CD-BA1500 (serv.man6). Part 1 - Text - Sharp Audio Service Manual (repair manual)

cd-ba1500 (serv.man6) service manual
Model
CD-BA1500 (serv.man6)
Pages
19
Size
722.33 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Part 1 - Text
File
cd-ba1500-sm6.pdf
Date

Read Sharp CD-BA1500 (serv.man6) Service Manual online

– 1 –
CD-BA1500H
SHARP CORPORATION
No. S3018CDBA1500
 CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ............................................................................................................ 2
IMPORTANT SERVICE NOTES (FOR U.K. ONLY) ..........................................................................................................  2
SPECIFICATIONS .............................................................................................................................................................  3
NAMES OF PARTS ...........................................................................................................................................................  4
OPERATION MANUAL ......................................................................................................................................................  6
QUICK GUIDE (FOR U.K. ONLY) ....................................................................................................................................... 7
DISASSEMBLY ..................................................................................................................................................................  9
REMOVING AND REINSTALLING THE MAIN PARTS ...................................................................................................  12
ADJUSTMENT .................................................................................................................................................................  13
NOTES ON SCHEMATIC DIAGRAM ..............................................................................................................................  20
TYPES OF TRANSISTOR AND LED ................................................................................................................................ 20
BLOCK DIAGRAM ...........................................................................................................................................................  21
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD .............................................................................................. 24
VOLTAGE ........................................................................................................................................................................  41
WAVEFORMS OF CD CIRCUIT ......................................................................................................................................  42
TROUBLESHOOTING .....................................................................................................................................................  43
FUNCTION TABLE OF IC ................................................................................................................................................  47
FL DISPLAY ...................................................................................................................................................................... 53
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING METHOD (FOR U.K. ONLY)
CD-BA1500H
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
SERVICE MANUAL
CD-BA1500H Mini Component System consisting of
CD-BA1500H (mani unit) and CP-BA1500H (speaker system).
CD-BA1500H
– 2 –
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
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.
IMPORTANT SERVICE NOTES (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.
Set name
set value
Withstanding Voltage Tester
Test voltage
4,240 VPEAK
3,000 VRMS
Set time
6 secs
Set current(Cutoff current)
4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzor sounds.
(For Europe)
(For U.K.)
SHORT-CIRCUIT
AC POWER 
SUPPLY CORD
CONNECT THE PROBE
TO GND 
OF CHASSIS
SCREW
 PROBE
AC
UNIT
WITHSTANDING
VOLTAGE TESTER
+
-
OUT
CHASSIS SCREW
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
