LG 43LF510A Service Manual page 19

EAX66783401
LB56H
TU401
TDJS-G101D
SCL
1
SDA
2
B[+3.3V]
3
NC_1
4
IF_AGC
5
NC_2
6
IF[N]
7
IF[P]
8
9
SHIELD
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.
TUNER & IR
Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
IF
+3.3V_TU
R406 R407
2.2K 2.2K
R403
TUNER_SCL
C401 33
47pF
50V
+3.3V_TU
R404
TUNER_SDA
33
C402
47pF
50V
L401
close to the tuner pin. BLM18PG121SN1D
C404 C405
C406
100pF 0.1uF C407 C408
22uF
50V 0.1uF
16V 6.3V 10uF
16V
6.3V
R405
100
IF_AGC
C403
0.1uF
16V should be guarded by ground
R401
10
IF_P
R402
10
IF_N
Close to the tuner
+3.3V_M
IR
+3.3V_ST
AR401
10K
1/16W
KEY1 R408
100
KEY2
OPT
OPT
C409
VR402
0.1uF
16V
+3.3V_ST
12507WR-06L
L402
PZ1608U121-2R0TF
C410 C411
0.1uF 1000pF
16V 50V
LED
OPT
VR401 +3.3V_ST
OPT
R409
3.3K
IR
C412
OPT
100pF
VR403
50V
155_ECI_M8RR
TUNER & IR
P401
1
2
3
4
5
6
7
2015/03/03
4 8
LGE Internal Use Only