Sharp CD-C470HCD-C470E User manual

– 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,centerspeakersystemandsurroundspeaker
system constitute CD-C470H.
CD-C470E,CP-C470E,centerspeakersystemandsurroundspeaker
system constitute CD-C470E.
CD-C480H,CP-C480H,centerspeakersystemandsurroundspeaker
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
forthismodelisspecifiedtobelowerthanClassIRequirements.
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
outerthanthelead-inposition,theLaserwilllightforseveral
seconds to detect a disc. Do not look into the Pickup Lens.
(2) The Laser Power Output of the Pickup inside the unit and
replacementservicepartshavealreadybeenadjustedprior
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-Useofcontrolsor adjustments, orperformance
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!LAITTEENKÄYTTÄMINENMUULLA 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.
Beforereturning theunit tothe customerafter completionof a
repairoradjustmentit is necessaryfor thefollowingwithstand
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 (CrO2 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
1234
29 30 3132 33
34
35
36
37
38
39 40 41 4243 44
123
X-BASS
kHz
MHz
RDS
EON TA PTY TP
63 250 1k 4k 16k
SLEEP4-SPST
MEMORY
PRO LOGIC
REC
TI
567 89
15 16 17
21
18
19
20
10 11 12
13
14
22
23 242526 27 28
46
45
47
50
49
48 51 52
53
54
55 56
(Illustration: CD-C480H)

– 5 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
Rear Panel
1. CD Digital Output Socket
2. Video/Auxiliary (Audio Signal) Input Sockets
3. AC Power Lead
4. FM 75 ohms Aerial Socket
5. MW/LW Loop Aerial Input Socket
6. Front Speaker Terminals
7. Center Speaker Terminals
8. Surround Speaker Terminals
CD-C470H/CD-C470E/CD-C480H
Speaker Section
9. Tweeter
10. Super Tweeter
11. Woofer
12. Bass Reflax Duct
13. Speaker Wire
14. Full-Range Speaker
15. Speaker Wire
16. Full-Range Speaker
17. Speaker Wire
Remote Control
1. Remote Control Transmitter LED
2. Surround Level Buttons:
3. Center Level Buttons:
4. 4-Speaker Surround Mode Button (CD-C480H Only)
5. Dolby Pro Logic Button
6. Center Mode Button
7. Test Tone Button
8. Balance Control Buttons:
9. Programme Type/Traffic Information Search Button
Tuner control section
10. Preset Up/Down Buttons:
CD Control section
11. Disc Skip Button
12. Play/Repeat Button:
13. Memory Button
14. Clear Button
15. Pause Button:
16. Track Down/Review Button:
17. Track Up/Cue Button:
18. Stop Button:
19. Random Button
Tape control section
20. (TAPE 2) Reverse Play Button:
21. (TAPE 1/2) Stop Button:
22. (TAPE 1) Play Button/
(TAPE 2) Forward Play Button:
23. (TAPE 2) Record Pause Button:
24. (TAPE 2) Rewind Button:
25. (TAPE 2) Fast Forward Button:
26. 3D Surround Mode Button (CD-C480H Only)
27. Equalizer Mode Button
28. Function Selector Buttons
29. On/Stand-by Button
30. Extra Bass Button: X-BASS
31. Volume Up/Down Buttons:
CD-C470H/CD-C470E/CD-C480H
1
2
3
4
5
6
7
8
9
10
12 13
11
14
15
16
17
1
2
3
4
5
6
8
7
9
10
12
13 14 15 1617 18 19
20 21 22
25
26
27
28
23
24
29
11
30
31

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 6 –
OPERATION MANUAL
ON/ STAND-BY
CLOCK
MEMORY/ SET
TUNING/TIME ( )
AM 0:00AM 12:000:00
2 3
4
7
6 5
8 9
SETTING THE CLOCK
1
Set the ON/STAND-BY switch to STAND-BY.
2
Press the CLOCK button.
3
Within 5 seconds, press the MEMORY/SET button.
4
Press the TUNING/TIME ( or ) button to select the time display mode.
"AM 12:00" →The 12-hour display will appear. (AM 12:00 - PM 11:59) "AM 0:00" → The 12-hour display will appear. (AM 0:00 - PM 11:59) "0:00" →The 24-hour display will appear. (0:00 - 23:59)
5
Press the MEMORY/SET button.
6
Press the TUNING/TIME ( or ) button to adjust the hour. Press the TUNING/TIME button once to advance the time by 1 hour. Press for more than 0.5 seconds to advance continu- ously. When the 12-hour display is selected, "AM" will change auto- matically to "PM".
7
Press the MEMORY/SET button.
8
Press the TUNING/TIME ( or ) button to adjust the minutes. Press the button for at least 0.5 seconds to change the time in 5-minute intervals. The hour setting will not advance even if minutes advance from "59" to "00".
9
Press the MEMORY/SET button. The clock starts operating from "0" seconds. (Seconds are not displayed.)
Note:
In the event of a power failure or when the AC power lead is disconnected, the clock display will go out. When the AC power supply is restored, the clock display will flash on and off to indicate the time when the power failure occurred or when the AC power lead was disconnected.
If this happens, follow the procedure below to change the clock time.
To change the clock time:
When the ON/STAND-BY switch is set to STAND-BY.
When the unit is in the demonstration mode, press the DEMO button to enter the clock mode.
1
Press the MEMORY/SET button.
2
Perform steps 6 - 9 above.
When the ON/STAND-BY switch is set to ON.
1
Press the CLOCK button.
2
Within 5 seconds, press the MEMORY/SET button.
3
Perform steps 6 - 9 above.
To see the time display: (When the power is ON) Press the CLOCK button.
The time display will appear for about 5 seconds.
To switch the time display mode: 1
Set the ON/STAND-BY switch to STAND-BY.
2
Press the VOLUME button, the TUNING/TIME button and the ON/STAND-BY switch all at the same time. Hold them down for at least 1 second.
3
Perform steps 1 - 9 above.
Note:
The operation explained above will erase all data stored in memory, such as clock and timer settings, tuner and CD pres- ets.
In this example, the clock is set for the 24-hour (0:00) system.
PREPARATION FOR USE
15
15
Notes concerning use:
Replace the batteries if control distance decreases or oper- ation 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.
0.2 m - 6 m (8" - 20')
1,2
2
2
RESETTING THE MICROCOMPUTER
Reset the microcomputer under the following conditions:
To erase all of the stored memory contents (clock and timer settings, tuner and CD presets). If the display is not correct. If the operation is not correct.
Note:
To erase the tuner preset memory, see "To erase all of the contents of preset memory" on page 19.
1Press the ON/STAND-BY switch to enter the stand-by mode. 2Press the VOLUME button, the TUNING/TIME button
and the ON/STAND-BY switch all at the same time. Hold them down for at least 1 second.

