LG 50PM4700-TA (CHASSIS:PA22A) Service Manual ▷ View online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
FE_TS_D[2]
FE_TS_D[1]
FE_TS_D[0]
FE_TS_D[3]
FE_TS_D[4]
FE_TS_D[6]
FE_TS_D[5]
FE_TS_D[7]
AR1002
33
1/16W
33
1/16W
T2_S_BR
R1002
51
S
C1000
0.1uF
16V
R1021
3.3K
S
C1007
10uF
6.3V
S
R1011
2.2K
S
+3.3V_TU
C1002
1000pF
50V
S
C1001
0.1uF
16V
R1004
22 S
FE_TS_CLK
I2C_SCL6
+3.3V_TU
C1010
0.1uF
16V
S
I2C_SDA6
C1005
0.1uF
16V
S
TU_SIF
R1020
3.3K
S
LNB_TX
+1.8V_TU
+1.25V_TU
C1003
10uF
6.3V
I2C_SDA4
R1006
4.7K
FE_TS_SYNC
TU_CVBS
S2_RESET
I2C_SCL4
DIF_P
AR1001
33
1/16W
33
1/16W
T2_S_BR
FE_TS_D[0-7]
C1008
10uF
6.3V
S
C1009
33pF
50V
S
FE_TS_VAL
C1004
0.1uF
16V
S
+3.3V_TU
IF_AGC
+3.3V_TU
DIF_N
D1000
3.0SMCJ20A(suzhougrande)
S
R1005
22 S
LNB_OUT
R1013
82
C1014
10uF
6.3V
C1013
0.1uF
16V
R1000
0
T2_BR
R1003
0
T2_BR
+1.25V_TU
RF_SW_CTL
R1027
2.2K
2.2K
1W
S
ATV_OUT
Q1002
MMBT3906(NXP)
E
B
C
Q1000
MMBT3906(NXP)
EU
E
B
C
Q1001
MMBT3906(NXP)
E
B
C
R1015
22
R1016
22
C1017
10pF
50V
10pF
50V
OPT
R1007
10K
NO_T2_BR
C1006
0.047uF
25V
NO_T2_BR
TU1001
TDSS-G101D
TDSS-G101D
DVB_T/C
5
+3.3V
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+1.8V
6
SIF
12
SHIELD
TU1001-*1
TDSS-H101F
ATSC_NT
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
12
SHIELD
TU1002-*1
TDSN_B001F
TDSN_B001F
ATSC_BR
1
RF_S/W_CTL
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_1
10
NC_2
11
NC_3
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_4
15
GND
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
SHIELD
TU1000
TDSQ-G001D
S
1
NC_1
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
T/C_IF_AGC
10
T/C_DIF[P]
11
T/C_DIF[N]
12
NC_2
13
NC_3
14
NC_4
15
GND_1
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
GND_2
29
GND_3
30
+B3[1.23V]
31
S2_RESET
38
SHIELD
32
+B4[3.3V]
33
S2_F22_OUTPUT
34
S2_SCL
35
S2_SDA
36
LNB
37
GND_4
DAC_3V3
L1000
BLM18PG121SN1D
+3.3V_TU_BUF
C1018
0.1uF
16V
+3.3V_TU_BUF
+3.3V_TU_BUF
+3.3V_TU_BUF
R1014
200
1/10W
R1028
200
1/10W
EU
R1029
200
1/10W
EU
R1017
200
1/10W
R1009
1K
BR_CO
R1012
470
1/10W
1/10W
C1021
0.1uF
16V
NO_EU
C1019
0.1uF
16V
C1012
68pF
50V
68pF
50V
C1011
68pF
50V
68pF
50V
C1020
0.01uF
50V
0.01uF
50V
TU1003
TDSH-T101F
TDSH-T101F
ATSC_CO
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
RF_S/W_CTL
9
IF_AGC
8
CVBS
3
SCL
7
+B2[1.8V]
6
SIF
12
SHIELD
C1022
10uF
6.3V
OPT
R1030
4.7K
Q1003
MMBT3904(NXP)
E
B
C
R1001
10K
10K
TU_RST
R1008
0
