Sharp CDC-3900 Service manual

CD-C3900

SERVICE MANUAL

No. S5931CDC3900/

CD-C3900

CD-C3900 mini component system consisting of CD-C3900 (Main
unit) and CP-C3900 (Speaker system).

• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.

The main body section of this model differs from CD-C662 in prints and color tone.
For the circuit section and disassembling method, Please refer to the accompanying Service Manual for CD-C662 (No.S4917CDC662/
/) as will as this Service Manual.

SPECIFICA TIONS

CD-C3900

● General

Power source: AC 120 V, 60 Hz
Power consumption: 210 W
Dimensions: Width; 10-5/8" (270 mm)

Height; 13" (330 mm)
Depth; 14-1/8" (358 mm)

Weight: 22.0 lbs. (10.0 kg)

● Amplifier section

Output power: RMS; 300 W (150 W + 150 W)

(10 % T.H.D.)

Output terminals: Speakers; 6 ohms

Headphones; 16-50 ohms
(recommended; 32 ohms)
CD digital output (optical)

Input terminals: Video/Auxiliary (audio signal);

500 mV/47 kohms

● Speaker section

CP-C3900

Type: 3-way type [7-7/8" (200 mm) woofer,

3-1/8" (80 mm) tweeter and super
tweeter]

Maximum input power: 300 W
Rated input power: 150 W
Impedance: 6 ohms
Dimensions: Width; 9-13/16" (250 mm)

Height; 13" (330 mm)
Depth; 13-1/4" (335 mm)

Weight: 13.4 lbs. (6.1 kg)/each

SHARP CORPORATION

– 1 –

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

CD-C3900

DIFFERENCE BETWEEN CD-C662 AND CD-C3900

REF.

NO

PART NO.

CD-C662

CABINET PARTS

202 92LCAB3081AS1 J 92LCAB3083AS1 J Front Panel Ass'y
202-1 –––––––––– –––––––––– Front Panel (Not Replacement Item) ––
202-2 JKNBZ0557AWSA J Same as CD-C662 Button,Disc No. AE
202-3 JKNBZ0558AWSA J Same as CD-C662 Button,Open/Close/Disc Skip AE
202-4 JKNBZ0559AWSA J Same as CD-C662 Button,Power AE
202-5 JKNBZ0560AWSA J Same as CD-C662 Button,X-BASS/Demo AE
202-6 JKNBZ0563AWSA J JKNBZ0563AWSB J Button,FF/REW/Tuning AG
202-7 JKNBZ0622AWSA J Same as CD-C662 Button,Timer/Sleep/Clock AD
202-8 JKNBZ0621AWSA J Same as CD-C662 Button,Dimmer/Equalizer AD
202-10 KNOB3051AASY1 J Same as CD-C662 Button, Function AK
202-11 HDECQ0412AWSA J Same as CD-C662 Operation Ring A AC
202-12 HDECQ0413AWSA J HDECQ0413AWSB J Operation Ring B AB
202-13 HEDCQ0414AWSA J Same as CD-C662 Cap,Operation Center AD
202-14 HDECQ0415AWSA J Same as CD-C662 Cover,LED AD
202-15 HDECQ0417AWSA J Same as CD-C662 Panel,Center Cap AE
202-16 HDECQ0418AWSC J HDECQ0418AWSB J Panel,Decoration AG
202-17 HDECQ0419AWSA J Same as CD-C662 Decoration,Play Button AF
202-18 HDECQ0420AWSA J Same as CD-C662 Decoration,Stop Button AE
202-19 HDECQ0467AWSA J Same as CD-C662 Panel,AMP AH
202-20 HDECQ0457AWSA J Same as CD-C662 Panel,Play Decoration AC
202-21 HDECQ0458AWSA J Same as CD-C662 Panel,Stop Decoration AC
202-22 PSHEP0031AWZZ J Same as CD-C662 Sheet,Reflector AC
203 92LMEC3051CTS1 J 92LMEC3052CTS1 Cassette,Holder Ass'y,Tape 1 AN
203-1 –––––––––– ––––––––––
203-2 GCoVA1221AWSB J GCoVA1221AWSC J Cassette Cover,Tape 1 AH
203-3 HDECQ0408AWSA J Same as CD-C662 Panel,Cassette,Tape 1 AD
204 92LMEC3051CTS2 J 92LMEC3052CTS2 J Cassette,Holder Ass'y,Tape 2 AN
204-1 –––––––––– ––––––––––
204-2 GCoVA1222AWSB J GCoVA1222AWSC J Cassette Cover,Tape 2 AH
204-3 HDECQ0409AWSA J Same as CD-C662 Panel,Cassette Tape 2 AD
247 GiTAR0462AWSA J GiTAR0467AWSA J Rear Panel [For U.S.A.] AN
247 GiTAR0466AWSA J GiTAR0468AWSA J Rear Panel [Except for U.S.A./Canada] AN
247 Not used GiTAR0469AWSA J Rear Panel [For Canada] AN

