Casio ZD-1 Manuel utilisateur
(without price)
ZD-1
MD CD SYSTEM
INDEX
Model-B: U.S.A.
Model-C: Europe
SEP.1998
Specifications................................................................................................................................... 1
Disassembly Instructions ................................................................................................................. 2
Reassembly of Tuning Pointer ......................................................................................................... 4
CD Pickup Replacement .................................................................................................................. 5
Block Diagrams................................................................................................................................ 6
Tuner.......................................................................................................................................... 6
AMP ........................................................................................................................................... 7
CD.............................................................................................................................................. 8
MD Unit ...................................................................................................................................... 9
Display Unit .............................................................................................................................. 10
PS Unit ..................................................................................................................................... 10
CD MD Test ................................................................................................................................... 11
CD Adjustments ............................................................................................................................. 12
CD Troubleshooting ....................................................................................................................... 15
Operation Troubleshooting............................................................................................................. 25
PCB Views .................................................................................................................................... 26
Tuner PCB Top ........................................................................................................................ 26
AMP PCB Top.......................................................................................................................... 27
Display PCB Top/Bottom................................................................................................................ 28
MD PCB Top/Bottom...................................................................................................................... 29
CD PCB Top/Bottom ...................................................................................................................... 31
Wiring Diagram .............................................................................................................................. 33
IC Lead Identification and Internal Diagrams ................................................................................. 34
Schematic Diagrams ...................................................................................................................... 46
Tuner........................................................................................................................................ 46
AMP, PS................................................................................................................................... 47
MD ........................................................................................................................................... 48
CD............................................................................................................................................ 49
Front......................................................................................................................................... 50
Parts List ........................................................................................................................................ 51
Exploded Views.............................................................................................................................. 55
CONTENTS
When the power cord is plugged into an AC household outlet or the unit is loaded with the
batteries, Demonstration Mode starts. To cancel the Demonstration mode, press the
POWER button or hold the BBS button pressed for more than 3 seconds.
When the unit is moved to a location where the temperature is around 0 degrees C to a
warm location, the unit may not function properly. It is due to condensation generated
inside the unit. Leave the unit for about one hour to let it dry before normal operation.
IMPORTANT:
DEMONSTRATION
CONDENSATION
SPECIFICATIONS
MD SECTION
System: MiniDisc digital audio system
Laser: Semiconductor laser
Error correction: Advanced cross interleave read Solomon code (ACIRC)
Channel: 2 channels
Frequency response: 20 to 20,000Hz +/-3dB
Wow and flutter: Less than measurement limit
Recording system: Magnetic field modulation overwrite method
Coding: Adaptive Transform Acoustic Coding (ATRAC)
CD SECTION
System: Compact disc digital audio system
Laser: Semiconductor laser
Channel: 2 channels
Frequency response: 20 to 20,000Hz !3dB
Wow and flutter: Less than measurement limit
TUNER SECTION
Tuning range: FM: 88 to 108MHz
AM: 530 to 1710kHz for Model-B
: 530 to 1600kHz for Model-C
Antenna: FM: Telescopic antenna
AM: Loop antenna (supplied)
GENERAL SECTION
Dimensions: 360 (W) x 158 (H) x 244 (D)
Weight: 4.0kg (without batteries)
Power source: AC 120V, 60Hz for Model-B
: AC 230V, 50Hz for Model-C
DC 9V, 6 x “D” size (R20P)
Power consumption: 21W
Output power: 2.5 (W) + 2.5 (W)
Design and specifications are subject to change without prior notice.
1
DISASSEMBLY INSTRUCTIONS
Figure 2
2
CD Door
Top Panel Kit
CaseKit
3. Open the CD door, remove four screws B holding the case kit.
1. Remove the battery cover and batteries.
2. Remove ten screws A holding case B unit.
Figure 1
Case B Unit
Battery Cover
4. Pull out the function knob and tuning knob.
5. Remove four screws C holding the tuner unit.
6. Remove four screws D holding the AMP unit.
7. Remove nine screws E holding the CD unit.
8. Remove three screws F holding the CD mechanism set.
9. Pull out the jog knob.
10. Remove six screws G holding the MD assembly.
11. Remove seven screws H holding the display unit.
12. Remove screw I holding the LED PCB.
3
Function Knob
Tuning Knob
CD Unit
Tuner Unit
CD
Mechanism
Set
AMP Unit
Top Case Assembly
Figure 3
MD Assembly
Case Assembly
Jog Knob
LED
PCB
I
Model-C only
Figure 4
REASSEMBLY OF TUNING POINTER
1. Turn the varicon unclockwise stop position.
2. Set the pointer ;mark position. (refer figure 6)
3. Set the varicon gear of figure 6 position.
4. Insert the tuner gear, fixed the screws L ( tuner collar and tuner plate) and K. (refer figure 5)
Figure 6
4
Varicon Gear
Tuner Gear
Pointer
Mark Tuner Chassis
K
Figure 5
Varicon Gear
Pointer
Varicon
Tuner Gear
L
Tuner Chassis
CD PICKUP REPLACEMENT
Precautions
To prevent damage caused by static electricity, the following procedures for grounding is required when opening
or repairing the unit.