+3.3V_TU_BUF
AR1000
33
1/16W
33
1/16W
T2_S_BR
TU1002
TDSN-G301D
TDSN-G301D
DVB_T2
1
NC_1
2
RESET
3
SCL
4
SDA
5
+B1[3.3V]
6
SIF
7
+B2[1.8V]
8
CVBS
9
NC_2
10
NC_3
11
NC_4
12
+B3[3.3V]
13
+B4[1.23V]
14
NC_5
15
GND
16
ERROR
17
SYNC
18
VALID
19
MCLK
20
D0
21
D1
22
D2
23
D3
24
D4
25
D5
26
D6
27
D7
28
SHIELD
close to TUNER
Close to the tuner
TUNER [DVB-T/C/S2, TDSQ-G001D, H/NIM,F/NIM]
[DVB-T/C, TDSS-G101D, H/NIM]
[DVB-T2/C, TDSN-G301D, F/NIM]
[ATSC-KR/US, TDSS-H101F, H/NIM]
[ATSC-BR, TDSN-B001F, F/NIM]
[ATSC-CO, TDSH-T101F, H/NIM]
[DVB-T/C, TDSS-G101D, H/NIM]
[DVB-T2/C, TDSN-G301D, F/NIM]
[ATSC-KR/US, TDSS-H101F, H/NIM]
[ATSC-BR, TDSN-B001F, F/NIM]
[ATSC-CO, TDSH-T101F, H/NIM]
Surge protectioin
Close to Tuner #38 pin
CLOSED TO TUNER
THERMAL
THERMAL
THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
C1135
0.01uF
50V
0.01uF
50V
S
C1141
0.1uF
50V
S
C1145
10uF
16V
16V
S
IC1106
TPS54231D
S
3
EN
2
VIN
4
SS
1
BOOT
5
VSENSE
6
COMP
7
GND
8
PH
R1139
6.8K
1%
S
D1100
40V
SMAB34
S
R1135
51K
51K
S
R1127
16K
S
C1144
470pF
50V
470pF
50V
S
+5V_ST
L1106
22.0uH
22.0uH
S
EAP61606601
+3.3V_ST
IC1100
AP2121N-3.3TRE1
1
GND
2
VOUT
3
VIN
C1101
0.1uF
16V
P_+17V
R1128
3.6K
S
+12V_LNB
C1131
10uF
25V
10uF
25V
S
R1138
120K
1%
S
C1147
15pF
50V
15pF
50V
S
C1146
10uF
16V
16V
S
C1140
0.01uF
50V
0.01uF
50V
S
C1112
0.1uF
50V
C1103
0.1uF
16V
C1102
0.1uF
16V
AC_DET
P_+5V
C1109
10uF
10V
L1101
CIS21J121
C1110
10uF
10V
+5V_ST
P1100
SMAW200-H18S1
14
NC
9
NC
4
GND
18
GND
13
5V_ST
8
PSU_ERR
3
GND
17
MOD_ON
12
GND
7
NC
2
17V
16
AC_DET
11
GND
6
5V
1
17V
15
RL_ON
10
GND
5
5V
19
P_+17V
L1100
CIS21J121
MOD_ON
C1113
0.1uF
16V
PSU_ERR_DET
RL_ON
C1152
22uF
6.3V
22uF
6.3V
C1118
1uF
10V
1uF
10V
C1151
22uF
6.3V
22uF
6.3V
C1106
10uF
25V
10uF
25V
P_+17V
R1104 10K
C1104
10uF
25V
10uF
25V
IC1101
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
+3.3V_MULTI
C1149
3300pF
50V
3300pF
50V
C1107
22pF
50V
C1117
10uF
6.3V
+1.8V_TU
R1113
1
T2_S_BR
C1116
10uF
6.3V
T2_S_BR
C1120
10uF
6.3V
+3.3V_MULTI
IC1104
AZ1117BH-ADJTRE1
2
OUTPUT
3
INPUT
1
ADJ/GND
+1.25V_TU
C1119
10uF
6.3V
T2_S_BR
R1114
1
+3.3V_MULTI
+3.3V_MULTI
C1148
0.1uF
16V
+3.3V_TU
C1126
22uF
6.3V
22uF
6.3V
C1123
3300pF
50V
3300pF
50V
C1121
22pF
50V
IC1105
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
P_+17V
C1122
1uF
10V
1uF
10V
R1117 10K
C1125
22uF
6.3V
22uF
6.3V
R1106
18K
1%
+1.5V_DDR
C1124
0.1uF
16V
C1150
0.1uF
16V
L1107
2.2uH
NR5040T2R2N
L1103
