Note For Printed Wiring Boards And Schematic Diagrams - Sony MXD-D5C Service Manual

7-4.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

(In addition to this, the necessary note is printed in each block)
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Through hole.
a
• 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
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• Indication of transistor.
C
Q These are omitted.
B E
Q
B C E
These are omitted.
Q
B C E
These are omitted.
Printed wiring board of BD (CD) board is shown only for
referring, because CD base unit is replaced as a block.
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.
f
• 5 : fusible resistor.
• C : panel designation.
Note: Note:
Les composants identifiés par
The components identi-
fied by mark 0 or dotted une marque 0 sont critiques
line with mark 0 are criti- pour la sécurité.
Ne les remplacer que par une
cal for safety.
pièce por tant le numéro
Replace only with part
number specified. spécifié.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• 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.
E : MD PLAY (ANALOG OUT)
j : MD REC (ANALOG IN)
l : MD REC (DIGITAL IN)
J : CD PLAY
• Cirecuit Boards Location
CLAMP MOTOR board
SENSOR 2 board
SENSOR board
OUT SW board
INIT/COUNT SW board
LOAD MOTOR board
LED board
HP board
SW board
DISPLAY board
51 51
BD (CD) board
IN SW board
CONNECTOR board
BD (MD) board
AUDIO board
MAIN board