Sharp CPC-470-E Service manual

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

SERVICE MANUAL

CD-C470H
CD-C470E
CD-C480H

No. S6738CDC470HE

Illustration: CD-C470H/CP-C470H

CP-C470H
CP-C470E
CP-C480H

Manufactured under license from Dolby Laboratories Licens­ing Corporation. DOLBY, the double-D symbol and
"PRO LOGIC" are trademarks of Dolby Laboratories Licens­ing 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.

CONTENTS

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, 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.

Page

SHARP CORPORATION

– 1 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

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.

(CD-C470H/CD-C480H)

LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

(CD-C470E)

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.

IMPORTANT SERVICE NOTES (CD-C470E 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.

– 2 –

AC

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.

WITHSTANDING
VOLTAGE TESTER

CHASSIS
SCREW

+

OUT

-

SHORT-CIRCUIT
AC POWER
SUPPLY CORD

PROBE

UNIT

CONNECT THE PROBE
TO GND TERMINAL
OF PHONO TERMINAL

SCREW

OF CHASSIS

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.

CD-C470H/CD-C470E/CD-C480H

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

SPECIFICATIONS

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

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)

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

CP-C470H/CP-C470E/CP-C480H

Type: 3-way type [130 mm (5-1/8") woofer,
Maximum input power: 50 W

Impedance: 8 ohms
Dimensions: Width; 200 mm (7-7/8")

Weight: 2.7 kg (6.0 lbs.)/each

CENTER SPEAKER SYSTEM

Type: 100 mm (4") full-range speaker
Maximum input power: 20 W
Impedance: 6 ohms
Dimensions: Width; 262 mm (10-5/16")

Weight: 1.4 kg (3.1 lbs.)/each

SURROUND SPEAKER SYSTEM

Type: 100 mm (4") full-range speaker
Maximum input power: 10 W
Impedance: 12 ohms
Dimensions: Width; 170 mm (6-3/4")

Weight: 0.7 kg (1.5 lbs.)/each

Specifications for this model are subject to change without
prior notice.

50 - 15,000 Hz (CrO

50 dB (TAPE 2, recording/playback)

TAPE-2: Record/playback x 1

Erase x 1

50 mm (2") tweeter and super tweeter]

Height; 300 mm (11-13/16")
Depth; 252 mm (9-15/16")

Height; 145 mm (5-3/4")
Depth; 201 mm (7-15/16")

Height; 122 mm (4-13/16")
Depth; 176 mm (6-15/16")

tape)

2

– 3 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

NAMES OF PARTS

CD-C470H/CD-C470E/CD-C480H

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

5

1234

67

89

123

RDS

EONTAPTY

10 11

12

TP
TI

13
14

15

16 17

18

19
20

21

PRO LOGIC

X-BASS

kHz
MHz

MEMORY

SLEEP4-SPST

REC

63 250 1k 4k 16k

22

23

2425

26 27

28

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

34

35
36

37

38
39

29 30

41

40

46
47

48

49

55 56

45

50

3132

42

43

51

33

44

54
53

52

55. (TAPE 1) Cassette Compartment

56. (TAPE 2) Cassette Compartment

(Illustration: CD-C480H)

– 4 –

CD-C470H/CD-C470E/CD-C480H

14

15

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

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

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

1

4

2

5

3

6

7

8

9

10

11

13

12

CD-C470H/CD-C470E/CD-C480H

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:

2
3

4
5

6

7
8

13

14 15 1617 18

21

20
26
27

28
29

30

1

22

16
17

9
10

11
12

19

23

24
25

31

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:

– 5 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

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 disp lay will appe ar.

(AM 12:00 - PM 11:59)

"AM 0:00" → The 12-hou r display will app ear.

(AM 0:00 - PM 11:59)

"0:00" → Th e 24-hour di splay will appe ar.

(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 ( o r ) 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.

1 Press the ON/STAND-BY switch to enter the stand-by mode.

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.

OPERATION MANUAL

– 6 –

( 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 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

LOCK
LEVER

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. Take off nylon bands or wire holders where they need be
removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.

4. Take suffcient care on static electricity of integrated
circuits and other circuits when servicing.

CD-C470H/CD-C470E/CD-C480H

STEP REMOVAL

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

4 Tuner PWB 1. Screw ..................... (D1) x4 7-2

5 Back Board 1. Screw ..................... (E1) x7 7-2

6 Main PWB 1. Screw ..................... (F1) x1 8-1

7

Headphones PWB

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

11

Power Amp. PWB

12 Turntable 1. Screw ..................... (M1) x1 8-4

13 Disc Tray 1. Screw ..................... (N1) x2 8-4

14 CD Changer 1. Screw ..................... (P1) x4 8-5

Mechanism

15 CD Mechanism 1. Screw ..................... (Q1) x1 8-5

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.

