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• Circuit Boards Location
CD SW board
CONNECTOR board
CD DISPLAY board
CD JOG board
MD DISPLAY board
MD SW board
WM board
MD JOG board
HEAD RELAY board
SENSOR 2 board
OUT SW board
SENSOR board
DISC SW board
MECH RELAY board
SW board
BD (MD) board
MICROCOMPUTER board
MAIN board
RELAY board
CLAMP MOTOR board
BD (CD) board
IN SW board
INIT/COUNT SW board
CONNECTOR (CD) board
LOAD MOTOR board
HEAD SW board
ELEVATOR RELAY board
– 49 –
6-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
¢
•
: internal component.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
• Indication of transistor.
C
Q
These are omitted.
B
E
Q
B
C E
These are omitted.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
W or less unless otherwise
4
specified.
¢
•
: internal component.
• C : panel designation.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD PLAY (ANALOG)
k : CD PLAY (DIGITAL)
d
: MD PLAY
j
: MD REC (ANALOG IN)
l : MD REC (OPTICAL IN)
– 50 –
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