CD-C440H (serv.man2) — Sharp Audio Service Manual (repair manual)

Model
CD-C440H (serv.man2)
Pages
72
Size
2.77 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System
File
cd-c440h-sm2.pdf
Date

View Sharp CD-C440H (serv.man2) Service Manual online

– 1 –
CD-C440H/CP-C440H
SERVICE MANUAL
No. S6745CDC440H/
 CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ..........................................................................................................  2
IMPORTANT SERVICE NOTES (FOR UK ONLY) ...........................................................................................................  3
SPECIFICATIONS ............................................................................................................................................................  3
NAMES OF PARTS ..........................................................................................................................................................  4
OPERATION MANUAL .....................................................................................................................................................  6
DISASSEMBLY .................................................................................................................................................................  7
REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................  9
ADJUSTMENT ................................................................................................................................................................  10
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................  16
TYPES OF TRANSISTOR AND LED .............................................................................................................................  16
 BLOCK DIAGRAM ..........................................................................................................................................................  17
 SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................. 20
WAVEFORMS OF CD CIRCUIT .....................................................................................................................................  41
 TROUBLESHOOTING (CD SECTION) ..........................................................................................................................  42
FUNCTION TABLE OF IC ..............................................................................................................................................  46
 FL DISPLAY ..................................................................................................................................................................... 56
WIRING OF PRIMARILY SUPPLY LEADS (FOR UK ONLY) ........................................................................................  56
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF METHOD (FOR UK ONLY)
CD-C440H
CP-C440H
CD-C440H, CP-C440H constitute CD-C440H.
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
Manufactured under license from Dolby Laboratories Licens-
ing Corporation. DOLBY, the double-D symbol 
 and
"PRO LOGIC" are trademarks of Dolby Laboratories Licens-
ing Corporation.
• SRS technology Licensed from SRS Labe. SRS technology holds
the follwing patents: U.S. Patent No. 4,748,669, U.S. Patent No.
4,841,572 and U.S. Patent No. 4,866,774.
• SRS the SRS Logo (    ) and the SOUND RETRIEVAL SYSTEM
are registered trademarks of SRS Labs, Inc.
SHARP CORPORATION
 