PROCEDURE

the CD cover, and close.
(Note 1)

2. Hook....................... (C1) x3

3. Hook....................... (C2) x2

4. Screw ..................... (C3) x1

5. Socket .................... (C4) x4

2. Screw ..................... (D2) x1

3. Socket .................... (D3) x1

2. Holder .................... (F2) x2

3. Flat Wire................. (F3) x4

4. Socket .................... (F4) x3

1. Screw ..................... (G1) x1 8-1

2. Screw...................... (K1) x6

1. Screw ..................... (L1) x4 8-3

2. Cover ..................... (M2) x1

2. Guide ..................... (N2) x2

FIGURE

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

CD-C470H/CD-C470E/CD-C480H

Figure 7-1

Figure 7-2

< A >

Figure 7-3

– 7 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

( M1 ) x1
ø3 x10mm

( M1 ) x1
ø3 x10mm

( L1 ) x1
ø3 x10mm

Turntable

Disc Tray

( L2 ) x1

( M2 ) x1

( M2 ) x1

CD Player Unit

Headphon
PWB

( G1 ) x1
ø3 x11mm

( F3 ) x1

( J1 ) x3
ø3 x10mm

( F4 ) x3

Main PWB

Push

Figure 8-1

Switch PWB

( F3 ) x2

Front Panel

Push

( H1 ) x2
ø3 x8mm

Front Panel

( F2 ) x2

( F3 ) x1

( F1 ) x1
ø3 x10mm

Tape
Mechanism

Figure 8-4

( J2 ) x11
ø3 x10mm

( K1 ) x6
ø3 x10mm

Tape
Mechanism

Figure 8-2

Power Supply PWB

Cassette
Holder
(Left/Right)

( L1 ) x4
ø3 x10mm

Display
PWB

Open

( N1 ) x4

ø3 x14mm
( P1 ) x1
ø2.6 x10mm

Shift Lever

CD Changer
Mechanism

CD Player Base

Care when installing the CD changer mechanism.
Install the CD changer mechanism on the CD player base after
the shift lever has been set in the highest position.

Figure 8-5

CD Mechanism

Power Amp.
PWB

Figure 8-3

– 8 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

(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

STEP

REMOVAL PROCEDURE FIGURE

1 Front Speaker 1. Net........................... (A1) x1 9-1

(Left/Right) 2. Front Panel ............. (A2) x1

3. Screw ...................... (A3) x6

SURROUND SPEAKER SYSTEM

STEP

REMOVAL PROCEDURE FIGURE

1 Top Cabinet 1. Screw ...................... (B1) x6 9-2

CENTER SPEAKER SYSTEM

STEP

REMOVAL PROCEDURE FIGURE

1 Top Cabinet 1. Screw ...................... (C1) x9 9-3

CP-C470H/CP-C470E/CP-C480H

Tweeter

( A3 ) x2
ø4 x16mm

Super Tweeter

Net
( A1 ) x1

SURROUND SPEAKER SYSTEM

Figure 9-2

CENTER SPEAKER SYSTEM

Front Pael
( A2 ) x1

( A3 ) x4
ø4 x16mm

Figure 9-1

Woofer

Screwdriver

Figure 9-3

– 9 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

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.

Turntable Up/Down Motor

( A1 ) x2
ø2 x5mm

Figure 10-1

How to remove the pickup (See Fig. 10-2)

1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2).

2. Remove the stop washer (B3) x 1 pc., to remove the gear
(B4).

3. Remove the pickup.

( B1 ) x2

2.6 x6mm

Shaft
( B2 ) x1

Stop Washer
( B3 ) x1

Pickup

CD Mechanism
Gear
( B4 ) x1

Figure 10-2

– 10 –

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter

Play: TW-2412 Tape 1: Over 80 g

• Torque Check

Torque Meter

Tape 1

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

• Tape Speed

Test Tape

Normal MTT-111 VRM1 3,000 ± Speaker
speed 30 Hz terminal

Adjusting

Point

TAPE
SPEED

VRM1

TAPE MECHANISM PWB

Specified Value

Tape 2: Over 80 g

Specified Value

Specified

Value

Tape 2

Instrument

Connection

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

TUNER SECTION

fL: Low-range frequency

fH: High-renge frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Display

Frequency

Display

Adjusting

Parts

Setting/

Adjusting

Parts

Connection

Terminal

Instrument

Connection

Instrument

Test Stage Frequency

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

*1. Input: Antenna, Output: TP302
*2. Input: Antenna, Output: TP301

• 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

• FM Mute Level

Signal generator: 1 kHz, 40 kHz dev., FM modulated

Frequency

98.00 MHz 98.00 MHz VR351* Input: Antenna
(25 dBµV) Output: Speaker

Frequency

R357

TP302

T351

AM IF

TUNER PWB

VR351

FM MUTE
LEVEL

T306

MW BAND
COVERAGE

T305 T302 T301

LW BAND
COVERAGE

FE301

MW
TRACKING

Figure 11-1 ADJUSTMENT POINTS

– 11 –

TP301

SO301
ANTENNA
TERMINAL

CNP301

LW
TRACKING

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

2

1

10ms

0.50 V
IC1 20 FE

10ms

0.50 V
IC1 7 TE

Enlarged
View

TRACKING
OFF-SET
ADJUST

TEST MODE

• 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 (

<MEMORY>
LASER ON

<MEMORY>
Tracking on the spot.
SERVO OFF PLAY

) or ( ) key.

