Sharp CDC-1900 Service manual

CD-C606/1900,CP-C606/1900

SERVICE MANUAL

No. S3909CDC606//

CD-C606
CD-C1900

Illustration: CD-C606

CP-C606
CP-C1900

CD-C606 mini component system consisting of
CD-C606 mini component system and
CP-C606 speaker system

CD-C1900 mini component system consisting of
CD-C1900 mini component system and
CP-C1900 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

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

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

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

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

QUICK GUIDE ................................................................................................................................................................... 6

DISASSEMBLY.................................................................................................................................................................. 8

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

ADJUSTMENT ................................................................................................................................................................. 11

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

TYPE OF TRANSISTER AND LED ................................................................................................................................. 13

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

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

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

VOLTAGE ........................................................................................................................................................................ 32

TROUBLESHOOTING ..................................................................................................................................................... 33

FUNCTION TABLE OF IC................................................................................................................................................ 37

FL SEGMENT ...................................................................................................................................................................42

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

Page

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-C606/1900,CP-C606/1900

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).

VTVM

AC SCALE

1.5k ohms
10W

0.15µF

TO EXPOSED
METAL PARTS

* 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.
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

CD-C606/1900

SPECIFICATIONS

General

●

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

Power on; 40 W

Dimensions: Width; 10-5/8" (270 mm)
(For U.S.A.)

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

Weight: 10.3 lbs (4.7 kg)
(For U.S.A.)

Weight: 4.7 kg (10.3 lbs)

(For Canada)

●

Amplifier section

Output power: 10 watts minimum RMS per
(For U.S.A.)

Output power: MPO; 36 W (18 W + 18 W)
(For Canada)

Output terminals: Speakers; 8 ohms

T uner section

●

Frequency range: FM; 87.5-108 MHz

Height; 11-13/16" (300 mm)
Depth; 13-7/8" (353 mm)

Height; 300 mm (11-13/16")
Depth; 353 mm (13-7/8")

channel into 8 ohms from 80 Hz to
20 kHz, 10% total harmonic
distortion

(10% T .H.D.)
RMS; 20 W (10 W + 10 W)
(10% T .H.D.)

Headphones; 16-50 ohms
(recommended; 32 ohms)

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 semiconductor

laser pickup

D/A converter: 1-bit D/A converter
Frequency response:20 -20,000 Hz
Dynamic range: 90 dB (1 kHz)

CP-C606/1900

Speaker section

●

Type: 2-way [4” (10cm) woofer and

super tweeter]

Maximum input
power: 20 W

Rated input power: 10 W
Impedance: 8 ohms
Dimensions: Width; 8-11/16" (220 mm)

(For U.S.A.)

Height; 11-13/16" (300 mm)
Depth; 7-1/16" (180 mm)

Dimensions: Width; 220 mm (8-11/16")
(For Canada)

Height; 300 mm (11-13/16")
Depth; 180 mm (7-1/16")

Weight:(For U.S.A.) 4.4 lbs. (2.0 kg)/each

Weight:(For Canada) 2.0 kg (4.4 lbs.)/each

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

– 2 –

CD-C606/1900,CP-C606/1900

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).

VTVM

AC SCALE

1.5k ohms
10W

0.15µF

TO EXPOSED
METAL PARTS

* 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.
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

CD-C606/1900

SPECIFICATIONS

General

●

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

Power on; 40 W

Dimensions: Width; 10-5/8" (270 mm)
(For U.S.A.)

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

Weight: 10.3 lbs (4.7 kg)
(For U.S.A.)

Weight: 4.7 kg (10.3 lbs)

(For Canada)

●

Amplifier section

Output power: 10 watts minimum RMS per
(For U.S.A.)

Output power: MPO; 36 W (18 W + 18 W)
(For Canada)

Output terminals: Speakers; 8 ohms

T uner section

●

Frequency range: FM; 87.5-108 MHz

Height; 11-13/16" (300 mm)
Depth; 13-7/8" (353 mm)

Height; 300 mm (11-13/16")
Depth; 353 mm (13-7/8")

channel into 8 ohms from 80 Hz to
20 kHz, 10% total harmonic
distortion

(10% T .H.D.)
RMS; 20 W (10 W + 10 W)
(10% T .H.D.)

