Note For Printed Wiring Boards And Schematic Diagrams - Sony MDS-S40 Service Manual

• Circuit Boards Location
PT board
PANEL board
SW board
VOL SEL board (Singapore)
MAIN board
BD board
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6-4.

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.
•
: parts mounted on the conductor side.
p
•
® : Through hole.
• b : Pattern from the side which enables seeing.
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.
Q
B C E
These are omitted.
• Abbreviation
AR : Argentine model
AUS : Australian model
CND : Canadian model
HK : Hong Kong model
SP : Singapore model
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.
• % : indicates tolerance.
• ¢ : internal component.
• C : panel designation.
Note:
Note:
Les composants identifiés par
The components identi-
une marque ! sont critiques
fied by mark ! or dotted
line with mark ! are criti- pour la sécurité.
cal for safety. Ne les remplacer que par une
Replace only with part piéce por tant le numéro
number specified. spécifié.
• U : B+ Line.
• V : B– Line.
• Voltages and waveforms are dc with respect to ground in
playback mode.
• 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
: PLAY (ANALOG OUT)
j
: REC (ANALOG IN)
l : REC (DIGITAL IN)
• Abbreviation
AR : Argentine model
AUS : Australian model
CND : Canadian model
HK : Hong Kong model
SP : Singapore model
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