QT-CD210 (serv.man3) - Sharp Audio Service Manual (repair manual)

qt-cd210 (serv.man3) service manual
Model
QT-CD210 (serv.man3)
Pages
36
Size
1.54 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / Portable
File
qt-cd210-sm3.pdf
Date

Read Sharp QT-CD210 (serv.man3) Service Manual online

QT-CD210H/W
– 1 –
Illustration: QT-CD210H
CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ...........................................................................................................  2
IMPORTANT SERVICE NOTES (QT-CD210H FOR U.K.  ONLY) ....................................................................................  3
VOLTAGE SELECTION (QT-CD210W ONLY) ..................................................................................................................  3
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR (FOR QT-CD210W) ................................................................  3
SPECIFICATIONS .............................................................................................................................................................  4
NAMES OF PARTS ...........................................................................................................................................................  5
FITTING OF DIAL POINTER .............................................................................................................................................  5
OPERATION MANUAL ......................................................................................................................................................  6
DISASSEMBLY ..................................................................................................................................................................  8
REMOVING AND REINSTALLING THE MAIN PARTS .....................................................................................................  8
ADJUSTMENT .................................................................................................................................................................  10
SCHEMATIC DIAGRAM ..................................................................................................................................................  12
WIRING SIDE OF P.W.BOARD .......................................................................................................................................  14
NOTES ON SCHEMATIC DIAGRAM ..............................................................................................................................  16
TYPES OF TRANSISTOR ...............................................................................................................................................  16
WAVEFORMS OF CD CIRCUIT ......................................................................................................................................  17
TROUBLESHOOTING (CD SECTION) ...........................................................................................................................  18
FUNCTION TABLE OF IC ................................................................................................................................................  22
PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (QT-CD210H 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.
SERVICE MANUAL
SHARP  CORPORATION
No. S1002QTCD210H
QT-CD210H(BK)
QT-CD210H(BL)
QT-CD210H(S)
QT-CD210W(BK)
QT-CD210W(BL)
QT-CD210W(S)
• 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.
Illustration: QT-CD210W
QT-CD210H/W
– 2 –
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.
SAFETY PRECAUTION FOR SERVICE MANUAL
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
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.
VAROITUS! LAITTEEN KéYTTéMINEN
MUULLA KUIN TéSSé
KéYTTôOHJEESSA MAINITULLA
TAVALLA SAATTAA ALTISTAA
KéYTTéJéN TURVALLISUUSLUOKAN 1
YLITTéVéLLE NéKYMéTTôMéLLE
LASERSéTEILYLLE.
VARNING - OM APPARATEN ANVéNDS
Pè ANNAT SéTT éN I DENNA
BRUKSANVISNING SPECIFICERAS. KAN
ANVéNDAREN UTSéTTAS FôR OSYNLIG
LASERSTRèLNING, SOM ôVERSKRIDER
GRéNSEN FôR LASERKLASS 1.
QT-CD210H for Europe
QT-CD210H for Australia/New Zealand/Thailand/Philippines/QT-CD210W
CAUTION
This Portable CD Stereo System is classified
as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT label is lo-
cated on the rear cover.
Use of controls, adjustments or performance 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 servicing to
qualified personnel only.
Laser Diode Properties
       Material: GaAIAs
       Wavelength: 780 nm
       Emission Duration: continuous
       Laser Output: max. 0.6 mW
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.
QT-CD210H/W
– 3 –
IMPORTANT SERVICE NOTES (QT-CD210H FOR U.K. ONLY)
VOLTAGE SELECTION (QT-CD210W ONLY)
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 unitil the correct voltage figure is displayed in the window next the adjustment screw.
QACCA0001SJ00
QACCB0001SJ00
QACCE0001SJZZ
QPLGA0250AFZZ
QPLGA0253AFZZ
QT-CD210H for Europe
QT-CD210H for U.K.
PROBE
AC
OUT
UNIT
SHORT-CIRCUT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW TERMINAL
WITHSTANDING
VOLTAGE TESTER
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
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.
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
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR (FOR QT-CD210W)
QT-CD210H/W
– 4 –
QT-CD210H/W
SPECIFICATIONS
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.
 General
Power
consumption:
(QT-CD210H)
8 W
Output power:
(QT-CD210H for
U.K./Australia/
New Zealand/
Thailand/
Philippines/
QT-CD210W)
MPO; 8.4 W (4.2 W + 4.2 W) 
(AC operation, 10 % T.H.D.)
RMS; 4.6 W (2.3 W + 2.3 W)
(DC operation, 10 % T.H.D.)
Speakers:
10 cm (4") full-range speaker x 2
Output
terminals:
Headphones; 16-50 ohms
(recommended; 32 ohms)
Dimensions:
Width; 400 mm (15-3/4")
Height; 158 mm (6-1/4")
Depth; 212 mm (8-3/8")
Weight:
2.2 kg (6.0 lbs.) without batteries
 Compact disc player
Type:
Compact disc
Signal
readout:
Non-contact, 3-beam semi-
conductor laser pickup
Audio
channels:
2
Filter:
8-times oversampling digital filter
D/A
converter:
1-bit D/A converter
Wow and
flutter:
Unmeasurable
(less than 0.001% W. peak)
 Radio
Frequency
range:
(QT-CD210H)
FM; 87.5 - 108 MHz
AM; 526.5 - 1,606.5 kHz
 Tape recorder
Frequency
response:
50 - 14,000 Hz (Normal tape)
Signal/noise
ratio:
50 dB
Wow and
flutter:
(QT-CD210H for 
U.K./Australia/
New Zealand/
Thailand/
Philippines/
QT-CD210W)
0.25 % (WRMS)
Motor:
DC 9 V electric governor
Bias system:
AC bias
Erase system: Magnet erase
Power source:
(QT-CD210H for 
Philippines)
AC 220 V, 60 Hz
DC 9 V 
[
"D" size (UM/SUM-1, R20
or HP-2) battery 
×
 6
]
Wow and
flutter:
(QT-CD210H for
Europe)
0.3 % (DIN 45 511)
Output power:
(QT-CD210H for 
Europe)
MPO; 8.4 W (4.2 W + 4.2 W)
(AC operation, DIN 45 324)
RMS; 4.6 W (2.3 W + 2.3 W)
(DC operation, DIN 45 324)
Power source:
(QT-CD210H for
 Australia/
New Zealand/
Thailand)
AC 230-240 V, 50 Hz
DC 9 V 
[
"D" size (UM/SUM-1, R20
or HP-2) battery 
×
 6
]
Power source:
(QT-CD210H for 
U.K./Europe)
AC 230-240 V, 50 Hz
DC 9 V 
[
"D" size (UM/SUM-1, R20
or HP-2) battery 
×
 6
]
Power source:
(QT-CD210W)
AC 110-127/220-240 V, 50/60 Hz
DC 9 V 
[
"D" size (UM/SUM-1, R20
or HP-2) battery 
×
 6
]
Power
consumption:
(QT-CD210W)
10 W
 Radio
Frequency
range:
(QT-CD210W)
FM; 88 - 108 MHz
AM; 526.5 - 1,606.5 kHz
Page of 36
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Download Sharp QT-CD210 (serv.man3) Service Manual (Repair Manual)

Here you can read online and download Sharp QT-CD210 (serv.man3) Service Manual in PDF. QT-CD210 (serv.man3) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp QT-CD210 (serv.man3) Portable. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.