PACKING PARTS (FOR CANADA ONLY)

SPAKC0764AWZZ J SPAKC0786AWZZ J Packing Case [Except for Canada] AX
Not used SPAKC0787AWZZ J Packing Case [For Canada] AX
TLABR1023AWZZ J TLABR1022AWZZ J Label,Bar Code AB

ACCESSORIES PARTS

TiNSE0249AWZZ J TiNSE0250AWZZ J Operation Manual [For U.S.A.] AF
TiNSZ0419AWZZ J TiNSZ0421AWZZ J Operation Manual [Except for U.S.A./Canada]
Not used TiNSK0089AWZZ J Operation Manual [For Canada] AB
TiNSZ0420AWZZ J TiNSZ0422AWZZ J Quick Guide [For U.S.A. Only] AB

PART NO.
CD-C3900

DESCRIPTION

Cassette Holder,Tape 1 (Not Replacement Item)

Cassette Holder,Tape 2 (Not Replacement Item) ––

CODE

––

MARK: SPARE PARTS-DELIVERY SECTION

– 2 –

CP-C3900

NO. PARTS CODE

SPEAKER BOX PARTS

A

901 92L9503C J BE Cabinet Ass’y
902 92LJ1919LA J BA Front Panel,Left
903 92LJ1919RA J BA Front Panel,Right
904 92LJ1918A J AX Net Frame Ass’y
906 92LTD8675NM J Speaker Cord Ass’y

908 92LJ9802 J Catching Holder
909 92LF1228A J Screw,ø4×12mm
911 92LF1013 J Screw,ø3×10mm
912 92LP5815 J Label,Specifications

B

913 92LJ3093C J Input Terminal
914 92LK6763F J Paper Pipe
915 92LJ1920 J Support,Woofer
916 92L1678A J Screw,ø4×16mm
917 92LJ9803 J Rubber Cushion

PRICE
RANK

(With Capacitor)

911x4

SP3,4

DESCRIPTION

CD-C3900

NO. PARTS CODE

918 92LJ9804 J Felt
919 92LF1875 J Screw,ø4×18mm
SP1,2 VSP0020WBA56A J BE Woofer
SP3,4 VSP0080TBP36A J BA Tweeter
SP5,6 92LC2827AS J AP Super Tweeter Ass’y

PRICE
RANK

ACCESSORIES/PACKING PARTS

1 92LV1017CA J Sheet,Miramat
2 92LV4974B J Polyethylene Bag
3 92LN1876F J Packing Add.,Top
4 92LN1876R J Packing Add.,Bottom
5 92LV5795E J Layer Pad

DESCRIPTION

C

906

(with
Capacitor C1,2)

912

SP5,6

902,
903

D

911x2

901

913

918

918x2

E

914

919x4

904

F

SP1,2

908x4

916x4

915

RED

G

909x4

H

1

TWEETER
SP3(L-CH)
SP4(R-CH)

SUPER
TWEETER
SP5(L-CH)
SP6(R-CH)

WOOFER
SP1(L-CH)
SP2(R-CH)

23 45 6

917

C1,2
Capacitor

3.3µF,100V,
Electrolytic (N.P.)

SUPER
TWEETER
SP5(L-CH)

SP6(R-CH)

C1,2

Capacitor

RED

RED

TWEETER
SP3(L-CH)
SP4(R-CH)

BK

BK

WOOFER
SP1(L-CH)
SP2(R-CH)

BK

Figure 3 SPEAKER EXPLODED VIEW

– 3 –

CD-C662

SERVICE MANUAL

No. S4917CDC662//

CD-C662

CD-C662 mini component system consisting of CD-C662 (Main unit)
and CP-C662 and (Speaker system).

• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.

CONTENTS

Page

IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)....................................................................................................... 2

SPECIFICATIONS ............................................................................................................................................................. 2

NAMES OF PARTS ........................................................................................................................................................... 3

OPERATION MANUAL ...................................................................................................................................................... 5

QUICK GUIDE (FOR U.S.A. ONLY) .................................................................................................................................. 6

DISASSEMBLY.................................................................................................................................................................. 7

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 10

ADJUSTMENT ................................................................................................................................................................. 10

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 13

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 14

BLOCK DIAGRAM ........................................................................................................................................................... 15

SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD................................................................................................18

TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 36

FUNCTION TABLE OF IC................................................................................................................................................ 41

FL DISPLAY......................................................................................................................................................................48

REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)

SHARP CORPORATION

– 1 –

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

CD-C662

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

IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)

BEFORE RETURNING THE AUDIO PRODUCT

(Fire & Shock Hazard)
Before returning the audio product to the user, perform the
following safety checks.

1. Inspect all lead dress to make certain that leads are not
pinched or that hardware is not lodged between the chassis
and other metal parts in the audio product.

2. Inspect all protective devices such as insulating materials,

cabinet, terminal board, adjustment and compartment covers
or shields, mechanical insulators etc.

3. To be sure that no shock hazard exists, check for leakage

current in the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5k ohm, 10 watt resistor

paralleled by a 0.15µF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.

