Read Sharp QT-CD180 (serv.man3) Service Manual online
QT-CD180H/QT-CD180W
CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL(FOR QT-CD180H) ............................................................................ 2
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) .......................................................................................................... 3
SAFETY PRECAUTION FOR SERVICE MANUAL(FOR QT-CD180W) ........................................................................... 4
VOLTAGE SELECTION (QT-CD180W ONLY) .................................................................................................................. 4
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 4
SPECIFICATIONS ............................................................................................................................................................. 5
NAMES OF PARTS ........................................................................................................................................................... 6
FITTING OF DIAL POINTER ............................................................................................................................................. 6
OPERATION MANUAL ...................................................................................................................................................... 7
DISASSEMBLY .................................................................................................................................................................. 8
REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................... 9
ADJUSTMENT ................................................................................................................................................................. 11
SCHEMATIC DIAGRAM .................................................................................................................................................. 14
WIRING SIDE OF P.W.BOARD ....................................................................................................................................... 16
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 18
TYPES OF TRANSISTOR ............................................................................................................................................... 18
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 19
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 20
FUNCTION TABLE OF IC ................................................................................................................................................ 25
PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (QT-CD180H FOR U.K. ONLY)
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) .......................................................................................................... 3
SAFETY PRECAUTION FOR SERVICE MANUAL(FOR QT-CD180W) ........................................................................... 4
VOLTAGE SELECTION (QT-CD180W ONLY) .................................................................................................................. 4
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................. 4
SPECIFICATIONS ............................................................................................................................................................. 5
NAMES OF PARTS ........................................................................................................................................................... 6
FITTING OF DIAL POINTER ............................................................................................................................................. 6
OPERATION MANUAL ...................................................................................................................................................... 7
DISASSEMBLY .................................................................................................................................................................. 8
REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................... 9
ADJUSTMENT ................................................................................................................................................................. 11
SCHEMATIC DIAGRAM .................................................................................................................................................. 14
WIRING SIDE OF P.W.BOARD ....................................................................................................................................... 16
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 18
TYPES OF TRANSISTOR ............................................................................................................................................... 18
WAVEFORMS OF CD CIRCUIT ...................................................................................................................................... 19
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 20
FUNCTION TABLE OF IC ................................................................................................................................................ 25
PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (QT-CD180H 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.
be used.
SERVICE MANUAL
SHARP CORPORATION
No. S2110QTCD180H
QT-CD180H(BL)
QT-CD180H(RD)
QT-CD180H(S)
QT-CD180W(BL)
QT-CD180W(RD)
QT-CD180W(S)
QT-CD180H(RD)
QT-CD180H(S)
QT-CD180W(BL)
QT-CD180W(RD)
QT-CD180W(S)
PORTABLE CD STEREO SYSTEM
MODEL
• Note for users in U.K.
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.
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.
QT-CD180H/QT-CD180W
– 2 –
SAFETY PRECAUTION FOR SERVICE MANUAL (FOR QT-CD180H)
For Europe
For U.K.
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 1 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
The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class 1 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
(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.
WARNINGS
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA
KÄYTTÄJÄN TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE
LASERSÄTEILYLLE.
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA
KÄYTTÄJÄN TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE
LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I DENNA
BRUKSANVISNING SPECIFICERAS. KAN ANVÄNDAREN UTSÄTTAS FÖR
OSYNLIG LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR
LASERKLASS 1.
BRUKSANVISNING SPECIFICERAS. KAN ANVÄNDAREN UTSÄTTAS FÖR
OSYNLIG LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR
LASERKLASS 1.
1
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.
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.
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.
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.
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.
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 KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
QT-CD180H/QT-CD180W
– 3 –
IMPORTANT SERVICE NOTES (FOR U.K. ONLY)
PROBE
AC
OUT
UNIT
SHORT-CIRCUT
AC POWER
SUPPLY CORD
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW TERMINAL
TO GND OF CHASSIS
SCREW TERMINAL
WITHSTANDING
VOLTAGE TESTER
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.
test to be applied to ensure the unit is safe for the customer to use.
Setting of Withstanding Voltage Tester and set.