<MEMORY>

Tracking on the spot.
SERVO ON PLAY

IL is not performed.

<STOP>

STOP

<PLAY> key input Press <STOP> key.

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

Stop

<Disc Number 3> key: Track 15

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

Figure 12-1

CD SECTION

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.

0.1s

0.50 V
IC1 20 FE

FOCUS
OFF-SET
ADJUST

0.1s

0.50 V
IC1 7 TE

TRACKING
OFF-SET
ADJUST

1
2

Figure 12-2

TRACKING/
ERROR
BARANCE

1

ADJUST

2

– 12 –

200 ms
1V/diV
IC 1 15

200 ms
1V/diV
IC 1 7

TO

TE

Figure 12-4

Figure 12-3

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

EXPLANATION OF DOLBY SURROUND PRO LOGIC AND EVALUATION METHOD

Outline

• Namely, two speakers are connected in parallel to one
amplifier.

• In the Pro Logic BYPASS mode the amplifier for C-ch (center

channel) and the amplifier for S-ch (surround channel) are in
MUTE state. The SP output is cut.

• State of element output and terminal output in specific mode

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)

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←

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

SP out L-ch Almost no output (only omitting component)
(SO901) R-ch Almost no output (only omitting component)

(SO903) SP out C-ch
(SO902) SP out S-ch

Input signal is output.
Almost no output (only omitting component)

• 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.

• In the Phantom mode of Pro Logic ON mode the amplifier 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

Output point Phantom mode

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)

(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
(SO901) R-ch

(SO903) SP out C-ch
(SO902) SP out S-ch Input signal is output.

Output point Phantom mode

SP out L-ch
(SO901) R-ch

(SO903) SP out C-ch SP cut, no output
(SO902) SP out S-ch Input signal is output.

Almost no output (only omitting component)
Almost no output (only omitting component)

Almost no output (only omitting component)

Almost no output (only omitting component)
Almost no output (only omitting component)

• Accordingly, if you want to output signal waveform to C-ch SP
out, give the same phase input into L-ch/R-ch INPUT in the
Pro Logic Normal mode.

If one of channels receives input, C-ch does not output. Only

L-ch or R-ch outputs.

• If you want to output signal waveform to S-ch SP out, you can
use either Normal mode or Phantom mode. However, 180°
reverse phase input must be given to L-ch/R-ch INPUT.

– 13 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H
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

Lights up when RDS with EON station is received.

Lights up when RDS station is received.

DISPLAY

RDS
EON

8 character can display E1 table of EBU.
Same as CD-C75H.

TA
PTY

TP

Lights up when TA station is received.
Lights up when TP station is received.

TI

Lights up when stand-by mode and blinks during staying other network
station.

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

ASPM DISPLAY PTY•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

SEARCH
SET

PTY•TI
SELECT

PTY and TI items can be
selected when use PTY search
or EON STAND-BY

EON

17 kind
(contain TI)

Can use for

• EON setting

• confirm stand-by item

• cancel (ON→TN)

• EON clear cancel

18 kind
(contain TP, TA)

– 14 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

Yes

Displayed the TTL quantity of memo-

rized stations by ASPM operation on

this time. And return to the previous

receiving freq. automatically.

No

Begin to ASPM SCAN from the next

No effect

Pass

CH-SPAN again.

Preset CH memory become full over?

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

Pass

No effect

No effect

Pass

freq. automatically.

Pass

No effect

Effect

Memorized to the lowest

vacant preset channel.

No effectNoNo effect

No

No effect

Memorized to the lowest

vacant preset channel.

No

Yes

No operate. After displayed “END”. Return to

previous station.

Yes

No

Hold down the ASPM button for 3 more second.

ASPM, summary operation

“ASPM” blinks in the display.

Preset CH memory full over?

Begin to scan start 87.50 → 108.00 MHz

No

SD (TUNE) DET out OK?

No

Yes

If count 1st OK?

No

Yes

If count 2nd OK?

Comparing freg. same or not?

between current receiving frequency

and (already) previously memorized

frequency.

No

Yes

RDS signal or not? PI—identify

No

Yes

Comparing PI cord same or not?

between current receiving PI and

before PI which is already memorized

by ASPM on this time.

Yes

Comparing freg. same or not?

Between current receiving frequency

and (already) previously memorized

frequency.

Yes

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?

– 15 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

• 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.

Each PI has AF’S list by individually.

Same PI code — freq: different

(AF’S)
PS: same
PTY: same

[For example] Pickup and memorized to preset CH.

f 1
f 2 f 3

P 1 (PI cord)
PS 1 (Station Name)

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.

f 5 f 4

P 2
PS 2

Exa: P1 has f1, f2, f3 (same PTY).
P2 has f4, f5 (same PTY).

