STR-DE485, STR-DE485E - Sony Audio Service Manual (repair manual). Page 20

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STR-DE485/DE485E
20
20
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)

for 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.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• Voltage 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 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.
• Signal path.
F
: TUNER (FM/AM)
g : VIDEO
J
: CD (ANALOG)
c
: CD (DIGITAL)
• Abbreviation
CND : Canadian model.
AR
: Argentine model.
AUS
: Australian model.
CH
: Chinese model.
MX
: Mexican model.
SP
: Singapore model.
TW
: Taiwan model.

for printed wiring boards:
• X : parts extracted from the component side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
C
Q
Q
E
B
C
E

Note:
The components identified by
mark 0 or dotted line with mark
0 are critical 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
pièce portant le numéro spécifié.
• Waveform (DIGITAL Board)
3.4Vp-p
1
IC1101  
qd
  (CKOUT)
1V/DIV   50nsec/DIV
12.288MHz
3.4Vp-p
2
IC1101  
qf
  (BCK)
1V/DIV   0.2µsec/DIV
3.07MHz
3.6Vp-p
3
IC1101  
wa
  (XOUT)
1V/DIV   50nsec/DIV
12.288MHz
5Vp-p
4
IC1501  
el
  (MCLKI)
1V/DIV   50nsec/DIV
12.288MHz
3.6Vp-p
5
IC1201  
qs
  (MCLK2)
1V/DIV   50nsec/DIV
13.5MHz
4Vp-p
6
IC1201  
qf
  (SCKOUT)
1V/DIV   50nsec/DIV
12.288MHz
3Vp-p
7
IC1601  
id
  (X1)
1V/DIV   50nsec/DIV
20MHz
Display
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