TA-WR1 - Sony Audio Service Manual (repair manual). Page 5

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5
5
TA-WR1
TA-WR1
• Waveforms
– RX Board –

Note on Schematic Diagrams:
• 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.
•         
f
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
Note: When mesurering voltages and waveforms, connect
          with STR-KSL900W (states: tuner).
no mark: TUNER
   
   ∗      
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO

Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•        
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
• Note for Printed Wiring Boards and Schematic Diagrams
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
C
B
These are omitted.
E
Q

Note: The components identified by mark 
0
 or dotted
line with mark 
0
 are critical for safety.
Replace only with part number specified.
1
IC7402 
rd
 (OSCO)
2
IC7405 
wd
 (X1) 
1 V/DIV, 50 ns/DIV
1 V/DIV, 50 ns/DIV
81 ns
2.9Vp-p
80.5 ns
3.3 Vp-p
MEMO
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