Note For Printed Wiring Boards And Schematic Diagrams - Sony MDS-JA20ES Service Manual

6-3.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

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.
¢
• 2 : nonflammable resistor.
• C : panel designation.
Note:
Note:
The components identi- Les composants identifiés par
fied by mark ! or dotted une marque ! sont critiques
pour la sécurité.
line with mark ! are criti-
Ne les remplacer que par une
cal for safety.
piéce portant le numéro
Replace only with part
number specified. spécifié.
• U : B+ Line.
• V : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : STOP
( ) : PLAY
〈〈 〉〉 : REC
• 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
: PB
j
: REC
p : PB (Digital out)
l : REC (Digital in)
• Abbreviation
CND : Canadian model.
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• 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
B E
Q
B C E
• Abbreviation
CND : Canadian model.
– 40 –
These are omitted.
These are omitted.