Casio ZD-3 Manuel utilisateur
(without price)
ZD-3
MD CD SYSTEM
SEP. 2000
INDEX
Specifications................................................................................................................................... 1
Disassembly Instruction ................................................................................................................... 2
Reassembly of Tuning Pointer ......................................................................................................... 5
Block Diagrams................................................................................................................................ 6
Tuner.......................................................................................................................................... 6
AMP ........................................................................................................................................... 7
MD ............................................................................................................................................. 8
CD.............................................................................................................................................. 9
VR, Display, PS........................................................................................................................ 10
CD Pickup Replacement ................................................................................................................ 11
Tuner Adjustments ......................................................................................................................... 12
Troubleshootings............................................................................................................................ 16
CD............................................................................................................................................ 16
MD ........................................................................................................................................... 25
PCB Views ..................................................................................................................................... 30
Tuner/SW PCB Top View ......................................................................................................... 30
AMP/Jack PCB Top View ......................................................................................................... 31
VR PCB Top View .................................................................................................................... 32
PS/SW A/SW B PCB Top View................................................................................................ 33
CD/Door PCB Top/Bottom Views ............................................................................................. 34
Display PCB Top/Bottom Views ............................................................................................... 36
BD PCB Top/Bottom Views ...................................................................................................... 37
Wiring Diagram .............................................................................................................................. 39
IC Lead Identification and Internal Diagrams ................................................................................. 40
Schematic Diagrams ...................................................................................................................... 57
Tuner........................................................................................................................................ 57
AMP ......................................................................................................................................... 58
CD............................................................................................................................................ 59
MD ........................................................................................................................................... 61
VR, LCD................................................................................................................................... 63
Exploded Views.............................................................................................................................. 64
Unit Assembly .......................................................................................................................... 64
Case Unit ................................................................................................................................. 67
Top Case Unit .......................................................................................................................... 68
MD Mechanism Unit................................................................................................................. 69
CD Mechanism ........................................................................................................................ 70
Parts List ........................................................................................................................................ 71
CONTENTS
1
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 20,000 Hz !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
Fequency response: 20 to 20,000 Hz !3dB
Wow and flutter: Less than measurement limit
TUNER SECTION
Tuning range: FM: 88 to 108 MHz
AM: 530 to 1,600 kHz
Antenna: FM: Telescopic antenna
AM: Loop antenna (supplied)
GENERAL SECTION
Dimensions: 354 (W) x 155 (H) x 253 (D)
Weight: 3.7 kg (without batteries)
Power source: AC 230V, 50 Hz
DC 12V, 8 x “D” size (LR20)
Power consumption: 22W
Output power: 2.0 (W) + 2.0 (W)
Accessories: AC power cord
AM loop antenna
Instruction manual
Design and specifications are subject to change without prior notice.
IMPORTANT: This product is capable of substantial uses
that do not constitute infringement under the copyright
laws. It is sold for such uses, and it should not be used to
infringe the copyrights of others.
DISASSEMBLY INSTRUCTIONS
1. Remove the battery cover.
2. Remove eight screws A holding the case B unit.
3. Open the CD door and remove three screws B holding the case ass’y.
2
Case B ass’y
CD door
Top case ass’y
Case ass’y
A
A
A
B
B
D
D
C
E
F
F
3
4. Remove four screws C holding the MD holder A
and MD mechanism ass’y.
5. Remove five screws D holding the display unit.
6. Remove the three PCB supports holding AMP
PCB. (reffer figure)
Display unit
MD Holder A
MD Mechanism ass’y
AMP PCB ass’y
PCB
support
Case ass’y
Pinch the under PCB supports.