---

f 6
f 7 f 8

P 3
PS 3

---

f 9 f 10
f 11 f 12 f13

P 4
PS 4

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.

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.

↑

– 16 –

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

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

8. EON-TI/PTY After setting EON-TI and EON-PTY stand-by, if when EON data is not transmitted, EON ind goes out

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

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.

12. EON-TI/PTY After switch TN→ON station. When ON station is NO RDS, NO signal, TA=OFF or different PTY items.

13. During receive ON station. when ON station become to be NO RDS, NO signal, TA=ON to OFF or

14. EON-TI/PTY Switch TN→ON in case of 2 more stations exist, comparing field strength and switch to thestrongest

15. Even if switch TN→ON preset memory straight, that ON station is very weak signal, then search another

16. EON-TI/PTY No linkage volume, power ON/OFF, and switch function.

EON can be cancelled during receiving ON station by pressing EON button if necessary and
switch back ON→TN.

•Confirm stand-by items

•Cancel (ON→TN)

•EON clear cancel (2 times)
and EON stand-by is automatically cancelled display “NO EON”.
pressed then “NO TI” is indication the display.

Never switch TN→ON1→ON2→ Other net to other net station.
The receiver switch back ON→TN displaying “NO READY”.
different PTY item, The receiver switch back ON→TN.
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.

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".

Traffic Programme code

(TP)

OFF OFF This programme does notcarry traffic announcements nor does

OFF ON This programmecarries EON information about another

ON OFF This programme carries traffic announcements but none are

ON ON A traffic announcement is being broadcast on this programme at

Traffic Announcement code

(TA)

Applications

it refer, via EON, to a programme that does.

programme which gives traffic information.

being broadcast at present and may also carry EON information
about other traffic announcements.

present.

– 17 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

FRONT
VIEW

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
electrolytic capacitor, the expression “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

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 chas­sis 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.

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
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 CrO2 ON—OFF
SWM 2 T2 CrO2 ON—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

[CD-C480H ONLY]

ON—OFF

FRONT

ECB
(S)(G)(D)
(1) (2) (3)

VIEW

2SA2878 A
2SK246 GR
2SC2236 Y
2SC380 O
KRC102 M
KRC104 M
KRA107 M
KRC107 M
KTA1266 GR
KTC3199 GR
KTC3203 Y

Figure 18 TYPES OF TRANSISTOR AND LED

FRONT

VIEW

BCE
(D)(G)(S)
(3) (2) (1)

– 18 –

2SD2012
2SC1845 F
KTA1271 Y
KTA1273 Y

333GTH2
333YTH2
333YTH4
5N4GTN52
5N4YTN52
LMKD515B

1

2

3

4

98

6

7

20

12

13

242530

31

34

35

36

10 11

272628

29

PU-IN SW

XL1

XIN

LD0

FIN2

JP–

CV+

SLC

SLI

FIN1EF

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

101220

324043

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

Figure 19 BLOCK DIAGRAM (1/3)

– 19 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

8

6

5

6

6
6

6
6

MAIN STB

O

O

SO301

ANTENNA

TERMINAL

AM LOOP

ANTENNA

L341

BALUN

T301
T302

8

2

AM RF
MW/LW

ANT.

FM FRONT END

FE301

6

7

MW/LW

3

FM

OSC.

OSC.

T305
T306

FM IF

AMP

FM IF
CF301

1

5

4

Q301

FM IF

CF302

FM IF IN

VT

VR351

FM MUTE LEVEL

FMOSC

+B3 CF351 X351

AM IF

T351

3

1

REG INOUT VCC

IC303

LA1832

AM OSC

24

22

21

23

AM RF IN

OUT

IN

AFC

+B3

42

98

5

GND

FM IF DET/FM MPX/AM IF

IF

OUT

7

STEREO

13

MONO/ST

11

6

MPX

SD

PHASE

Q361

SM

AMP.

QT21

2917

20

16

18

MPX

FM/AM

IN

OUT

12

14

15

RL

MUTING

Q353

MPX
VCO

Q354

CUT

TUNER MUTE

VF2
(AC)

40

41

FL701

37

~

8

6

5

VP

SD

23 22

MPX

2

CE

IN

43

VOLTAGE

REGURATER

FM MONO/ST

10

6

5

CL

DO

+B3

33

IF IN

+5V

121013

17

7

21

REC MUTE
HI SPEED

BEAT CUT
BIAS
T1/T2
PB MUTE
REC RVS
REC FWD

TA MOT SW
SOLENOID
F/R SPEED

CAM SW
RUN PULSE
F.A.S
REC/PB
T1 CrO

2

T2 CrO

2

204871

80

76
75
72
70
69
68
67

51
50
49

31
23
22

2

56
47

4243

41

DATA

ENEBLE

CLK

XT21

X352

+B3

FM +B

Q360

21

20

DI

CL

DO

ICT21

LC72720

VDDA

VSSA

20

1

OSC.