Headphones; 16-50 ohms
(recommended; 32 ohms)

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 semiconductor

laser pickup

D/A converter: 1-bit D/A converter
Frequency response:20 -20,000 Hz
Dynamic range: 90 dB (1 kHz)

CP-C606/1900

Speaker section

●

Type: 2-way [4” (10cm) woofer and

super tweeter]

Maximum input
power: 20 W

Rated input power: 10 W
Impedance: 8 ohms
Dimensions: Width; 8-11/16" (220 mm)

(For U.S.A.)

Height; 11-13/16" (300 mm)
Depth; 7-1/16" (180 mm)

Dimensions: Width; 220 mm (8-11/16")
(For Canada)

Height; 300 mm (11-13/16")
Depth; 180 mm (7-1/16")

Weight:(For U.S.A.) 4.4 lbs. (2.0 kg)/each

Weight:(For Canada) 2.0 kg (4.4 lbs.)/each

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

– 2 –

CD-C606/1900,CP-C606/1900

123

X-BASS

kHz
MHz

SLEEP

STMEMORY

REC

4567

8

1314

91011

12

19

21

25

16

23
24

22

20

27

17

26

18

28 29

30 31

1

23

15

CD-C606/1900

Front panel

■

1. Disc T ray

2. Disc Skip Button

3. Open/Close Button

4. Disc Number Indicator

5. Record Indicator

6. Sleep Indicator

7. Extra Bass Indicator

8. Function/CD Trac k/CD Counter/Frequency/

9. Memory Indicator

10. FM Stereo Mode Indicator

11. FM Stereo Indicator

12. CD Repeat Indicator

13. CD Play Indicator

14. CD Pause Indicator

15. Timer Indicators

Preset Channel/Volume/Timer/Sleep Time
Indicator

NAMES OF PARTS

16. (TAPE 2) Record Pause Button

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

18. (CD) Track Up/Cue Button
(TUNER) Preset Up Button
(TAPE 2) Fast Foward Button

19. Timer/Sleep Button

20. Clock Button

21. Power Button

22. Function Selector Buttons

23. Extra Bass/Demo Button

24. Volume Up/Down Buttons

25. Memory/Set Button

26. (CD/TAPE) Stop Button

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

28. Tuning and Time Up/Down Buttons

29. Headphone Socket

30. (TAPE 1) Cassette Compartment

31. (TAPE 2) Cassette Compartment

– 3 –

CD-C606/1900,CP-C606/1900

CD-C606/1900

■

Rear panel

1. AC Power Input Socket

2. Speaker Terminals

3. FM/AM Loop Aerial Socket

CP-C606/1900

■

Speaker

4. Super Tweeter

5. Woofer

6. Bass Reflex Duct

7. Speaker Wire

4
5

6

1
2

3

CD-C606/1900

■

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 1/2) Stop Button

15. (TAPE 2) Play Button

16. (TAPE 2) Rewind Button

17. (TAPE 2) Fast Forward Button

18. (TAPE 2) Record Pause Button

19. Function Selector Buttons

20. Power Button

21. Extra Bass Button

22. Volume Up/Down Buttons

2
3

4
5

6
7

18
19
20

21

13

7

1

8

9
10

11
12

14 15 16 17

1

22

– 4 –

Replace the batteries if the operating distance is reduced or if

the operation 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 inter-

fere with operation. Change the lighting or the direction of the

unit.

Keep the remote control away from moisture, excessive heat,

Remote control

●

Notes concerning use:

■

●

●

15

15

15

shock, and vibrations.

●

1

OPERATION MANUAL

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

settings, and tuner and CD presets).

●

Reset the microcomputer under the following conditions:

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

If the display is not correct.

If the operation is not correct.

●

●

1

2

CD-C606/1900,CP-C606/1900

Press and hold down the / button and the /

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

The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

preset.

●

Caution:

2

8" - 20'

(0.2 m - 6 m)

PREPARATION FOR USE

(AM 12:00 - PM 11:59)

(AM 0:00 - PM 11:59)

(0:00 - 23:59)

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

Press the CLOCK button.

Within 5 seconds, press the MEMORY/SET button.4Press the TUNING/TIME ( or ) button to select the time

display mode.

