DOWNLOAD Sony SA-VA10 Service Manual ↓ Size: 309.75 KB | Pages: 19 in PDF or view online for FREE

Model
SA-VA10
Pages
19
Size
309.75 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / S/M SA-VA10 ''96 US CAN AEP E
File
sa-va10.pdf
Date
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Sony SA-VA10 Service Manual ▷ View online

— 5 —
SECTION  2
DISASSEMBLY
2
Four screws
(BVTP4x20)
3
Flat type wire
(27core)
6
Three screws
(BVTP4x20)
7
Three screws
(BVTP4x20)
8
Seven
screws
(BVTP3x10)
4
Connector
(CN903)
1
Grille flame
assembly
9
Back panel (L)
5
Two screws
(BVTT4x20)
0
Connector
(CN602)
2-1. AMPLIFIER ASSEMBLY
Note:
 Follow the disassembly procedure in the numerical order given.
!¡
Amplifier assembly
— 6 —
I/O
Function
• IC501 System Control (µPD78042FGF-016-3B9)
Pin No.
3-1. IC PIN FUNCTION
Pin Name
SECTION  3
DIAGRAMS
O
—
O
O
O
O
O
O
O
O
I
O
O
—
O
—
—
O
—
I
I
I
—
—
I
—
—
I
O
O
O
I
1 to 7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37 to 40
41
7G to 1G
VDD
POWER RY
FUNC 1/2
PLO/DELAY-CLK
PLO/DELAY-CE
PLO/DELAY-DATA
FRONT MUT
CENTER EXT MUT
S/W MUT
RESET
REAR MUT
CENTER MUT
AVSS
CENTER EXT/INT
—
MODE
VOL SCL
—
SW1
KEY 1
KEY 0
AVDD
AVREF
STOP
XT2
VSS
X1
X2
S/W BOOST
S/W C1 to S/W C4
CENTER EXT-SW
FL grid control
Power supply terminal (+5V)
Power relay control
Input select control  (L: input 2  H: input 1)
Prologic/Delay IC (IC103) serial control
Mute control (“L”=Mute)
System reset
Mute control (“L”=Mute)
Ground for A/D convertor
Center speaker switching control
Not used (Connected to ground)
Audio processor IC (IC203, 204) serial control
Not used (Connected to ground)
Audio signal detection  (L: Sound input  H: No sound input)
Key input (analog)
Analog power supply for A/D convertor
Reference voltage for A/D convertor (Connected to +5V)
Voltage detect (AC off)
Not used (Open)
Ground
Oscillation crystal (5 MHz) for main system clock
Sub woofer boost control  (H: off  L: on)
Super woofer level control
Connecting detection of external center output
(L: Connecting signal input  H: No connecting signal input)
• Abbreviation
FL : Fluorescent indicator tube
— 7 —
Cabinet (L)
POWER board
(including 
r
A – 
r
E)
T2 board
T1 board
DISPLAY board
P.S. board
MAIN board
(including 
r
F)
r
A
r
B
r
C
r
D
r
E
r
F
Cabinet (R)
R-SP board
I/O
Function
Pin Name
—
SIRCS
VOL SDA-2
VOL SDA-1
—
IC
STANDBY LED
OPRATE LED
READY LED
VDD
S24 to S27
VLOAD
S6 to S1
10G to 8G
Pin No.
42, 43
44
45
46
47
48
49
50
51
52
53 to 70
71
72 to 77
78 to 80
—
I
O
O
—
—
O
O
O
—
O
—
O
O
Not used (Connected to ground)
Remote control signal input
Audio processor IC (IC203, 204) serial control
Not used (Connected to ground)
Internal connecting (Connected to ground)
LED control  (L: Lighting)
Power supply (+5V)
FL segment control
Power supply (–25V) for indication control
FL segment control
FL grid control
3-2. CIRCUIT BOARDS LOCATION
NOTE
r
A : POW-R board
r
B : POW-L board
r
C : POW-SR board
r
D : POW-CN board
r
E : POW-SW board
r
F : INPUT board
— 19 —
SECTION  4
EXPLODED VIEWS
NOTE:
• -XX, -X mean standardized parts, so they may have
some difference from the original one.
• Items marked “*” are not stocked since they are
seldom required for routine service. Some delay
should be anticipated when ordering these items.
• The mechanical parts with no reference number in
the exploded views are not supplied.
• Hardware (# mark) list and accessories and pack-
ing materials are given in the last of this parts list.
• Abbreviation
CND : Canadian model
G
: Germang model
E1
: Central and South America model
E2
: Singapore, Malaysia model
AUS : Australian model
The components identified by mark 
!
or dotted line with mark 
! are critical
for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque 
! sont critiques pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro spécifié.
4-1. CABINET (L) ASSEMBLY
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
X-4947-365-1 FRAME ASSY, GRILLE
2
4-914-430-11 SCREW (4X20), TAPPING
3
X-4947-363-1 PANEL (L) ASSY, DISPLAY
4
4-982-969-01 BUTTON, POWER
* 5
1-661-288-11 SWITCH BOARD
* 6
A-4390-780-A DISPLAY BOARD, COMPLETE
* 7
4-982-971-01 HOLDER, FL TUBE
* 8
4-921-941-01 CUSHION (FL)
* 9
4-957-215-01 FRAME, TWEETER
10
4-949-145-01 SCREW (3.5X18), TAPPING
* 11
A-4384-226-A CABINET (L) ASSY, SPEAKER
* 12
4-982-965-01 PANEL (L), BACK (US,E1)
* 12
4-982-965-11 PANEL (L), BACK (CND)
* 12
4-982-965-21 PANEL (L), BACK (AEP,G,E2)
* 12
4-982-965-31 PANEL (L), BACK (UK)
* 12
4-982-965-41 PANEL (L), BACK (AUS)
* 13
4-976-741-01 COVER, BUTTON
FL501
1-517-546-11 INDICATOR TUBE, FLUORESCENT
SP901
1-504-874-11 SPEAKER (5CM)(Center tweeter)
SP903
1-504-875-11 SPEAKER (10CM)(Full range)
1
2
2
2
2
2
2
3
4
5
6
7
8
9
10
11
12
13
SP903
SP901
10
#1
#1
#2
#2
#3
#4
#4
#4
10
#4
Amplifier assembly
FL501
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