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CDC1800
Service Manual
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AIWA CDC1800 Service Manual

CD-C1800/C,CP-C1800
SERVICE MANUAL
No. S5835CDC1800C
CD-C1800 CD-C1800C CP-C1800
CD-C1800 and CP-C1800 constitute CD-C1800. CD-C1800C and CP-C1800 constitute CD-C1800C.
• 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 machine CD-C1800/CD-C1800C,CP-C1800 is a modification of CD-C406/CD-C406C,CP-C406 by providing the Front Panel. Its performance and operation are identical with those of CD­C406/CD-C406C,CP-C406. For details refex fo the service manual (No. S1810CDC406//) for CD-C406/CD-C406C,CP-C406.
CD-C406/CD-C406C,CP-C406
ADJUSTMENT ......................................................................... 9
NOTES ON SCHEMATIC DIAGRAM .................................... 11
TYPE OF TRANSISTER........................................................ 11
WAVEFORMS OF CD CIRCUIT............................................ 12
BLOCK DIAGRAM ................................................................. 13
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD... 16
VOLTAGE .............................................................................. 28
TROUBLESHOOTING........................................................... 29
FUNCTION TABLE OF IC...................................................... 33
FL DISPLAY........................................................................... 39
PARTS GUIDE.............................. (INTEGRATED CIRCUITS ~
CD MECHANISM PARTS/P.W.B. ASSEMBLY)
EXPLODED VIEW ........ (CD MECHANISM EXPLODED VIEW)
CONTENTS OF CD-C1800/CD-C1800C,CP-C1800
IMPORTANT SERVICE NOTES (FOR CD-C1800 ONLY) ................................................................................................ 2
SPECIFICATIONS ............................................................................................................................................................. 2
NAMES OF PARTS ........................................................................................................................................................... 3
RESETTING THE MICROCOMPUTER............................................................................................................................. 4
QUICK GUIDE ................................................................................................................................................................... 5
DISASSEMBLY.................................................................................................................................................................. 6
REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 8
PARTS GUIDE/EXPLODED VIEW PACKING OF THE SET (FOR CD-C1800 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-C1800/C,CP-C1800
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.
IMPORTANT SERVICE NOTES (FOR CD-C1800 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
0.15µF
TEST PROBE
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.
CONNECT TO KNOWN EARTH GROUND
CD-C1800/CD-C1800C
SPECIFICATIONS
● General
Power source: AC 120 V, 60 Hz Power consumption: 40 W Dimensions: Width; 10-5/8" (270 mm)
Height; 11-1/16" (280 mm) Depth; 13-3/4" (348 mm)
Weight: 9.5 lbs. (4.3 kg)
● Amplifier section
Output power: (CD-C1800)
Output power: (CD-C1800C)
Output terminals: Speakers; 8 ohms
● Tuner section
Frequency range: FM; 87.5-108 MHz
10 watts minimum RMS per channel into 8 ohms from 100 Hz to 20 kHz, 10 % total har­monic distortion
MPO; 36 W (18 W + 18 W (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: 50 dB (TAPE 1, recording/
playback) 55 dB (TAPE 2, 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-con-
ductor laser pickup
D/A converter: 1-bit D/A converter Frequency response: 20 - 20,000 Hz Dynamic range: 90 dB (1 kHz)
CP-C1800
● Speaker section
Type: 2-way type [4" (10 cm) woofer
and super tweeter]
Maximum input power: 20 W Impedance: 8 ohms Dimensions: Width; 6-11/16" (170 mm)
Height; 11-1/16" (280 mm) Depth; 5-15/16" (151 mm)
Weight: 3.1 lbs. (1.4 kg)/each
Specifications for this model are subject to change without prior notice.
– 2 –
CD-C1800/C,CP-C1800
CD-C1800/CD-C1800C
■ Front panel
11.
Disc Tray
12.
CD Play Indicator:
13.
Disc Number Indicators
14.
FM Stereo Mode Indicator: ST
15.
Extra Bass Indicator: X-BASS
16.
Memory Indicator
17.
CD Pause Indicator:
18.
CD Repeat Indicator:
19.
FM Stereo Indicator:
NAMES OF PARTS
23 4
7
123
1
ST
5
X-BASS
6
MEMORY
10.
Power Button
11.
Memory Button
12.
Extra Bass Button: X-BASS
13.
Volume Up/Down Buttons: /
14.
Function Selector Button
15.
Band Selector Button
16.
Tuning Up/Down Buttons: /
17.
(CD) Track Down/Review Button: /
3
(TUNER) Preset Down Button:
18.
Stop Button:
19.
Play/Repeat Button: /
20.
(CD) Track Up/Cue Button: /
3
(TUNER) Preset Up Button:
21.
Disc Skip Button
22.
Open/Close Button:
23.
Headphone Socket
8
9
10 11 12 13
14
15
16 17 18 19 20 21 22 23
24.
(TAPE 1) Cassette Compartment
25.
(TAPE 2) Cassette Compartment
26.
(TAPE 1) Record Button:
27.
(TAPE 1) Play Button:
28.