* Use a VTVM or VOM with 1000 ohm per volt, or higher,

sensitivity to measure the AC voltage drop across the
resistor (See diagram).

* Connect the resistor connection to all exposed metal parts

having a return path to the chassis (antenna, metal cabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.

VTVM

AC SCALE

1.5k ohms
10W

0.15 µ F

TO EXPOSED
METAL PARTS

All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.

TEST PROBE

CONNECT TO
KNOWN EARTH
GROUND

SPECIFICATIONS

CD-C662

General

Power source: AC 120 V, 60 Hz
Power consumption: Stand-by; 0.3 W

Power on; 210 W

Dimensions: Width; 10-5/8" (270 mm)

Height; 13" (330 mm)
Depth; 14-1/8" (358 mm)

Weight: 22.0 lbs. (10.0 kg)

Amplifier section

Output power: 150 watts minimum RMS per

channel into 6 ohms from 60 Hz
to 20 kHz, 10 % total harmonic
distortion

Output terminals: Speakers; 6 ohms

Headphones; 16-50 ohms
(recommended; 32 ohms)
CD digital output (optical)

Input terminal: Video/Auxiliary (audio signal);

500 mV/47 kohms

Tuner section

Frequency range: FM; 87.5 - 108 MHz

AM; 530 - 1,720 kHz

Cassette deck section

Frequency response: 50 - 14,000 Hz (Normal tape)
Signal/noise ratio: 55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/

playback)

Wow and flutter: 0.15 % (WRMS)

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)

CP-C662

Speaker section

Type: 2-way type [7-7/8" (200 mm)

woofer and 3-1/8" (80 mm)
tweeter]

Maximum input power: 300 W
Rated input power: 150 W
Impedance: 6 ohms
Dimensions: Width; 9-13/16" (250 mm)

Height; 13" (330 mm)
Depth; 13-1/14" (335 mm)

Weight: 13.4 lbs. (6.1 kg)/each

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

– 2 –

NAMES OF PARTS

CD-C662

Front Panel

1. Disc Number Selector Buttons

2. Disc Tray

3. Multi Indicator

4. Disc Skip Button

5. Open/Close Button

6. Extra Bass Indicator

7. FM Stereo Mode Indicator

8. FM Stereo Indicator

9. (CD) Repeat Indicator

10. (CD) Play Indicator

11. (CD) Pause Indicator

12. Spectrum Analyzer/Volume Level Indicator

13. (TAPE 2) Record Indicator

14. (CD) Disc Number Indicators

15. (CD/TUNER) Memory Indicator

16. Timer Play Indicator

17. Timer Record Indicator

18. Sleep Indicator

CD-C662

9

10
11

14

4

5

2

1

3

6
7

8

13

12

15
16

17
18

19. (CD) Track Down/Review Button
(TUNER) Preset Down Button
(TAPE 2) Rewind Button

20. (CD/TAPE) Stop Button

21. (TAPE) Play Button
(CD) Play/Repeat Button

22. (CD) Track Up/Cue Button
(TUNER) Preset Up Button
(TAPE 2) Fast Forward Button

23. Timer/Sleep Button

24. Clock Button

25. Timer Set Indicator

26. Power Button

27. Function Selector Buttons

28. Equalizer Mode Selector Button

29. Dimmer Button

30. Extra Bass/Demo Mode Button

31. Headphones Socket

32. (TAPE 2) Record Pause Button

33. Memory/Set Button

34. Tuning and Time Up/Cue Buttons

35. Volume Control

36. (TAPE 1) Cassette Compartment

37. (TAPE 2) Cassette Compartment

Rear Panel

38. CD Digital Output Socket

39. AC power lead

40. FM/AM Loop Aerial Socket

41. Video/Auxiliary (Audio Signal) Input Sockets

42. Speaker Terminals

23
24

25
26

27

38

31

19

32

20

33

21

34

22

28

29
30

35

3736

– 3 –

40
41

39

42

CD-C662

CP-C662

Front Speaker

1. Tweeter

2. Woofer

3. Bass Reflex Ducts

4. Speaker Terminals

1

3

4

2

Remote Control

1. Remote Control Transmitter LED
CD Control section

2. Disc Number Select Buttons

3. Memory Button

4. Pause Button

5. Clear Button

6. Track Down/Review Button

7. Track Up/Cue Button

8. Disc Skip Button

9. Play/Repeat Button

10. Stop Button

11. Random Button
Tuner control section

12. Preset Up/Down Buttons
Tape control section

13. (TAPE 1) Play Button

14. (TAPE 2) Record Pause Button

15. (TAPE 1/2) Stop Button

16. (TAPE 2) Play Button

17. (TAPE 2) Rewind Button

18. (TAPE 2) Fast Forward Button
Common section

19. Equalizer Mode Selector Button

20. Function Selector Buttons

21. Power Button

22. Extra Bass Button

23. Volume Up/Down Buttons

1

2
3

4

5

8
9

10

11

6
7

13 14

16 17 18

15

12

19
20

21 23
22

– 4 –

OPERATION MANUAL

SETTING THE CLOCK

1

Press the POWER button to enter the stand-by mode.