– 7 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3.Takeoffnylonbandsorwireholderswheretheyneedbe
removed when disassembling the unit. After servicing
theunit, besure torearrange theleads wherethey were
before disassembling.
4. Take suffcient care on static electricity of integrated
circuits and other circuits when servicing.
Figure 7-2
Figure 7-3
1 Top Cabinet 1. Screw ..................... (A1) x4 7-1
2 Side Panel 1. Screw ..................... (B1) x6 7-1
(Left/right)
3 CD Player Unit/ 1. Turn on the power supply, 7-2
CD Tray Cover open the disc tray, take out
the CD cover, and close.
(Note 1)
2. Hook....................... (C1) x3
3. Hook....................... (C2) x2
4. Screw ..................... (C3) x1
5. Socket .................... (C4) x4
4 Tuner PWB 1. Screw ..................... (D1) x4 7-2
2. Screw ..................... (D2) x1
3. Socket .................... (D3) x1
5 Back Board 1. Screw ..................... (E1) x7 7-2
6 Main PWB 1. Screw ..................... (F1) x1 8-1
2. Holder .................... (F2) x2
3. Flat Wire................. (F3) x4
4. Socket .................... (F4) x3
7 Headphones PWB 1. Screw ..................... (G1) x1 8-1
8 Front Panel 1. Screw ..................... (H1) x2 8-1
9 Display PWB/ 1. Screw ..................... (J1) x3 8-2
Switch PWB 2. Screw ..................... (J2) x11
10 Tape Mechanism 1. Open the cassette holder. 8-2
2. Screw...................... (K1) x6
11 Power Amp. PWB 1. Screw ..................... (L1) x4 8-3
12 Turntable 1. Screw ..................... (M1) x1 8-4
2. Cover ..................... (M2) x1
13 Disc Tray 1. Screw ..................... (N1) x2 8-4
2. Guide ..................... (N2) x2
14 CD Changer 1. Screw ..................... (P1) x4 8-5
Mechanism
15 CD Mechanism 1. Screw ..................... (Q1) x1 8-5
STEP REMOVAL PROCEDURE FIGURE
Note 1:
How to open the changer manually. (Fig. 7-3)
1. Insert the tip of fine screwdriver into the hole of CD player
base, and press down the worm wheel < A > .
2. Then, turn fully the lock lever in the arrow direction through
the hole on the loading chassis bottom in this state.
After that, push forward the CD player base.
Figure 7-1
CD-C470H/CD-C470E/CD-C480H
( B1 ) x2
ø3 x8mm
( B2 ) x2
ø3 x8mm ( B1 ) x2
ø3 x8mm
Top Cabinet
Side Panel
(Right)
Rear Panel
Side Panel
(Left)
( A1 ) x2
ø3 x12mm
( A1 ) x2
ø3 x12mm
CD-C470H/CD-C470E/CD-C480H
CD Tray Cover
CD Player Unit
( D1 ) x4
ø3 x10mm
( D3 ) x1
ø3 x10mm
( E1 ) x7
ø3 x8mm
( C3 ) x1
ø3 x8mm
( D2 ) x1
ø3 x8mm
Hook
( C1) x3
( C4 ) x4
( D3 ) x1
( C2 ) x1
Back
Board
Main PWB
Tuner
PWB
Front Panel
1
1
2
Pull
A
(C2)x1
< A >
LOCK
LEVER

