CD-C470E (serv.man3) — Sharp Audio Service Manual (repair manual)

Model
CD-C470E (serv.man3)
Pages
76
Size
2.94 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System
File
cd-c470e-sm3.pdf
Date

View Sharp CD-C470E (serv.man3) Service Manual online

– 1 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
SERVICE MANUAL
No. S6738CDC470HE
 CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL ..........................................................................................................  2
IMPORTANT SERVICE NOTES (CD-C470E ONLY) .......................................................................................................  2
SPECIFICATIONS ............................................................................................................................................................  3
NAMES OF PARTS ..........................................................................................................................................................  4
OPERATION MANUAL .....................................................................................................................................................  6
DISASSEMBLY .................................................................................................................................................................  7
REMOVING AND REINSTALLING THE MAIN PARTS ..................................................................................................  10
ADJUSTMENT ................................................................................................................................................................  11
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................  18
 TYPE OF TRANSISTOR AND LED ................................................................................................................................  18
BLOCK DIAGRAM ..........................................................................................................................................................  19
 SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD ............................................................................................. 22
WAVEFORMS OF CD CIRCUIT .....................................................................................................................................  43
 TROUBLESHOOTING (CD CHANGER CONTROL / CD SECTION) .............................................................................  44
FUNCTION TABLE OF IC ..............................................................................................................................................  48
 FL DISPLAY ..................................................................................................................................................................... 58
WIRING OF PRIMARILY SUPPLY LEADS (CD-C470E ONLY) .....................................................................................  58
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF METHOD (FOR CD-C470E/CP-C470E ONLY)
CD-C470H
CD-C470E
CD-C480H
CP-C470H
CP-C470E
CP-C480H
CD-C470H, CP-C470H, center speaker system and surround speaker
system constitute CD-C470H.
CD-C470E, CP-C470E, center speaker system and surround speaker
system constitute CD-C470E.
CD-C480H, CP-C480H, center speaker system and surround speaker
system constitute CD-C480H.
• 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.
Illustration: CD-C470H/CP-C470H
SHARP CORPORATION
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 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.
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 (CD-C470E ONLY)
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.
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
(CD-C470H/CD-C480H)
(CD-C470E)
CHASSIS
SCREW
– 3 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
    Cassette deck section
Type:
Compact cassette tape
Frequency response:
50 - 14,000 Hz (Normal tape)
50 - 15,000 Hz (CrO
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)
