Sony SA-WCT770 - Page 17

SA-WCT770
SA-WCT770
1717
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.
•
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.)
• A : B+ Line.
• 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).
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 (ANALOG)
J : AUDIO (DIGITAL)
• Abbreviation
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.)
• Abbreviation
CND : Canadian model
TW : Taiwan model
• Indication of transistor.
C
B
These are omitted.
E
Q
CEB
These are omitted.
Caution:
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.
• 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.
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.
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.
Ver. 1.1