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THERMAL
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.
LNB 27 13
2013.1.14
A_GND
LNB_TX
C2709
0.1uF
50V
C2703
0.01uF
50V
C2711 0.22uF
C2706
10uF
25V
C2708
10uF
25V
LNB_OUT
D2703
30V
A_GND
L2701
BLM18PG121SN1D
C2702
33pF
R2705 33
C2705
10uF
25V
C2710
0.1uF
DEMOD_SCL
C2701
18pF
R2701
0
D2705-*1
40V
(OPT)LNB_SX34
C2704
10uF
25V
D2702
30V
MBR230LSFT1G
DEMOD_SDA
L2702
15uH
SP-7850_15
A_GND
R2702
2.2K
1W
+12V_LNB
+12V_LNB
D2704
40V
LNB_SMAB34
SMAB34
R2704 33
C2712
0.1uF
50V
C2714
18pF
A_GND
+12V_Normal
A_GND
D2701
D2704-*1
40V
(OPT)LNB_SX34
D2705
40V
LNB_SMAB34
SMAB34
C2707 0.1uF
A_GND
C2713
0.22uF
25V
R2703
36K
1/16W
1%
R2706
0
IC2701
A8303SESTR-T
1
VCP
3
NC_1
7
SCL
9
ADD
10
TONECTRL
11
TCAP
12
ISET
13
VREG
14
GND
15
VIN
16
LX
17
GNDLX
18
NC_2
19
NC_3
20
BOOST
5
TDO
8
SDA
6
IRQ
4
TDI
2
LNB
21
[EP]GND
NC4_S7LRM
Max 1.3A
Surge protectioin
Ouput trace widths should be sized to conduct at least 2A
close to Boost pin(#1)
close to TUNER
close to VIN pin(#15)
2A
Close to Tuner
Input trace widths should be sized to conduct at least 3A
3.5A
3A
Caution!! need isolated GND
Max 1.3A
DVB-S2 LNB Part Allegro
EAX65303801
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Only for training and service purposes
LGE Internal Use Only