Sony SAVA-57 Service Manual ▷ View online
— 33 —
6-12. IC BLOCK DIAGRAMS
IC104 LA1235
3
6
11
2
5
8
1
4
14
15
12
9
10
16
13
7
FM IF AMP
LIMITER
AF/NULL
METER
QUADRATURE
DET
AF AMP
IF OFF
NULL METER
SHORTING
LEVEL
DET
METER
DRIVE
MUTING
CIRCUIT
CIRCUIT
DETUNE
DET
GND
B+
IC201, 251 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
43
44
LSELO
L4
L3
L3
L2
L1
VDD
R1
R2
R3
R4
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
IC105 TK10691MTL
IC203 TK10690MTL
IC203 TK10690MTL
G SELL
VREF
RECT
6
7
8
5
3
2
1
4
NF IN
INPUT
REF CAP
GND
VCC
OUTPUT
CONT IN
RECT CAP
— 34 —
IC202 M5218AL
IC301 LA2786
1
2
3
4
5
6
7
8
9
15
10
11
12
–
+
13
14
16
21
18
19
25
17
24
22
23
20
34
32
33
29
30
35
28
31
27
26
36
40
39
38
37
41
42
NOISE
FILTER
NOISE
CH
BALANCE
CONTROL
VR
CONTROL
LPF
V REF
VR
VR
NOISE
GENERATOR
VCA
VCA
VCA
VCA
VCA
VCA
VCA
VCA
LPF
LPF
RECT
RECT
RECT
RECT
P. S.
P. S.
CMODE
MUTE
DIVIDER
OSC
CONTROL
CTRIM
LOG
DIFF
DIFF
LOG
DIFF
DIFF
DUAL T
CONTROL
L-IN
R-IN
V
SS
CLK
DATA
V
CC
L-OUT
R-OUT
S-OUT
C-OUT
ENABLE
OSC1
CMODE-CAP.
C-TRIM DC CUT
R-BPF1
R-BPF2
R-BPF3
DC CUT
DC CUT
L-R RECT
L+R RECT
VCS-TH
VCS-1
VCS-2
BPF1
BPF2
VREF
S-CH DC OUT
C-CH DC OUT
L-CH DC OUT
R-CH DC OUT
VREF
L-BPF1
L-BPF2
L-BPF3
DC CUT
DC CUT
R RECT
L RECT
VLR-TH
VLR-1
VLR-2
3
2
1
4
7
6
5
8
V–
V+
OUT1
–IN1
+IN1
+IN2
–IN2
OUT2
— 35 —
IC302, 701 µPC1237HA
1
2
3
4
5
6
7
8
OVER LOAD DET
F/F
OFFSET DET
LATCH/
AUTORESET
V
CC
ON
MUTE
AC OFF
DET
V
CC
IC351 LV1016
IC301 LM4700TF
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
3
2
1
4
7
6
5
8
10
9
11
STANDBY
IN+
IN–
MUTE
GND
NC
NC
VEE
OUTPUT
NC
VCC
— 36 —
7G-1G
VDD
POWER RY
PLO/DELAY-CE
PLO/DELAY-DATA
PLO/DELAY-CLK
FRONT MUT
CENTER MUT
HCD IN
S/W MUT
RESET
—
—
AVSS
VOL CE
VOL DI1
VOL CL1
VOL DI2
VOL CL2
AUTO SW
KEY 1
KEY 0
AVDD
AVREF
STOP
XT2
VSS
X1
X2
REAR MUT
REAR POWER
S/W BOOST
—
CENTER EXT-SW
TV/SW
—
—
INT SIRCS
—
—
—
IC
STANDBY LED
READY LED
OPRATE LED
VDD
S24-S7
VLOAD
S6-S1
10G-8G
FL gride signal output
Power supply (+4.7V)
Power relay output
Dolby IC enable output
Dolby IC data output
Dolby IC clock output
Front speaker mute output
Senter speaker mute output
HCD connector input
Super woofer mute output
Reset signal input
Connected to ground
Connected to ground
Ground
Volume IC enable output
Volume IC data output 2
Volume IC clock output 2
Volume IC data output 1
Volume IC clock output 1
Line input level
AD input for key
AD input for key
Power supply (+4.7V)
Analog reference voltage input
STOP input
Not used
Ground
X’tal (5MHz)
X’tal (5MHz)
Rear speaker mute
Connected to ground
Super woofer boost
Power supply (+4.7V)
External center speaker switch input
TV SIRCS enable switch input
Connected to ground
Connected to ground
SIRCS input
Connected to ground
Connected to ground
Connected to ground
Connected to ground
LED output
LED output
LED output
Power supply (+4.7V)
FL segment signal output
Power supply (–25V) for FL segment signal output
FL segment signal output
FL gride signal output
1-7
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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53-70
71
72-77
78-80
O
–
O
O
O
O
O
O
I
O
I
–
–
–
O
O
O
O
O
I
I
I
–
I
I
–
–
I
O
O
O
O
–
I
I
–
–
I
–
–
–
–
O
O
O
–
O
–
O
O
Function
Function
Pin No.
Pin Name
I/O
6-13. IC PIN FUNCTIONS
• IC501 SYSTEM CONTROL (uPD78043FGF-012-3B9)
• Abbreviation
FL : Fluorescent indicator tube
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