Sony SA-WCT291 Manuel d'entretien - Page 27
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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.
• MAIN board is multi-layer printed board. However, the
patterns of intermediate layers have not been included in
diagrams.
• Indication of transistor.
C
Q
These are omitted.
B
E
• Abbreviation
AUS
: Australian model
CND : Canadian model
E3
: 240 V AC area in E model
E12
: 220-240 V AC area in E model
EA
: Saudi Arabia model
LA9
: Latin-American model
RU
: Russian Model
SP
: Singapore model
TH
: Thai model
Note: When the complete MAIN board is replaced, refer to
"NOTE OF REPLACING THE IC1001 ON THE MAIN
BOARD AND THE COMPLETE MAIN BOARD" and
"NOTES ON THE WIRELESS CONNECTION (LINK)
AFTER REPAIRS ARE COMPLETE" on page 5.
HT-CT290/CT291
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 V 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 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)
: AUDIO (DIGITAL)
J
E
: VIDEO
• Abbreviation
AUS
: Australian model
CND : Canadian model
E3
: 240 V AC area in E model
E12
: 220-240 V AC area in E model
EA
: Saudi Arabia model
LA9
: Latin-American model
RU
: Russian Model
SP
: Singapore model
TH
: Thai model
• Circuit Boards Location
SWITCHING REGULATOR 3L411L (US, CND)
SWITCHING REGULATOR 3L411W (EXCEPT US, CND, E12)
SWITCHING REGULATOR 3L411W-1 (E12)
27
27
TOUCH board
MAIN board
USB board
BLUETOOTH module
DISP CHUKEI board
• Abbreviation
CND : Canadian model
E12
: 220-240 V AC area in E model
HT-CT290/CT291