"AM 12:00" The 12-hour display will appear.

"AM 0:00" The 12-hour display will appear.

"0:00" The 24-hour display will appear.

1

2

3

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

it has been reset (see page 13).

Press the MEMORY/SET button.6Press 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".

5

Press the MEMORY/SET button.8Press the TUNING/TIME ( or ) button to adjust the minutes.

7

RESETTING THE MICROCOMPUTER

The hour setting will not advance even if minutes advance

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

from "59" to "00".

the time by 1 minute. Hold it down to change the time in 5

minute intervals.

Press the MEMORY/SET button.

The clock starts operating from "0" seconds. (Seconds are not

9

1,2

displayed.)

In the event of 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.

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

time.

Note:

To change the clock time:

Press the CLOCK button.

1

Within 5 seconds, press the MEMORY/SET button.

Perform steps 6 - 9 above.

3

2

The time display will appear for about 5 seconds.

To see the time display:

Press the CLOCK button.

To change the time display mode:

Perform steps 1 - 2 in the section "RESETTING THE MICRO

COMPUTER".

Perform steps 1 - 9 above.

1

2

(Main unit operation)

In this example, the clock is set for the 12-hour

SETTING THE CLOCK

(AM 12:00) system.

CLOCK

POWER

TUNING/

TIME

( )

MEMORY/

SET

AM 0:00AM 12:00 0:00

2

3

4

5

6

7

9

8

– 5 –

CD-C606/1900,CP-C606/1900

OPEN

/CLOSE

QUICK GUIDE

/TIME

TUNING

La grabación de CD

empieza.

● CD recording starts.

●

TAPE 2

TAPE 1

(BAND)

TUNER

C D

TAPE

Tape playback

Reproducción de cintas

Quick-Guide

(1 2)

Guía rápida

● Label facing up

OPEN

/CLOSE

(BAND)

TUNER

C D

TAPE

CD playback

Reproducción de discos compactos

Antena de FM

● FM Antenna

●

(1 2)

Etiqueta hacia arriba

●

Radio operation

Funcionamiento de la radio

120 V de CA, 60 Hz

● AC 120 V, 60 Hz

●

AM

FM MONO

ST

FM STERO

(BAND)

TUNER

C D

TAPE

(1 2)

Sound control

Control del sonido

REC PAUSE

TAPE 2

(BAND)

TUNER

C D

TAPE

(1 2)

Introduzca el disco que

va a grabar.

Recording from CDs

Grabación de discos compactos

Volumen

● Volume

●

recorded.

● Load the disc to be

●

VOLUME

VOLUME

Precaution

Precaución

● Extra-BASS

El nivel de sonido en una posición de volumen

fijado depende de una combinación del

rendimiento de las altavoces, la posición y

muchos otros factores. Es aconsejable e vitar un

●

depends on a combination of speaker efficiency,

location and many other factors. It is advisable

to avoid exposure to high volume levels, which

● The sound level at a given volume setting

Graves extra

●

En este aparato sólo pueden reproducirse los

aumento de volumen. Esto se produce, por

occur while turning the unit on with the volume

discos que tengan el logotipo mostrado.

ejemplo, al conectar el aparato con el volumen

puesto en una posición alta. Evite continuar la

audición prolongada a altos niveles de sonido.

●

control setting up high, or while continually

listening at high volume levels.

played in this unit.

● Only discs bearing the logo as shown can be

X-BASS

/DEMO

X-BASS

Antena de cuadro de

AM

● AM Loop Antenna

●

MINI COMPONENT

SYSTEM

CD-C606

Left speaker

Altavoz izquierdo

Right speaker

Altavoz derecho

Preparation for use

Preparación para su uso

Black

Negro

Red

Rojo

SPEAKERS

8 OHMS MIN.

RATED SPEAKER IMPEDANCE:

Red

Rojo

Black

Negro

LEFT

RIGHT

1

POWER

POWER

Turning the power on and off

Conexión y desconexión de la alimentación

– 6 –

Remote Sensor

Remote control

Control remoto

Sensor remote

● 2 “AA” batteries

Dos pilas “AA”

●

8" - 20' (0.2m - 6m)

0,2m - 6m

15

1

15

Las pilas no están

incluidas.

included.

