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DVB-S2 LNB Part Allegro
(Option:LNB)
LNB_OUT
C6900
C6901
18pF
33pF
LNB
LNB
Close to Tuner
Surge protectioin
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 ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2A
LNB_TSC
D6902
D6902-*1
LNB_ONSEMI
SS23L
30V
30V
C6903
C6905
0.01uF
10uF
50V
25V
LNB
LNB
close to Boost pin(#1)
30V
SS23L
D6901-*1
LNB_TSC
D6901
MBR230LSFT1G
30V
D6903
C6904
LNB_ONSEMI
LNB_SMAB34
0.1uF
R6900
40V
LNB
50V
2.2K
D6900
1W
C6902
LNB
LNB
0.22uF
LNB
25V
D6903-*1
LNB_SX34
40V
A_GND
A_GND
3A
+12V
D6904-*1
Max 1.3A
40V
LNB_SX34
3.5A
D6904
40V
LNB_SMAB34
C6906
C6907
10uF
10uF
25V
25V
LNB
LNB
A_GND
A_GND
A_GND
VCP
VIN
1
15
THERMAL
LNB
GND
2
14
21
NC_1
VREG
3
13
IC6900
TDI
A8303SESTR-T
ISET
4
12
LNB
TDO
TCAP
5
11
+3.3V_NORMAL
LNB_ALEGRO
R6906-*1
0
Input trace widths should be sized to conduct at least 3A
Ouput trace widths should be sized to conduct at least 2A
C6909
10uF
25V
LNB
close to VIN pin(#15)
Caution!! need isolated GND
R6904
0
C6910
0.1uF
50V
LNB
A_GND
LNB
R6903
39K
1/16W
C6912
1%
LNB
0.1uF
LNB
PAGE 26
2012.03.08
69
LGE Internal Use Only
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