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 8 –
Figure 8-1
Figure 8-2
Figure 8-3
Figure 8-4
Care when installing the CD changer mechanism.
InstalltheCDchangermechanismontheCDplayerbaseafter
the shift lever has been set in the highest position.
Figure 8-5
Main PWB ( H1 ) x2
ø3 x8mm
( G1 ) x1
ø3 x11mm
( F4 ) x3
( F3 ) x1
Front Panel
Tape
Mechanism
( F1 ) x1
ø3 x10mm
Push
Push
Headphon
PWB
( F3 ) x2
( F3 ) x1
( F2 ) x2
Display
PWB
Switch PWB
Tape
Mechanism
Open
Cassette
Holder
(Left/Right)
Front Panel
( K1 ) x6
ø3 x10mm
( J2 ) x11
ø3 x10mm
( J1 ) x3
ø3 x10mm
Power Supply PWB ( L1 ) x4
ø3 x10mm
Power Amp.
PWB
( M1 ) x1
ø3 x10mm
( M1 ) x1
ø3 x10mm
( L1 ) x1
ø3 x10mm
Turntable
Disc Tray
( L2 ) x1
( M2 ) x1
( M2 ) x1
CD Player Unit
( N1 ) x4
ø3 x14mm
( P1 ) x1
ø2.6 x10mm
CD Changer
Mechanism
CD Mechanism
Shift Lever
CD Player Base

– 9 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
Figure 9-1
Figure 9-2
STEP REMOVAL PROCEDURE FIGURE
1 Front Speaker 1. Net........................... (A1) x1 9-1
(Left/Right) 2. Front Panel ............. (A2) x1
3. Screw ...................... (A3) x6
STEP REMOVAL PROCEDURE FIGURE
1 Top Cabinet 1. Screw ...................... (B1) x6 9-2
STEP REMOVAL PROCEDURE FIGURE
1 Top Cabinet 1. Screw ...................... (C1) x9 9-3
( A3 ) x2
ø4 x16mm
( A3 ) x4
ø4 x16mm
Screwdriver
Net
( A1 ) x1
Front Pael
( A2 ) x1
Tweeter
Super Tweeter
Woofer
Figure 9-3
(B1)x2
ø3x20mm
(B1)x2
ø3x20mm
(B1)x2
ø3x20mm
Woofer
(C1)x2
ø3x20mm
(C1)x3
ø3x20mm (C1)x4
ø3x20mm
CP-C470H/CP-C470E/CP-C480H
CENTER SPEAKER SYSTEM
SURROUND SPEAKER SYSTEM
CP-C470H/CP-C470E/CP-C480H
CENTER SPEAKER SYSTEM
SURROUND SPEAKER SYSTEM

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 10 –
Figure 10-2
How to remove the pickup (See Fig. 10-2)
1.Remove the screws (B1) x2 pcs.,to removethe shaft(B2).
2. Remove the stop washer (B3) x 1 pc., to remove the gear
(B4).
3. Remove the pickup.
REMOVING AND REINSTALLING THE MAIN PARTS
CD MECHANISM SECTION
Perform steps 1, 2, 3, 14 and 15 of the disassembly method
to remove the CD mechanism.
How to remove the turntable up/down motor
(See Fig. 10-1)
1. Remove the screws (A1) x 2 pcs., to remove the turntable
up/down motor.
Figure 10-1
( B1 ) x2
2.6 x6mm
Shaft
( B2 ) x1
Stop Washer
( B3 ) x1
Gear
( B4 ) x1
CD Mechanism
Pickup
( A1 ) x2
ø2 x5mm
Turntable Up/Down Motor

– 11 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
MECHANISM SECTION
• Driving Force Check
Torque Meter Specified Value
Play: TW-2412 Tape 1: Over 80 g
Tape 2: Over 80 g
• Torque Check
Torque Meter
Tape 2
Play: TW-2111 30 to 60 g. cm 30 to 100 g.cm
Fast forward: TW-2231 — 50 to 100 g.cm
Rewind: TW-2231 — 50 to 100 g.cm
Specified
Value
Adjusting
Point Instrument
Connection
Test Tape
Normal MTT-111 VRM1 3,000 ±Speaker
speed 30 Hz terminal
ADJUSTMENT
Specified Value
Tape 1
• Tape Speed
fL: Low-range frequency
fH: High-renge frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
IF 450 kHz 1,620 kHz T351 *1
MW Band — 522 kHz (fL): T306 *2
Coverage 1.1 ±0.1 V
MW 990 kHz 990 kHz (fL): T302 *1
Tracking
LW Band — 153 kHz (fL): T305 *2
Coverage 1.5 ±0.1 V
LW 225 kHz 225 kHz (fL): T301 *1
Tracking
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
• FM
Notes:
1: Description of the "FM IF Adjustment" is not carried on this
Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.
2: The parts in the FM front end section are prepared in a
complete unit, so you can't obtain each part individually
Adjusting
Parts Instrument Connection
Frequency
Display
Frequency
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
98.00 MHz 98.00 MHz VR351* Input: Antenna
(25 dBµV) Output: Speaker
Terminal
Figure 11-1 ADJUSTMENT POINTS
TUNER SECTION
*1. Input: Antenna, Output: TP302
*2. Input: Antenna, Output: TP301
VRM1
TAPE
SPEED
TAPE MECHANISM PWB
TUNER PWB
TP301
CNP301
SO301
ANTENNA
TERMINAL
FE301
TP302
R357
T351
T306
T305 T302 T301
VR351
AM IF
FM MUTE
LEVEL
MW BAND
COVERAGE
MW
TRACKING LW TRACKING
LW BAND
COVERAGE

