Central and South Americatuner block
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
TU3901
TDJA-T101F(A)
Close to Tuner
C1412
C1414
SCL
18pF
18pF
1
50V
50V
SDA
2
B[+3.3V]
3
CVBS
4
HALF_NIM/BRAZIL
R1405
IF_AGC
100
5
C1404
0.1uF
16V
SIF
HALF_NIM/BRAZIL
6
IF[N]
7
IF[P]
8
9
SHIELD
+3.3V_TU
UBW2012-121F
C1418
C1419
22uF
0.1uF
10V
16V
+3.3V_TU
R1427
R1428
1K
1K
R1411
33
TU_SCL
R1425
33
TU_SDA
+3.3V_TU
L1401
UBW2012-121F
C1408
C1405
0.1uF
100pF
16V
50V
should be guarded by ground
IF_AGC_MAIN
HALF_NIM/BRAZIL
R1404
10
IF_N_MSTAR
HALF_NIM/BRAZIL
R1403
10
IF_P_MSTAR
+3.3V_Normal
L1400
C1420
C1422
22uF
0.1uF
10V
16V
+3.3V_TU
C
CVBS_KEC
CVBS
CVBS
B
Q3701-*1
R3732
R3735
2N3906S-RTK
220
220
E
TU_CVBS
E
CVBS_NXP
Q3701
OPT
B
MMBT3906(NXP)
R3726
SIGN37000000
0
C
+3.3V_TU
OPT
SIF
R3731
SIF
0
R3725
R3728
470
82
TU_SIF
SIGN37000001
E
C
SIF
SIF_NXP
SIF_KEC
C3726
Q3700
B
Q3700-*1
MMBT3906(NXP)
2N3906S-RTK
0.1uF
SIF
B
R3724
16V
4.7K
C
E
close to TUNER
2014.08.11
L14_CA_M1A
14
TUNER_CSA
LGE Internal Use Only