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-hou r display will appear.

(AM 0:00 - PM 11:59)

"0:00" → The 24-hour d isplay will ap pear.

(0:00 - 23:59)

Note that this can only be set when the unit is first installed

or it has been reset.

5

Press the MEMORY/SET button.

6

Press the TUNING/TIME ( or ) button to adjust the hour.

Press the TUNING/TIME ( or ) button once to advance

the time by 1 hour. Hold it down to advance continuously.

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 TUNING/TIME ( or ) button once to advance

the time by 1 minute. Hold it down 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 cord 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 cord was disconnected.

CLOCK

POWER

MEMORY/

SET

TUNING/

TIME

( )

AM 12:00 AM 0:00 0:00

2

3

4

7

6

5

8

9

If this happens, follow the procedure below to change the clock

time.

To change the clock time:

Press the CLOCK button.

Within 5 seconds, press the MEMORY/SET button.

Perform steps 6 - 9 above.

To see the time display:

Press the CLOCK button.

The time display will appear for about 5 seconds.

To change the time display mode:

Perform steps 1 - 2 in the section "RESETTING THE

MICROCOMPUTER", on page 15.

Perform steps 1 - 9 above.

(Main unit operation)

In this example, the clock is set for the

12-hour (AM 12:00) system.

1

2

1

2

3

2

1,2

RESETTING THE MICROCOMPUTER

Reset the microcomputer under the following conditions:

To erase all of the stored memory contents (clock and timer

settings, and tuner and CD presets).

If the display is not correct.

If the operation is not correct.

1

Press the POWER button to enter the stand-by mode.

2

While pressing down the button and the

button, hold down the POWER button for at least 1 second.

Caution:

The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

presets.

CD-C662

– 5 –

CD-C662

SPEAKERS

LEFTRIGHT

RATED SPEAKER INPEDANCE :

6 OHMS MIN.

MINI COMPONENT SYSTEM

Quick Guide/Guía rápida

CD-C662

Remote control x 1

Controlador remoto x 1

2 “AA” batteries

Dos pilas “AA”

Remote Sensor

Sensor remoto

2

Preparation for use /

Preparación para su uso

1

Check the supplied accessories /

Compruebe los accesorios suministrados

FM/AM loop antenna x 1

Antena de cuadro de

FM/AM x 1

Batteries are not included.

Las pilas no están incluidas.

8” - 20’ (0.2m - 6m)

0,2m - 6m

Speaker connection

Conexión de los altavoces

Antenna connection

Conexión de las antenas

Right speaker

Altavoz derecho

Left speaker

Altavoz izquierdo

AM Loop Antenna

Antena de cuadro

de AM

FM Antenna

Antena de FM

AC 120 V, 60 Hz

120 V de CA, 60 Hz

Turning the power on and off

Conexión y desconexión de la alimentación

Remote control

Controlador remoto

POWER

Speaker wire x 2

Cable de altavoz x 2

Red

Rojo

Black

Negro

Red

Rojo

Black

Negro

Red

Rojo

15

15

3

Listening to a CD /

Audición de discos CD

4

Listening to a tape /

Audición de una cinta

5

Listening to the radio /

Audición de la radio

6

Recording from CDs /

Grabaciones de discos CD

7

Sound control /

Control del sonido

Label facing up

Etiqueta hacia arriba

To stop the playback

Para detener la reproducción

To stop the recording

Para detener la grabación

Load the disc to be

recorded.

Introduzca el disco

que va a grabar.

CD recording

starts.

La grabación de

CD empieza.

Volume

Volumen

Extra bass (X-BASS)

Graves extra (X-BASS)

Pre-programmed equalizer

Ecualizador preprogramado

FLAT

HEAVY-1 HEAVY-2

SOFT-2

SOFT-1 VOCAL

To stop the playback

Para detener la reproducción

TAPE 1 TAPE 2

TAPE 2

VOLUME

– 6 –

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 to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.

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

CD-C662

CD-C662

Top Cabinet

Front Panel
(A1)x2
ø3x12mm

Side Panel
(Right)

(B1)x2
ø3x10mm

CD-C662

STEP REMOVAL PROCEDURE FIGURE

1 Top Cabinet 1. Screw ..................... (A1) x4 7-1

2 Side Panel 1. Screw ..................... (B1) x8 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. Screw ..................... (C1) x1

3. Hook....................... (C2) x3

4. Hook....................... (C3) x2

5. Socket .................... (C4) x3

4 Rear Panel 1. Screw ..................... (D1) x5 7-2

(with Digital
Output PWB)

