DOWNLOAD Sony SAVA-7 Service Manual ↓ Size: 528.68 KB | Pages: 19 in PDF or view online for FREE

Model
SAVA-7
Pages
19
Size
528.68 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
sava-7.pdf
Date
PREV: Sony TA-F248E (serv.man2) Service Manual

Sony SAVA-7 Service Manual ▷ View online

— 5 —
3.
STAND ASSY, BOTTOM GRILLE, BOTTOM SPEAKER
4
 Tapping
3.5 
×
 12
3
 Bottom
grille
2
 Tapping
3.5 
×
 12
1
 Stand assy
(Open in the
direction of
the arrow.)
5
 Tapping
3.5 
×
 12
6
 Speaker
(10 cm)
— 6 —
SECTION 3
DIAGRAMS
3-1.
CIRCUIT BOARDS LOCATION
DOLBY board
VOLUME board
POWER
board
DISPLAY board
SWITCH
board
PS board
T1 board
T2 board
CONNECTOR
board
— 17 —
3-6.
IC PIN FUNCTION
•
 IC151 (SYSTEM CONTROL) CXP82612-027Q
Pin No.
1
2
3
4
5
6
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
38 to 70
71
72
73
74
75
76
77
78
79
80
I/O
I
I
—
—
—
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
O
O
O
O
O
—
I
I
—
—
O
O
O
O
—
—
—
I
I
—
—
—
—
I
I
Description
STOP detection.
SIRCS.
Not used.
Not used.
Not used.
Chip enable for surround IC (LA2786, LV1016) control.
Chip enable for LR side volume IC (LC75373) control.
Clock.
Chip enable for CS side volume IC (LC75373) control.
Data out.
Register select signal.
Read/Write select signal.
Read/Write startup signal.
Display data bus.
Display data bus.
Display data bus.
Display data bus.
Display data bus.
Display data bus.
Display data bus.
Display data bus.
Key input.
Key input.
LR mute.
Center mute.
Surround mute.
Sub-woofer mute.
Amplifier standby.
Not used.
Reset signal.
Oscillator.
Oscillator.
Ground.
LED (yellow/green) illumination.
LED (red) illumination.
Back-light (bright).
Back-light (dim)
Not used.
Not used.
5V.
Not used.
Not used.
5V.
Not used.
Not used.
Not used.
External center speaker detection.
External surround speaker detection.
Pin Name
STOP
SIRCS
N/C
N/C
N/C
CE1
CE2
CLK
CE3
DATA
RS
R/W
E
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
KEY0
KEY1
MUTE LR
MUTE CEN
MUTE SUR
MUTE SW
STANDBY
N/C
RESET
EXTAL
XTAL
Vss
LED (OPERATE)
LED (STANDBY)
B/L HIGH
B/L LOW
N/C
GND
Vdd
GND
GND
5V
N/C
N/C
N/C
CNT EXT
SUR EXT
— 18 —
3-7.
IC BLOCK DIAGRAMS
IC201
LC75373ED
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
DECODER
LATCH
SHIFT
REGISTER
CONTROL
–
+
+ 
–
1
2
3 4
5
6 7 8
9 10
20
19
18
17
16
15
14
13
12
11
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
LSELO
L4
L3
L2
L1
VDD
R1
R2
R3
R4
RSELO
RVRIN
RCOM
RT1
RT2
RT3
RTOUT
RSIN
RS1
RS2
RS3
RSOUT
RFIN
RFOUT
RROUT
VSS
CL
DI
CE
VREF
LROUT
LFOUT
LFIN
LSOUT
LS3
LS2
LS1
LSIN
LTOUT
LT3
LT2
LT1
LCOM
LVRIN
IC351
LV1016
1
5
6
+
–
+
20
19
18
17
16
15
14
13
21
22
23
24
2
3
4
7
8
9
10
12
11
+
DEC
IN-FILTER
(40kHz)
VDD
ADM-CONT
SRAM
ADM
OUT-FILTER
(7k/5k)
B-NR
DC-OUT
VOL/MUTE
S-TRIM
INV-PHASE
R+DELAY
L+DELAY
A
B
A
B
A
B
A
B
A
B
A
B
A
B
L–R
L+R
(–6dB)
A
B
A.GND
L-OUT
R-OUT
VREF
S-OUT
DELAY-OUT
S-IN
R-IN
L-IN
VCC
NR-DET
ENABLE
DATA
CLK
D.GND
DC-CUT
VDD
OSC
OSC
NR-IREF
DC-CUT
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