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.
VAROI TUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN
TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAV ALLA SAATTAA
ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN  ANVÄNDS PÅ ANNAT SÄTT
ÄN I DENNA BRUKSANVISNING SPECIFICERAS. KAN
A NV ÄN DA RE N  UT S ÄT T AS  FÖR  OSY NLI G
LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR
LASERKLASS 1.
CAUTION
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
– 3 –
CD-BA1500H
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.
SPECIFICATIONS
CD-BA1500H
CP-BA1500H
  Cassette deck section
Type:
Compact cassette tape
Frequency response:
50 - 14,000 Hz (Normal tape)
Motor:
DC motor with electronic
governor x 1
Signal/noise ratio:
55 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/
playback)
Bias and erasure system: AC
Tape speed:
4.76 cm/sec. (1-7/8 ips.)
Wow and flutter:
0.35 % (DIN 45 511)
(Except for U.K.)
Wow and flutter:
0.3 % (WRMS)
(For U.K.)
Heads:
TAPE-1: Playback x 1
TAPE-2: Record/playback x 1
Erase x 1
 Speaker section
Type:
3-way type [10 cm (4")
woofer x 2 and 5 cm (2")
tweeter]
Maximum input power:
100 W
Rated input power:
50 W
Impedance:
6 ohms
Dimensions:
Width; 231.5 mm (9-1/8")
Height; 330 mm (13")
Depth; 210 mm (8-1/4")
Weight:
3.1 kg (6.8 lbs.)/each
  General
Power source:
AC 230 V, 50 Hz
Power consumption:
95 W
Dimensions:
Width; 270 mm (10-5/8")
Height; 330 mm (13")
Depth; 375 mm (14-6/8")
Weight:
6.4 kg (14.0 lbs.)
  Amplifier section
Output power:
PMPO; 320 W (total)
(Except for U.K.)
MPO; 160 W (80 W + 80 W)
(DIN 45 324)
RMS; 100 W (50 W + 50 W)
(DIN 45 324)
RMS; 74 W (37 W + 37 W)
(DIN 45 500)
Output power:
RMS; 100 W (50 W + 50 W)
(For U.K.)
(10 % T.H.D.)
RMS; 74 W (37 W + 37 W)
(0.9 % T.H.D.)
Output terminals:
Speakers; 6 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)
CD digital output (optical)
Input terminal:
Video/Auxiliary (audio signal);
500 mV/47 kohms
  Compact disc player section
Type:
3-disc multi-play compact disc
player
Signal readout:
Non-contact, 3-beam semi-
conductor laser pickup
D/A Converter:
1-bit D/A converter
Frequency response:
20 - 20,000 Hz
Dynamic range:
90 dB (1 kHz)
  Tuner section
Frequency range:
FM; 87.5 - 108 MHz
AM; 522 - 1,620 kHz
CD-BA1500H
– 4 –
NAMES OF PARTS
CD-BA1500H
 Front panel
1
1.
(CD) Disc Tray
1
2.
Spectrum Analyzer/Volume Level Indicator
1
3.
Extra Bass Indicator
1
4.
RDS Indicator
1
5.
Programme Type Indicator
1
6.
Traffic Information Indicator
1
7.
FM Stereo Mode Indicator
1
8.
FM Stereo Indicator
1
9.
Dynamic PTY Indicator
10.
EON Indicator
11.
Traffic Announcement Indicator
12.
Traffic Programme Indicator
13.
(CD) Repeat Indicator
14.
Sleep Indicator
15.
(CD/TUNER) Memory Indicator
16.
(TAPE 2) Record Indicator
17.
(CD) Disc Number Indicators
18.
Timer Play Indicator
19.
(CD) Pause Indicator
20.
(CD) Play Indicator
21.
Timer Record Indicator
22.
(TAPE) Play Indicator
23.
(TUNER) Programme Type/Traffic Information
                      Search  Button
24.
(TUNER) EON Button
25.
(TUNER) ASPM Button
26.
(TUNER) Display Mode Selector Button
27.
(TUNER) Station Selector Button
28.
(CD) Track Up/Cue Button
3
(TUNER) Preset Up Button
3
(TAPE 2) Fast Forward Button
29.
Timer Set Indicator
30.
On/Stand-by Button
31.
Clock Button
32.
Timer/Sleep Button
33.
Function Selector Buttons
34.
Dimmer Button
35.
Volume Up/Down Buttons
36.
Equalizer Mode Selector Button
37.
Extra Bass/Demo Mode Button 
38.
(CD) Open/Close Button
39.
Headphone Socket
40.
Tuning and Time Up/Down Buttons
41.
Memory/Set Button
42.
(CD) Track Down/Review Button
3
(TUNER) Preset Down Button
3
(TAPE 2) Rewind Button
43.
(CD/TAPE) Stop Button
44.
(CD) Play/Repeat Button
3
(TAPE) Play Button
45.
(TAPE 2) Record Pause Button
46.
(CD) Disc Skip Button
47.
(TAPE 1) Cassette Compartment
48.
(TAPE 2) Cassette Compartment
1
7 8
10
21
2
4
9
14
12
2
22
18
3
6
5
11
20
19
13
15 16
17
2
36
27
29
30
31
32
33
35
37
39
42 43 44 45 46
40 41
23
26
28
25
24
34
38
48
47
Page of 19

Download Sharp CD-BA1500 (serv.man6) Service Manual (Repair Manual)

Here you can read online and download Sharp CD-BA1500 (serv.man6) Service Manual in PDF. CD-BA1500 (serv.man6) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp CD-BA1500 (serv.man6) System. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.