Read Sony STR-K740P / STR-K840P Service Manual online
2
STR-K740P/K840P
TABLE OF CONTENTS
1. Printed Wiring Boards –Main Section– ................................... 3
2. Schematic Diagram –Main Section (1/2)– .............................. 4
3. Schematic Diagram –Main Section (2/2)– .............................. 5
4. Printed Wiring Board –STK Section– ..................................... 6
5. Schematic Diagram –STK Section– ........................................ 7
6. Printed Wiring Board –Video Section– ................................... 8
7. Schematic Diagram –Video Section– ...................................... 9
8. Electrical Parts List ................................................................ 10
2. Schematic Diagram –Main Section (1/2)– .............................. 4
3. Schematic Diagram –Main Section (2/2)– .............................. 5
4. Printed Wiring Board –STK Section– ..................................... 6
5. Schematic Diagram –STK Section– ........................................ 7
6. Printed Wiring Board –Video Section– ................................... 8
7. Schematic Diagram –Video Section– ...................................... 9
8. Electrical Parts List ................................................................ 10
For schematic diagrams.
Note:
Note:
• All capacitors are in
µ
F unless otherwise noted. p : pF. 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.
•
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages 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 production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD (ANALOG)
c
: DVD (DIGITAL)
• Abbreviation
CND : Canadian model
MY
MY
: Malaysia model
SP
: Singapore model
AR
: Argentine model
MX
: Mexican model
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each block.)
(In addition to this necessary note is printed in each block.)
Note:
The components identified by
mark
The components identified by
mark
0
or dotted line with mark
0
are critical for safety.
Replace only with part number
specified.
specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
Ne les remplacer que par une
pièce portant le numéro spécifié.
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Side A)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side B)
the parts face are indicated.
For printed wiring boards.
Note:
Note:
• X
: parts extracted from the component side.
•
a
: Through hole.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
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