• Note for users in UK
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.
CD-C440H/CP-C440H
– 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.
Laser Diode Properties
Material: GaAIAs
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.
VARNING - OM APPARATEN ANVÄNDS PÅANNAT SÄTTÄN I
DENNA BRUKSANVISNING SPECIFICERAS.
KANANVÄNDAREN UTSÄTTAS FÖR OSYNLIG
LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR
LASERKLASS 1.
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
(For Europe)
(For UK)
CAUTION-INVISIBLE  LASER  RADIATION  WHEN  OPEN.  DO  NOT  STARE  INTO 
BEAM  OR  VIEW  DIRECTLY  WITH  OPTICAL  INSTRUMENTS.
VARNING-OSYNLIG  LASERSTRÅLNING  NÄR  DENNA  DEL  ÄR  ÖPPNAD.  STIRRA
EJ  IN  I  STRÅLEN  OCH  BETRAKTA  EJ  STRÅLEN   MED  OPTISKA  INSTRUMENT.
ADVERSEL-USYNLIG  LASERSTRÅLING  VED  ÅBNING.  SE  IKKE  IND  I 
STRÅLEN-HELLER  IKKE  MED  OPTISKE  INSTRUMENTER.
VARO!  AVATTAESSA  OLET  ALTTIINA  NÄKYMÄTÖN  LASERSÄTEILYLLE.
ÄLÄ  TUIJOTA  SÄTEESEEN  ÄLÄKÄ  KATSO  SITÄ  OPTISEN  LAITTEEN  LÄPI.
VARNING-OSYNLIG  LASERSTRÅLNING  NÄR  DENNA  DEL  ÄR  ÖPPNAD.
STIRRA  EJ IN  I  STRÅLEN  OCH  BETRAKTA  EJ  STRÅLEN  GENOM  OPTISKT  
INSTRUMENT.
ADVERSEL-USYNLIG  LASERSTRÅLING  NÅR  DEKSEL  ÅPNES.  STIRR IKKE  
INN  I  STRÅLEN  ELLER  SE  DIREKTE  MED  OPTISKE  INSTRUMENTER.
– 3 –
CD-C440H/CP-C440H
    General
Power source:
AC 230 V, 50 Hz
Power consumption:
200 W
Dimensions:
Width; 270 mm (10-5/8")
Height; 300 mm (11-13/16")
Depth; 368 mm (14-1/2")
Weight:
6.9 kg (15.2 lbs.)
    Amplifier section
Output power:
PMPO; 380 W (total)
MPO; 192 W (96 W + 96 W) (DIN 45 324)
RMS; 100 W (50 W + 50 W) (DIN 45 324)
Input terminals:
Video/Auxiliary (audio signal) x 2;
500 mV/47 kohms
Output terminals:
Speakers; 6 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)
    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
MW; 522 - 1,620 kHz
LW; 153 - 281 kHz
SPECIFICATIONS
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
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.
SHORT-CIRCUIT
AC POWER 
SUPPLY CORD
CONNECT THE PROBE
TO GND TERMINAL
OF PHONO TERMINAL 
 PROBE
AC
UNIT
WITHSTANDING
VOLTAGE TESTER
+
-
OUT
OF CHASSIS
SCREW
IMPORTANT SERVICE NOTES (FOR UK ONLY)
Specifications for this model are subject to change without
prior notice.
CD-C440H
CHASSIS
SCREW
CP-C440H
    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:
0.2 % (DIN 45 511, playback)
Heads:
TAPE-1: Playback x 1
TAPE-2: Record/playback x 1
     Erase x 1
Type:
2-way 160 mm (6-1/2") woofer and
50 mm (2") tweeter type
Maximum input power: 100 W
Impedance:
6 ohms
Dimensions:
Width; 200 mm (7-7/8")
Height; 300 mm (11-13/16")
Depth; 247 mm (9-3/4")
Weight:
3.4 kg (7.5 lbs.)/each
CD-C440H/CP-C440H
– 4 –
NAMES OF PARTS
    Front Panel
1. Disc Tray
2. Disc Number Selector Buttons
3. Disc Skip Button
4. Open/Close Button: 
5. CD Play Indicator: 
6. CD Repeat Indicator: 
7. CD Pause Indicator: 
8. Disc Number Indicator
9. RDS Indicator
10. EON Indicator
11. Traffic Announcement Indicator: TA
12. Traffic Programme Indicator:TP
13. Traffic Information Indicator: TI
14. Programme Type Indicator: PTY
15. Function/CD Track/Preset Channel/Volume/
Frequency/CD Counter/Time/Sleep Time Indicator
16. 3D Surround Indicator
17. Sleep Indicator
18. FM Stereo Mode Indicator: ST
19. FM Stereo Indicator: 
20. Extra Bass Indicator: X-BASS
21. Memory Indicator
22. Direction Indicators
23. Reverse Mode indicator: 
24. Record indicator
25. Timer Indicator
26. Spectrum Analyzer/Volume Level/Balance Indicator
27. On/Stand-by Switch
28. Extra Bass Button: X-BASS
29. Volume Up/Down Buttons: 
30. Clock Button
31. Timer/Sleep Button
32. Programme Type/Traffic Information Search Button
33. EON button
34. ASPM Button
35. Display Mode Selector Button
36. Memory/Set Button
37. Tuning and Time Up/Down Buttons: 
38. Edit/Beat Cancel Buttons:
NORMAL/HIGH (BEAT CANCEL)
39. Reverse Mode Button
40. Headphone Socket
41. Function Selector Buttons
42. Record Pause Button: 
43. 3D Surround Mode Buttons: PASS/MONO/STEREO
44. Track Down/Review/Preset Down Button: 
45. (TAPE 2) Reverse Play Button: 
46. Stop Button: 
47. (TAPE 1) Play Button/(TAPE 2) Forward Play Button/
(CD) Play/Repeat Button: 
48. Track Up/Cue/Preset Up Button: 
49. Equalizer Selector/Demo Mode Button
50. (TAPE 1) Cassette Compartment
51. (TAPE 2) Cassette Compartment
CD-C440H
1
2
3 4
1
2
3
X-BASS
kHz
MHz
RDS
EON
TA
PTY
TP
63 250 1k
4k 16k
SLEEP
ST
MEMORY
REC
TI
5
7
8 9 1011 12
13
14
15
16 17
18
19
20
21
22 23242526
6
27
28 29
30
31
32
33
34
35
36 37
38 39 40
41
42
43
44
45 46 47
48
49
50
51
Page of 72
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Here you can view online or download Sharp CD-C440H (serv.man2) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp CD-C440H (serv.man2) System. Information contained in Sharp CD-C440H (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).