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 12 –
TEST MODE
2
1
TO
TE
200 ms
1V/diV
IC 1 15
200 ms
1V/diV
IC 1 7
TRACKING/
ERROR
BARANCE
ADJUST
Figure 12-2 Figure 12-3
2
1
10ms
0.50 V
IC1 20 FE
10ms
0.50 V
IC1 7 TE
Enlarged
View
TRACKING
OFF-SET
ADJUST
Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is not necessary
to readjust it.
Since this CD unit does not need adjustment, the combination of PWB and laser pickup unit is not restricted.
• Automatic adjustment item
1. Focus offset (Fig. 12-2)
2. Tracking offset (Fig. 12-3)
3. E/F balance (tracking error balance) (Fig. 12-4)
4. RF level AGC function (HF level: constant)
5. RF level automatic follow-up of the tracking gain
This automatic adjustment is performed each time a disc is changed. Therefore,
each disc is played back using the optimal settings.
CD SECTION Figure 12-1
Note:
Only in STOP state it is possible to slide the pickup with the ( ) or ( ) key.
VOL. --- Last memory
BAL. --- CENTER
R.GEQ. --- FLAT
X-BAS --- OFF
Canceling method - POWER OFF
• Setting the test mode
Any one of test mode can be set by pressing several keys as follows.
<REC. PAUSE> + <CD> + <POWER> TEST: CD operation test
• TEST mode
Function — CD test mode
Setting of TEST mode
Indication of CD TST mode (Fig. 12-1)
OPEN/CLOSE operation is manual operation.
The pickup can be moved by using the ( ) or ( ) key.
<MEMORY>
LASER ON
<PLAY> key input Press <STOP> key. Stop
TOC. IL is performed, and the ordinary PLAY is performed.
If the following key is pressed during PLAY, it is possible
to specify directly any Track No.
<Disc Number 1> key: Track 4
<Disc Number 2> key: Track 9
<Disc Number 3> key: Track 15
<MEMORY>
Tracking on the spot.
SERVO OFF PLAY
<MEMORY>
Tracking on the spot.
SERVO ON PLAY STOP
2
0.1s
0.50 V
IC1 20 FE
0.1s
0.50 V
IC1 7 TE
1
FOCUS
OFF-SET
ADJUST
TRACKING
OFF-SET
ADJUST
Figure 12-4
IL is not performed.
<STOP>

– 13 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
SP out L-ch Input signal is output.
(SO901) R-ch Input signal is output.
(SO903) SP out C-ch SP cut, no output
(SO902) SP out S-ch Almost no output (only omitting component)
SP out L-ch Almost no output (only omitting component)
(SO901) R-ch Almost no output (only omitting component)
(SO903) SP out C-ch Input signal is output.
(SO902) SP out S-ch Almost no output (only omitting component)
State of set Dolby Pro Logic Dolby Pro Logic On mode
Output point Bypass mode Normal mode Phantom mode
IC202 16 pin L-out Output enabled state Output enabled state Output enabled state
15 pin R-out Output enabled state Output enabled state Output enabled state
IC201 34pin C-out No output Output enabled state No output
IC202 13pin S-out No output Output enabled state Output enabled state
SP OUT L-ch Output enabled state Output enabled state Output enabled state
(SO901) R-ch Output enabled state Output enabled state Output enabled state
SP OUT C-ch No output in MUTE (Q504) state Output enabled state No output in MUTE (Q504) state
(SO903)
SP OUT S-ch No output in MUTE (Q503) state Output enabled state Output enabled state
(SO902)
EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD
Test tone output
• Pro Logic ON Normal mode
Press the remote control TEST TONE button.
→Output of only L-ch →Output of only C-ch
↑ ↓
Output of only S-ch ←Output of only R-ch
The test tone (noise) is repeatedly output for output period
(2 sec).
In this case the following indication appears repeatedly.
→TEST →L-ch →C-ch
↑ ↓
S-ch ← R-ch
• Pro Logic ON Phantom mode
Press the remote control TEST TONE button.
→Output of only L-ch →Output of only R-ch
↑ ↓
←Output of only S-ch
The test tone (noise) is repeatedly output for output period
(2 sec).
In this case the following indication appears repeatedly.
→TEST → L-ch → R-ch
↑↓
←S-ch←
Outline
• Namely, two speakers are connected in parallel to one
amplifier.
•IntheProLogicBYPASSmodetheamplifierforC-ch(center
channel)andtheamplifierforS-ch(surroundchannel)arein
MUTE state. The SP output is cut.
• In the normal mode of Pro Logic ON mode the amplifiers for
C-ch and S-ch are in operative state, so that the SP output
appears.
•Inthe Phantommodeof Pro LogicONmode theamplifier for
C-ch is in MUTE state, so that the SP output is cut. The
amplifier for S-ch (surround) is in operative state, so that the
SP output appears
•State of element output and terminal output in specific mode
Relation between VIDEO IN input and output in Pro Logic
ON state
(1) L-ch/R-ch same phase input into VIDEO IN input jack in
VIDEO Function mode
Output point Normal mode
Output point Phantom mode
(2) L-ch/R-ch reverse phase input into VIDEO IN input jack in
VIDEO Function mode
(Reverse phase: Phase difference between L and R is 180°)
Output point Normal mode
SP out L-ch Almost no output (only omitting component)
(SO901) R-ch Almost no output (only omitting component)
(SO903) SP out C-ch Almost no output (only omitting component)
(SO902) SP out S-ch Input signal is output.
Output point Phantom mode
SP out L-ch Almost no output (only omitting component)
(SO901) R-ch Almost no output (only omitting component)
(SO903) SP out C-ch SP cut, no output
(SO902) SP out S-ch Input signal is output.
•Accordingly,ifyouwanttooutputsignalwaveformtoC-chSP
out, give the same phase input into L-ch/R-ch INPUT in the
Pro Logic Normal mode.
Ifoneofchannelsreceivesinput,C-chdoesnotoutput. Only
L-ch or R-ch outputs.
•IfyouwanttooutputsignalwaveformtoS-chSPout,youcan
use either Normal mode or Phantom mode. However, 180°
reverse phase input must be given to L-ch/R-ch INPUT.

