Sony DREAM MACHINE ICF-CD830, Руководство по обслуживанию

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10
ICF-CD830/CD830L
SECTION 5
DIAGRAMS
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• : Pattern from the side which enables seeing.
Note on Schematic Diagrams:
• 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 /
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
H
: adjustment for repair.
•
A
: B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : AM (MW/LW)
<
> : CD
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: FM
f
: AM (MW/LW)
J
: CD
• Abbreviation
AUS : Australian model
CND : Canadian model
IT
: Italian model
SP : Singapore model
Note:
The components identi-
fied by mark
! or dotted
line with mark ! are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
! sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
5-1. CIRCUIT BOARDS LOCATION
• Waveforms
0.2 V/DIV, 500 ns/DIV
1.0 V/DIV, 20 m s/DIV
2.0 V/DIV, 40 ns/DIV
1
IC401
ud
(XT1)
2
IC501
ed
(RF0)
(PLAY MODE)
3
IC551
ua
(XTA0)
3.4 Vp-p
31 ms
0.9 – 1.3 Vp-p
5.6 Vp-p
59 ns
MAIN board
LED board
TRANSFORMER board
MOTOR (6P) board
KEY board