4
1
2
3
4
1
2
3
4
C
D
F
A
B
E
VSX-9300TX
J
3/3F
OLDET
U-COMDCDET
FURNITURE
TL
TR
DEMRST
DEMSTP
MRH
SW2
SW3
SW4
VF
FLAC2
FLAC1
FOPTG
FOPT
FOPT5V
GNDA
EXPCK
EXPDT
EXPST
EXPST
EXPCK
EXTH
PHONOG
DSDM
OSDON
LOFAN
FANDRV
FUNC
MUTE
OLDET
SDET
OSDON
MUTE
SW2
EXPOE
SW5
U+5V
EXPOE
232CTXD
232CRXD
232CCTS
CLK
1
2
3
DI
RDY
RST
OLDETO
DCDET
OSDCS
OSDRST
EN
CMVSS
XRESET
1WWUP
26
SDET
I2CCK
I2CDT
SW3
SW4
SW5
FVY
FVC
MRIN
AMUTE
FV
MRMUTE
232CCTS
232CDET
RXD232C
TXD232C
FURN
24
23
25
22
21
12VDET
12VTRG
AMU
MRMU
FAN_STOP
TEMP
TUNER
DISPLAY
DSP
U-COM
TUNERDI
TUNERCK
TUNERDO
TUNERCE
VSS
Q'S'
Q'S
CLK
NC
2296SW2
2296SW5
2296SW4
2296SW3
FOPT5V
FOPT
FOPTG
NC
FL AC1
VF
FL AC2
GNDA
GNDA
V+15
V-15
GNDA
WAKE UP
TG
NC
V+5.6
ST+5.6
V+12
GNDU
STB
DATA
VDD
OE
VSS
Q'S
Q'S'
CLK
DATA
STB
OE
VDD
SDET
SW2
OSDON
MUTE
DISP/OSD DI
DSP DO
DSP DI
DSP CLK
DISP DO
DISP/OSD CLK
DISP RST
DISP RDY
OSD CONT
15.7MHz
DISP EN
OSD CS
OSD RST
NMI
WAKE UP
1W WUP
1394INT
Xin
Xout
5V
GND
XRESET
CMVSS
SW3
SW4
FVY
FVC
SW5
FV
VEF1040
551
A MUTE
1394DO
1394DI
1394CK
GND
1394RST
1394CS
VREF
VCC
FAN STOP
TEMP IN
GND
VSM
TR
TG
FM DET
+9V
TL
+9V
TUNER CE
TUNER DI
TUNER CLK
TUNER DO
TG
EXPECT AWX8436
8
9
6
7
4
5
13
12
11
10
1
7
3
2
4
6
5
2
1
2
3
1
7
8
5
6
3
4
9
2
3
1
14
16
15
6
7
8
4
5
9
13
11
12
10
3
1
2
16
15
14
10
9
8
7
32
33
29
30
31
37
36
35
34
27
26
25
28
B
E
C
21
23
22
24
17
18
20
19
13
15
16
14
11
12
9
10
6
5
4
3
2
1
86
75
4
321
E
C
E
C
B
B
5
876
1
2
43
98
99
100
94
95
96
97
6
10
8
11
E
7
9
2
4
53
1
B
C
0.01
10k
stby
stby
stby
10k
10k
10k
XKP3074
10k
10k
10k
KM250NA3L
XKP3075
GNDA
V-15
V+15
V+12V
2.7
GNDT
100
100
100
100
BU4094BCF
0.01
10k
10k
10k
10k
100
100
stby
stby
stby
BU4094BCF
PF10PG-B10
0
1k
1SS355
0.047
10k
1SS355
100
10k
stby
GNDU
V+5_6
1SS355
ST+5_6
1SS355
1SS355
1SS355
10k
10k
100
stby
10k
U+5V
220/10
0.01
10k
10k
DTC143EUA
1SS355
0.047
PCH1132-
1SS355
68k
STBY
0.01
2.2u
100
0.01
1u
1M
1SS355
47k
ASS7032
stby
stby
100K
330/10
0
0.01
5.1k
B8B-PH-K-S
GNDU
V+5_6
stby
100
100/16
2.2u
2.2/50
V-15
4700p
47k
0.01
47k
1k
1k
DTA124EUA
470/10
DTA124EUA
GNDA
GNDT
UDZS10B
STBY
STBY
470
STBY
1SS355
47K
52045-1145
2SD1858X(PQ)
470
470
470
470
V+12V
C533
C531
C532
R539
R537
R536
R538
C535
CN3
TP6
R542
R541
R540
TP7
CN2
CN1
TP33
R599
R531
R533
R532
R562
IC502
C540
R554
R553
R561
R555
C539
R551
C537
C536
R556
IC503
R591
D832
D822
C831
R832
D821
R831
D831
R534
R535
C534
TP5
D521
D523
D522
D524
TP4
R560
R559
R557
R558
C513
R522
R552
C538
C514
C504
C821
C506
C507
C508
C509
R821
R503
R501
Q501
C510
X501
D501
R504
C501
C503
R505
C502
R502
R529
J602
C251
CN551
R578
R579
C602
C601
C505
L501
R512
C512
R252
R511
R251
Q511
C511
TP3
TP2
Q251
D511
C906
C907
D601
D602
R605
R598
CN601
R604
R603
R601
R602
R607
Q601
CN1902
F
CN3202
I
CN2414
Z
CN2415
Z
CN2412
FM/AM TUNER
UNIT
Z
1/3
J
1/3
J
1/3
J
9V Reg.
MR Mute
Reset
Port Expander
NOTES:
• When ordering service parts, be sure to refer to “EXPLODED VIEWS
and PARTS LIST” or “PCB PARTS LIST”.
• The
>
mark found on some component parts indicates the importance
of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
• : The power supply is shown with the marked box.
(TX)
(TX)
2. SCHEMATIC DIAGRAM
2.1 MAIN CONTROL ASSY(3/3)