5 Main PWB 1. Screw ..................... (E1) x1 8-1

2. Socket .................... (E2) x4

3. Flat Cable .............. (E3) x1

6 Front Panel 1. Screw ..................... (F1) x3 8-1

7 Power Amp. PWB 1. Screw ..................... (G1) x7 8-2

8

Power Supply PWB

9 Display PWB/ 1. Screw ..................... (J1) x13 8-3

Switch PWB 2. Socket .................... (J2) x1

10 Tape Mechanism 1. Open the cassette holder. 8-3

11 Turntable 1. Screw ..................... (L1) x1 8-4

12 Disc Tray 1. Screw ..................... (M1) x2 8-4

13 CD Servo PWB 1. Screw ..................... (N1) x1 8-5

(Note 2) 2. Socket .................... (N2) x4

14 CD Changer 1. Screw ..................... (P1) x4 8-6

Mechanism

15 CD Mechanism 1. Screw ..................... (Q1) x1 8-6

2. Socket .................... (F2) x1

2. Socket .................... (G2) x2

3. PWB Holder ........... (G3) x1

1. Screw ..................... (H1) x4 8-2

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

2. Cover ..................... (L2) x1

2. Guide ..................... (M2) x2

Back Board

CD Player
Unit

(C1) x1
ø3x10mm

(D1) x3
ø3x6mm

(B1)x4
ø3x10mm

(C4) x3

(D1) x1
ø3x10mm

(C3) x1

Pull

LOCK
LEVER

Figure 7-1

Rear Panel

Figure 7-2

(B1)x2
ø3x10mm

CD Tray Cover

1

Side Panel
(Left)

(A1)x2
ø3x12mm

Hook
(C2) x3

1
2

(C3) x1

(D1)x1
ø3x10mm

Note 1:

How to open the changer manually. (Fig. 7-3)

1. Change, 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.

Note 2:

1. After removing the connector for the optical pickup from the

connector, wrap the conductive aluminium foil around the
front end of connector to protect the optical pickup from
electrostatic damage.

Figure 7-3

– 7 –

CD-C662

(E2)x2

(E3)x1

Power Supply
PWB

(E2)x1

(F2)x1

Front Panel

(L1) x1
ø3 x10mm

(L2) x1

Washer

Turntable

Power
Supply
PWB

Power Amp.
PWB

(H1)x4
ø4x8mm

(E2)x1

Power Amp.
PWB

Figure 8-1

(G1)x2
ø3x6mm

(F1)x3
ø3x10mm

Main
PWB

(G1)x5
ø3x10mm

(G2)x2

Push

Main PWB

(E1)x1
ø3x10mm

(G3)x1

1 1

2

Pull

Power Amp.
PWB

Push

(M1) x1
ø3 x10mm

(M2) x1

(N2) x2

CD Player Unit

Disc Tray

(M1) x1
ø3 x10mm

(M2) x1

Figure 8-4

(N1) x1
ø3 x10mm

CD Servo PWB

Main
Chassis

Switch PWB

(J1)x2
ø3x10mm

(J1)x11
ø3x10mm

PowerAmp. PWB

Figure 8-2

(K1)x6
ø3x10mm

Figure 8-3

(J2)x1

Front Panel

Tape Mechanism

Display
PWB

Open

Cassette
Holder

(N2) x2

CD Player Unit

Figure 8-5

(P1) x4

ø3 x12mm
(Q1) x1
ø2.6 x10mm

Shift Lever

CD Changer
Mechanism

CD Player Base

Be careful 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 8-6

CD Mechanism

– 8 –

CP-C662

STEP REMOVAL

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

2. Rubber ................... (A2) x4

3. Screw ..................... (A3) x4

4. Tip .......................... (A4) x2 9-2

2 Woofer 1. Screw ..................... (B1) x4 9-2

3 Tweeter 1. Screw ..................... (C1) x4 9-2

PROCEDURE

Front Panel

CD-C662

FIGURE

(A1)x1

(A2)x4

(A3)x4
ø4x16mm

Figure 9-1

Front Panel

Tweeter

(C1)x4
ø3x10mm

(A4)x2

(B1)x4
ø4x16mm

Woofer

Figure 9-2

– 9 –

CD-C662

REMOVING AND REINSTALLING THE MAIN PARTS

CD MECHANISM SECTION

Perform steps 1, 2, 3, 11, 12, 13, 14 and 15 of the disassembly
method to remove the CD mechanism.

How to remove the loading motor
(See Fig. 10-1)

1. Remove the screws (A1) x 2 pcs., to remove the loading
motor.

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.

Note

After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector to protect the optical pickup from
electrostatic damage.