● Batteries are not

●

OPEN

/CLOSE

/TIME

TUNING

CD-C606/1900,CP-C606/1900

La grabación de CD

empieza.

● CD recording starts.

●

TAPE 2

TAPE 1

(BAND)

TUNER

C D

TAPE

Tape playback

Reproducción de cintas

Quick-Guide

(1 2)

Guía rápida

● Label facing up

OPEN

/CLOSE

(BAND)

TUNER

C D

TAPE

CD playback

Reproducción de discos compactos

Antena de FM

● FM Antenna

●

(1 2)

Etiqueta hacia arriba

●

Radio operation

Funcionamiento de la radio

120 V de CA, 60 Hz

● AC 120 V, 60 Hz

●

AM

FM MONO

ST

FM STERO

(BAND)

TUNER

C D

TAPE

(1 2)

Sound control

Control del sonido

REC PAUSE

TAPE 2

(BAND)

TUNER

C D

TAPE

(1 2)

Introduzca el disco que

va a grabar.

Recording from CDs

Grabación de discos compactos

Volumen

● Volume

●

recorded.

● Load the disc to be

●

VOLUME

VOLUME

Precaution

Precaución

● Extra-BASS

El nivel de sonido en una posición de volumen

fijado depende de una combinación del

rendimiento de las altavoces, la posición y

muchos otros factores. Es aconsejable e vitar un

●

depends on a combination of speaker efficiency,

location and many other factors. It is advisable

to avoid exposure to high volume levels, which

● The sound level at a given volume setting

Graves extra

●

En este aparato sólo pueden reproducirse los

aumento de volumen. Esto se produce, por

occur while turning the unit on with the volume

discos que tengan el logotipo mostrado.

ejemplo, al conectar el aparato con el volumen

puesto en una posición alta. Evite continuar la

audición prolongada a altos niveles de sonido.

●

control setting up high, or while continually

listening at high volume levels.

played in this unit.

● Only discs bearing the logo as shown can be

X-BASS

/DEMO

X-BASS

Antena de cuadro de

AM

● AM Loop Antenna

●

MINI COMPONENT

SYSTEM

CD-C1900

Left speaker

Altavoz izquierdo

Right speaker

Altavoz derecho

Preparation for use

Preparación para su uso

Black

Negro

Red

Rojo

SPEAKERS

8 OHMS MIN.

RATED SPEAKER IMPEDANCE:

Red

Rojo

Black

Negro

LEFT

RIGHT

1

POWER

POWER

Turning the power on and off

Conexión y desconexión de la alimentación

– 7 –

Remote control

Control remoto

Remote Sensor

Sensor remote

● 2 “AA” batteries

Dos pilas “AA”

●

8" - 20' (0.2m - 6m)

0,2m - 6m

15

1

15

Las pilas no están

incluidas.

included.

● Batteries are not

●

CD-C606/1900,CP-C606/1900

OPEN

/CLOSE

QUICK GUIDE

/TIME

TUNING

La grabación de CD

empieza.

● CD recording starts.

●

TAPE 2

TAPE 1

(BAND)

TUNER

C D

TAPE

Tape playback

Reproducción de cintas

Quick-Guide

(1 2)

Guía rápida

● Label facing up

OPEN

/CLOSE

(BAND)

TUNER

C D

TAPE

CD playback

Reproducción de discos compactos

Antena de FM

● FM Antenna

●

(1 2)

Etiqueta hacia arriba

●

Radio operation

Funcionamiento de la radio

120 V de CA, 60 Hz

● AC 120 V, 60 Hz

●

AM

FM MONO

ST

FM STERO

(BAND)

TUNER

C D

TAPE

(1 2)

Sound control

Control del sonido

REC PAUSE

TAPE 2

(BAND)

TUNER

C D

TAPE

(1 2)

Introduzca el disco que

va a grabar.

Recording from CDs

Grabación de discos compactos

Volumen

● Volume

●

recorded.