Short-pad on pickup PCB
[Note] After the wire connector is
connected, desolder( short-pad).
1. Grounding for the human body
Be sure to put on a wrist-strap for grounding (with impedance lower than 106Ω) whose other end is grounded.
The strap works to drain away the static electricity build-up on the human body.
2. Grounding for the work table
Be sure to lay on the table a conductive sheet (with impedance lower than 106 Ω) such as a sheet of copper
which is grounded.
3. As static electricity build-up on clothes is not drainded away, be careful not to let your clothes touch the unit.
4. The short-pad on the pick-up PCB of a spare part is short-circuited for protection during shipment. To open
the short circuit, remove the soldering quickly with a soldering iron whose insulation resistance is larger than
10MΩafter connection to a suitable APC circuit.
Pickup
1. Wrist-Strap
for grounding
1MΩ
2. Conductive Sheet
5
1MΩ
BLOCK DIAGRAMS
Tuner
6
FM
AF
AM
AF
FM
IF
AM
IF
FM
RF
AM
OSC
FM
OSC PRE VCO Decode
SW
HYS
F.F
TUN
LED ST
LED FM
DET
AM/FM
SW
Level
DET
AM
DED
AGC
AM
MIX
FM
MIX
AM
RF In
FM
RF Out VCC1
FM
OSC AM
OSC DET
Out MPX In LPF1 LPF2 VCO
GND VCC R ch L ch
FM
RF In
GND1 FM MIX AM MIX AGC VCC2AM IF
In FM IF
In GND2 QUAD
31 2 4
To Amplifier Block
22 21 20 19 18 17 16 15 14 1324 23
D3
Loop Antenna
L2 L5 L4 L3
SW1
BAND SW
AM
FM-
Stereo
FM-MONO
Rod
Antenna
L8
CF1 CF2
L9
FM Signal
AM Signal
L7
1 2 3 4 5 76 8 9 10 11 12
AMP
7
STB
DATA
CK
BBS
AFMUTE
CN402
CN403
CN400
CN401
Equalizing
Circuit
Q200/Q300
Q201/Q301
Q203/Q303
Speaker
L ch
Speaker
R ch
J400
CN402
Lipple Filter Circuit
Q400/Q401
Q402/D400
MD Power Supply
Circuit
IC404
CN403
Power
Amplifier
Circuit
IC402
Mute
Circuit
Q204
Q304
Electron
Volume
Circuit
IC401
BBS
Circuit
Q202
Q302
Q403
Q404
Q405
CN402 Record Amplifier
IC403
V-BAT. Carcuit
D417/C421/R430
PSCONT
VCC 9V
(DC 7V)
CN404
CN402
EL Drive Power Supply Circuit
Q452/D450
MD Play L ch
MD Play R ch
CD Play L ch
CD Play R ch
Tuner In L ch
Tuner In R ch
Line In L ch
Line In R ch
MD Record L ch
MD Record R ch
MD V-BAT.
MD 5.5V (DC)
EL PS 3.5V
ELCONT
CD
8
PS Unit
AC9V
VCC9V
GND
Q711
Remote
Power
Control
Amp Unit
Display Unit
MD Unit
IC705
+5V
Power
Driver
+5V
IC709
MD
Bus
Level
Shifter
IC705
System
Reset
Circuit
Q709,710
Low Battey
Detect
Circuit
Q707,903
+9V
Power
Driver
SW701
Function
SW
Q708
Power
Control
Driver
+9V +5V +9V
+9V +9V
Q704,705
CD +9V
Power
Driver
+9V
IC708
CD +5V
Power
Driver
+5V
IC704
Micro
Processor X703
16MHz
X702
32.769KHz
Q713
Door SW
Driver
SW706
Door SW
Q901,902
Mute
Circuit
IC707
Analog
Filter
IC702
Digital
Signal
Processior
X701
16.93MHz
Q702
Laser
Power
Driver
Q701
Laser
Driver
Q702,703
Anti
Traverse
Circuit IC701
Servo
Signal
Processor IC703
Motor
Driver
CD
Mechanism
Laser
Coupler
Objective
Lens
MM
Disc
Motor Sled
Motor Reset
Switch
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