Diagrams; Circuit Boards Location - Sony ICF-CD830 Service Manual

ICF-CD830/CD830L
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
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.
Note:
Note:
Les composants identifiés par
The components identi-
fied by mark ! or dotted une marque ! sont critiques
line with mark ! are criti- pour la sécurité.
cal for safety. Ne les remplacer que par une
piéce por tant le numéro
Replace only with part
spécifié.
number specified.
no mark : FM
( ) : AM (MW/LW)
< > : CD
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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

5-1. CIRCUIT BOARDS LOCATION

10
SECTION 5

DIAGRAMS

W or less unless otherwise
TRANSFORMER board
LED board
• Waveforms
1
IC401 ud (XT1)
3.4 Vp-p
31 ms
1.0 V/DIV, 20 m s/DIV
2
IC501 ed (RF0)
(PLAY MODE)
0.9 – 1.3 Vp-p
0.2 V/DIV, 500 ns/DIV
3
IC551 ua (XTA0)
5.6 Vp-p
59 ns
2.0 V/DIV, 40 ns/DIV
MOTOR (6P) board
MAIN board
KEY board