Read Sony HT-CT550W / SA-WCT550W Service Manual online
SA-WCT550W
SA-WCT550W
9
9
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• f : Internal component.
•
2 : Nonfl ammable resistor.
•
5 : Fusible resistor.
•
C : Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
•
A : B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : POWER ON
• Voltages are taken with VOM (Input impedance 10 M
• Voltages are taken with 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
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
AUDIO
• Abbreviation
CND : Canadian model
TW :
CND : Canadian model
TW :
Taiwan
model
For Printed Wiring Boards.
Note:
•
•
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.)
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note:
The components identi-
fi ed by mark
The components identi-
fi ed by mark
0 or dotted
line with mark
0 are criti-
cal for safety.
Replace only with part
number specifi ed.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque
Les composants identifi és
par une marque
0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Abbreviation
CND : Canadian model
TW :
CND : Canadian model
TW :
Taiwan
model
Note: When the SUB MAIN board or IC104 on the SUB
MAIN board are replaced, spread the compound refer-
ring to “NOTE OF REPLACING THE IC104 ON THE
SUB MAIN BOARD AND THE COMPLETE SUB
MAIN BOARD” on servicing notes (page 3).
ring to “NOTE OF REPLACING THE IC104 ON THE
SUB MAIN BOARD AND THE COMPLETE SUB
MAIN BOARD” on servicing notes (page 3).
Note: When the SUB MAIN board or IC104 on the SUB
MAIN board are replaced, spread the compound refer-
ring to “NOTE OF REPLACING THE IC104 ON THE
SUB MAIN BOARD AND THE COMPLETE SUB
MAIN BOARD” on servicing notes (page 3).
ring to “NOTE OF REPLACING THE IC104 ON THE
SUB MAIN BOARD AND THE COMPLETE SUB
MAIN BOARD” on servicing notes (page 3).
• Indication of transistor.
C
B
These are omitted.
E
Q
C E
B
These are omitted.
• Waveforms
– SUB MAIN Board –
1
IC100
7 (Xout)
1 V/DIV, 50 ns/DIV
50 ns
1.8 Vp-p
3
IC105
eh (XFSIIN)
1 V/DIV, 50 ns/DIV
82 ns
3.3 Vp-p
2
IC105
qf (XFSOOUT)
500 mV/DIV, 20 ns/DIV
20.4 ns
1 Vp-p
4
IC105
rk (XFSOIN)
500 mV/DIV, 10 ns/DIV
20.6 ns
0.8 Vp-p
5
IC107
2 (A)
100 mV/DIV, 10 ns/DIV
20.6 ns
0.2 Vp-p
Ver. 1.1
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