Sony TA-SA300WR Service Manual page 11

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• : Internal component.
f
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen
(Conductor Side) from the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• Indication of transistor.
C
Q These are omitted.
B E
B C E
These are omitted.
• Abbreviation
AUS : Australian model
CND : Canadian model
IT : Italian model
TA-SA300WR
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 1/4 W or less unless otherwise
specifi ed.
• : internal component.
f
• 2 : Nonfl ammable resistor.
• 5 : Fusible resistor.
• C : panel designation.
Note: The components identifi ed by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specifi ed.
Note: Les composants identifi és par une marque
0 sont critiques pour la sécurité.
Ne les remplacer que par une piéce portant
le numéro spécifi é.
• A : B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : POWER ON
• Voltages are taken with VOM (Input impedance 10 MΩ).
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
• Abbreviation
AUS : Australian model
CND : Canadian model
IT : Italian model
• Waveforms
– WLK4 MAIN Board –
1 IC100 7 (Xout)
1.6 Vp-p
50 ns
1 V/DIV, 20 ns/DIV
IC105 qf (XFSOOUT)
2
3.3 Vp-p
21 ns
2 V/DIV, 10 ns/DIV
IC105 eh (XFSIIN)
3
3.6 Vp-p
81.5 ns
2 V/DIV, 50 ns/DIV
IC105 rk (XFSOIN)
4
3.7 Vp-p
21 ns
2 V/DIV, 10 ns/DIV
IC107 2 (A)
5
3 Vp-p
20 ns
2 V/DIV, 10 ns/DIV
11 11
TA-SA300WR
Ver. 1.1