FM

7

14

13

15

VSSD

VDDD

12

4.5MHz

22

X IN

X OUT

FM IN

AM IN

11

15 16

IC302

TC72131

PLL(TUNER)

43

CE

DI

XT21

4.332MHz

+B1

52

2930

8

IC601

IX0171AW

MICROCOMPUTER

373839

45

R-MUTE

C-MUTE

S-MUTE

POWER

14

16

1

15

17

CLEAR

MAIN SI

MAIN SO

MAIN SCK

SRS

BALANCE

4CH SP

646566

5761

~

FROM CD UNIT

MM1

TAPE

MOTOR

REC FWD

SWM3

REC RVS

SWM4

CAM SW

SWM6

FAS SW

SWM5

PHM1

SOLENOID

SOLM1

T1 CrO

SWM1

T2 CrO

SWM2

PB HEAD

TAPE 1

TAPE 2

M

2

2

L-CH

R-CH

REC/PB

HEAD

L-CH
R-CH

ERASE

HEAD

MOTOR
DRIVER

DRIVER

P.B

+B2

QM02

+B2

AC BIAS

DRIVER

QM05

DRIVER

P.B

REC/PBREC

Q103,Q104
Q105,Q106

Q109

Q110

CD-C480H
ONLY

Q83
Q84

TA MOT SW

SWITCHING

HI SPEED

QM04QM01

TA MOT H/L

REC FWD

REC RVS

CAM SW

F.A.S

+B2

QM03

Q107
Q108

Q111

POP REDUCE

RUN PULSE

SOLENOID

T1 CrO

2

T2 CrO

PLAYBACK&RECORD AMP.

L(T1)

R(T1)

L(T2)

R(T2)

L NF
R NF

L REC

R REC

REF

+B7

Q128
L103

Q129
Q130

IC101

AN7345K

1

24

2

23

3
4

T1/T2

6

REC

9

16
14
13

NOR/
HIGH

12

15

2

P.B.

H/N

T1/T2

P.B

L

4

21

R

5

20

L

7

18

R

8

17

ALC

10

19

L NF
R NF

REC

Figure 20 BLOCK DIAGRAM (2/3)

– 20 –

CD MUTE

HI SPEED

PB MUTE

Q117
Q118

MUTING

REC MUTE

Q121
Q122

MUTING

SWITCHING

Q115
Q116

Q119

SWITCHING

T1/T2

REC/PB

SWITCHINGSWITCHING

BAIS

Q124 Q126

BEAT CUT

BAIS

CD

TAPE

TUNER

AUX

RL

AUX

J501

+B3

42
41
40

2
3
4
1

CL

L

55
57

R
L

53
59

R
L

54
58

R
L

52
60

R
L

51
61

R

RL

VIDEO2VIDEO1

CL
DI
ENEBLE

DI
CL
ENEBLE
D-GND

23

CD-C480H
ONLY

DI

CE

+B3

34

252423

FRONT

56

VDD

IN

6448

63

49

RTINLTIN

L-OUT

14

IC501

LC75396E

AUDIO PROCESSOR

GRAPHIC EQUALIZER

VSS

26

4

42

5

RRRLLL

R-OUT

X-BASS

V

V

CENTER

REAR

IN

30

18

42

43

6

C-I

S-IN

IN

9

IC201

LA2786

VCC

38

37

7

VCC

IC202

LV1016

A-GND

24

17

Q461

+B3

IC453(1/2)
BU4052BC
FUNCTION
SELECTOR

L-OUT

988

L-IN

1

15

S-OUT

R-OUT

3536

10

R-IN

11

S-IN

VCC
VDD

VREF

BUFFER

14

VREF

SRS5250S

10

34

16
15

13

18

17

IC451

SRS

24

25

IC453(2/2)

FUNCTION

SELECTOR

C-OUT

L-MIX OUT
R-MIX OUT
S-OUT

R-OUT
L-OUT

L-IN

R-IN

MODE

SRS STEREO

SRS MONO

MODE1-5

MONO

27

28

26

PASS

Q4
Q4

Q4
Q4

Q4

Q4

Q4

R-IN

L-IN

10

FL701

37

~

8

+B1

14

IC601

IX0171AW

ROCOMPUTER

5761

~

6

5

16

15

MAIN SO

MAIN SCK

4CH SP

VP

18

17

CLEAR

MAIN SI

MAIN STB

SRS

BALANCE

646566

63

Q701

10
11
12
13
19
21
53
54
55

24
25
26
27
28

DOLBY P.L

7

4
5
6
7
9

21

VF1

(AC)

CD O/C SW

CD D.NO

SPE1-5

+B1

CD SL–
CD SL+

CD CQCK

CD COIN

CD SQOUT

CD WRQ
CD RWC
CD PUIN

CD DRF

CD U/D

CD MUTE

CD RES

IC502/503/504

1
4
7

–B1

OPE AMP.

