PC board shown are viewed from parts side.
The parts with no reference number or no parts number
in the exploded views are not supplied.
As regards the resistors and capacitors, refer to the
circuit diagrams contained in this manual.
Parts marked with this sign are safety critical
components. they must be replaced with identical
ensure exact replacement.
!
components - refer to the appropriate parts list and
MICRO Hi-Fi SYSTEM
2 SPECIFICATIONS
4
4 EXPLODED VIEW AND PARTS LIST
5 PC BOARDS AND PARTS LISTS
6 WIRING DIAGRAM
7 INCLUDED ACCESSORIES
3 ADJUSTMENT AND CHECKS
3
11
19
21
[T/C]: USA/CANADA - CD-X8/MC-DX20B
Parts of [ ] mark can be used only with the version designated.
1 SAFETY INFORMATION
.............................. 2
6
[EX/M]: S. AMERICA - MC-DX20S
1 SAFETY INFORMATION
2
CD-X8/MC-DX20
USE OF CONTROLS OR ADJUSTMENT OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY
HAZARDOUS RADIATION EXPOSURE.
RESULT IN
SAFETY INFORMATION
This product has been designed and manufactured according to FDA regulations " title 21, CFR, chapter 1,subchapter J,based on
The Radiation Control for Health and Safety Act of 1968" and is classified as class 1 laser product. There is not hazardous
invisible laser radiation during operation because invisible laser radiation emitted inside of this product is completely confined
in the protective housings. The label required in this regulation is shown
.
1
CAUTION
DO NOT REMOVE THE PROTECTIVE HOUSING USING SCREWDRIVER.
IF THIS PRODUCT DEVELOPS TROUBLE, MAKE A CONTACT WITH OUR SERICEMAN, AND DO NOT USE THE PRODUCT A TROUBLED
Optical pickup:
Type
: CMS-M95BG6
Laser output : Less than 0.5 mW on the objective lens
Wavelength : 760 -800 nm
Manufacturer : Samsung Electro-Mechanic
STATE.
1
FOR U.S.A.
XXXX
AUDIO PRODUCT
LISTED
R
2 SPECIFICATIONS
Amplifier Section
Output Power (L+R)
5W + 5W
Tuner Section (FM)
Frequency Range
87.5 MHz to 108.0 MHz
Input Sensitivity
300mV
Output Power Subwoofer: 15 W
Frequency Response :
50 to 20,000 Hz
Sensitivity (S/N30dB)
20dBuV/m
Tuner Section (AM)
Frequency Range
520 to 1710 kHz
Sensitivity (S/N20dB)
54dBuV/m
CD Player Section
Frequency Responce
20 to 20,000 Hz (+/-1dB)
Signa-to-Noise Ratio
55 dB
L & R speaker :
SPEAKER SYSTEM Section
Impedance :
Subwoofer:
4 ohms
Type :
Full range flat type
8 ohms
Wow and Flutter
Unmeasurable
Impedance :
Design and specifications are subject to change without notice.
Illustrations may differ slightly from production models.
Weight and dimensions are approximate.
CD-X8/MC-DX20
3
3
Power Requirements:
120V AC, 60Hz - (USA/Canada model)
GENERAL
Dimension (W x H x D ):
Weight: (net)
Standard Accessories:
Main Unit
160 x 226 x 86 mm
Main Unit
0.96 kg
Power Consumption:
80 W
L & R Speaker 140 x 226 x 61mm
Speaker Cable x 2
Subwoofer
160 x 234 x 330mm
L & R Speaker 0.6 kg(each)
Subwoofer
5.3 kg
AM Antenna x 1
FM Antenna x 1
Battery for Remote Control x 1
Wall Mount Adaptor x 3
Remote Control Unit (RC-962) x 1
Wall Mount screw x 10
Subwoofer Cable x 1
Tape Plastic Wall Anchor x 10
Template for Wall Mounting x 1
Owner s Manual x 1
Warranty Card x 1
120/230V, AC,50-60 Hz (General export model)
3 ADJUSTMENTS AND CHECKS
Use a screwdriver with a plastic or ceramic grip for all adjustment.
3-1 TUNER SECTION
1. Set the function switch to the AM position.
2. Connect the test loop antenna across the output of the signal generator.
3. Connect the oscilloscope to the speaker terminal.
4. Set the signal generator as listed in the alignment chart.
3-1-2 AM adjustment
1. Set the function switch to the FM position.
2. Connect the signal generator output through a 75 ohm dummy
3. Connect the oscilloscope to the speaker terminal.
4. Set the signal generator as listed in the alignment chart.
3-1-1 FM adjustment
antenna to "ANT" on MAIN PCB.
3-2 Adjustment and Test Points
4
CD-X8/MC-DX20
CD-X8/MC-DX20 MAIN(TUNER) PCB
T205
L201
T204
SVC202
L202
SVC201
T203
T206
3-2-1 FM/AM alignment chart
ITEM
ADJUSTMENT POINT
ADJUSTMENT
SG SETTING
TUNER SETTING
2. FM band
3. Tracking
3. Tracking
106MHz
106MHz
Repeat step 3
87.5MHz
87.5MHz
1kHz, +/-22.5kHz dev.
1kHz, +/-22.5kHz dev.
L202
SVC201
FM
Adjust for max. output
and best waveform.
1. IF adjustment
2. AM band
455kHz
600kHz
1400kHz
1kHz, 30% mod
1kHz, 30% mod
1kHz, 30% mod
1kHz, 30% mod
T203
AM
Center for max. output.
Adjust for max. output
and best waveform.
3-3 CD SECTION
Auto alignment.
AM ant coil (T204)
520kHz
600kHz
1400kHz
1710kHz
90MHz
90MHz
1kHz, +/-22.5kHz dev.
L201
T206
Repeat step 3
SVC202
CD-X8/MC-DX20
5
1.IFT adjustment
10.7 MHz
1kHz, +/-22.5kHz dev.
T205
108MHz
With 10.7 MHz at
zero crossover
520kHz