● Load the disc to be

●

VOLUME

VOLUME

Precaution

Precaución

● Extra-BASS

El nivel de sonido en una posición de volumen

fijado depende de una combinación del

rendimiento de las altavoces, la posición y

muchos otros factores. Es aconsejable e vitar un

●

depends on a combination of speaker efficiency,

location and many other factors. It is advisable

to avoid exposure to high volume levels, which

● The sound level at a given volume setting

Graves extra

●

En este aparato sólo pueden reproducirse los

aumento de volumen. Esto se produce, por

occur while turning the unit on with the volume

discos que tengan el logotipo mostrado.

ejemplo, al conectar el aparato con el volumen

puesto en una posición alta. Evite continuar la

audición prolongada a altos niveles de sonido.

●

control setting up high, or while continually

listening at high volume levels.

played in this unit.

● Only discs bearing the logo as shown can be

X-BASS

/DEMO

X-BASS

Antena de cuadro de

AM

● AM Loop Antenna

●

MINI COMPONENT

SYSTEM

CD-C606

Left speaker

Altavoz izquierdo

Right speaker

Altavoz derecho

Preparation for use

Preparación para su uso

Black

Negro

Red

Rojo

SPEAKERS

8 OHMS MIN.

RATED SPEAKER IMPEDANCE:

Red

Rojo

Black

Negro

LEFT

RIGHT

1

POWER

POWER

Turning the power on and off

Conexión y desconexión de la alimentación

– 6 –

Remote Sensor

Remote control

Control remoto

Sensor remote

● 2 “AA” batteries

Dos pilas “AA”

●

8" - 20' (0.2m - 6m)

0,2m - 6m

15

1

15

Las pilas no están

incluidas.

included.

● Batteries are not

●

OPEN

/CLOSE

/TIME

TUNING

CD-C606/1900,CP-C606/1900

La grabación de CD

empieza.

● CD recording starts.

●

TAPE 2

TAPE 1

(BAND)

TUNER

C D

TAPE

Tape playback

Reproducción de cintas

Quick-Guide

(1 2)

Guía rápida

● Label facing up

OPEN

/CLOSE

(BAND)

TUNER

C D

TAPE

CD playback

Reproducción de discos compactos

Antena de FM

● FM Antenna

●

(1 2)

Etiqueta hacia arriba

●

Radio operation

Funcionamiento de la radio

120 V de CA, 60 Hz

● AC 120 V, 60 Hz

●

AM

FM MONO

ST

FM STERO

(BAND)

TUNER

C D

TAPE

(1 2)

Sound control

Control del sonido

REC PAUSE

TAPE 2

(BAND)

TUNER

C D

TAPE

(1 2)

Introduzca el disco que

va a grabar.

Recording from CDs

Grabación de discos compactos

Volumen

● Volume

●

recorded.

● Load the disc to be

●

VOLUME

VOLUME

Precaution

Precaución

● Extra-BASS

El nivel de sonido en una posición de volumen

fijado depende de una combinación del

rendimiento de las altavoces, la posición y

muchos otros factores. Es aconsejable e vitar un

●

depends on a combination of speaker efficiency,

location and many other factors. It is advisable

to avoid exposure to high volume levels, which

● The sound level at a given volume setting

Graves extra

●

En este aparato sólo pueden reproducirse los

aumento de volumen. Esto se produce, por

occur while turning the unit on with the volume

discos que tengan el logotipo mostrado.

ejemplo, al conectar el aparato con el volumen

puesto en una posición alta. Evite continuar la

audición prolongada a altos niveles de sonido.

●

control setting up high, or while continually

listening at high volume levels.

played in this unit.

● Only discs bearing the logo as shown can be

X-BASS

/DEMO

X-BASS

Antena de cuadro de

AM

● AM Loop Antenna

●

MINI COMPONENT

SYSTEM

CD-C1900

Left speaker

Altavoz izquierdo

Right speaker

Altavoz derecho

Preparation for use

Preparación para su uso

Black

Negro

Red

Rojo

SPEAKERS

8 OHMS MIN.

RATED SPEAKER IMPEDANCE:

Red

Rojo

Black

Negro

LEFT

RIGHT

1

POWER

POWER

Turning the power on and off

Conexión y desconexión de la alimentación

– 7 –

Remote control

Control remoto

Remote Sensor

Sensor remote

● 2 “AA” batteries

Dos pilas “AA”

●

8" - 20' (0.2m - 6m)

0,2m - 6m

15

1

15

Las pilas no están

incluidas.

included.

