. In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
illustration: CD-c471W
I lfiJMPACT
DIGITAL AUDIO
Du oomv sunnouno
P R o L o e | c
Manufactured under license from Dolby Laboratories Licens-
ing Corporation.
DOLBY, the double»D symbol DE] 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. 10
ADJUSTMENT .................................... ll
NOTES ON SCHEMATIC DIAGRAM 14
TYPE OF TRANSISTOR AND LED 14
BLOCK DIAGRAM .......................... 15
SCHEMATIC DIAGRAM /W|R|NG SIDE OF P.W.BOARD 18
WAVEFORMS OF CD CIRCUIT .......................................... 39
TROUBLESHOOTING (CD CHANGER CONTROL ICD SECTION). 40
FUNCTION TABLE OF IC 44
FL DISPLAY ...................... 54
REPLACEMENT PARTS LIST/EXPLODED VIEW
,\__-.*
This document has been ublished to be used
SHARP CORPORATION for after sales sewiceonly?
The contents are subject to change without notice.
Page 1
CD-C471W
SHARP SERVICE MANUAL
No. $6845CDC471 W/
CD-C471 W
CD-C471 W mini component system consisting at
(JD-€471 W mini component system, front (CF-C471), Semer
(GEOXSOOOSAWM6)and surroundIGBOXSOOMAWMS)
Speaker System.
. In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
illustration: CD-c471W
I lfiJMPACT
DIGITAL AUDIO
Du oomv sunnouno
P R o L o e | c
Manufactured under license from Dolby Laboratories Licens-
ing Corporation.
DOLBY, the double»D symbol DE] 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. 10
ADJUSTMENT .................................... ll
NOTES ON SCHEMATIC DIAGRAM 14
TYPE OF TRANSISTOR AND LED 14
BLOCK DIAGRAM .......................... 15
SCHEMATIC DIAGRAM /W|R|NG SIDE OF P.W.BOARD 18
WAVEFORMS OF CD CIRCUIT .......................................... 39
TROUBLESHOOTING (CD CHANGER CONTROL ICD SECTION). 40
FUNCTION TABLE OF IC 44
FL DISPLAY ...................... 54
REPLACEMENT PARTS LIST/EXPLODED VIEW
,\__-.*
This document has been ublished to be used
SHARP CORPORATION for after sales sewiceonly?
The contents are subject to change without notice.
Page 2
CD-C471 W
SAFETY PRECAUTION FOR
SERVICE MANUAL
Precaution to be taken when replacing and servicing the
Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output
forthis model is specified to belowerthan Class l 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
outerthan the lead-in position, the Laserwill lightforseveral
,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 DlDde Properties
Material: GaAIAs
Wavelength. 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
Westmw. m- [
mmwmmmm
CAUTION
ELISE 1 LASER lltltlllC'T
AFPIHEIL A LASER DE CLASSE l
rnnuucm LASER DE ELISE I
. This Mini Component System is classified as a CLASS
1 LASER product.
0 The CLASS 1 LASER PRODUCT label is located on the
rear cover,
a Use of controls. adjustments or performance of proce
dures other than those specified herein may result in han
ardous 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. J
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 the correct voltage figure is displayed in the window next to the adjustment screw.
QACCBOOOZAWOO
lmEB'
QACC E0005AWOO
92LCORDZ1652A
92LP LU G027
92LCORD577B
D
QACCLOOOZAWOO
QZLPLU6155A
Figure 2 POWER SUPPLY CORD AND PLUG ADAPTOR
_2_
Page 2
CD-C471 W
SAFETY PRECAUTION FOR
SERVICE MANUAL
Precaution to be taken when replacing and servicing the
Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output
forthis model is specified to belowerthan Class l 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
outerthan the lead-in position, the Laserwill lightforseveral
,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 DlDde Properties
Material: GaAIAs
Wavelength. 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
Westmw. m- [
mmwmmmm
CAUTION
ELISE 1 LASER lltltlllC'T
AFPIHEIL A LASER DE CLASSE l
rnnuucm LASER DE ELISE I
. This Mini Component System is classified as a CLASS
1 LASER product.
0 The CLASS 1 LASER PRODUCT label is located on the
rear cover,
a Use of controls. adjustments or performance of proce
dures other than those specified herein may result in han
ardous 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. J
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 the correct voltage figure is displayed in the window next to the adjustment screw.
QACCBOOOZAWOO
lmEB'
QACC E0005AWOO
92LCORDZ1652A
92LP LU G027
92LCORD577B
D
QACCLOOOZAWOO
QZLPLU6155A
Figure 2 POWER SUPPLY CORD AND PLUG ADAPTOR
_2_