STR-DE225, STR-DE325 - Sony Audio Service Manual (repair manual). Page 6

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— 6 —
For schematic diagrams.
Note:
• 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.
•
%
: indicates tolerance.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
• Abbreviation
CND : Canadian
EE
: East European
AUS
: Australian
CH
: Chinese
G
: German
MY
: Malaysia
SP
: Singapore
EA
: Saudi Arabia
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
®
: Through hole.
•
¢
: internal component.
•
b
: Pattern from the side which enables seeing.

Note:
The components identified by
mark 
!
 or dotted line with mark
!
 are critical 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
pièce portant le numéro spécifié.
1
 
IC300   32PIN (OSC)
2
 
IC201   34PIN (X1) 
8MHz
4.19MHz 
5.2Vp-p
4.4Vp-p
• Waveform

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