QT-CD161H (serv.man2) — Sharp Audio User Guide / Operation Manual

Model
QT-CD161H (serv.man2)
Pages
40
Size
1.91 MB
Type
PDF
Document
User Guide / Operation Manual
Brand
Device
Audio / Portable
File
qt-cd161h-sm2.pdf
Date

View Sharp QT-CD161H (serv.man2) User Guide / Operation Manual online

QT-CD141H/161H/162H
– 1 –
CONTENTS
Page
SAFETY PRECATION FOR SERVICE MANUAL ..............................................................................................................  2
IMPORTANT SERVICE NOTES (161H FOR U.K. ONLY) ................................................................................................  3
SPECIFICATIONS .............................................................................................................................................................  3
NAMES OF PARTS ...........................................................................................................................................................  4
REMOTE CONTROL .......................................................................................................................................................... 4
DISASSEMBLY ..................................................................................................................................................................  5
REMOVING AND REINSTALLING THE MAIN PARTS .....................................................................................................  6
ADJUSTMENT ...................................................................................................................................................................  7
NOTES ON SCHEMATIC DIAGRAM ..............................................................................................................................  10
TYPES OF TRANSISTOR ...............................................................................................................................................  10
BLOCK DIAGRAM ...........................................................................................................................................................  11
SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD ...............................................................................................  14
VOLTAGE ........................................................................................................................................................................  24
WAVEFORMS OF CD CIRCUIT ......................................................................................................................................  25
TROUBLESHOOTING (CD SECTION) ...........................................................................................................................  26
FUNCTION TABLE OF IC ................................................................................................................................................  30
PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (161H 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.
QT-CD141H(SL)
QT-CD161H(S)
QT-CD162H(S)
SERVICE MANUAL
SHARP  CORPORATION
No. S5932QTCD161H
Illustration: QT-CD162H
DIFFERENCE BETWEEN QT-CD161H AND QT-CD141H AND QT-CD162H
• 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.
SECTION
QT-CD141H
REMOTE CONTROL
SURROUND
QT-CD161H
QT-CD162H
QT-CD141H/161H/162H
– 2 –
SAFETY PRECATION FOR
SERVICE MANUAL
Precaution to be taken when replacing and servicing the
Laser Pickup.
The ael (ACCESSIBLE EMMISSION LEVEL) of the laser
power output is less than class 1 but the laser component is
capable of emitting radiation exceeding the limit for class 1.
Therefore it is important that the following precautions are
observer during servicing to protect your eyes against exposure
to the laser beam.
(1) When the cabinet is removed, the power is turned on
without a compact disc in position and the pick-up is on the
outer edge the laser will light for several seconds to detect
a disc. Do not look into the pick-up lens.
(2) The laser power output of the pick-up unit and replacement
service parts are all factory pre-set before shipment.
Do not attempt to re-adjust the laser pick-up unit during
replacement or servicing.
