Onkyo TX-L55 Service Manual page 15

A B
SCHEMATIC DIAGRAM 3
DSP section 2
1
U1
P2102
1 4
2 5
6
8 11
9 12
13
15 C2108
102K
2
P2104
1 4
2 5
6
8 11
9 12
13
15 18
16 19
20
3
22 C2113
102K
4
5
C
V1COUT
V2CIN
DVDCIN
+5VVD
NADG-8338
-5VVD
C2127 104Z V2CIN
C2119 10/16 V2YIN V1CIN
+
COUT2
C2120 10/16
V2VIN
+
COUT1
R2128 75 V1COUT V1YOUT
V2YIN
R2129 75
V1YOUT
DVDYIN
R2130 75
V1VOUT
+5VVD
C2128 104Z V1CIN
-5VVD
C2121 10/16 V1YIN
+
C2122 10/16 V1VIN
+
V1YIN
YOUT2
C2129 104Z DVDCIN
YOUT1
C2123 10/16
DVDYIN
+
C2124 10/16
DVDVIN V1VOUT
+
V2VIN
DVDVIN
R2161 75 COUT2
R2162 75 YOUT2
+5VVD
R2163 75 VOUT2
-5VVD
V1VIN
VOUT2
VOUT1
D E
SW2
SW1
NJM2279M
Q2101
SW2
SW2
SW1
NJM2279M
Q2102
SW2
SW2
SW1
NJM2279M
Q2103
SW2
F G
+12VA 78M12HF
Q9602
3 1 R9602
O I
G
1
G
R9603
3 2
O I
1
Q9603
-12VA
79M12HF
+18V
78M05HF 78M12HF
+5VVD
Q9604 Q9609
R9604 R9513
3 1 3 1
O I O I
G G 1.5 NC
D9503 D9502
1
RL1N4003 RL1N4003
D9505 D9504
Q9609A 1
RL1N4003 RL1N4003
G
R9605 R9514
3 2
O I
1.5 NC
-18V
Q9605
79M05FA -B
-5VVD
+5VDSP
MPC2905HF
Q9606 +8V
R9610
3 1
O I
G NC
1 4
D9513
D2SB80A
GND
Q9602B
D9609
R9607
1
+5.6V
NC NC
78M56
Q9608
D9610 R9608 +9V
3 1 1
O I
G NC
NC
-VP
Q9501
-42V
2SA1015-GR
D9507
1 2 R9506 1 R9501
22 RL1N4003 2.2
R9507
8.2K
R9508
8.2K
+5VTU +12VA
R9609
330
E9501
TO NAVD-8344
TO NAVD-8339
+5VDSP -5VVD+5VVD +9VD
TX-L55
H
R9510
NC
1
3
2
1
1
P9001B
R9511
NC
2
1
P9002B
R9512
2.5A/250V
4
3
2
1
P9101B
+13V
POWER
POFF
4
3
FLAC1 2
FLAC2 1
P9003B
+13V
POWER
FLAC1
FLAC2
SW1
SW2
VMUT1
VMUT2
SCL
SDA
CONV
CPNT
DIN1
DIN2
DIN3
SDET