7. Remove four screws E holding the front panel ass’y.
8. Remove eight screws F holding the SP panel ass’y.
Case ass’y
SP panel ass’y
Front panel ass’y
G
M
M
LL
K
H
J
J
9. Pull out the two volume key ass’y, function key and band key.
10. Remove screw G holding the door SW PCB.
11. Remove six screws H holding the CD unit ass’y.
12. Remove four screws J holding the ESD spacer and tuner unit ass’y.
13. Remove five screws K holding the VR unit ass’y.
14. Remove two screws L holding the CD mechanism stopper.
15. Remove for screws M holding the CD mechanism ass’y.
4
Volume key ass’y Function key
Band key
Volume key ass’y
Door SW PCB
VR unit ass’y
Tuner unit ass’y
CD
mechanism
ass’y
CD mechanism
stopper
CD
mechanism
stopper
ESD spacer
CD unit ass’y
Top case ass’y
1
2
3
4
5
REASSEMBLY OF TUNING POINTER
1. Turn the varicon unclockwise stop position.
2. Set the tuner gear figuer position and fixed the screw.
3. Fixed the tuner chassis on the tuner PCB. (three screws)
4. Set the pointer to the tuner chassis mark position.
5. Fixed the tuner shaft screw A.
Tuner shft
Tuner gear
Mark
Pointer
Tuner chassis
Tuner PCB
Screw A
5
Varicon
BLOCK DIAGRAMS
TUNER
6
Decode
TUN
LED ST
LED
Level
DET
AM RF
In FM RF
Out RF VCC FM
OSC AM
OSC DET
Out MPX
In LPF1
LPF2
GND VCC R ch L ch
FM
RF In RF
GND AM Low
Cut MIX Out AGC VCC AM IF
In FM IF
In GND QUAD
To Amplifier Block
19 18 17 16 15 14 1324
Bar
Antenna
L1 L4 L3
SW1
BAND SWAM
FM-
Stereo
FM-MONO
FM
Antenna
CF1 CF2
FM Signal
AM Signal
L6
134 5 76 8910 11 12
AM
MIX
FM
RF
23 2122
FM
OSC
20
AM
OSC
FM
MIX
2
AGC
AM
DET
FM
Mute
AF
BUFF
AM
IF FM
IF
FM
DET
AF
VCO
Divice
ST/MO
FM/AM
CF3
TUN
LED ST
LED
31 2 4
CN3
AM Loop Antenna
SURROUND
BBS
AFMUTE
CN303
CN301
CN302
Equalizing
Circuit
Q101, Q201
Speaker
L ch
Speaker
R ch
J301
Lipple Filter Circuit
Q303, Q304
MD Power Supply
Circuit
IC303
CN307
Power
Amplifier
Circuit
IC302
Mute
Circuit
Q104,
Q204
BBS
Circuit
IC301
CN303 Record Amplifier
IC300
(DC 7V)
CN301
CN303
MD Play L ch
MD Play R ch
CD Play L ch
CD Play R ch
Tuner In L ch
Tuner In R ch
MD Record L ch
MD Record R ch
MD 5V (DC)
Rotary
Volume
CN304
Surround
Circuit
Q301, Q302
AMP
7
CN301
RX1
From CD DOUT
BD UNIT
MDOUT L
ADIN L
AGND
ADIN R
MDOUT R
DGND
HGND
MGND
D+5V
H+5V
M+5V
CN601
MD MUTE
RXD
TXD
RTS
RST
P DOWN
CTS
TEMP DET
CN402
H+5V
M+5V
D+5V
D+3V
A+3V
Power
Supply
IC601
DRAM
IC302
AD/DA
IC501
LPF
IC502
DSP
IC301
System
Control
IC401
RF-AMP
IC101
EEPROM
IC402
OPT
PU
M+5V
Motor
Driver
IC202
M
Loading
FO
TR
CN401 CN201
M
M
Spindle Sled
CN401
PROTECT
REFRECT
CHACK IN
REC P
PB P
LIMIT IN
M+5V
H+5V
Head Coil
Driver
IC102, Q105,
Q106
Motor
Driver
IC402
CN102
MD MECHA UNIT
OW Head
MD
8
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