Circuit Diagrams and PWB Layouts
10.
10-7-2
System Power 2
19820_509.eps
System Power 2
B02
B02
2014-12-09
715G6165
System Power 2
13V/18V_SW
ADIN_Unicable
LINEDROP
12V_AMBILIGHT
AUDIO POWER & SWITCH
L751
1.0UH
DVDD3V3
C758
10uF 25V
LINEDROP
LO : 13V/18V
HI : 14V/19V
12V_SWITCH
DISEQC_OUT
12V_AMBILIGHT
R7
7
3
10K 1/
16W
5
%
R7
7
5
N
C
/100K 1/
16W
5
%
R782
0R051/8W
D751
FB340M
1
2
R779
NC/0R05 1/16W
LNB_EN
13V/18V_SW
R7
7
2
N
C
/100K 1/
16W
5
%
C766
0.1uF 50V
R783
0R05 1/10W
C757
470PF 50V
C763
1UF 16V
FB758
120R
1
2
+
C752
N
C
/100U
F
16V
R765
100K 1/10W 5%
R776
5.1KOHM +-5% 1/10W
R781
4.99K 1/16W 1%
R763
5.1KOHM +-5% 1/10W
Q750
AON4421
D
1
D
2
D
3
G
4
S
5
D
6
D
7
D
8
FB751
NC/1
2
0
R
1
2
C756
47NF 16V
FB752
120R
1
2
R757 33R 1/16W 5%
R750
10K 1/16W 5%
R761
27K 1/10W 5%
Q754
BC847C
C765
4.7uF K 25V
+
C666
NC/100UF 16V
R754
NC/10K 1/16W 5%
C751
NC/4.7UF 10V
R770
10K 1/10W 5%
Q753
AON4421
D
1
D
2
D
3
G
4
S
5
D
6
D
7
D
8
R753
27K 1/10W 5%
R780
34.8K 1/16W 1%
Q751
BC847C
C753
0.1uF 25V
R751
5.1KOHM +-5% 1/10W
R756
4K7 1/16W 5%
U751
MP8126DF-LF-Z
SGND
1
BY PASS
2
VDD
3
COMP
4
EN
5
LINEDROP
6
POK
7
TCAP
10
ILIMIT
11
VOUT
12
VBOOST
13
BST
14
SW
15
PGND
16
13V/18V
8
EXTM
9
EP
17
FB754
120R
1
2
R752
10K 1/10W 5%
FB759
120R
1
2
R764
10K 1/16W 5%
+
C667
NC/100UF 16V
L750
22UH
C762
100NF 16V
C761 22NF 25V
R766 10K 1/16W 5%
C759
220NF 16V
D750
FB340M
1
2
Q755
MMBT3904
R774
10K 1/16W 5%
R762
10K 1/16W 5%
R778
10K 1/16W 5%
FB750
120R
1
2
ZD752
MM
3
Z
3
V6B
1
2
R769
27K 1/10W 5%
R777
10K 1/16W 5%
R758 100K 1/16W 5%
C750
1UF 16V
+
C755
100U
F
16V
ZD750
PJ
S
D
24C
W
1
2
C754
10uF 25V
R759
10K 1/16W 5%
D752
FB340M
1
2
Q757
AON4421
D
1
D
2
D
3
G
4
S
5
D
6
D
7
D
8
Q752
BC847C
R760
10K 1/10W 5%
FB755
120R
1
2
C760
1UF 16V
R755
10K 1/16W 5%
ZD751
NC/P
J
S
D2
4
CW
1
2
C764
10UF 16V
PANEL_VCC
+12V
C767
4.7uF K 25V
+5V_SW
12V_LNB
DVDD3V3
12V_LNB
12V_AUDIO
PVDD
+12V
LNB_EN
12V_AMBILIGHT
12V_AUDIO
2
DVDD3V3
PANEL_VCC_ON/OFF
9,11
TUNER_LNB
14
GND
2,4,5,6,7,8,9,10,11,12,13,14,15
DVDD3V3
2,4,5,7,9,11,12,14,15
OPWRSB
2,4,7
+5V_SW
2,5,6,7,8,9,12,13,14
PVDD
7
DISEQC_OUT
14
12V_AMBILIGHT
15
+12V
2,7,9
LNB_EN
9
12V_AMBILIGHT
15
13V/18V_SW
14
LINEDROP
14
ADIN_Unicable
11
TUNER_LNB
12V_AUDIO
Panel VCC=12V or 5V
ADIN_UniCable
PANEL_VCC ON/OFF:
Normal:High
Stand_By:Low
TUNER_LNB
PANEL_VCC_ON/OFF
GND
OPWRSB
PANEL_VCC_ON/OFF
Yes
0R
5.1K
R751
NC
NC
Yes
+12V
LINEDROP
FB751
FB750
PANEL VCC
+5V
R767
10K 1/10W 1%
DVDD3V3
PVDD
+5V_SW
DISEQC_OUT
+12V
LNB POWER SUPPLY
ESD & Surge
Protect
R768
33K 1%
R771
2.7K 1%