Sony SAVA-29 Service Manual ▷ View online
SAVA-29
— 6 —
— 5 —
SECTION 2
DISASSEMBLY
SECTION 3
DIAGRAM
3-1. CIRCUIT BOARDS LOCATION
• Waveforms
For schematic diagrams.
Note:
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Circled numbers refer to waveforms.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Note:
The components identified
by mark
The components identified
by mark
!
or dotted line with
mark
!
are critical for safety.
Replace only with part
number specified.
number specified.
Note:
Les composants identifiés par une
marque
Les composants identifiés par une
marque
!
sont critiques pour la
sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
Ne les remplacer que par une
piéce portant le numéro spécifié.
• Signal path.
F
: AUDIO
• Abbreviation
CND : Canadian
SP
SP
: Singapore
MY
: Malaysia
For printed wiring boards.
Note:
Note:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
2
IC501
#∞
(X2)
5.0 MHz
5.6Vp-p
4
Front panel assy
7
Display panel assy
6
Flat type wire
5
Four screws
(4
×
20)
1
Grill frame assy
2
Ornament frame
3
Three screws
(4
×
20)
!•
!¶
Screw
(M4
×
16)
9
Two screws
(M4
×
16)
8
Three screws
(4
×
25)
!ª
Amplifier
!∞
Connector
!§
Back panel
!º
Seven screws
(+BVTP 3
×
8)
!¡
Two screws
(+BVTP 3
×
8)
!£
Five screws
(+BVTP 3
×
8)
!¢
Two screws
(M4
×
16)
!™
POWER
board
PS
board
MAIN
board
KEY
board
DOLBY
board
DISPLAY
board
REG
board
INPUT
board
POW-SR
board
T2
board
T1
board
POW-CSW
board
POW-LR
board
2-1. REMOVAL AMPLIFIER BLOCK (FRONT SPEAKER: L-CH)
SAVA-29
— 8 —
— 7 —
3-2. SCHEMATIC DIAGRAM — DOLBY SECTION —
• See page 30 for IC Block Diagrams.
SAVA-29
— 10 —
— 9 —
3-3. PRINTED WIRING BOARDS — DOLBY SECTION —
• See page 6 circuit boards location.
1
2
A
B
C
D
E
F
G
H
I
J
3
4
5
6
7
8
9
10
11
12
G
H
1-670-184-
11
(11)
DOLBY BOARD
CENTER
REAR
WOOFER
R
L
R
L
1
7
1
6
1
24
25
48
16
FRONT
5.1/DVD IN
J401
(Page 24)
(Page 24)
SAVA-29
— 12 —
— 11 —
3-4. SCHEMATIC DIAGRAM — DISPLAY SECTION —
• See page 6 for Waveforms. • See page 29 for IC Pin Functions.
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