Sony HCD-M70, Руководство по обслуживанию

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HCD-M70
17 17
Note:
The components identi-
fied by mark
0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
6-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
• W : indicates side identified with part number.
•
f
: internal component.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
Note on Schematic Diagram:
• All capacitors are in
µ F unless otherwise noted. pF: µµ F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1 /
4
W or less unless otherwise
specified.
• f : internal component.
•
C
: panel designation.
• A : B+ Line.
• B : B– Line.
•
H
: adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 M Ω ).
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 : TUNER (FM/AM)
E
: TAPE PLAY
a
: REC
J : CD PLAY (ANALOG)
c : CD PLAY (DIGITAL OUT)
j
: MD (VIDEO)
• Abbreviation
AUS : Australian model
CND : Canadian model
KR
: Korean model
MX : Mexican model
SP : Singapore model
TH : Thai model
C
B
These are omitted.
E
Q
• Circuit Boards Location
JACK board
SWITCH board
POWER board
VIDEO board
MAIN board
TC board
CONTROL board
CD board
LOADING board