BA4558

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

1413

5

71

VP

7
6
4

~~~

1

80

72

70

54

OPE AMP.

BA4558

IC504(1/2)

2
8

7

6

1615

MAIN SI

MAIN STB

MAIN SCK

52

30

29

8

+B5

+B6

21 22

19

18

CLEAR

TUN SD

IC701

IX0170AW

31

20

SPE IN

TUN SM

TUN MUTE

DI

CE

12

1011

+B1

+B3

CLK

DO

35

9

MAIN SO

MICROCOMPUTER

3348

MEMORY
BACK UP

8

6

34

CD MUTE

KEY5

KEY0

S-MUTE

POWER

42

43 47

23

~

~

28

37
38
36

17

46

REMOCON

RESET

SYS STOP

REMOCON

Q704

DATA

CLOCK

LCK

REMOTE
SENSOR

CD LD H/L

CD LD M+
CD LD M–

SOL

2
3
4

RX701

1

Q93 Q91

SWITCHING

KEY MATRIX

SW701~SW717
SW719,SW721
SW723~SW726
SW728~SW734
SW736~SW740

INPUT/OUTPUT

EXPANDER

IC702

BU2092F

VSS

VDD

18

17

1

+B5

Q705
Q706
ZD701

+B5

32

DRIVER

Q94

8

9

LOADING MOTOR

1

+B2

+B4

IC91

DRIVER

5

SOLM2
SOLENOID

16

~

5

CD O/C SW

CD D.NO

CD U/D

+B4

2

6

3
7

LED701~LED712
LED714~LED719

SW1
OPEN/CLOSE

SW3
DISC NO

SW2
MEHCA UP

UP/DOWN

M

M3
T/T

34

14

501

396E

OCESSOR

RAPHIC EQUALIZER

43

42

5

RRRLL

X-BASS

C-OUT

34

L-MIX OUT

16
15

R-MIX OUT
S-OUT

13

R-OUT
L-OUT

18

17

51

L-IN

R-IN

250S

S

MODE

24

25

PASS

SRS STEREO

SRS MONO

MODE1-5

MONO

53(2/2)

CTION

ECTOR

TO CD UNIT

Q829

POWER

POWER ON/STB
SWITCHING

REAR-IN

CENTER

IN

F951

T1.6A

L 250V

Q951

Q901

L-IN
R-IN

13

IC951

9

LA4451
POWER AMP.

+B1

7

–B1

11

4

3

1

IC901

18

STK48801
POWER AMP.

+B1

–B1

11

14

9

D802~D805

CENTER

+

SO903
CENTER

GND

–

+
–

–

+

+
–

–

+

SPEAKER
TERMINAL

L-CH
GND

SO902
REAR

GND

SPEAKER
TERMINAL

R-CH

JA901
HEADPHONES

L-CH

SO901

GND

FRONT
SPEAKER

GND

TERMINAL

R-CH

AC POWER
SUPPLY CORD
AC 230V 50Hz

REAR-OUT

2
5

16

D801

CENTER-OUT

L-OUT

10

13

R-OUT

VOLTAGE

REGULATOR

(AC)

F901

T2.5A

L 250V

F902

T2.5A

L 250V

F802
T4A

L 250V

F803
T4A

L 250V

F804

(AC)

T1.6A
L 250V

T.F

T801

POWER

TRANSFORMER

VF2

Q801

VP

VF1

12

6

3

R-MUTE

REGURATER

REGULATOR

SWITCHING

VOLTAGE

REGULATOR

VOLTAGE

VOLTAGE

Q826
Q827

Q823
Q824

Q825

Q821
Q822

Q501
Q502

S-MUTE

Q504 Q503

–B1

IN

L

R

3
5

REGULATOR

+B2

+B3

+B4

C-MUTE

OPE AMP.
IC651

+B3

BA4558

OUT

8

1

7

4

VOLTAGE

Q828

+12V(MOTOR)

+12V(ANALOG)

+7.3V(CD)

L
R

–15V

VOLTAGE

REGULATOR

REAR
OUT

LEVEL
CONT

SRS

PASS

SRS

PASS/

3D

SRS A/
SRS B

SRS INH

20
28

R

17
31

L

+B1

CENTER
OUT

+5V
UN-SWITCHED

TO CD UNIT

VOLUME

VOLUME

CENTER

REAR

IN

30

18

42

6

C-IN

S-IN

Q468
Q469

27

Q466

28

Q467

26

Q463

Q458~

Q460

Figure 21 BLOCK DIAGRAM (3/3)

– 21 –

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

8
K

0

C
2

A

R1
1K

C2

C1

47/16

0.01

B

F
B
K
E
K

CNS1B

1
2
3
4
5

CNS1A

1
2
3
4
5

CNP1

1
2
3
4
5

K
A
B
E
F

C

1/16

LD

MON

K
E
B

LD GND
A
F

2200P

C

D

LT0H30M1

ACTUATOR

E

1M

2200P

1M

TR+
FO+

FO–
TR–

PICKUP UNIT

F

