Sony SAVA-29 Service Manual ▷ View online
— 29 —
3-13. IC PIN FUNCTIONS
• IC501 SYSTEM CONTROL (uPD78043FGF-046-3B9) (DISPLAY BOARD)
Pin No.
1 to7
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 to 70
71
72 to 77
78 to 80
I/O
O
O
O
O
O
O
O
O
O
I
O
O
O
O
I
I
I
I
I
O
O
I
I
I
I
O
O
O
O
O
O
Description
FL grid output signal
Power supply (+5 V)
Power relay control output
Surround IC (LA2787, LV1017) control, chip enable output
CSW channels volume IC (LC75373) control, chip enable output
LR channels volume IC (LC75373) control, chip enable output
Rear volume IC (TC9210) control, latch output
Clock output
Data output
FL power supply switch
Reset input
Not used (Connected to ground)
Not used (Connected to ground)
A/D converter ground (Connected to ground)
LR mute
Center mute
Rear mute
Sub woofer mute
POWER key detection
Key input 1
Key input 0
Auto power signal detection input
A/D converter analog power supply (+5 V)
A/D converter reference voltage
Stop detection
Not used (Not connected)
Ground (Connected to ground)
External crystal oscillator is connected to this terminal
External crystal oscillator is connected to this terminal
Not used (Not connected)
Wireless rear power transmission control output
Sub woofer volume adjustment control output
SAVA-29/59 discrimination input
External/internal center speaker selection control input
Control S (TV) select control input
Not used (Connected to ground)
Not used (Connected to ground)
SIRCS data input
Not used (Connected to ground)
Not used (Connected to ground)
Not used (Connected to ground)
Not used (Connected to ground)
STANDBY LED ON/OFF control output
READY LED ON/OFF control output
OPERATE LED ON/OFF control output
Power supply (+5 V)
FL segment output signal
FL pull down voltage (–35 V)
FL segment output signal
FL grid output signal
Pin Name
7G to 1G
VDD
POWER RY
SUR CE
VOL CSW CE
VOL LR CE
VOL3 LAT
S CLOCK
S DATA
FL SW
RESET
AVSS
LR MUTE
C MUTE
S MUTE
SW MUTE
POWER SW
KEY 1
KEY 0
AUTO SW
AVDD
AVREF
STOP
XT2
VSS
X1
X2
REAR POWER
S/W BOOST
U SET SW
C EXT SW
TV/SW
SIRCS
IC
STANDBY LED
READY LED
OPERATE LED
VDD
S24 to S7
VLOAD
S6 to S1
10G to 8G
• Abbreviation
FL : Fluorescent indicator signal
FL : Fluorescent indicator signal
— 30 —
3-14. IC BLOCK DIAGRAMS
IC400
CXA8081S (DOLBY BOARD)
IC401
CXA8079S (DOLBY BOARD)
R
B
R B
DC-RS
AGND
DC-OT
NR-R
NR-C
RS-OUT
LS-OUT
R-OUT
L-OUT
R
B
VSS
CLK
D
ATA
ENABLE
DC-LS
DC-IN
VCC
L-IN
R-IN
S-IN
VREF
FCL-IN
FCR-IN
FCLS-IN
FCRS-IN
OSC
VDD
PDM
PDM-COUT
SRA1-8K
20KH-L.P.F.
DEC
5K/7K-L.P.F.