● Batteries are not

●

CD-C606/1900,CP-C606/1900

CP-C606/1900

STEP REMOVAL

1 Speaker 1. Net .......................... (A1) x1 10-1

2. Duct Panel ..............(A2) x1

3. Screw...................... (A3) x4 10-2

PROCEDURE

FIGURE

CP-C606/1900

(A1)x1

(A2)x1

Speaker Box

Driver should be

Driver

pried away from
Speaker Box.

Direction of handle

Figure 10-1

REMOVING AND REINSTALLING THE MAIN PARTS

CD MECHANISM SECTION

Perform steps 1, 2, 3, and 8 ~ 12 of the disassembly method
to remove the CD mechanism.

How to remove the turntable up/down/loading
motor (See Fig. 10-3)

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

Super
Tweeter

Woofer

(A3)x4
ø3.5x13mm

Turntable Up/Down/
Loading Motor

Motor
PWB

Speaker Box

Figure 10-2

How to remove the pickup (See Fig. 10-4)

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

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

3. Remove the pickup.

Note:
After disconnecting the optical pickup connector wrap the
front end of connector in conductive aluminum foil so as to
prevent damage to the optical pickup by static electricity.

– 10 –

(B1) x2
ø2.6 x6mm

(B2) x1

(A1) x2
ø2.6 x5mm

Figure 10-3

(B3) x1

Pickup

CD Mechanism

(B4) x1

Figure 10-4

ADJUSTMENT

Pin 13 of IC303

Pin 21 of IC303

D

G

S

10 kΩ

TO FREQUENCY
COUNTER

FET : 2SK19 or 2SK54

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

CD-C606/1900,CP-C606/1900

TUNER SECTION

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

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage

IF 450 kHz 1,720 kHz T382 *1
Band — 530 kHz (fL): T333 *2

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

*1. Input: Antenna (CNP301), Output: TP301
*2. Input: Antenna (CNP301), Output: TP302

Frequency Frequency

Display

Setting/

Adjusting

Parts

Instrument

Connection

• Tape Speed

Test Tape

Adjusting

Point

Specified

Value

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

(MM1) (Load

Instrument

Connection

resistance:
8 ohms)

TAPE MECHANISM

MM 1
Motor

Volume in motor

Figure 11-1 ADJUSTMENT POINTS

IC301

11

IC302

12

C354

TP301

VR381

TP302

VCO

Figure 11-2 ADJUSTMENT POINTS

1

22

T301

12

13
C386

FM DET

FM Band
Coverage
fL

CF351

T382

IC303

24

21

T381

MAIN PWB

9

T302

FM IF

AM IF

1

CF301

1

L312

FM RF

AM Tracking
fL

T333

BF301

T331

AM Band
Coverage fL

CNP301
AM LOOP
ANTENNA

– 11 –

• FM RF

Signal generator: 1 kHz, 22.5 kHz dev., FM modulated

Test Stage

Frequency

Frequency

Display

Serring/

Adjusting

Point

Band — 87.50 MHz T301(fL): *1
Coverage 3.4 V ± 50 mV

RF 98.00 MHz 98.00 MHz L312 *2

(10-30 dB)

Instrument

Connection

*1. Input: Antenna (CNP301), Output: TP302
*2. Input: Antenna (CNP301), Output: Speaker terminal

• FM Detection

Signal generator: 10.7 MHz, FM sweep generator

Test

Frequency

Stage

Detection 10.7 MHz 98.00 MHz T381 Input: Pin 1 of

IF 10.7 MHz 98.00 MHz T302(Turn Input: Pin 1 of

Frequency

Display

Adjusting

Parts

Instrument

Connection

IC303
Output: TP302

the core of IC301
transformer Output: TP302
T381 fully
counter­clookwise.)

• VCO Frequency

Frequency

Frequency

Display

98.00 MHz 98.00 MHz VR381* Pin 13, Pin 21
(60 dB) and ground

Adjusting

Parts

Instrument

Connection

of IC303

* Adjust for 76 kHz ± 200 Hz.

Notes:

After preparing the test circuit shown in Fig 11-3, 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.