M1

DISC

M

G

M2

SLIDE

M

SW4

PICKUP

IN

CD MOTOR PWB-E

5
4
3
2
1

1
2
3
4
5
6
7
8

TR–
TR+
FO+
FO–

GND

PD
VR
LD

K
E
A
B
F

T–
T+

F+
F–
GND
+5V
VR
LD

470H/480H:27K
470E:1K

CNS2B

CNS2A

11
2

2

3

3

4

4

GND

5

5

6

6

7

7

8

8

CNP3A

CNS3B

6

6

5

5

4

4

3

3

2

2

1

1

TR–
TR+
FO+
FO–

PD
VR
LD

CNS3A

6
5
4
3
2
1

CNP2

1
2
3
4
5
6
7
8

CNP3

6
5
4
3
2
1

PD

LD

CD_GND

C25

0.01

TR–
TR+
FO+
FO–

KTA1266 GR

+B

C3

0.1/50

C4

0.001

R4

2.2K
R5

6.8K

R6

100

R7

C9

1K

0.047

R9

3.3K

R40

22K

C11

0.1

SP+
SP–
SL_+
SL_–
CD_PUIN

100K

TE

R11

R28
1K

R39
22K

+B

R2

0.033

Q1

C5

R8

12K

100/16

R3

15K

C6

0.033

C10

180P

R29
1K

C44

R43

C7

0.1/50
C8

0.068

+B

R13
33K

C13

22

0.1

10

11
12

13
14
15
16

VREF

+B

C24

FIN2

1

REF

FIN1

2

REF

E

3

F

4

TB

5

TE–

6

TE

7

TESI

8
9

SCI

TH

TD–

TD
JP

+

TO

FD

R12
15K

1
2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18

C39

C40

0.33/50

1/50

560

R42

6463626160

VCC1

–

+

–

+

REF

REF

REF

–

FD–

PHI

BHI

LDS

LDO

–

+

RF

FE1

–

+

REF

VCR

–

VCR

+

–

VCR

+

–

+

+

REF

–

GEN

REF

+–
–

REF

+
–

+

JP

+

FOSTA

REF

GEN

–

TO

+

GEN

–

+

REF

–

REF

+

–

FA

FA–

FE

20

19

18

17

C12

330P

R17

R14

10K

C14

0.01
R16

R15

1.5K

47K

IC5

M56748FP

SLIDE DRIVER

FOCUS/TRACKING/SPIN/

C38

0.47/50

VCR

THDL

FSC

REF

FE–

82K

0.01

595857

REF

TGL1

REF

–

+

SP

AGND

232221

36
35
34
33
32
31
30
29
28
27
26
25
24
23

R31

22

10K

21
20
19

C37

C35

0.1/50

220/10

VR

LF2

REF1

+
–

+
–

DEF

–
+

HFL

+
–

DRF

IC1

LA9240M

SERVO AMP.

VCC

+

–

REF

+

–

REF

GL

THD

FSTA

REF

S.Q.R

REF

–

+

FE1

+

–

REF

SP–

SPI

SPG

262524

C16

C15

0.0047

R21 56K

R20 10K

R19

R23

1.2K

0.47/50

R22

C17

39K

5554535251

56

FSS

VCC2

+

–

+

JP

–

REF

SLEO

SPO

28

27

0.001

6.8K

+B

EFBAL

FOSTA
TOSTA

2FREQ
LASER

FSTA
8/12CM

SLOF

C19
R25

DRF

CE

CV–

CV+

JP–

JP+
JPCLO

REF

47/16

1.2K

+B

50

49

CL

DAT

CLK

FSC

REF

CE
CL

LATOH

REF

RF

SLOF

SLOF

OR

SLOF

+
–

+
–

SL–

SLD

29

C18

1/50

10K

R24

C20

0.0033

R30

22K

R41

4.7K

NC

48

C45

DEF

TBC

DGND

SLI

–

+

SLC

RFS–

–

+

RFSM

CV+
CV–

SLOF

HFL
TES

TOFF

TGL
JP+

SL+

JP–

323130

R27

220K

R26

220K

4.7/50

C50

HF

0.001

R33

5.6K

TP1

C30

2.2P

GND

+B

D6
RL104A

C34

0.033

R36
47K

C32
27P

R32
56K

R35
470

D5
RL104A

0.1

R34

1K

C21
1/50

1SS133

D7

RL104A

R3

33

R37
47K

C31

0.0

CD_GND

D2

47

46
45
44

C33

43

42

41

40
39
38
37
36
35
34
33

R10

82K

+B

C46

0.022

CD_PUIN

CD_SL–

CD_SL+

192021

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.

1

23456

Figure 22 SCHEMATIC DIAGRAM (1/14)

– 22 –

B

C50

0.1

4

33

R34

1K

C21
1/50

1SS133

D7

RL104A

A

A

IN

R38

33K

R37
47K

C31

0.0027

CD_GND

D2

C46

0.022

CD_SL–

CD_SL+

192021

