Note For Printed Wiring Boards And Schematic Diagrams - Sony MXD-D40 Service Manual
Compact disc minidisc deck
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Also See for MXD-D40:
- Operating instructions manual (52 pages) ,
- Limited warranty (1 page)
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MXD-D40
6-4.
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
•
: 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.
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.
• A : B+ Line.
• B : 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
• Circuit Boards Location
LF board (Singapore model)
BD (CD) board
LOADING board
PW SW board
DISPLAY board
50
50
TRANS board (EXCEPT Singapore model)
TRANS (SP) board (Singapore model)
MAIN board
BD (MD) board
LP LED board
HP board
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