Loading/Up/Down
Motor

Motor
PWB

(B1) x2

ø2.6 x6mm

(A1) x2
ø2.6 x5mm

Figure 10-1

Stop Washer
(B3) x1

Pickup

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 60 g.cm
Fast forward: TW-2231 — 60 to 120 g.cm
Rewind: TW-2231 — 60 to 120 g.cm

Specified Value

Tape 2: Over 80 g

Specified Value

Tape 2

Shaft
(B2) x1

Gear

CD Mechanism

(B4) x1

Figure 10-2

• Tape Speed

Test Tape

Normal MTT-111 Volume in 3,000 ± Speaker
speed motor. 30 Hz terminal

Adjusting

Point

(MM1) (Load

TAPE MECHANISM

Specified

Value

MM 1
Motor

Instrument

Connection

resistance:
8 ohms)

– 10 –

Volume in motor

Figure 10-3

CD-C662

Pin 13 of IC303

Pin 21 of IC303

D

G

S

10 kΩ

TO FREQUENCY
COUNTER

FET : 2SK19 or 2SK54

TUNER SECTION

fL: Low-range frequency
fH: High-renge frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage Frequency

IF 450 kHz 1,720 kHz T351 *1
Band — 530 kHz (fL): T333 *2

Coverage 1.1 ± 0.1 V
Tracking 990 kHz 990 kHz (fL): T331 *1

Frequency

Display

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

• FM RF

Signal generator: 1 kHz, 75 kHz dev., FM modulated

Test Stage

Band — 87.50 MHz L303(fL): *1
Coverage 3.4 V ± 50 mV

RF 98.00 MHz 98.00 MHz L302 *2

Frequency

(10-30 dB)

Frequency

Display

*1. Input: Antenna, Output: TP301
*2. Input: Antenna, Output: Speaker terminal

• Detection

Signal generator: 10.7 MHz, FM sweep generator

Test

Stage

Detection 10.7 MHz 98.00 MHz T352 Input: Pin 1 of

IF 10.7 MHz 98.00 MHz T301(Turn Input: Pin 1 of

Frequency

Frequency

Display

Setting/

Adjusting

Parts

Serring/

Adjusting

Point

Adjusting

Parts

the core of IC301
transformer Output: TP302
T352 fully
counter­clookwise.)

Instrument

Connection

Instrument

Connection

Instrument

Connection

IC303
Output: TP302

• VCO Frequency

Frequency

98.00 MHz 98.00 MHz VR351* Pin 13, Pin 21
(60 dB) and ground

Frequency

Display

Adjusting

Parts

Instrument

Connection

of IC303

* Adjust for 76 kHz ± 200 Hz.

Notes:

After preparing the test circuit shown in Fig 11-2, connect the
Pin 13 , Pin 21 and ground of the IC303 with test circuit, and
measure the Value.
At this time, apply a standard unmodulated signal input and
adjust the VCO.

CD ERROR CODE DESCRIPTION

When a malfunction occurs during CD operation, an error
code will be displayed to identify the function in CD operation
which failed.

Error State Code
0001 Cannot detect puin SW
0101 Tray close operation error
0105 Tray close operation error
0201 Tray open operation error
0203 Tray open operation error
0304 Disc skip operation error
0305 Disc skip operation error

0307 Disc skip operation error

Figure 11-2

FM BAND
COVERAGE fL

R381

TP301

MAIN PWB

1

IC301

L303

T301

L302

FM RF

FM IF

T351

AM IF

1

T333

IC303

2113

T352

FM DET

VR351

VCO

R360

TP302

Figure 11-1 ADJUSTMENT POINTS

– 11 –

BF301

AM LOOP
ANTENNA

CNP301

T331

AM TRACKING
fL

AM BAND
COVERAGE fL

CD-C662

1 2 3

TEST MODE

• Setting the test mode

Any one of test mode can be set by pressing several keys as follows.
<REC. PAUSE> + <DISC. SKIP> + <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

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

Press <STOP> key.

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

200 ms
1V/diV
IC 1 15

200 ms
1V/diV
IC 1 7

TO

TE

TRACKING/
ERROR
BARANCE

1

ADJUST

2

Figure 12-4

– 12 –

10ms

0.50 V
IC1 20 FE

10ms

0.50 V
IC1 7 TE

Figure 12-3

Enlarged
View

TRACKING
OFF-SET
ADJUST

1
2

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.

CD-C662

• 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.

REF. NO DESCRIPTION POSITION POSITION

JOG701 VOLUME JOG ON—OFF
SW1 OPEN/CLOSE ON—OFF
SW2 MECHA UP ON— OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW701 POWER ON—OFF
SW703 CLOCK ON—OFF
SW704 TIMER/SLEEP ON—OFF
SW705 DISC 1 ON—OFF
SW706 DISC 2 ON—OFF
SW707 DISC 3 ON—OFF
SW708 DISC SKIP ON—OFF
SW709 OPEN/CLOSE ON—OFF
SW710 REV ON—OFF
SW711 REC PAUSE ON—OFF
SW712 MEMORY/SET ON—OFF

FRONT

VIEW

REF. NO DESCRIPTION

SW713 STOP ON—OFF
SW714 TUNER (BAND) ON—OFF
SW715 VIDEO/AUX ON—OFF
SW716 TAPE ON—OFF
SW717 CD ON—OFF
SW722 FF ON—OFF
SW723 TUNING UP ON—OFF
SW724 TUNING DOWN ON—OFF
SW725 PLAY ON—OFF
SW728 X-BASS/DEMO ON—OFF
SW729 EQUALIZER ON—OFF
SW730 DIMMER ON—OFF
SWM 3 FOOL PROOF ON—OFF
SWM 4 F.A.S. ON—OFF
SWM 5 CAM ON—OFF

