ICF-C773, ICF-C773L - Sony Audio Service Manual (repair manual). Page 20

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ICF-C773/C773L
20

For schematic diagrams.
Note:
• All capacitors are in 
µF unless otherwise noted.  (p: pF) 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.
• A : B+ Line.
• H : adjustment for repair.
• Voltages are dc with respect to ground under no-signal conditions.
no mark : FM
(           ) : AM (MW)
<          > : LW
      *
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production toler-
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
• Abbreviation
CND : Canadian model.
IT
: Italian model.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each block.)

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
piéce portant le numéro
spécifié.

For printed wiring boards.
Note:
• X : parts extracted from the component side.
•
: Pattern from the side which enables seeing.
• Abbreviation
CND : Canadian model.
IT
: Italian model.
  (The other layers' patterns are not indicated.)
4-10. CIRCUIT BOARD LOCATION
KEY (R) board
KEY (L) board
KEY (MAIN) board
LCD board
MAIN board
POWER board
• WAVEFORMS
1.6 Vp-p
75 kHz
0.5V/DIV, 5 
µ
sec/DIV
1
 
IC101
 
wf
 XOUT

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