C53
220P

C90

0.01

R49
10K

CD_SQIN

CD_DRF

TO MAIN SECTION

P26 1-B

CD_RWC

CD_CQCK

CD_COOUT

CD_RES

CD_WRQ

12131415161718

+B

R18

3.3M

C41

0.047

+B

R56

1.2K

+B

R77 1K
R46 1K
R47 1K

R45 1K
R78 1K
R48 1K

C22

0.01

646362616059585756555453525150

TEST1

DEF1

1

TA1

2

PDO

3
R58
680

VVSS

4

ISET

5

C42

0.047
R57

27K

VVDD

6

FR

7

VSS

8

EFMO

9

EFMIN

10

TEST2

11

CLV+

12

CLV_

13

V/P

14

HLF

15

TES

16

CD_LD_M–

LOADING MOTOR

DRIVER

IC91

TA7291S

R93

C91
47/16

C94

3.9

47/16

/CS

TEST5

SLICE
LEVEL

CONTROL

CLV

DIGITAL

SERVO

SERVO

COMMAND

TOFF

TGL

R60
1K

4M

JP+

16M

VCO

CLOCK

OSC

CONTROL

JP_

987654321

R98

6.8K

/RES

COIN

/CQCK

TEST11

µ-COM

INTERFACE

2KX8

RAM

ERROR

COERECT

FLAG

CONTROL

SYNC-DETECT

EFM DEMODULATE

IC2

LC78623D

SERVO/SIGNAL

CONTROL

FSEQ

VDD

PCK

23222120191817

+B

+B

R97

3.9K

CD-C470H,C470E,C480H/CP-C470H,C470E,C480H

MAIN PWB-A1(1/3)

+B

C55

100P

C58

100P

C56

100P

FILTER

DIGITAL

OUT

KTA1271 Y

D_GND

P29 12-H

TO DECK

SECTION

100P

EFLG

48

SBSY

47

XVSS

46

XIN

45

XOUT

44

XVDD

43

MUTER

42

RVDD

41

RCHO

40

RVSS

39

LVSS

38

LCHO

1BIT DAC

37
36

LVDD

MUTEL

35

NC

34

TEST4

33

TEST3

32

R90
330

+B

Q91

CD_D_NO

CD_TRAYEND

CD_U/D

1011

89

TO MAIN

SECTION

P26 3-H

+B

+B

C68

10/50

C67

10/50

D91

1SS133

SOL

D_GND

CD_D_NO

D_GND
D_GND

M–

M+

C92

0.022

C43
330/6.3

R82
150

C51

0.022

R74

2.7K

R73

2.7K

C61

(CH)

12P

C62
15P

(CH)

D_OUT

CD_GND

L1

0.82H

100/16

SOL

1

GND(M)

2

M–

3

M+

4

GND(D)

5

OPEN CLOSE

6

DISC NO.

7

GND(D)

8

MECHA UP

9

GND(D)

10

CNP10

R76

R75

390

C52

390

XL1

D8

1SS133

CD_4R3V

16.934MHz

R61
220

D9

1SS133

+B

Q81

KTC3203 Y

+5V

C81

100/16

CD_R-CH

C70
220P
A_GND

C69
220P

CD_L-CH

11

22

33

BI99B

BI99A

R84

22

+7.3V

1
2
3
4
5
6
7
8
9

10

CNS10

Q84
KTC3199 GR

Q83

KTC3199 GR

D_OUT1
+4R3V

L99

2.2µH

CDGND

OPTICAL FIBER

+B

R81
220

ZD81

MTZJ5.6B

BIM05

1
2

–

3
4

+

5
6

TRAY MOTOR

11
22

CNS5

R80

4.7K
CD_MUT

R79

C82

4.7K

1/50

1
2
3

C99

C98

0.022

GP1F32T

100/16

DATA LINK

CD_7V

CD_GND

M_12V

M3

T/T

M

UP DOWN

SW1
OPEN
CLOSE

PWB-G

SW2
MECHA UP

SW3
DISC NO

IC99

SOLM2

SOLENOID

TO MAIN

1

SECTION
P27 9-A

TO DECK/MAIN

2

SECTION
P27 9-A,P29 12-E

3

TO MAIN
SECTION
P27 9-A

4

5

TO MAIN
SECTION
P27 8-H

6

TO MAIN/DECK

7

SECTION
P27 7-H,
P29 12-B

RWC

SQOUT

EXTERNAL

OUTPUT

CONT2

CONT1

24

R87 1K

R86 1K

CD_LD_M+

C54

100P

FSX

WRQ

SFSY

SBCK

SUB-CODE

GENERATOR

EMPH

CONT5

CONT4

CONT3

R88 1K

SWITCHING

DRIVER

Q94

KRC107 M
32

SPEED_HIGH/LO

1

Q93

KRC102 M

32

1

X-TAL

C2F

R94

6.8K

R92

2.2K

C57

49

PW

4FS

DIGITAL

DOUT

31302928272625

R96

10K

• The numbers 1 to 12 are waveform numbers shown in page 43.

7

8 9 10 11 12

Figure 23 SCHEMATIC DIAGRAM (2/14)

– 23 –