Casio CD-350S Manuale utente
CD CASSETTE SYSTEM
CD-350S
AUG. 2001
Model-B : USA
Model-C : EU
Model-G : Argentina
Model-E : Other Countries
POWER
BAND
PLAYREC REW FWO EJECT PAUSE
STOP/
MEMORY REPEAT/PRESET RANDOM/REMAIN
MULTI FUNCTION DISPLAY
COMPACT
DIGITAL AUDIO
CONTENTS
SPECIFICATIONS--------------------------------------------------------------------------------- 1
BLOCK DIAGRAMS ------------------------------------------------------------------------------ 2
ADJUSTMENTS ----------------------------------------------------------------------------------- 4
CASSETTE MECHANISM --------------------------------------------------------------- 4
TUNER ---------------------------------------------------------------------------------------- 6
CD TROUBLESHOOTING ---------------------------------------------------------------------- 8
PCB LAYOUT------------------------------------------------------------------------------------- 18
WIRING DIAGRAMS---------------------------------------------------------------------------- 20
SCHEMATIC DIAGRAMS --------------------------------------------------------------------- 21
EXPLODED VIEWS ----------------------------------------------------------------------------- 23
PARTS LIST--------------------------------------------------------------------------------------- 26
— 1 —
SPECIFICATIONS
CD PLAYER
Type ..............................................................Compact disc player with optical pick up
Number of channels......................................2 (stereo)
Frequency response .....................................20 Hz - 20 kHz, ±3 dB
Dynamic range..............................................70 dB
Total harmonic distortion...............................0.1 % (1 kHz)
S/N ratio ........................................................70 dB
Wow and flutter .............................................Unmeasurable
RADIO
Frequency range
AM ......................................................530 – 1710 kHz
FM.......................................................87.5 – 108 MHz
Antenna
AM ......................................................Ferrite-bar antenna
FM.......................................................Telescopic antenna
TAPETape speed ...................................................4.75 cm/sec.
Track format..................................................4-track, stereo
Wow and flutter .............................................0.2 % (WRMS)
S/N ratio ........................................................35 dB
GENERAL
Power consumption ......................................AC 18 W
Output power ................................................1.3 W + 1.3 W (10 % THD)
Speaker.........................................................102 mm, 8 ohms ×2
Dimensions ...................................................395 ×175 ×175 mm (WMD)
Weight...........................................................3.6 kg (with batteries)
Accessories...................................................AC power cord
User’s guide
* Specifications are subject to change without notice.
— 2 —
BLOCK DIAGRAMS
M
M
AM ANT.FM ANT.
FM RF.
L102
AM OSC.
T103
IC101
TA2104AN
FM OSC.
L103
FM/AM IFT.
T102
IC904
LPF
BA4510
TUNER MUTE
Q118, Q119
MUTE
Q904, Q905
REGULATOR
Q120
CN103
AUDIO MUTE
Q909, Q910
REGULATOR
Q403
+8V
POWER ON/OFF
+12V
Q402
REGULATOR
Q903
+5V
DIGITAL SIGNAL
PROCESSOR
IC901
TC9284BF
U-COM
IC701
TC9314F-043
LCD DISPLAY
X901
16.9344MHz
CF701
75KHz
TO AUDIO AMP. BLOCK
KEY CONTROL
DOOR SWITCH
SLT. SWITCH
DISC MOTOR
SLED MOTOR
DISC
CN901
CN702
CN902
PICKUP
MUTE
LAMP
CD
VCC1
TUNER
TAPE
GND
VCC2
TO AUDIO AMP. BLOCK
+5V
LAMP CONTROL
Q406
MOTOR AND
ACTUATOR
DRIVER
IC903
SIGNAL SERVO
AMP.
IC902
LASER
DRIVER
Q901
LAMP
10V 40mA X3
— 3 —
AC BIAS OSC.
T801
(80KHz)
REC/PLAY
AMP.
IC201
AUDIO AMP.
Q205, Q206
VOLUME
VR201
MUTE
Q301, Q302
POWER AMP.
IC301
LA4227 R. SPEAKER
PHONES
REGULATOR
+5V
Q207
REC
/PLAY
SWITCH
TAPE
MUTE
Q201, Q202 FUNCTION
SWITCH
SW301
RECTIFIER
D1101 ~ D1104
IN4001
POWER
TRANSFORMER
BATTERY
UM 1X8
DC: 12V
AC SOCKET
SWITCH
CN202 CN203
LAMP
MUTE
TU R/L CH.