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 14 –
RDS
1. RDS Function
PI ASPM
PS STATION NAME
PTY PTY SEARCH
PTY(31)
EON TI (TA) STAND-BY MODE
EON-PTY EON-TI/PTY
EON-AF With EON-AF
TP ind.
TA ind.
2. DISPLAY and control buttons
Select and search (18 kind items) by cyclic
NEWS-AFFAIRS ------ OTHER M - ALARM - TP - TA
Select and stand-by (17 kind items) by cyclic
NEWS-AFFAIRS ------ OTHER M - ALARM - TI
RDS
EON TA TP
PTY TI
DISPLAY
8 character can display E1 table of EBU.
Same as CD-C75H.
Lights up when RDS with EON station is received.
Lights up when RDS station is received.
Lights up when TA station is received.
Lights up when TP station is received.
Lights up when stand-by mode and blinks during staying other network
station.
ASPM DISPLAY PTY•TI
SEARCH
SET PTY•TI
SELECT
EON
PTY and TI items can be
selected when use PTY search
or EON STAND-BY
Can use for
• EON setting
• confirm stand-by item
• cancel (ON→TN)
• EON clear cancel
18 kind
(contain TP, TA)
17 kind
(contain TI)
Note:
TP and TA ind. are different from CD-C75H.
TP, TA ind. can light up individually, when TP: OFF and TA: ON, it means that EON-TI can be used, in case of TP=OFF,
TA=OFF, EON-Ti can't be used.
In case of CD-C75H, (TP: OFF and TA: ON) disregard (ignore) this case, because EON-TI is nothing.
AF: Alternative Frequencycies

– 15 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
No
ASPM, summary operation
Hold down the ASPM button for 3 more second.
“ASPM” blinks in the display. Preset CH memory full over? No operate. After displayed “END”. Return to
previous station.
SD (TUNE) DET out OK? If count 1st OK? If count 2nd OK? RDS signal or not? PI—identify
Comparing PI cord same or not? between current receiving PI and before PI which is already memorized by ASPM on this time.
Comparing freg. same or not? between current receiving frequency and (already) previously memorized frequency.
Memorized to the lowest vacant preset channel.
Preset CH memory become full over?
Begin to ASPM SCAN from the next CH-SPAN again. Repeat and continue with same format ASPM operation untill 108 MHz. After reached 108 MHz, displayed the TTL quantity of memorized stations. And return to the previous receiving freq. automatically. Displayed the TTL quantity of memo- rized stations by ASPM operation on this time. And return to the previous receiving freq. automatically.
Yes
No Yes Yes Yes Yes
No
No
No
No No No Effect
Pass
No effect
Pass
No effect
Pass
No effect
Pass
No effect
Yes
No
Yes
Compare the field strength of current receiving signal. Is receiving signal stronger than signal which has same PI cord and is already memorized to preset memory ahead of this receiving time?
Yes No effect
No No effect
Comparing freg. same or not? Between current receiving frequency and (already) previously memorized frequency.
Yes Memorized to the lowest
vacant preset channel.
Yes No effect
Begin to scan start 87.50 → 108.00 MHz

