Diagrams; Note For Printed Wiring Boards And Schematic Diagrams - Sony HCD-EP30 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
6-1.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
• W : indicates side identified with part number.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
T E
L 1 3 9 4 2 2 9 6 5 1 3
w w w
.
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SECTION 6

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.
• 2 : nonflammable 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.
cal for safety. Ne les remplacer que par une
Replace only with part pièce por tant le numéro
number specified. spécifié.
• A : 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.
F : FM
f : AM
E : TAPE PLAY
a : RECORD
J : CD PLAY
• Abbreviation
AUS : Australian model
CND : Canadian model
x a o
y
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8
• Circuit Boards Location
HEADPHONE board
Q Q
3 7 6 3 1
u 1 6 3
.
15 15
2 4
9 9 8
MAIN board
5 1 5 0 8 9 2 4 9
CASSETTE board DISPLAY board
m
c o
HCD-EP30/EP40
2
9 9
POWER board
8 2 9 9