FRONT VIEW

E C B

(S) (G) (D)

(1) (2) (3)

2SA1015 GR
2SA1318
2SC3331
2SC535 C
KRA102 M
KRA109 M
KRC102 M
KRC104 M
KRC107 M

KTA1266 GR
KTA1271 Y
KTA1273 Y
KTA1274 Y
KTD2058

L1154GT4
SLI342YCB
SLI342DCB
SLI342UCB

SLI342YCJ
KTC3199 GR
KTC3200 GR
KTC3203 Y

Figure 13 TYPES OF TRANSISTOR AND LED

– 13 –

CD-C662

1

2

5ms

0.50 V
IC1 20 F.E

5ms

5.0 V
IC1 54 DRF

WAVEFORMS OF CD CIRCUIT

STOP PLAY

FOCUS SERCH

0.5ms

6

10.0 V
JP+

0.5ms

7

10.0 V
JP-

0.5ms

8

0.50 V

3
1

JP

0.5ms

9

1.00 V
TE

0.5ms

3

1.00 V
HF

0.5ms

4

5.0 V
HFL

0.5ms

5

5.0 V
TES

0.5ms

1.00 V

3

HF

0.5ms

4

5.0 V
HFL

0.5ms

5

5.0 V
TES

50ms

6

10.0 V
JP+

50ms

7

10.0 V
JP-

50ms

8

0.50 V
JP

50ms

9

1.00 V
TE

CUE

1
2

3

REVIEW

1
2

3

CUE

10

11

10

11

12

20ms

1.00 V
SPO

20ms

2.00 V
CLV+

50ms

1.00 V
SPO

50ms

2.00 V
CLV+

5s
100mV
SLD

PLAY

NORMAL DISC
TN0=01

PLAY

TCD-712 (140mm)
TN0=01

PLAY

TCD-712

0.5ms

10.0 V

6

JP+

0.5ms

10.0 V

7

JP-

0.5ms

0.50 V

8

JP

0.5ms

9

1.00 V
TE

50ms

10.0 V

6

JP+
50ms

10.0 V

7

JP­50ms

8

0.50 V
JP

50ms

9

1.00 V
TE

REVIEW

12

0.5s
100mV
SLD

1

1

– 14 –

27

1

2

3

4

1

8

6

7

18

24

40

20

4

5

15

23

16

26

27

7
2

2520

29

21

22

35

14

38

39

28

41

42

37

36

PU-IN SW

XL1

XIN

LD0

FIN2

JP–

CV+

SLC

SL1

FIN1EF

TO

FD

SPO

NC

SLD

SL–

SL+

DRF

CL

DAT

CE

VCC1

6

+5V

PICKUP IN

SW4

FOCUS COIL

TRACKING COIL

M1

SPINDLE

MOTOR

M

M

M2

SLED

MOTOR

PICKUP UNIT

9

IC2

LC78622NE

SERVO/SIGNAL

CONTROL

+B1

IC3

M63001FP

FOCUS/

TRACKING/

SPIN/SLED

DRIVER

IC1

LA9241M

SERVO AMP.

RES. CQCK. COIN

SQOUT. RWC. WRQ

~

~

~

CL, DAT, SELIAL CONTROL/CE

Q51

SL+. SL–. DRF

9

8

7

6

5

4

3

2

1

GND (D)

MECHA UP

GND (D)

DISK NO.

OPEN/CLOSE

GND (D)M–M+

GND (M)

9

8

7

6

5

4

3

2

1

CNP10

M

+5V

+B1

62

64 45 3623 43

37

31

383940

24

25

10

1

2

2

1

3

3

2

1

4

5

6

10

265853

101220

324043

44

5352515431302923271615

4144

Q1

Q52

+4.3V

Q81 +7.3V (+B1)

REGULATOR

TO MAIN SECTION

(TO IC601)

XOUT

EFMO

EFMIN

CLV+

JP–

CONT2

CONT1

LCHO

LVSS

RVSS

RCHO

VVDD

VDD

LVDD

RVDD

XVDD

SW1

OPEN/CLOSE

SW2

MECHA UP

SW3

DISC No.