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 16 –
4. No adjust type (None adjusting circuit.)
5. Added EON button.
6. Need to change RDS logo due to add EON feature.
7. Added EON—TI, EON—PTY function.
3. Summary of CD-C470H/CD-C480H RDS—EON operation
EON—PTY: Select and set the desired “PTY” → stand-by → switch to ON(other network) Station at the
start of desired PTY automatically → stay and listen to PTY of ON station → switch back to TN(This net) station
automatically at the end of PTY(ON) i.e. after changing to another PTY(except AFFAIRS) or cancelling to receive PTY of ON
station midway.
EON—TI: Select and set the “TI” → stand-by → switch to ON station at the start of traffic announcement automati
cally → stay and listen to TA of ON station → switch back to TN station autmatically at the end of TA(ON).
ie after TA(ON) is over or cancelled to receive TA of ON station midway.
When switching TN → ON station.
In case of exist 2 more stations having the desired(specified) “PTY” or “TI”, the receiver will select and switch toON station
comparing field strength at the same time. But when the frequency of ON station exists in the preset-memory, then reciver
switches straight to that ON station(CH), without comparing field strength so can make a quick switching from TN—ON sta
tion. Preset memory takes priority of switching TN—ON station.
therefore ASPM is usefull not only for PTY search but also for rapid EON switching.Anyway CD-C470H/CD-C480H’s EON is
basically stand-by and receiving method, along with the Guidelines for EON implementation.
• ASPM SCAN: 87.50MHz →108.00 MHz.
• Only RDS signal is memorized by ASPM because RDS signal has PI code and is suitable and convenient for ASPM operation.
ASPM
Comparing field strength, only one strongest RDS station is memorized of all stations (repeater relay stations) that have same
PI code.
Same PI code — freq: different
(AF’S)
PS: same
PTY: same
Each PI has AF’S list by individually.
Exa: P1 has f1, f2, f3(same PTY).
P2 has f4, f5(same PTY).
[For example] Pickup and memorized to preset CH.
f 1
f 2 f 3
P 1 (PI cord)
PS 1 (Station Name)
f 5 f 4
P 2
PS 2
f 6
f 7 f 8
P 3
PS 3
f 9 f 10
f 11 f 12 f13
P 4
PS 4
Select signals (f1, f5, f7, f10) are memorized in the preset memory by ASPM.
• If tentative - ASPM operation is repeated intententionally, never memorized (over write) at the same frequecy.
1st time ASPM → strongest stations of each pi are memorized.
ASPM is not only very usefull for PTY search, but also EON operation.
2nd time ASPM →2nd strong stations of each pi are memorized and so on.
PTY search function is equal to FM band search function as a result.
1. Introduction of RDS for CD-C470H
CD-C470H/CD-C480H RDS function is equal to adding EON feature to the current CD-C75H RDS.
EON feature is EON—PTY and EON—TI.
Although PTY and TI indicators are separated, PTY contains TI in the PTY items (software) like current PTY search items.
NEWS, AFFAIRS, INFO, ALARM, TI (TTL 17 kinds)
EON—PTY EON—TI
Can select and stand-by Can select and stand-by
EON—PTY and EON—TI are basically stand-by →receive the desired program of ON station.
2.The difference point from current CD-C75H RDS. (CD-C75H — CD-C470H/CD-C480H)
1. PTY item: added TA.TTL 18 kind.
2. Each “TP”, “TA” ind. light up or go out individually.
“TA” ind. doesn’t light up on current model, CD-C75H due to none EON—TI.
3. Added 3 indicators(in FL) due to adding EON feature.
EON: Lights up only during receiving EON data (14A).
TI: During EON-TI stand-by →Light up
During receiving ON station. →blink.
PTY: During EON-PTY stanb-by →Light up
During receiving ON station. →blink.
---
---
↑↑

– 17 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
EON summary notice for reference
1. EON-TI/PTY EON stand-by can be set, only when EON ind. lights up.
While EON ind. goes out (NO EON STATION), EON stand-by can't be set.
If the EON button is pressed, then “NO EON” is indication the display.
2. EON-TI/PTY Even if switch back ON→TN station continue to keep EON stand-by.
3. EON-TI Don’t switch TN→ON during TN broadcast TA. (same item)
4. EON-TI/PTY EON can be cancelled during receiving ON station by pressing EON button if necessary and
switch back ON → TN.
5. EON-TI/PTY EON stand-by is perfectly cancelled (cleared) by pressing EON button 2 times during stand-by or
powerOFF or Tun Up/ Down or change band or recall pre-set CH.
6. EON-TI/PTY After setting EON stand-by, stand-by items can be confirmed by pressing EON button one time.
7. EON-TI/PTY EON button function: •EON setting
•Confirm stand-by items
•Cancel (ON→TN)
•EON clear cancel (2 times)
8. EON-TI/PTY After setting EON-TI and EON-PTY stand-by, if when EON data is not transmitted, EON ind goes out
and EON stand-by is automatically cancelled display “NO EON”.
9. EON-TI EON-TI stand-by can't be set. When TP=0,TA=0(TN) even if EON ind. lights up and the EON button is
pressed then “NO TI” is indication the display.
10. EON-PTY Don’t switch TN→ON during TN broadcast same specified PTY. (same item of PTY)
11. EON-TI/PTY Switch TN→ON→TN station one cycle.
Never switch TN→ON1→ON2→Other net to other net station.
12. EON-TI/PTY After switch TN→ON station. When ON station is NO RDS, NO signal, TA=OFF or different PTY items.
The receiver switch back ON→TN displaying “NO READY”.
13. During receive ON station. when ON station become to be NO RDS, NO signal, TA=ON to OFF or
different PTY item, The receiver switch back ON→TN.
14. EON-TI/PTY Switch TN→ON in case of 2 more stations exist, comparing field strength and switch to thestrongest
station, if these signals are same strength, switch to the first previous station.
If same frequency as AF'Sexists in the preset memory, then switch TN→ON (preset memory station)
straight.
In case of exist 2 more preset memories of AF’S,then switch to the preset CH which taken in EON DATA
first, also in this case no concern to field strength.
15. Even if switch TN→ON preset memory straight, that ON station is very weak signal, then search another
AF'S (ON) station comparing field strength and switch to the strongest station as a result. Of all atations
of AF'S are very weak or no good condition, then, switch back ON→TN automatically display "NO
READY".
16. EON-TI/PTY No linkage volume, power ON/OFF, and switch function.
Traffic Programme code
(TP) Traffic Announcement code
(TA) Applications
OFF OFF This programme does notcarry traffic announcements nor does
it refer, via EON, to a programme that does.
OFF ON This programmecarries EON information about another
programme which gives traffic information.
ON OFF This programme carries traffic announcements but none are
being broadcast at present and may also carry EON information
about other traffic announcements.
ON ON A traffic announcement is being broadcast on this programme at
present.