B-NR
R-STEREO
VOL/MUTE
RS-TRIM
LS-TRIM
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
INV-PHASE
R+DELAY
L+DELAY
-6dB
L+R
L-R
P
B
B
P
B
B
20K
20K
20K
20K
48
VCS2
VCS1
VCS-TH
L+R-RCT
L-R-RCT
DCUT
DCUT
R-BPF3
R-BPF2
R-BPF1
CT
-OUT2
CT
-IN2
MIXOUT
C-OUT
S-OUT
R-OUT
L-OUT
VCC
CM-CAP
FCC-IN2
ENABLE
D
ATA
CLK
OSC1
NS-BPF1
NS-BPF2
VREF
S-DCUT
C-DCUT
L-DCUT
R-DCUT
VREF-BUF
L-IN
R-IN
GND
CT
-OUT1
CT
-IN1
FCC-IN1
L-BRF1
L-BRF2
L-BRF3
DCUT
DCUT
R-RCT
VCR-TH
VCR1
VCR2
47 46 45
44 43
42
41
40
39
38
37
36
35
34
33
32
31
30 29 28
L+R-RECT
27
26
25
P.S
VCS-LOG
OSC
DEC
N-GEN
N-BPF
N-OH
DIV
BAL-DET
BALCONT
VREF
VR
VR
VCRX8
COMB-NET
CMODE
SMUTE
C-TRIM
P
B
P
B
P
B
P
B
R
B
R
B
R-B.P.F.
L-B.P.F.
L-R-RECT
R-RECT
L-RECT
VLR-LOG
DUAL-TIME
P.S
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
— 31 —
IC201, 251
LC75373ED (MAIN BOARD)
+
–
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
–
+
–
–
+
–
+
–
+
–
+
–
–
+
–
–
+
–
–
+
–
+
–
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
2
3
4
5
1
16
15
14
13
12
6
11
7
10
8
9
VSS
OUT
VDD
IN
A-GND
NC
CS2
STB
DATA
CK
GND
CS1
NC
A-GND
IN
OUT
R-CH
L-CH
L-CH
DATA
LATCH
CIRCUIT
R-CH
DATA
LATCH
CIRCUIT
LEVEL
SHIFT
CIRCUIT
LEVEL
SHIFT
CIRCUIT
SHIFT RESISTER
(13bit)
STROBE OSC
CIRCUIT
IC304
TC9210P (MAIN BOARD)
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
IC701
µ
PC1237HA (PS BOARD)
NOTE:
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences 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.
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.
in the exploded views are not supplied.
•
Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
packing materials are given in the last of this
parts list.
SECTION 4
EXPLODED VIEWS
— 32 —
When indicating parts by reference number,
please include the board name.
please include the board name.
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 pièce portant
le numéro spécifié.
le numéro spécifié.
4-1. SYSTEM (L) ASSY
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
1
4-991-883-01 FRAME, ORNAMENT
2
X-4948-622-1 FRAME (L) ASSY, GRILLE
3
4-951-733-01 CATCHER
4
1-505-681-11 SPEAKER (5cm)
5
X-4948-623-1 PANEL ASSY, FRONT
6
1-505-680-11 SPEAKER (10cm)
7
4-914-430-11 SCREW (4
×
20), TAPPING
8
4-991-271-01 BUTTON (A)
* 9
4-991-276-01 HOLDER, FL TUBE
* 10
A-4414-392-A DISPLAY BOARD, COMPLETE
11
4-991-284-01 REFLECTOR
12
X-4950-407-1 PANEL ASSY, DISPLAY
13
4-991-275-01 WINDOW (IR)
* 14
1-670-186-11 KEY BOARD
15
1-773-241-11 WIRE (FLAT TYPE) (25 CORE)
16
4-991-272-01 BUTTON (B)
* 17
A-4411-125-A CABINET (L) ASSY, SPEAKER
18
4-973-511-21 COVER (W)
19
1-505-679-11 SPEAKER (13cm)
20
4-929-125-01 SCREW (M4
×
16), TAPPING
* 21
4-900-169-01 PANEL (L), BACK (US)
* 21
4-900-169-11 PANEL (L), BACK (CND)
* 21
4-900-169-21 PANEL (L), BACK (SP, MY)
* 22
4-976-741-01 COVER, BUTTON
FL501
1-517-673-11 INDICATOR TUBE, FLUORESCENT
• Abbreviation
CND : Canadian
SP
SP
: Singapore
MY : Malaysia
a
a
b
b
#3
6
5
FL501
9
8
7
4
2
1
7
16
7
13
12
7
15
14
#1
#2
#2
#5
#5
#5
#3
#3
#3
#3
#3
#3
21
7
20
3
3
3
11
10
19
18
17
20
22
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