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Sony STR-K670P Service Manual page 11

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Q Q
3 7 6 3 1 5 1 5 0
• Circuit Boards Location
AC SELECT board
(E51 model only)
POWER board
TUNING board
T E
L
1 3 9 4 2 2 9 6 5 1 3
HEADPHONE board
DISPLAY board
w w w
STR-K670P
SECTION 3
DIAGRAMS
STANDBY board
MAIN board
DIGITAL board
x
a o
y
.
i
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8
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 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
specified.
•
%
: indicates tolerance.
•
f
: internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note:
The components identi-
fied by mark 0 or dot-
ted line with mark 0 are
critical for safety.
Replace only with part
number specified.
• A : B+ Line.
• B : B+ Line.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
Q
Q
J
: ANALOG
3
7
6
3
c
: DIGITAL
• Abbreviation
AR
: Argentina model
AUS
: Australian model
CND
: Canadian model
E51
: Chilean and Peruvian models
MX
: Mexican model
RU
: Russian model
SP
: Singapore model
SP6
: Singapore and Malaysia models
u 1 6 3
.
11
11
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2
4
9
9
8
For Printed Wiring Boards.
Note:
• X : parts extracted from the component side.
•
a
: Through hole.
•
f
: internal component.
1
/
W or less unless otherwise
•
: Pattern from the side which enables seeing.
4
• Indication of transistor.
C
Q
B
E
Note:
Les composants identifiés
par une marque 0 sont cri-
tiques pour la sécurité.
Ne les remplacer que par une
B
C E
piéce por tant le numéro
spécifié.
Caution:
Pattern face side:
(Side A)
Parts face side:
(Side B)
• Waveforms
– DIGITAL Board –
1
5
1
5
0
8
9
2
4
1
IC1501 9 (MCLK1)
72 ns
1 V/DIV, 40 ns/DIV
2
IC1101 id (X1)
41.6 µs
1 V/DIV, 20 ns/DIV
3
IC1301 ws (XIN)
m
c o
81 ns
1 V/DIV, 40 ns/DIV
STR-K670P
Ver. 1.3
2
9
9
These are omitted.
These are omitted.
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
9
8
2
9
9
3.4 Vp-p
4.2 Vp-p
4.4 Vp-p

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