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DVB-S2 LNB Part Allegro
(Option:LNB)
LNB_OUT
THE
SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE
SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
close to TUNER
LNB
LNB
R2702
LNB
LNB
LNB
LNB
C2713
2.2K
0.22uF
C2714
C2701
C2702
D2701
1W
25V
18pF
18pF
33pF
50V
50V
50V
Close to Tuner
Surge protectioin
A_GND
2A
LNB
D2703
SS23L
30V
LNB
LNB
LNB
LNB
C2703
C2704
C2705
C2706
0.01uF
10uF
10uF
10uF
50V
25V
25V
25V
close to Boost pin(#1)
A_GND
LNB
C2707
0.1uF
50V
LNB
D2702
SS23L
30V
LNB
LNB_SMAB34
LNB_SX34
C2712
D2704
D2704-*1
0.1uF
40V
40V
50V
A_GND
Input trace widths should be sized to conduct at least 3A
Ouput trace widths should be sized to conduct at least 2A
Max 1.3A
+12V_LNB
+12V
LNB
3A
L2701
BLM18PG121SN1D
+12V_LNB
LNB_SX34
D2705-*1
40V
LNB
L2702
LPH6050T-150M-R
D2705
15uH
LNB_SMAB34
Caution!! need isolated GND
3.5A
40V
LNB
C2708
10uF
25V
A_GND
close to VIN pin(#15)
A_GND
LNB
C2709
0.1uF
50V
NC_1
VIN
1
15
THERMAL
LNB
GND
2
21
14
LNB_DMB
NC_2
VREG
3
13
IC2701
TDI
ISET
4
12
DT1803
TDO
TCAP
5
11
LNB
LNB
LNB
C2710
R2703
C2711
0.1uF
36K
0.22uF
50V
1/16W
25V
1%
R2706
0
LNB
LNB
R2704
R2705
33
33
L15.5_ECI_M1A
LNB
R2701
0
A_GND
VCP
VIN
1
15
THERMAL
LNB
GND
2
14
21
NC_1
VREG
3
13
IC2701-*1
TDI
A8303SESTR-T
ISET
4
12
LNB_ALLEGRO
TDO
TCAP
5
11
150112
27
LGE Internal Use Only
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