M3

LOADING

SOLM1

TO MAIN

SECTION

CNS10

+B5

~~

CNP11

BI1B

2

1

BI1A

CNP99

+5V

2

4

8

33

38

39

46

~

646251

11

22

CD-C662

Figure 15 BLOCK DIAGRAM (1/3)

– 15 –

CD-C662

1

4
3

8

M

2

8

M

FM

ANTENNA

AM LOOP
ANTENNA

BF301

FM B.P.F

1

FM FRONT END

2 3 4

L302

AM TRACKING

T331 T333

IC301

TA7358AP

5

7

FM

OSC

FM RF

OSC BUFF

AM BAND
COVERAGE

L303

Q302

8

FM OSC

6

9

FM IF

T301

VT

FM +B

CF301

FM IF IN

FMOSC

Q344

SWITCHING

SWM3

FOOL PROOF

SWM4

F.A.S

SOLM1

FM DET

20

17

+B7

6

DODICL

17

SOLENOID

SWM5

CAM

VR351

MPX VCO ADJ

15

13

VCO

FM/AM

MPX IN

16

11

Q343

FM/AM
SWITCHING

IC704

3

2

VOLTAGE

REGURATER

+B4

MONO/ST

L

9

10

R

1

–B+B5

8

3

IC56

KIA455

5

OPE A

6 7

IC56

KIA455

3

OPE A

8

4

–B1+B5

+B4

AM IF

T351

CF351

1 3

AM MIX

IC303

LA1805

FM/AM IF MPX.

24

23

22

AM+B

AM RF IN

AM OSC IN

X352

4.5MHz

FM IN

20

1

OSC

FM

AM IN

22

16

15

IC302

LC72131

PLL (TUNER)

10

7

+B4

T352

21

6

5

GND AM IF

11

FM DET

FM+B MO/ST

DET OUT

7

STEREO

CE

3 4

5

21

FROM CD SECTION
CNP11

TAPE 1

PB HEAD

TAPE 2

REC PB HEAD

L-CH
R-CH

L-CH
R-CH

ERASE
HEAD

REC

P.B

AC BIAS

CNS11

1
2
3

SWITCHING

Q103~Q106

PLAYBACK AND RECORD

R(T1)

R(T2)

POP REDUCE

L REC
R REC

SWITCHING SWITCHING

Q107
Q108

BIAS
OCS

Q128
L104

AN7345K

/PLAYBACK AMP.

L(T1)

1

24

L(T2)

2

23

L NF

3
4

R NF

T1/T2

6

REC

9

16
14

REF

12

NOR/
HIGH

15 19

Q109

SWITCHING

IC101

T1/T2

Q111

P.B.

H/N

13

4

21

5

20

7

18

8

17
10

Q110

L
R

L NF
R NF
ALC

+B4

PB

L R REC

JK601

VIDEO/AUX

L
R

Q113
Q114

SWITCHING

Q124

L103

AUX
TAPE

TUNER

CD

11

5

L

16

R

4

L

17

R

3

L
R

18

AUDIO PROCESSOR

L

2

R

19

BAIS
Q126

M62439SP

1

20

10

IC601

9

Q121
Q122

MUTING

–B4

R

13

8

L

Figure 16 BLOCK DIAGRAM (2/3)

– 16 –

O/ST

9

0

3
5

3

–B1+B5

8

IC563

KIA4558P

OPE AMP.

6 7

IC562

KIA4558P

OPE AMP.

8

4

–B1+B5

CD-C662

FL701

DISPLAY

Q702

M

Q703

MM1

TAPE MOTOR

4

1

1

+B5

+B7

1

RX701

2

+B7

KEY
SW701,
SW703~SW717,
SW722~SW725,
SW728~SW730

+B7

3

~~~

1 2 3

15 2516

4

50
49
48
47
46

VDD

45
44
43
42
41
40
39
38
37
36
35
34

AVDD

33
32
31

26

535251

282930

+B5

PHM1

36

37 3839

29

IC701

IX0280AW

SYSTEM CONTROL

MICROCOMPUTER

VDD

+B7

XL701

4.19MHz

7170696867666564636261 80797877

737260595857565554

767574

101112131415161718192021222324252627

8

9

6

5

7

Q704

Q705
Q706
Q707

4 3 2 1

+B5

81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

100

VDD

TO CD
SECTION

Q907

MEMORY
BACK UP

+B1

M901

M

FAN MOTOR

JK671
HEADPHONES

UNSWITCH
+B7

~

28

Q910

+B5

4

VL–

7

Q803

VH+

1

VH–

8

Q801

Q911

13

2

D810

D809

D811~D814

D815
~D817

Q802

15

14

L-OUT
R-OUT

Q901
Q902

F804

5A/125V

F805

5A/125V

F806

2A/250V

D802~D805

Q905

Q903
Q904

T.F

T801

POWER

TRANSFORMER

TRANSFORMER

T802

POWER

RL901

F801

5A/125V

SO901
SPEAKER
TERMINAL

FRONT
SPEAKER

RL801

AC POWER
SUPPLY CORD

AC 120V, 60Hz

–B4

Q908

Q603
Q604

+B1

+B4

+B5

Q909

+7.3V

+12V(ANALOG)

+12V(MOTOR)

Q853

UNSWITCH

+B7

VOLTAGE

REGULATOR

R

3

L

Q601
Q602

REC

ZD802

T1/T2

BAIS

Q852

Q851

Q850

REGULATOR

REGULATOR

IC901

18

STK40704

22

POWER AMP.

VL+

VOLTAGE

VOLTAGE

VOLTAGE

REGULATOR

Figure 17 BLOCK DIAGRAM (3/3)

– 17 –