Figure 11-3

CD-C606/1900,CP-C606/1900

1 2 3

2

1

TO

TE

200 ms
1V/diV
IC 1 15

200 ms
1V/diV
IC 1 7

TRACKING/
ERROR
BARANCE
ADJUST

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 ( ) or ( ) key.

<MEMORY>

LASER ON

<MEMORY>
Tracking on the spot.
SERVO OFF PLAY

<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.

Press <STOP> key.

Stop

<Disc Number 1> key: Track 4
<Disc Number 2> key: Track 9
<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

0.1s

0.50 V
IC1 7 TE

Figure 12-2

FOCUS
OFF-SET
ADJUST

TRACKING
OFF-SET
ADJUST

1
2

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

Figure 12-4

– 12 –

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-C606/1900,CP-C606/1900

• 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

SW1 OPEN/CLOSE ON—OFF
SW2 MECHA UP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW605 TAPE 1 MAIN ON—OFF
SW606 TAPE 2 MAIN ON—OFF
SW607 TAPE 1 RECORD ON—OFF
SW608 TAPE 1 PLAY ON—OFF
SW701 POWER ON—OFF
SW702 VOLUME UP ON—OFF
SW703 VOLUME DOWN ON—OFF
SW704 PLAY ON—OFF

FRONT

VIEW

FRONT

VIEW

REF. NO DESCRIPTION

SW705 FAST FORWARD ON—OFF
SW706 REWIND ON—OFF
SW707 OPEN/CLOSE ON—OFF
SW708 STOP ON—OFF
SW709 DISC SKIP ON—OFF
SW710 X-BASS ON—OFF
SW711 FUNCTION ON—OFF
SW712 BAND ON—OFF
SW714 MEMORY ON—OFF
SW715 TUNING UP ON—OFF
SW716 TUNING DOWN ON—OFF

FRONT

VIEW

E C B
(S)(G)(D)
(1) (2) (3)

2SC2389 SE
KRA102 M
KRA109 M
KRC102 M
KRC104 M
KRC107 M
KTA1266 GR
KTA1271 Y
KTA1273 Y
KTC3194 Y
KTC3199 GR
KTC3203 Y

B C E

(D)(G)(S)

(3) (2) (1)

2SA1318

1 2 3

SVC211C
SVC348S

Figure 13 TYPES OF TRANSISTOR AND LED

– 13 –

SLI342UCJ1

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-C606/1900,CP-C606/1900

• 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

SW1 OPEN/CLOSE ON—OFF
SW2 MECHA UP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW605 TAPE 1 MAIN ON—OFF
SW606 TAPE 2 MAIN ON—OFF
SW607 TAPE 1 RECORD ON—OFF
SW608 TAPE 1 PLAY ON—OFF
SW701 POWER ON—OFF
SW702 VOLUME UP ON—OFF
SW703 VOLUME DOWN ON—OFF
SW704 PLAY ON—OFF

FRONT

VIEW

FRONT

VIEW

REF. NO DESCRIPTION

SW705 FAST FORWARD ON—OFF
SW706 REWIND ON—OFF
SW707 OPEN/CLOSE ON—OFF
SW708 STOP ON—OFF
SW709 DISC SKIP ON—OFF
SW710 X-BASS ON—OFF
SW711 FUNCTION ON—OFF
SW712 BAND ON—OFF
SW714 MEMORY ON—OFF
SW715 TUNING UP ON—OFF
SW716 TUNING DOWN ON—OFF

FRONT

VIEW

E C B
(S)(G)(D)
(1) (2) (3)

2SC2389 SE
KRA102 M
KRA109 M
KRC102 M
KRC104 M
KRC107 M
KTA1266 GR
KTA1271 Y
KTA1273 Y
KTC3194 Y
KTC3199 GR
KTC3203 Y

B C E

(D)(G)(S)

(3) (2) (1)