2.2uH
NR5040T2R2N
IC1103
AZ1117BH-ADJTRE1
T2_S_BR
OUTPUT
INPUT
ADJ/GND
C1115
0.1uF
16V
OPT
L1104
2uH
IC1102
AOZ1038PI
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
NC_1
8
NC_2
9
[EP]LX
R1118
10K
OPT
+5V_ST
POWER_ON1
+1.2V_MTK_CORE
C1114
10uF
25V
10uF
25V
C1111
10uF
25V
10uF
25V
POWER_ON2
R1145
0
0
OPT
POWER_ON3
R1116
0
0
OPT
R1108
3.3K
C1127
4700pF
50V
C1100
10uF
10V
C1108
10uF
10V
R1107
0
0
OPT
POWER_ON4
C1138
22uF
6.3V
22uF
6.3V
R1122
10K
1%
R1119
82
1%
R1131
180
5%
L1102
CIS21J121
C1132
10uF
6.3V
C1130
10uF
6.3V
C1133
10uF
6.3V
C1128
10uF
6.3V
C1105
1uF
10V
C1129
100uF
16V
R1140
1.6K
1%
S
R1115
51K
1%
R1146
27K
1%
R1102
33K
1%
R1103
10K
1%
R1120
10K
L1108
BLM18PG121SN1D
L1109
BLM18PG121SN1D
L1110
BLM18PG121SN1D
T2_S_BR
L1111
BLM18PG121SN1D
L1112
BLM18PG121SN1D
L1113
BLM18PG121SN1D
S
R1112
240
T2_S_BR
R1111
1
T2_S_BR
R1121
5.6K
1%
*NOTE 13
R1
-->3.12V
17V->12V
+3.3V_Stand_By
fr. PWR SUPPLY UNIT
R2
Max 1.3A
Vout=0.8*(1+R1/R2)
2A
R1
3A
Vout=0.765*(1+R1/R2)
R2
R1
+1.25V_TU
*V0=1.25(1+1/240)
1.250000=1.25*(1)
1.250000=1.25*(1)
R2
*V0=1.25(1+82/180)
=1.8194
=1.8194
+1.8V_TU
R2
3A
Vout=0.765*(1+R1/R2)
R1
6A
Vout=Vref*(1+R1/R2)|Vref=0.8
R2
Switching freq: 555K
Placed on SMD-TOP
R1
+1.2V_CORE_MT5369
THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
DCDC_GND
IC1200
A8290SETTR-T
S
1
BOOST
3
TCAP
7
TDI
9
VREG
10
SDA
11
ADD
12
SCL
13
NC_2
14
IRQ
15
NC_3
16
NC_4
17
NC_5
18
NC_6
19
BFC
20
NC_7
21
NC_8
22
BFO
23
NC_9
24
BFI
25
VIN
26
LX
27
GNDLX
28
LNB
5
TDO
8
GND
6
EXTM
4
NC_1
2
VCP
29
[EP]
C1200
0.22uF
25V
S
C1201
1uF
50V
1uF
50V
S
I2C_SDA4
C1204
0.1uF
50V
0.1uF
50V
S
A_GND
LNB_OUT
A_GND
R1203
33
S
D1203
40V
SMAB34
S
LNB_TX
DCDC_GND
C1210
27pF
OPT
C1207
22000pF
S
R1202
33
S
R1201
0S
0S
C1208
0.01uF
50V
0.01uF
50V
S
+3.3V_MULTI
I2C_SCL4
A_GND
A_GND
C1209
0.22uF
S
A_GND
A_GND
A_GND
R1204
0
OPT
DCDC_GND
C1213
0.1uF
50V
0.1uF
50V
S
A_GND
L1200
33UH
SP-7850_33
S
D1202
40V
SMAB34
S
R1200
0S
0S
DCDC_GND
C1205
0.1uF
S
R1205
4.7K
S
D1201
40V
SMAB34
S
C1211
27pF
OPT
+12V_LNB
A_GND
C1202
68uF
35V
68uF
35V
S
C1203
68uF
35V
35V
S
D1200
30V
MBR230LSFT1G
S
C1212
10uF
16V
S
close to VIN pin(#25)
close to Boost pin(#1)
PCB_GND and A_GND are connected
DVB-S2 LNB Part_Allegro
DCDC_GND and A_GND are connected
DCDC_GND and A_GND are connected in pin#27
2.4A
3A
2A
Click on the first or last page to see other 50PM4700-TA (CHASSIS:PA22A) service manuals if exist.