LG 65EF9500 Service Manual page 56

DVB-S2 LNB Part Allegro
(Option:LNB)
LNB_OUT
C6900
0.1uF
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 2015 LG Electronics Inc. All rights 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
C6904
LNB_ONSEMI
0.1uF
C6901 R6900
LNB 50V
2.2K
33pF
D6900 1W
LNB C6902
LNB LNB 0.22uF
LNB
25V
A_GND
A_GND
+12V
D6904-*1
LNB
40V
LPH6050T-150M-R
LNB_SX34
L6900
3.5A
D6904
40V 15uH
LNB_SMAB34
C6906 C6907
10uF 10uF
25V 25V
LNB LNB
A_GND
A_GND
VCP VIN
1 15
THERMAL
LNB GND
2 14
21
NC_1 VREG
D6903
3 13
IC6900
LNB_SMAB34
TDI ISET
A8303SESTR-T
40V 4 12
LNB
TDO TCAP
5 11
D6903-*1
LNB_SX34
40V
NC_1 VIN +3.3V_NORMAL
1 15
THERMAL
LNB GND
2 21 14
NC_2 VREG
3 13
IC6900-*1
TDI 4 DT1803 12 ISET
TDO LNB_DMBT TCAP
5 11
Input trace widths should be sized to conduct at least 3A
Ouput trace widths should be sized to conduct at least 2A
3A
Max 1.3A
C6909
10uF
25V
LNB
A_GND
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
BSD-15Y-LM14A-069_00-HD
LM14A
LNB
69
LGE Internal Use Only