LG OLED55C6P Service Manual page 79

DVB-S2 LNB2 Part Allegro
(Option:LNB2)
LNB_OUT2
C8500
15pF
LNB2
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 2016 LG Electronics Inc. All rights reserved.
Only for training and service purposes
2A
D8502-*1 D8502
LNB2_ONSEMI LNB2_SUZHOU
30V 40V
C8503 C8505
0.01uF 10uF
50V 25V
LNB2 LNB2
close to Boost pin(#1)
D8501-*1
30V
LNB2_ONSEMI
D8501
40V
C8504
LNB2_SUZHOU
0.1uF
C8501 R8500
50V
LNB2
33pF 2.2K
D8500 1W
LNB2 C8502
LNB2 LNB2 0.22uF
LNB2
25V
A_GND
A_GND
3A
+13V
3.0A
D8504
40V
LNB2
C8506 C8507
10uF 10uF
25V 25V
LNB2 LNB2
A_GND
A_GND
VCP VIN
1 15
THERMAL
LNB GND
2 14
21
NC_1 VREG
D8503
3 13
IC8500
LNB2
TDI A8303SESTR-T(4M) ISET
40V 4 12
LNB2
TDO TCAP
5 11
(12V)
+13V
Input trace widths should be sized to conduct at least 3A
Ouput trace widths should be sized to conduct at least 2A
(12V)
Max 1.3A
C8509
10uF
25V
LNB2
A_GND
close to VIN pin(#15) Caution!! need isolated GND
R8504
0
C8510
0.1uF
LNB2
50V
LNB2
A_GND
LNB2
R8503
39K
1/16W
C8512
1%
LNB2
0.1uF
LNA2 2014.04.29
70
LGE Internal Use Only