CASIO PZ-700 Service Manual
PZ-700
(without price)
INDEX
Model-C: Europe
Model-E: Other Countries
PORTABLE CD PLAYER
CONTENTS
Disassembly Instructions.............................................................................................................. 1
CD Adjustment ............................................................................................................................... 2
Block Diagram ................................................................................................................................ 3
Troubleshooting............................................................................................................................. 4
PCB Views ...................................................................................................................................... 7
CD AMP PCB Top View.............................................................................................................7
CD AMP PCB Bottom View........................................................................................................ 8
Wiring Diagram............................................................................................................................... 9
Schematic Diagram...................................................................................................................... 10
Parts List....................................................................................................................................... 11
Exploded View.............................................................................................................................. 13
DISASSEMBLY INSTRUCTIONS
1. Remove four screws A holding the top case.
2. Remove the CD mechanism.
3. Remove the CD AMP PCB.
Upper case
CD mechanism
CD AMP PCB
Lower case
A
A
A
A
1
CD ADJUSTMENT
Precautions
To prevent damage caused by static electricity, the following procedures for grounding is requir or repairing the
unit.
Shorting tab
Desolder here
Pickup
[Note] Remove the connection after installed.
1. Wrist-Strap
for grounding
1MΩ
1MΩ
Pickup
2. Conductive Sheet
1. Grounding for the human body
Be sure to put on a wrist-strap for grounding (with impedance lower than 106 Ω) 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
10MΩ after connection to a suitable APC circuit.
Equipment Required
* Multi Meter
* Oscilloscope
* Compact Disc
* Dummy Load 10 kΩ
2
CD Mechanism
BLOCK DIAGRAM
Pickup
Spindle
Motor
Disc
Super 1chip digital servo processor
MN662740RE
Head AMP
AN8806SB
M
Driver
AN8819NFB
Digital Signal
Processing
Digital Servo
Processing
DF-DAC
TX
L ch
R ch
Microcomputer
MN150413 (4 bits)
LCD KEY
3
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