(TAPE 1) Rewind Button:
29.
(TAPE 1) Fast Forward Button:
30.
(TAPE 1) Stop/Eject Button: /
31.
(TAPE 2) Play Button:
32.
(TAPE 2) Stop/Eject Button: /
– 3 –
24
25
262728 2930 31 32
CD-C1800/C,CP-C1800
CD-C1800/CD-C1800C
■ Rear panel
11.
AC Power Input Socket
12.
Speaker Terminals
13.
FM/AM Loop Aerial Socket
CP-C1800
● Speaker section
1
3
2
4
14.
Super Tweeter
15.
Woofer
16.
Bass Reflex Duct
17.
Speaker Wire
CD-C1800/CD-C1800C
■ Remote control
11.
Remote Control Transmitter LED
12.
Stop Button:
13.
(CD) Track Down/Review Button: /
3
(TUNER) Preset Down Button:
14.
(CD) Track Up/Cue Button: /
3
(TUNER) Preset Up Button:
15.
Play/Repeat Button:
16.
Disc Skip Button
17.
Pause Button:
18.
Memory Button
19.
Clear Button
10.
Extra Bass Button: X-BASS
11.
Function Selector Buttons
12.
Power Button
13.
Volume Up/Down Buttons: /
5
6
7
1
5
2 3
6 7
4
89
10
11
12 13
RESETTING THE MICROCOMPUTER
1,2,3
2
Reset the microcomputer by performing the following procedure for the cases shown below:
● To erase all of the stored memory contents, or
● If the display does not function properly, or
● The unit does not operate properly.
1
Press the POWER button to turn the power off.
2
Press and hold down the POWER button and the ■ button at the same time. Hold them down for at least 1 second.
3
Press the POWER button to turn the power on.
Caution:
● The operation explained above will erase all data stored in memory including tuner and CD presets.
– 4 –
QUICK GUIDE
CD-C1800/C,CP-C1800
MINI COMPONENT SYSTEM
CD-C1800
Preparation for use
Preparación pa ra su uso
● FM Antenna
●
Antena de FM
● Right Speaker
●
Altavoz derecho
● Connect the wire with the white line to the minus (−) terminal and the plain wire to the plus (+) terminal.
●
● AC 120 V, 60 Hz
●
120 V de CA, 60 Hz
Conecte el cable con la línea blanca al terminal negativo (-) y el cable sin línea al terminal positivo (+).
CD playback
Reproducción d e discos compactos
FUNCTION
● "Cd" will appear in the display.
●
"Cd" aparecerá en el visualizador.
OPEN /CLOSE
● Label facing up
●
Etiqueta hacia arriba
● AM Loop Antenna
●
Antena de cuadro de AM
OPEN /CLOSE
● Left Speaker
●
Altavoz izquierdo
Turning the power on and off
Conexión y desconexión de la alimentación
POWER
POWER
Quick-Guide Guía rápida
Remote control
Control remoto
● 2 "AA" batteries
●
Dos pilas "AA"
● Batteries are not included.
●
Las pilas no están incluidas.
Precaution
● The sound level at a given volume setting depends on a combination of speaker efficiency, location and many other factors. It is advisable to avoid exposure to high volume levels, which occur while turning the unit on with the volume control setting up high, or while continually listening at high volume levels.
● Only discs bearing the logo as shown can be played in this unit.
Remote Sensor
Sensor remote
8" - 20' (0.2m - 6m)
0,2m - 6m
15
15
Recording from CDs
Grabación de dis cos compactos
● Load the disc to
FUNCTION
● "Cd" will appear in the display.
●
"Cd" aparecerá en el visualizador.
be recorded.
●
Introduzca el disco que va a grabar.
TAPE 1
Tape playback
Reproducc ión de cintas
FUNCTION
● "Tape" will appear in the display.
●
"Tape" aparecerá en el visualizador.
STOP/EJECT PLAY STOP/EJECT
TAPE 1 TAPE 2
Radio operation
Funcionamiento de la radio
FUNCTION
● "Tuner" will appear in the display.
●
"Tuner" aparecerá en el visualizador.
BAND
FM STEREO
FM MONO
AM
ST
RECORD
TUNING TUNING
● CD recording starts.
●
La grabación de CD empieza.
● Volume
●
● Extra-BASS
●
●•
El nivel de sonido en una posición de volumen fijado depende de una combinación del
STOP/EJECT
rendimiento de las altavoces, la posición y muchos otros factores. Es aconsejable evitar un aumento de volumen. Esto se produce, por ejemplo, al conectar el aparato con el volumen puesto en una posición alta. Evite continuar la audición prolongada a altos niveles de sonido.
●•
En este aparato sólo pueden reproducirse los discos que tengan el logotipo mostrado.
Sound control
Control del sonido
Volumen
VOLUME UP • • •
X-BASS
DOWN •
Graves extra
VOLUME UP • • •
X-BASS
DOWN •
Precaución
VOLUME
X-BASS
TINSZ0318AWZZ
A9803.YT
– 5 –
Printed in Malaysia
Impreso en Malaysia
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