NG: The “NG” lamp lights and the buzzor sounds.
OK: The “GOOD” lamp lights.
Judgment
Unit
Set current (Cutoff current)
Set time
Set name
Withstanding Voltage Tester
Test voltage
Set value
4,240 VPEAK
3,000 VRMS
6 secs
4 mA
For Australia/New Zealand/Philippines
CAUTION
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
●
This Portable CD Stereo System is classi-
fied as a CLASS 1 LASER product.
fied as a CLASS 1 LASER product.
●
The CLASS 1 LASER PRODUCT label is
located on the rear cover.
located on the rear cover.
●
Use of controls, adjustments or perfor-
mance of procedures other than those
specified herein may result in hazardous
radiation exposure.
mance of procedures 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 servic-
ing to qualified personnel only.
player is harmful to the eyes, do not attempt
to disassemble the cabinet. Refer servic-
ing to qualified personnel only.
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.
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.
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.
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.
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.
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.
QT-CD180H/QT-CD180W
– 4 –
VOLTAGE SELECTION
(QT-CD180W ONLY)
QACCA0001SJ00
QACCB0001SJ00
QACCE0001SJZZ/QACCZ0008AW00
QPLGA0250AFZZ
QPLGA0253AFZZ
AC POWER SUPPLY CORD AND
AC PLUG ADAPTOR
SAFETY PRECAUTION FOR SERVICE MANUAL (FOR QT-CD180W)
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 1 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
The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class 1 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
(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.
WARNINGS
Before operating the unit on mains, check the preset voltage.
If the voltage is different from your local voltage, adjust the
voltage as follows, Turn the selector with a screwdriver until
the appropriate voltage number appears in the window (AC110
- 127 V or AC220 - 240 V).
If the voltage is different from your local voltage, adjust the
voltage as follows, Turn the selector with a screwdriver until
the appropriate voltage number appears in the window (AC110
- 127 V or AC220 - 240 V).
CAUTION
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
●
This Portable CD Stereo System is classified as a
CLASS 1 LASER product.
●
The CLASS 1 LASER PRODUCT label is located
on the rear cover.
●
Use of controls, adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
result in hazardous radiation exposure.
As the laser beam used in this compact disc player
is harmful to the eyes, do not attempt to disas-
semble the cabinet. Refer servicing to qualified
personnel only.
semble the cabinet. Refer servicing to qualified
personnel only.
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.
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.
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.
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.
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.
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.
VOLTAGE SELECTOR
AC
110-127V
110-127V
AC
220-240V
220-240V
Operation with AC power
To an AC socket
To AC INPUT
AC 110-127/
220-240 V,
50/60 Hz
220-240 V,
50/60 Hz
Check the setting of the AC voltage selector located on the bottom
before plugging the unit into an AC socket. If necessary, adjust the
selector to correspond to the AC power voltage used in your area.
before plugging the unit into an AC socket. If necessary, adjust the
selector to correspond to the AC power voltage used in your area.
Selector adjustment:
Slide the selector with a screwdriver to the appropriate voltage number.
(AC 110 - 127 V or AC 220 - 240 V)
Slide the selector with a screwdriver to the appropriate voltage number.
(AC 110 - 127 V or AC 220 - 240 V)
AC plug adaptor:
In areas (or countries) where an AC socket as shown in illustration 2
is used, connect the unit using the AC plug adaptor supplied with the
unit, as illustrated. The AC plug adaptor is not included in areas where
the AC wall socket and AC power plug can be directly connected (see
illustration 1 ).
In areas (or countries) where an AC socket as shown in illustration 2
is used, connect the unit using the AC plug adaptor supplied with the
unit, as illustrated. The AC plug adaptor is not included in areas where
the AC wall socket and AC power plug can be directly connected (see
illustration 1 ).
Notes:
●
If the unit will not be used for a long period of time, remove the AC
power lead from the AC socket.
power lead from the AC socket.
●
Connection of the AC power lead to the unit disconnects the batter-
ies.
ies.
●
Never use a power lead other than the one supplied. It may cause an
electric shock or fire.
electric shock or fire.
1
2
QACCL0002AW00
