Read Sony SEN-T581 / TA-AV581 Service Manual online
SECTION 3
DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
TRANS 1 board
OUTLET board (AEP, SP, AUS Model)
TRANS 2 board
SW board
HP board
DISPLAY board
VOL board
MAIN board
POWER board
REAR SP board
4
For Schematic Diagrams.
Note:
Note:
• All capacitors are in µF unless otherwise noted. pF:
µµF 50 WV or less are not indicated except for
electrolytics and tantalums.
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
No mark : FM
• Voltages are taken with a VOM (Input impedance
10M
Ω
).
Voltage variations may be noted due to normal
production tolerances.
production tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
• Abbreviation
AUS
: Australian model.
SP
: Singapore model.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
For Printed Wiring Boards.
Note:
Note:
• X
: parts extracted from the component side.
•
®
: Through hole.
•
¢
: internal component.
• b
: Pattern from the side which enables seeing.
• Waveform
• DISPLAY SECTION
1
IC401
#∞
(X2)
5.8Vp-p
5MHz
• MAIN SECTION
2
IC300
$§
(OSC)
4.0Vp-p
8.0MHz
Note :
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
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