LG 65UH8500 Service Manual page 76

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
Ground Width >= 24mils
1. should be guarded by ground
2. No via on both of them
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
1
I2C_SCL5_TU
2
I2C_SDA5_TU
close to Tuner
3 +3.3V_TU
C6502
0.1uF
TU_ALL
4
TU_CVBS_TU
TU_ALL_IntDemod
5
IF_AGC_TU
6
TU_SIF_TU
7
IF_P_TU
TU_ALL_IntDemod
8
IF_N_TU
TU_ALL_IntDemod
10 /TU_RESET1_TU
11 +3.3V_D_TU
12
LNB_TX
13 D_Demod_Core
14
FE_DEMOD1_TS_ERROR
15 FE_DEMOD1_TS_CLK
16
FE_DEMOD1_TS_SYNC
17
FE_DEMOD1_TS_VAL
18
FE_DEMOD1_TS_DATA[0]
19 FE_DEMOD1_TS_DATA[1]
20 FE_DEMOD1_TS_DATA[2]
21
FE_DEMOD1_TS_DATA[3]
22 FE_DEMOD1_TS_DATA[4]
23
FE_DEMOD1_TS_DATA[5]
24
FE_DEMOD1_TS_DATA[6]
25 FE_DEMOD1_TS_DATA[7]
I2C_SCL3_TU
I2C_SDA3_TU
26 LNB_OUT
FE_DEMOD2_TS_ERROR
FE_DEMOD2_TS_SYNC
FE_DEMOD2_TS_CLK
FE_DEMOD2_TS_VAL
FE_DEMOD2_TS_DATA
R6502
100
/TU_RESET2_TU
1/16W
TU_D_JP
C6501
0.1uF
16V
TU_D_JP
TU_ALL
R6507
33
I2C_SCL5
C6508
I2C_SDA5
47pF
R6508
50V
33
C6504 TU_ALL TU_ALL
TU_EXT_ATV
47pF C6512
TU_EXT_ATV
50V 0.1uF
TU_ALL 16V
+3.3V_TU
close to Tuner
R6505
1K IF_AGC
TU_ALL_IntDemod
C6503
0.1uF
16V
R6504
10
IF_P
C6507
33pF
should be guarded by ground,Match GND VIA
R6503
10 TU_ALL_IntDemod
IF_N
C6506
33pF
TU_ALL_IntDemod
TU_N/D
R6506
TU_N/D /TU_RESET1
100
C6505
+3.3V_TU
16V
0.1uF TU_N/D
R6509
0
C6510
0.1uF
TU_N/D
LNB_TX
D_Demod_Core
close to Tuner
FE_DEMOD1_TS_ERROR
FE_DEMOD1_TS_CLK
FE_DEMOD1_TS_SYNC
FE_DEMOD1_TS_VAL
+3.3V_TU
FE_DEMOD1_TS_DATA[0]
FE_DEMOD1_TS_DATA[1]
FE_DEMOD1_TS_DATA[2]
FE_DEMOD1_TS_DATA[3]
FE_DEMOD1_TS_DATA[4]
FE_DEMOD1_TS_DATA[5]
FE_DEMOD1_TS_DATA[6]
FE_DEMOD1_TS_DATA[7]
R6511 33
TU_D_JP
R6510 33
TU_D_JP
C6509 C6511
18pF 18pF
TU_D_JP TU_D_JP
LNB_OUT
FE_DEMOD2_TS_ERROR
FE_DEMOD2_TS_SYNC
FE_DEMOD2_TS_CLK
FE_DEMOD2_TS_VAL
FE_DEMOD2_TS_DATA
/TU_RESET2
+3.3V_TU
+3.3V_NORMAL
1608 perallel
because of derating
TU_EXT_ATV
R6512 R6514
200 200
C6513 TU_ALL C6500
TU_ALL
10uF
10uF
TU_CVBS
10V
10V
E
TU_EXT_ATV
B Q6502
MMBT3906(NXP)
C
TU_SIF_TU
I2C_SCL3
I2C_SDA3
TUNER
FE_DEMOD1_TS_ERROR
+3.3V_TU
2015.04.20
65
LGE Internal Use Only