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DVB-S2 LNB Part Allegro
(Option:LNB)
close to TUNER
LNB_OUT
LNB
LNB
LNB
LNB
C2714
C2701
C2702
D2701
18pF
18pF
33pF
Close to Tuner
Surge protectioin
Caution!! need isolated GND
R2701
0
A_GND
Max 1.3A
+12V
+12V_LNB
LNB
L2701
BLM18PG121SN1D
THE
SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE
SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
2A
LNB
D2703
30V
LNB
LNB
LNB
C2703
C2704
C2705
0.01uF
10uF
10uF
50V
25V
25V
close to Boost pin(#1)
LNB
D2702
MBR230LSFT1G
30V
LNB
LNB
LNB
R2702
C2712
LNB_SMAB34
C2713
2.2K
0.22uF
0.1uF
D2704
1W
25V
40V
50V
LNB_SX34
D2704-*1
40V
A_GND
A_GND
3A
+12V_LNB
LNB_SX34
D2705-*1
40V
Max 1.3A
LNB
L2702
SP-7850_15
D2705
15uH
LNB_SMAB34
3.5A
40V
LNB
C2708
10uF
LNB
25V
C2706
10uF
25V
A_GND
A_GND
A_GND
close to VIN pin(#15)
LNB
C2709
LNB
0.1uF
C2707
50V
0.1uF
VCP
VIN
1
15
THERMAL
LNB
GND
2
21
14
NC_1
VREG
3
13
LNB
TDI
ISET
IC2701
4
12
A8303SESTR-T
TDO
TCAP
5
11
LNB
C2711
0.22uF
R2706
0
LNB
LNB
R2704
R2705
33
33
Input trace widths should be sized to conduct at least 3A
Ouput trace widths should be sized to conduct at least 2A
LNB
R2703
36K
1/16W 1%
LNB
C2710
0.1uF
NC5_M1A
LNB
2013.04.29
27
LGE Internal Use Only
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