YORKVILLE AP4K, Service Manual, Page: 18 / 24

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K K
J J
I I
H H
G G
F F
E E
D D
C C
B B
A A
Display
Section:
Product(s):
Display.SchDoc
M1575 3 5 Sheet Of PCB#: Rev#:
Modified:
V01
File: 8/29/2013
AP4K
EML Rev#: 01
Tmp Date: 03/15/2013
RED
Clip B
LDB5D
RED
Clip A
LDA5D
GRN
0dB
LDA3D
GRN
-6dB
LDA2D
GRN
-40dB
LDA1D
GRN
0dB
LDB3D
GRN
-6dB
LDB2D
GRN
-40dB
LDB1D
OUT
1
-IN
6
+IN
7
LM339D
U1DA
LM339D
OUT
2
-IN
4
+IN
5
U1DB
LM339D
OUT
13
-IN
10
+IN
11
U1DC
LM339D
OUT
14
-IN
8
+IN
9
U1DD
LM339D
V
+
3
G
N
D
12
U1DE
LM339D
OUT
2
-IN
4
+IN
5
U2DB
LM339D
OUT
13
-IN
10
+IN
11
U2DC
LM339D
V
+
3
G
N
D
12
U2DE
YEL
Limit B
LDB4D
YEL
Limit A
LDA4D
MMBT3906LT1
Q2D
MMBT3906LT1
Q1D
1
/8
W
475R0
R8D
0
.1
W
10R0
R10D
1
/4
W
619R0
R9D
1/8W
2K0
R11D
1/8W
2K0
R12D
0.1W
7K50
R7D
GND
1
/8
W
249R0
R14D
1
/8
W
249R0
R15D
1
/8
W
2K0
R13D
GRN
Power
LD1D
W125
47R
R16D
GND
100N 25V
C1D
100N 25V
C2D
100N
25V
C3D
100N
25V
C4D
1/8W
100K0
R2D
1/8W
100K0
R5D
+
3
-
2
1
TL072
U3DA
+
5
-
6
7
TL072
U3DB
V
+
8
V
-
4
TL072
U3DC
1/8W
47K5
R1D
1/8W
47K5
R4D
1/8W
475R0
R3D
1/8W
475R0
R6D
CDSF4148
D4D
CDSF4148
D2D
CDSF4148
D1D
CDSF4148
D3D
GND
GND
GND
GND
Clip A
Clip B
Limit A
Limit B
Sense B
Sense A
10U
16V
C5D
10U
16V
C6D
1
9 W1DA
2
9 W1DB
3
9 W1DC
4
9 W1DD
5
9 W1DE
6
9 W1DF
7
9 W1DG
8
9 W1DH
9
9 W1DI
Sense B
Sense A
GND
Clip A
Limit A
Limit B
Clip B
Limit A
Limit B
Clip B
Clip A
Sense A
Sense B
+15V
-15V
+15V
+15V
+15V
+15V
-15V
-15V
W1D