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 18 –
SW723 REC/PAUSE ON—OFF
SW724 TUNING UP/TIME ON—OFF
SW725 VOLUME UP ON—OFF
SW726 X-BASS ON—OFF
SW727 4-SP SURROUND ON—OFF
[CD-C470H/C480H ONLY]
SW728 STOP ON—OFF
SW729 FWD ON—OFF
SW730 FF ON—OFF
SW731 MEMORY SET ON—OFF
SW732 TUNING DOWN/TIME ON—OFF
SW733 VOLUME DOWN ON—OFF
SW734 EQUALIZER/DEMO ON—OFF
SW735 3D SURROUND [CD-C480H ONLY] ON—OFF
SW736 REVERSE MODE ON—OFF
SW737 REV ON—OFF
SW738 REW ON—OFF
SW739 EDIT NORMAL ON—OFF
SW740 EDIT HIGH ON—OFF
SWM 1 T1 CrO2ON—OFF
SWM 2 T2 CrO2ON—OFF
SWM 3 REC FWD ON—OFF
SWM 4 REC RVS ON—OFF
SWM 5 F.A.S. ON—OFF
SWM 6 CAM ON—OFF
SW1 OPEN/CLOSE ON—OFF
SW2 MWCHA UP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW701 ON/STAND-BY ON—OFF
SW702 CLOCK ON—OFF
SW703 TIME/SLEEP ON—OFF
SW704 DISC 1 ON—OFF
SW705 DISC 2 ON—OFF
SW706 DISC 3 ON—OFF
SW707 DISC SKIP ON—OFF
SW708 OPEN/CLOSE ON—OFF
SW709 CD ON—OFF
SW710 TUNER/BAND ON—OFF
SW711 TAPE ON—OFF
SW712 VIDEO ON—OFF
SW713 EON [CD-C470H/C480H ONLY] ON—OFF
SW714 PTY/TI SEARCH ON—OFF
[CD-C470H/C480H ONLY]
SW715 ASPM [CD-C470H/C480H ONLY] ON—OFF
SW716 DISPLAY MODE ON—OFF
[CD-C470H/C480H ONLY]
SW717 CENTER MODE/PHANTOM ON—OFF
SW719 CENTER MODE/NORMAL ON—OFF
SW721 DOLBY PRO LOGIC/BYPASS ON—OFF
•The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
1. In the tuner section,
( ) indicates AM
< > indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
•Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
NOTES ON SCHEMATIC DIAGRAM
•Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
•Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolyticcapacitor,theexpression“capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
REF. NO DESCRIPTION POSITION POSITIONREF. NO DESCRIPTION
Figure 18 TYPES OF TRANSISTOR AND LED
ECB
(S)(G)(D)
(1) (2) (3)
FRONT
VIEW
2SA2878 A
2SK246 GR
2SC2236 Y
2SC380 O
KRC102 M
KRC104 M
KRA107 M
KRC107 M
KTA1266 GR
KTC3199 GR
KTC3203 Y
2SD2012
2SC1845 F
KTA1271 Y
KTA1273 Y
FRONT
VIEW
333GTH2
333YTH2
333YTH4
5N4GTN52
5N4YTN52
LMKD515B
BCE
(D)(G)(S)
(3) (2) (1)
FRONT
VIEW

– 19 –
CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
Figure 19 BLOCK DIAGRAM (1/3)
1
2
3
4
98
6
7
20
12
13
24 25 30
31
34
35 36
10 11
27 26 28 29
PU-IN SW
XL1
XIN
LD0
FIN2 JP–
CV+
SLC
SLI
FIN1 E F
TO
FD
SPO
SP
SLD
SL–
SL+
DRF
CL
DAT
CE
VCC1 VCC2
6
+4.9V
PICKUP IN
SW4
FOCUS COIL
TRACKING COIL
M1
SPINDLE
MOTOR
M
M
M2
SLED
MOTOR
PICKUP UNIT
9
IC2
LC78623E
SERVO/SIGNAL
CONTROL
+B4
IC5
M56748FP
DRIVER
IC1
LA9240M
SERVO AMP.
RES. CQCK. COIN SQOUT. RWC. WRQ
~
~
~
CL, DAT, SELIAL CONTROL/CE
SL+. SL–. DRF
+4.9V
62 64 56 45 3623 43
37
38 39
40 24 25
5853
10 12 20
32 40 43 44
5352515431302923271615
4144
Q1
+4.9V Q81 +7.3V (B4)
REGULATOR
TO MAIN SECTION
XOUT
EFMO EFMIN CLV+ JP–
CONT2 CONT1
27 26
SOL
SPH/L
RCHO
RVSS
LVSS
LCHO
VVDD
VDD
LVDD
RVDD
XVDD
TO MAIN SECTION
51
TR+ TR– FO– FO+ SL+ SL– SP– SP+
3222
17
CONSTANT
VOLTAGE
1
3
2
IC99
OPTICAL
FIBER DATA
LINK
+4.9V
31