(CD-C470H/C480H)
Wow and flutter:
0.15 % (WRMS)
(CD-C470E)
Heads:
TAPE-1: Playback x 1
TAPE-2: Record/playback x 1
     Erase x 1
Type:
3-way type [130 mm (5-1/8") woofer,
50 mm (2") tweeter and super tweeter]
Maximum input power: 50 W
Impedance:
8 ohms
Dimensions:
Width; 200 mm (7-7/8")
Height; 300 mm (11-13/16")
Depth; 252 mm (9-15/16")
Weight:
2.7 kg (6.0 lbs.)/each
Type:
100 mm (4") full-range speaker
Maximum input power: 20 W
Impedance:
6 ohms
Dimensions:
Width; 262 mm (10-5/16")
Height; 145 mm (5-3/4")
Depth; 201 mm (7-15/16")
Weight:
1.4 kg (3.1 lbs.)/each
Type:
100 mm (4") full-range speaker
Maximum input power: 10 W
Impedance:
12 ohms
Dimensions:
Width; 170 mm (6-3/4")
Height; 122 mm (4-13/16")
Depth; 176 mm (6-15/16")
Weight:
0.7 kg (1.5 lbs.)/each
    General
Power source:
AC 230 V, 50 Hz
Power consumption:
160 W
Dimensions:
Width; 270 mm (10-5/8")
Height; 300 mm (11-13/16")
Depth; 368 mm (14-1/2")
Weight:
6.8 kg (15.0 lbs.)
    Amplifier section
Output power:
PMPO; 300 W (total)
(CD-C470H/C480H)
(Front)
MPO; 110 W (55 W + 55 W) (DIN 45 324)
RMS; 50 W (25 W + 25 W) (DIN 45 324)
 42 W (21 W + 21 W) (DIN 45 500)
(Center)
MPO; 20 W (DIN 45 324)
RMS; 10 W (DIN 45 324)
 7 W (DIN 45 500)
(Surround)
MPO; 20 W (total) (DIN 45 324)
RMS; 10 W (total) (DIN 45 324)
 7 W (total) (DIN 45 500)
(CD-C470E)
(Front)
MPO; 110 W (50 W + 50 W) (10 % T.H.D)
RMS; 50 W (25 W + 25 W) (10 % T.H.D)
 42 W (21 W + 21 W) (0.9 % T.H.D)
(Center)
MPO; 20 W (10 % T.H.D)
RMS; 10 W (10 % T.H.D)
 7 W (0.9 % T.H.D)
(Surround)
MPO; 20 W (total) (10 % T.H.D)
RMS; 10 W (total) (10 % T.H.D)
 7 W (total) (0.9 % T.H.D)
Input terminals:
Video/Auxiliary (audio signal) x 2;
500 mV/47 kohms
Output terminals:
Front speakers; 8 ohms
Center speakers; 6 ohms
Surround Speakers; 12 ohms
CD digital output (optical)
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.
Specifications for this model are subject to change without
prior notice.
CD-C470H/CD-C470E/CD-C480H
CP-C470H/CP-C470E/CP-C480H
CENTER SPEAKER SYSTEM
SURROUND SPEAKER SYSTEM
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 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. 4-Speaker Indicator: 4-SP (CD-C480H Only)
17. Dolby Pro Logic Indicator
18. Sleep Indicator
19. FM Stereo Mode Indicator: ST
20. FM Stereo Indicator: 
21. SRS Indicator (CD-C480H Only)
22. Extra Bass Indicator: X-BASS
23. Memory Indicator
24. Direction Indicators
25. Reverse Mode indicator: 
26. Record indicator
27. Timer Indicator
28. Spectrum Analyzer/Volume Level/Balance Indicator
29. On/Stand-by Switch
30. 3D Surround Mode Button (CD-C480H Only)
31. Extra Bass Button: X-BASS
32. Volume Up/Down Buttons: 
33. 4-Speaker Surround Mode Button (CD-C480H Only)
34. Clock Button
35. Timer/Sleep Button
36. Programme Type/Traffic Information Search Button
37. EON button
38. ASPM Button
39. Display Mode Selector Button
40. Memory/Set Button
41. Tuning and Time Up/Down Buttons: 
42. Edit/Beat Cancel Buttons:
NORMAL/HIGH (BEAT CANCEL)
43. Reverse Mode Button
44. Headphone Socket
45. Function Selector Buttons
46. Record Pause Button: 
47. Bypass Button
48. Track Down/Review/Preset Down Button: 
49. (TAPE 2) Reverse Play Button: 
50. Stop Button: 
51. (TAPE 1) Play Button/(TAPE 2) Forward Play Button/
(CD) Play/Repeat Button: 
52. Track Up/Cue/Preset Up Button: 
53. Centre Mode Buttons: NORMAL/PHANTOM
54. Equalizer Selector/Demo Mode Button
55. (TAPE 1) Cassette Compartment
56. (TAPE 2) Cassette Compartment
CD-C470H/CD-C470E/CD-C480H
1
2
3 4
29
30 31 32 33
34
35
36
37
38
39
40 41
42 43 44
1
2
3
X-BASS
kHz
MHz
RDS
EON
TA
PTY
TP
63 250 1k
4k 16k
SLEEP
4-SP
ST
MEMORY
PRO LOGIC
REC
TI
5 6 7
8
9
15
16 17
21
18
19
20
10 11 12
13
14
22
23 24 25 26 27 28
46
45
47
50
49
48
51
52
53
54
55
56
(Illustration: CD-C480H)
Page of 76
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Here you can view online or download Sharp CD-C470E (serv.man3) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp CD-C470E (serv.man3) System. Information contained in Sharp CD-C470E (serv.man3) 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).