VCC1
CD
TUNER
TAPE
GND
VCC2
+5V
R/P
R. CH
R/P HEAD
L. CH
CN201
— 4 —
ADJUSTMENTS
CASSETTE MECHANISM
General Remarks
• Before attempting to adjust the mechanism, wipe clean all tape-contacting surfaces (pinch roller, REC/PB
head, erase head, and capstan), as well as the contact surfaces of the driving parts (motor pulley, flywheel,
pulley, belt, and clutch assembly), with a piece of soft cloth moistened with denatured alcohol. Grease stains
may cause trouble.
• Never use a magnetized screwdriver for head adjustment.
Equipment Required
• Oscilloscope
• Frequency counter
• Screwdriver (Plastic type)
• Test tapes MTT-113C (TEAAC) or TCC-111N (TEAC)
Head Azimuth Adjustment (Figures 1 and 2)
Set
Headphone jack
Note: Mode Switch is X--Y position.
B
A
Step
1
Setting
Play the test tape 8 KHz
Position (MTT-113C)
Adjust
Azimuth screw
(Figure 2)
Result
Obtain the maximum amplitude
(A: Maximum) (B: Minimum)
Figure 1
Figure 2
Adjust Screw P/R Head
— 5 —
Tape Speed Adjustment (Figures 3 and 4)
Step
1
Setting
Play the test tape
(MTT-111N)
Adjust
Motor screw
(Figure 4)
Result
Frequency counter reading should be
3000 Hz (2940 ~ 3060).
Figure 3
Frequency CounterSET
Headphone Jack 3000
Figure 4
Motor
Screw
— 6 —
TUNER
General Remarks
• When aligning the range and adjusting tracking, proceed with alignment in a sequence of AM--FM.
• Use a screwdriver with a plastic grip for all alignments.
Equipment Required
• AM signal generator (AM SG)
• Loop antenna
• Output meter
• Oscilloscope
• FM signal generator (FM SG)
• Screwdriver (Plastic type)
• Dummy load 32 ohm
AM SG Set
GND
60 cm Bar
Antenna
Output meter Oscilloscope
Headphone jack
Dummy load 32 ohm
MW Alignment (Figures 5)
AM IF Alignment (Figures 5)
Step Alignment
IF calibration
Tuning dial
setting
999 KHz/
1000 KHz
Remarks
Obtain sine-wave and
maximum amplitude
Frequency of
signal generator
450 KHz
Adjustment
T102
Max.
Max.
Step
1
2
1
2
3
Alignment
Tuning range
calibration
Adjustment of
tracking
Tuning dial
setting
Low end
High end
600 KHz/
612 KHz
1400 KHz/
1404 KHz
Remarks
Confirm : 1.4 V ±0.05 V
Confirm : 7.5 V ±0.4 V
Obtain sine-wave and
maximum amplitude
Frequency of
signal generator
522/530 KHz
1620/1710 KHz
600/612 KHz
1404/1400 KHz
Adjustment
T102
—
MW COIL
(Bar Antenna)
CT103
Repeat the above adjustment
Figure 5
— 7 —
FM Alignment (Figures 6)
FM IF Alignment (Figures 6)
Step Alignment
IF calibration
Tuning dial
setting
98.1 MHz
Remarks
Obtain sine-wave and
maximum amplitude
Frequency of
signal generator
10.7 MHz
Adjustment
(Non-
adjustment)
Max.
Max.
Step
1
2
1
2
3
Alignment
Tuning range
calibration
Adjustment of
tracking
Tuning dial
setting
Low end
High end
90.1 MHz
106.1 MHz
Remarks
Confirm : 20 V ±0.1 V
Confirm : 6.5 V ±0.2 V
Obtain sine-wave and
maximum amplitude
Frequency of
signal generator
87.5 MHz
108 MHz
90.1 MHz
106.1 MHz
Adjustment
L103
—
L102
CT101
Repeat the above adjustment
FM SG
GND
FM ANT.R2
R1 FM GND
Output meter Oscilloscope
Headphone jack
Dummy load 32 ohm
R1 = Output impedance of FM SG
R2 = 75 ohm - R1/2 ohm
SetFM dummy load
Figure 6
— 8 —
CD TROUBLESHOOTING
Open the CD door and set the
function switch for CD position.
Is “00” display
on LCD?
Is total track
number displayed?
Is the audio signal
present at the output
terminals?
Can a selected
music be searched
smoothly?
No
(See page9)
No
No
No
1
2
3
4
Yes
Yes
Yes
Yes
Load a disc and close the CD door.
Press “ / ” button.
Press “ ” or “ ” button.
OK
(See page17)
(See page16)
(See page9)
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