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Diagrams; Circuit Boards Location; Waveforms - Sony TA-AV571 Service Manual

Integrated av amplifier
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SECTION 3

DIAGRAMS

3-1. CIRCUIT BOARDS LOCATION

T-1 board
T-2 board
H.P board
DISPLAY board
POWER board
REAR SP board
MAIN board
VR board
— 5 —
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each
block.)
NOTE
: parts extracted from the component side.
: Pattern from the side which enable seeing.
NOTE
• All capacitors are in µF unless otherwise noted. pF : µµF
50WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in Ω and 1/4W or less unless otherwise speci-
fied.
¢ : internal component.
: nonflammable resistor.
: panel designation.
Note:
The components identi-fied by mark ! or dotted line with mark
! are critical for safety.
Replace only with part number specified.
B+
: B+ Line
B–
: B– Line
• Voltage and waveforms are dc with respect to ground under no-
signal conditions.
no mark : STOP
• Voltages are taken with a VOM (Input impedance 10MΩ).
Voltage variations may be noted due to normal production toler-
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
• Circled numbers refer to waveforms.
• Signal path.
: FM

3-2. WAVEFORMS

MAIN SECTION
1
5.2Vp-p
8MHz
IC202 @¢
PANEL SECTION
2
4.2Vp-p
5MHz
IC401 #¢ X1
— 6 —
— 5 —

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