(3) Under no circumstances stare into the pick-up lens at any
time.
(4) CAUTION-USE of controls or adjustments, or pereformance
of procedures other than those specified herein may result
in hazardous radiation exposure.
(161H For U.K.)
(161H Except for U.K./141H/162H)
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
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
QT-CD141H/161H/162H
– 3 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS
    General
Power source:
AC 230 - 240V, 50 Hz
DC 12 V [ "D" size (UM/SUM-1,
R20 or HP-2) battery x 8]
DC 3 V ["AA" size (UM/SUM-3, R6
or HP-7) battery x 2 for tuner
memory]
Power consumption:
11 W
Output power:
PMPO; 28 W (total)
(161H Except forU.K.
MPO; 8.4 W (4.2 W + 4.2 W)
/141H/162H)
(AC operation, DIN 45 324)
RMS; 4.6 W (2.3 W + 2.3 W)
(DC operation, DIN 45 324)
Output power:
MPO; 8.4 W (4.2 W + 4.2 W)
(161H For U.K.)
(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 terminal:
Headphones; 16-50 ohms
(recommended; 32 ohms)
Dimensions:
Width; 480 mm (18-15/16")
Height; 153 mm (6-1/16")
Depth; 254 mm (10")
Weight:
3.2 kg (7.1 Ibs.) without batteries
    Radio
Frequency range:
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 flitter:
0.3 % (DIN 45 511)
(161H Except for U.K./Australia/New Zealand/141H/162H)
Wow and flitter:
0.25 % (WRMS)
(161H For U.K./Australia/New Zealand)
Motor:
DC 12 V electric governor
Bias system:
AC bias
Erase system:
Magnet erase
    Compact disc player
Disc:
Compact disc
Signal readout:
Non-contact, 3-beam semi-
conductor laser pickup
Audio channels:
2
Quantization:
16-bit linear quantization
Filter:
4-tims oversampling digital filter
D/A converter:
1-bit D/A converter
Wow and flutter:
Unmeasurable
(less than 0.001% W. peak)
Specifications for this model are subject to change without
prior notice.
IMPORTANT SERVICE NOTES (161H FOR U.K. ONLY)
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
PROBE
AC
OUT
UNIT
SHORT-CIRCUT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF BATTERY 
SPRING
WITHSTANDING
VOLTAGE TESTER
QT-CD141H/161H/162H
– 4 –
NAMES OF PARTS
1. (TAPE) Record Button
2. (TAPE) Play Button
3. (TAPE) Rewind Button
4. (TAPE) Fast Forward Button
5. (TAPE) Stop/Eject Button
6. (TAPE) Pause Button
7. Cassette Compartment
8. CD Compartment
9. CD Eject Button
10. (CD) Pause Button
(TUNER) Band Selector Button
11. Preset Memory Button
12. (CD) Stop Button
(TUNER) Tuning Down Button
13. (CD) Play/Repeat Button
(TUNER) Tuning Up Button
14. (CD) Track Up/Cue Button
(TUNER) Preset Up Button
15. (CD) Track Down/Review Button
(TUNER) Preset Down Button
16. Stand-by, On/Function Switch
17. Extra Bass Switch
18. Surround Switch (162H ONLY)
19. Volume Control
20. (CD) Play Indicator
21. (CD) Repeat Indicator
22. (CD) Pause Indicator
23. Memory Indicator
24. (TUNER) FM Stereo MOde Indicator
25. (TUNER) FM Stereo Indicator
26. Battery Compartment
27. FM Telescopic Rod Aerial
28. Headphone Socket
29. AC Power Input Socket
 Remote control (161H/162H ONLY)
30. (CD) Track Down/Review Button
(TUNER) Preset Down Button
31. (CD) Pause Button
(TUNER) Band Selector Button
32. (CD) Play/Repeat Button
(TUNER) Tuning Up Button
33. (CD) Track Up/Cue Button
(TUNER) Preset Up Button
34. (CD) Stop Button
(TUNER) Tuning Down Button
REMOTE CONTROL (161H/162H ONLY)
20 21 22 23 24 25
1 2 3 4 5
6 7 8 9
10
11
16
18 19
13
14
15
12
17
26
27
28 29
Illustration: QT-CD162H
30
31
32
33
34
15
15
Remote Sensor
0.2 m - 6 m
(8" - 20')
Notes:
Replace the batteries if the operating distance is
reduced or if the operation becomes erratic.
Periodically clean the transmitter LED on the
remote control and the sensor on the main unit
with a soft cloth.
Exposing the sensor on the main unit to strong
light may interfere with operation. Change the
lighting or the direction of the unit.
Keep the remote control away from moisture,
excessive heat, shock, and vibrations.
Illustration: QT-CD162H
Page of 40
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Here you can view online or download Sharp QT-CD161H (serv.man2) User Guide / Operation Manual in pdf. This User Guide / Operation Manual can help you recover, restore, fix, disassemble and repair Sharp QT-CD161H (serv.man2) Portable. Information contained in Sharp QT-CD161H (serv.man2) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).