ICF-CD873L (serv.man2) - Sony Audio Service Manual (repair manual). Page 2

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2
ICF-CD873L
1.
DIAGRAMS
1-1.
NOTE  FOR  PRINTED  WIRING  BOARDS AND  SCHEMATIC 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
/
4
 
W or less unless otherwise
specified.
•
f
: internal component.
• 5 : fusible resistor.
• C : panel designation.

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.
•
z
: Through hole.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Signal path.
F
: FM
f
: AM
J
: CD
• A : B+ Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
) : AM
[
] : CD PLAY
• 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.

Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.

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