2SA1318

1 2 3

SVC211C
SVC348S

Figure 13 TYPES OF TRANSISTOR AND LED

– 13 –

SLI342UCJ1

CD-C606/1900,CP-C606/1900

5ms

0.50 V

1

1

IC1 20 FE

5ms

5.0 V

2

1

IC1 54 DRF

WAVEFORMS OF CD CIRCUIT

STOP PLAY

FOCUS SERCH

3
1

6

1

7

1

8

1

9

1

0.5ms

10.0 V
IC1 33 JP+

0.5ms

10.0 V
IC1 32 JP-

0.5ms

0.50 V
IC1 14 JP

0.5ms

1.00 V
IC1 7 TE

3

1

4

1

5

1

3

1

4

1

5

1

6

1

7

1

8

1

9

1

0.5ms

1.00 V
IC1 41 HF

0.5ms

5.0 V
IC1 4 HFL

0.5ms

5.0 V
IC1 36 TES

0.5ms

1.00 V
IC1 41 HF

0.5ms

5.0 V
IC1 4 HFL

0.5ms

5.0 V
IC1 36 TES

50ms

10.0 V
IC1 33 JP+

50ms

10.0 V
IC1 32 JP-

50ms

0.50 V
IC1 14 JP

50ms

1.00 V
IC1 7 TE

CUE

1
2

3

REVIEW

1
2

3

CUE

10

1

11

1

10

1

11

1

20ms

1.00 V
IC1 27 SPO

20ms

2.00 V
IC2 12 CLV+

50ms

1.00 V
IC1 27 SPO

50ms

2.00 V
IC2 12 CLV+

NORMAL DISC

PLAY

TN0=01

PLAY TCD-712 (140mm)

TN0=01

PLAY TCD-712

6

1

7

1

8

1

9

1

6

1

7

1

8

1

9

1

0.5ms

10.0 V
IC1 33 JP+

0.5ms

10.0 V
IC1 32 JP-

0.5ms

0.50 V
IC1 14 JP

0.5ms

1.00 V
IC1 7 TE

50ms

10.0 V
IC1 33 JP+
50ms

10.0 V
IC1 32 JP-

50ms

0.50 V
IC1 14 JP

50ms

1.00 V
IC1 7 TE

REVIEW

– 14 –

12

1

12

1

5s
100mV
IC1 29 SLD

0.5s
100mV
IC1 29 SLD

1

1

CD-C606/1900,CP-C606/1900

+B1

+5V

TO MAIN SECTION

(TO IC401)

2

43

41
36
23

5
6

+7V

XVDD

RVDD

LVDD

VDD

ISET

VVDD

1

40

RCHO

56

4

3

38

36

37

LVSS

LVDD

LCHO

IC2

LC78622N

SERVO/SIGNAL

44

XOUT

CONTROL

CNP11

SWITCHING

REGULATOR

Q51

27

39

RVSS

CONT4

24 25

CONT1

CONT3

CONT2

26

58

53

TO DISPLAY

SECTION

M3

TURNTABLE

UP/DOWN

LOADING

SW2

MECHA UP

SW3

SW1

OPEN/CLOSE

DISC NUMBER

MOTOR

M

–

+

SOLM2

SOLENOID

10

CNS10

CNP10

~

9

GND (D)

10

9

7

8

6

MECHA UP

GND (D)

DISK NO.

OPEN/CLOSE

7

8

6

5

4

GND (D)M–M+

5

4

2

3

1

SOL–

SOL+

2

3

1

Q52

+4.3V

+5V

Q1

LASER DRIVER

XL1

16.93MHz

VOLTAGE

REGULATOR

45

64

62

XIN

VCC1

LD0

EFMO

EFMIN

CLV+

~

10

12

9

~

32 40 4344

JP–

SLC

CV+

IC1

LA9241M

SERVO AMP.

FIN1EF

FIN2

2

3

1

/RES. /CQCK. COIN

JP–

20

CE

SL1

DAT

CL

DRF

SL+
SL–

SLD

SP

SPO

FD
TO

4

SQOUT. RWC. WRQ

53
52
51

54
31
30

29
23
27

16

15

CL, DAT, SELIAL CONTROL/CE

SL+. SL–. DRF

25
20
17

2

TRACKING/

SPIN/SLED

1

6

M2

SLED

MOTOR

M1

SPINDLE

MOTOR

+B1

+B5

18244020

IC3

M63001FP

FOCUS/

DRIVER

45

15

7

M

M

3839284142 37 36

16 26

27

23
35

~

29
22
21
14

~

8

PICKUP IN

PU-IN SW

SW4

PICKUP UNIT

FOCUS COIL

TRACKING COIL

Figure 15 BLOCK DIAGRAM (1/3)

– 15 –