Read Sony STR-DE497 Service Manual online
STR-DE497
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.)
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. (p: pF)
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
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
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.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM/AM)
L
: VIDEO (AUDIO)
I
: VIDEO
J
: CD (ANALOG)
c
: CD (DIGITAL)
• Abbreviation
SP
: Singapore model.
MY
: Malaysia model.
E2
: AC 120 V area in E model.
AUS
: Australian model.
KR
: Korea 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 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)
(Side A)
parts face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
C
Q
Q
E
B
C
E
• Abbreviation
SP
: Singapore model.
MY
: Malaysia model.
E2
: AC 120 V area in E model.
AUS
: Australian model.
KR
: Korea model.
TW
: Taiwan model.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Ver. 1.1
• Waveforms (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
3.2Vp-p
3
IC1101
wa
(XOUT)
1V/DIV 50nsec/DIV
12.288MHz
4.4Vp-p
4
IC1501
el
(MCLKI)
1V/DIV 50nsec/DIV
12.288MHz
3.4Vp-p
5
IC1201
qs
(MCLK2)
1V/DIV 50nsec/DIV
13.59MHz
3.4Vp-p
6
IC1201
qf
(SCKOUT)
1V/DIV 50nsec/DIV
12.288MHz
2.5Vp-p
7
IC1601
id
(X1)
1V/DIV 50nsec/DIV
16MHz
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