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
– 20 –
Figure 20 BLOCK DIAGRAM (2/3)
17 18
15
1
10
11 24
25
26
27
28
10
9
8
8
14 34
43
22
7
75
64
65
66
14 15 16 17 1
8
37
865
40
41
33 20
48
71
8
2930
52
37
38
39
45
41
4243
2
22
23
31
49
50
51
67
68
69
70
72
76
80
24
23
15
16
13
1
17
2
3
4
14
7
34
3536
37
38
42
41
40
10
9
56
25
24
23
61
51
60
52
54
59
53
57
55
63
49 30
18
42
6
43
5
42
4
26
6448
2
15 14
20
21
23 22 13
12
45
1
3
7
6
8
14
13
19
15
10
12
16
98
18
17
7
6
20
5
21
4
4
3
23
2
24
1
17
15
14
11 12
16
18
12
10
13
6
13
10
7
21
22
23
24
20
3
2917
98
5
42
7
5
43 6
21
1
20 11
15 16
1
2
58
5761
IC453(2/2)
FUNCTION
SELECTOR
Q461
IC453(1/2)
BU4052BC
FUNCTION
SELECTOR
IC451
SRS5250S
SRS
Q4
6
Q4
5
L-OUT
R-OUT
+B3
VDD
VCC
MODE1-5
MONO
PASS
SRS STEREO
SRS MONO
MODE
R-IN
L-IN
Q4
6
Q4
6
Q4
6
Q4
6
Q4
6
R NF
L NF
R
LREC
PB MUTE
MUTING
REC MUTE
MUTING
SWITCHING
T1/T2
REC/PB
BAIS
+B2
SWM4
REC RVS
SWM3
REC FWD
SWM5
SWM6
MM1
TAPE
MOTOR
M
J501
C-OUT
ENEBLE
ENEBLE
+B3
Q83
Q84
ICT21
LC72720
VDDA VSSA
MW/LW
ANT. MW/LW
OSC.
L341
BALUN
X352
4.5MHz
IC302
TC72131
PLL(TUNER)
FM IF DET/FM MPX/AM IF
IF
OUT
IC303
LA1832
+B3 CF351 X351
+B3
MPX
PHASE
Q361
SOLENOID
F/R SPEED
RUN PULSE
DATA ENEBLE
~
~
SO301
ANTENNA
TERMINAL
AM LOOP
ANTENNA
Q129
Q130 BEAT CUT
BAIS
BEAT CUT
R-OUT L-OUT
C-I
S-IN
+B3
SRS BALANCE 4CH SP
MAIN STB
CLEAR
MAIN SI
MAIN SO
MAIN SCK
SM
TUNER MUTE
SD
VOLTAGE
REGURATER
+B3
+5V
QT21
VP
VF2
(AC)
FL701
IC601
IX0171AW
MICROCOMPUTER
+B1
R-MUTE C-MUTE S-MUTE POWER
CAM SW
CLK
CAM SW
TA MOT SW
REC/PB
F.A.S
REC FWD
REC RVS
PB MUTE
T1/T2
BIAS
HI SPEED
REC MUTE
R-IN
L-IN
S-OUT
R-MIX OUT
L-MIX OUT
+B3
A-GND
IC202
LV1016
D-GND
VREF
S-IN
R-IN
L-IN
VCC
CL
DI
VREF BUFFER S-OUT R-OUT L-OUT VCC
DI
CL
IC201
LA2786
VDD
VSS
CL
CE
DI
DRIVER
RUN PULSE
SOLM1
+B2
SOLENOID
SOLENOID QM03
PHM1
FAS SW
CAM SW F.A.S
REC RVS
REC FWD
SWM2
T2 CrO
2
SWM1
T1 CrO 2
T2 CrO 2
T1 CrO 2
MOTOR
DRIVER
DRIVER
DRIVER
QM02 TA MOT SW
HI SPEED
TA MOT H/L
QM05
+B2
QM04QM01
SWITCHING
SWITCHING
Q119
Q115
Q116
HI SPEED
Q117
Q118
Q121
Q122
L
R
VIDEO2VIDEO1
RL
IN
RL
L
R
R
L
L
R
R
L
FRONT
IN
CENTER
REAR
IN
X-BASS
RTINLTIN
VSSD
VDDD
X IN
X OUT
MPX IN
AMP.
FM +B
DO
CL
DI
CE
XT21
4.332MHz
XT21
VT
T305
T306
T301
T302
CF302
P.B
+B7
REF
T1/T2
NOR/
HIGH
ALC
REC
P.B.
PLAYBACK&RECORD AMP.
IC101
AN7345K
R REC
L REC
POP REDUCE
R
L
R NF
R(T2)
L(T2)
R(T1)
L(T1)
L NF
Q124 Q126
SWITCHINGSWITCHING
DO
CE
CLDI
CF301
FM FRONT END
FE301
Q360
MUTING
MPX
VCO
CUT
RL
Q353
Q354
MPX
IN
FM/AM
OUT
IF IN
SD
FM MONO/ST MONO/ST
AM RF IN
AFC
IN
OUT
VR351
FM MUTE LEVEL AM OSC
REG INOUT VCC
FM IF IN
AMP
FM IF
Q301
FM IF
FM OSC.
STEREO
AM IN
FM IN
FMOSC
T351
AM IF
GND
OSC.
FM
FM IF
AM RF
CD MUTE
FROM CD UNIT
IC501
LC75396E
AUDIO PROCESSOR
TAPE 1
TAPE 2
CD-C480H
ONLY
CD-C480H
ONLY
Q128
L103
Q111
Q107
Q108
Q110
Q109
Q103,Q104
Q105,Q106
REC/PBREC
P.B
AC BIAS
P.B
REC/PB
HEAD
L-CH
R-CH
PB HEAD
L-CH
R-CH
ERASE
HEAD
AUX
AUX
TUNER
TAPE
CD
V
O
V
O
T1/T2 H/N
RRRLLL
GRAPHIC EQUALIZER
47
56
T2 CrO 2
T1 CrO 2