- 13 -
SCHEMATIC DIAGRAM
UD-503
UD-503
1
2
3
8
A
B
C
D
E
Z
4
5
6
7
PHONE PCB
Only UD-503
1L CH
2R CH
UD-503 R732:N.M
NT-503 R7320:OHM
Only UD-503
DGND
DGND
BAL_L
BAL_H
BAL_H
BAL_L
Q553B
TT8K11
SOURCE
3
GATE
4
DRAIN1
6
DRAIN2
5
Q552A
TT8K11
SOURCE
1
GATE
2
DRAIN1
8
DRAIN2
7
R736
10(D,1/4W)
C661
0.1u
R73
41
0k(F,2125)
J507
SJ-6316
6
5
4
2
3
7
8
9
1
P514
8P-SAN
1
2
3
4
5
6
7
8
Q555B
TT8K11
SOURCE
3
GATE
4
DRAIN1
6
DRAIN2
5
Q554A
TT8K11
SOURCE
1
GATE
2
DRAIN1
8
DRAIN2
7
C65
60
.022u(ECHU
)
C66
0
0.022u(ECHU
)
Q552B
TT8K11
SOURCE
3
GATE
4
DRAIN1
6
DRAIN2
5
P513
6P-SAN
1
2
3
4
5
6
Q557B
TT8K11
SOURCE
3
GATE
4
DRAIN1
6
DRAIN2
5
R73
8
10k(F,2125)
D52
7
RSB27V
1
2
J508
SJ-6316
6
5
4
2
3
7
8
9
1
D52
9
RSB27V
1
2
C65
9
0.022u(ECHU
)
Q556A
TT8K11
SOURCE
1
GATE
2
DRAIN1
8
DRAIN2
7
Q554B
TT8K11
SOURCE
3
GATE
4
DRAIN1
6
DRAIN2
5
R737
10(D,1/4W)
D53
0
RSB27V
1
2
Q553A
TT8K11
SOURCE
1
GATE
2
DRAIN1
8
DRAIN2
7
D52
8
RSB27V
1
2
C658
0.1u
R740
10(D,1/4W)
Q555A
TT8K11
SOURCE
1
GATE
2
DRAIN1
8
DRAIN2
7
Q557A
TT8K11
SOURCE
1
GATE
2
DRAIN1
8
DRAIN2
7
C65
70
.022u(ECHU
)
R73
9
10k(F,2125)
R741
10(D,1/4W)
Q556B
TT8K11
SOURCE
3
GATE
4
DRAIN1
6
DRAIN2
5
R73
51
0k(F,2125)
R732
VARI(2125)