Read Sony SA-WCT770 Service Manual online
SA-WCT770
SA-WCT770
17
17
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.
• 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 in
• Voltages and waveforms are dc with respect to ground in
wireless connection to the bar speaker (SA-CT770).
no mark : POWER ON
• Voltages are taken with VOM (Input impedance 10 M
• Voltages are taken with VOM (Input impedance 10 M
).
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 :
F :
AUDIO
(ANALOG)
J :
AUDIO
(DIGITAL)
• 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.
•
• 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.)
• Abbreviation
CND : Canadian model
TW :
CND : Canadian model
TW :
Taiwan
model
• Indication of transistor.
C
B
These are omitted.
E
Q
C E
B
These are omitted.
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.
• Waveforms
– SUB MAIN Board –
Note: When the complete SUB MAIN board is replaced, re-
fer to “NOTE OF REPLACING THE IC104 ON THE
SUB MAIN BOARD AND THE COMPLETE SUB
MAIN BOARD” on page 4.
SUB MAIN BOARD AND THE COMPLETE SUB
MAIN BOARD” on page 4.
Note: When the complete SUB MAIN board is replaced, re-
fer to “NOTE OF REPLACING THE IC104 ON THE
SUB MAIN BOARD AND THE COMPLETE SUB
MAIN BOARD” on page 4.
SUB MAIN BOARD AND THE COMPLETE SUB
MAIN BOARD” on page 4.
1
IC100
7 (Xout)
1 V/DIV, 20 ns/DIV
50 ns
2 Vp-p
2
IC105
qf (XFSOOUT)
2 V/DIV, 20 ns/DIV
21 ns
4.5 Vp-p
20.8
Ps
3.3 Vp-p
3
IC105
wl (LRCK)
1 V/DIV, 10
Ps/DIV
4
IC105
e; (BCK)
1 V/DIV, 200 ns/DIV
326 ns
3.3 Vp-p
5
IC107
4
1 V/DIV, 20 ns/DIV
20.6 ns
3.2 Vp-p
6
IC103
9 (2Q)
2 V/DIV, 50 ns/DIV
81 ns
4.1 Vp-p
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.
le numéro spécifi é.
Ver. 1.1
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