LG 49UF6700 Service Manual page 39

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.
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 right reserved.
Only for training and service purposes
2A
LNB_DIODE_SUZHOU(MILTI)
D2703-*1
SS2040LL-LG
40V
LNB_DIODE_ONSEMI(MULTI)
D2703
30V
LNB LNB LNB
C2703 C2704 C2705
0.01uF 10uF 10uF
50V 25V 25V
close to Boost pin(#1)
LNB_DIODE_SUZHOU(MILTI)
D2702-*1
SS2040LL-LG
40V
LNB_DIODE_ONSEMI(MULTI)
D2702
MBR230LSFT1G
30V
LNB LNB
LNB
R2702 C2712 LNB_DIODE_KEC(MULTI)
C2713
2.2K 0.22uF 0.1uF D2704
1W 25V
50V 40V
LNB_DIODE_SUZHOU(MULTI)
D2704-*1
40V
A_GND A_GND
3A
+12V_LNB
LNB_DIODE_SUZHOU(MULTI)
D2705-*1
40V
Max 1.3A
LNB
L2702
LPH6050T-150M-R
D2705
15uH
LNB_DIODE_KEC(MULTI)
3.5A
SMAB34 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 14
21
NC_1 VREG
3 13
LNB
TDI IC2701 ISET
4 12
A8303SESTR-T(4M)
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
M1A_URSA9_UD
LNB
2014.04.24
27
LGE Internal Use Only