55LM4700 (CHASSIS:LA21B) — LG TV Service Manual (repair manual). Page 36

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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.
FE_TS_DATA[1]
FE_TS_DATA[2]
FE_TS_DATA[5]
FE_TS_DATA[3]
FE_TS_DATA[4]
FE_TS_DATA[0]
FE_TS_DATA[7]
FE_TS_DATA[6]
IF_AGC_SEL
C3737
100pF
50V
C3743
20pF
50V
TU_I2C_FILTER
C3739
10uF
6.3V
OPT
DEMOD_SCL
C3730
10uF
10V
FULL_NIM
R3705
0
RF_SW_OPT
C3711
18pF
50V
TU_I2C_NON_FILTER
R3758
82
R3732
100
R3748
11K
FULL_NIM_BCD
R3733
100K
TU_CVBS
C3708
0.1uF
16V
R3771
10K
FULL_NIM_OPT
C3715
22uF
10V
R3756
0
TU_NON_BUFFER
C3702
0.1uF
16V
NON_ASIA
C3729
0.1uF
16V
FULL_NIM
R3749
0
TU_BUFFER
IF_AGC_MAIN
L3704
FULL_NIM
+3.3V_TU
IF_N_MSTAR
C3727
0.1uF
16V
DEMOD_RESET
C3705
100uF
16V
OPT
R3740-*1
1K
TU_IIC_NON_ATSC_1K
+3.3V_TU
IC3701
AP2132MP-2.5TRG1
FULL_NIM_BCD
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
LNA2_CTL
RF_SWITCH_CTL
R3760
0
HALF_NIM
+3.3V_TU
R3769
10K
FULL_NIM
TU3700-*1
TDSS-H101F
SI2176_ATSC_1INPUT_H
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
+1.8V_TU
C3741
10uF
10V
+3.3V_TU
R3741-*1
1K
TU_IIC_NON_ATSC_1K
C3716
0.1uF
16V
HALF_NIM
C3717
0.1uF
16V
+1.23V_TU
+5V_Normal
DEMOD_SDA
C3710
0.1uF
16V
TUNER_RESET
FE_TS_DATA[0-7]
R3753
4.7K
TU_BUFFER
TU_SDA
C3740
0.1uF
16V
C3707
100pF
50V
TU_SIF
R3775
0
TU_NON_BUFFER
+3.3V_Normal
+3.3V_TU
R3761
0
HALF_NIM
+3.3V_TU
+3.3V_TU
C3713
18pF
50V
TU_I2C_NON_FILTER
R3750
1K
OPT
+1.8V_TU
FE_TS_SYNC
IF_P_MSTAR
C3725
0.1uF
16V
TU_SCL
C3738
0.1uF
16V
C3701
0.1uF
16V
C3718
0.1uF
16V
FULL_NIM
+1.23V_TU
FE_TS_CLK
C3723
22uF
10V
FE_TS_VAL_ERR
C3742
20pF
50V
TU_I2C_FILTER
TU3703
TDSN_B001F
SI2176_BR_2INPUT_H
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
TU3704
TDSH-T101F 
SI2176_TW_2INPUT_H
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
R3751
220
TU_BUFFER
R3752
220
TU_BUFFER
R3766
1
R3774
470
TU_BUFFER
R3747
20K
1005
FULL_NIM_BCD
R3776
10K
FULL_NIM_BCD
R3785
0
ASIA
R3782
2K
ASIA
R3786
0
ASIA
C3751
10pF
50V
ASIA
C3750
10pF
50V
ASIA
R3783
0
NON_ASIA
C3702-*1
0
ASIA
R3784
0
NON_ASIA
IC3701-*1
TJ4220GDP-ADJ
FULL_NIM_TJ
3
VIN3
2
EN2
4
NC4
1
NC_1
5
NC_2
6
VOUT
7
ADJ/SENSE
8
GND
9
[EP]GND
R3748-*1
5.1K
FULL_NIM
R3776-*1
0
FULL_NIM_TJ
R3747-*1
9.1K
FULL_NIM_TJ
IC3703
AP1117E18G-13 
2
OUT
3
IN
1
ADJ/GND
L3703
CIS21J121
L3706
120
FULL_NIM
Q3703
MMBT3906(NXP) 
TU_BUFFER
E
B
C
Q3705
MMBT3906(NXP) 
TU_BUFFER
E
B
C
R3713
0
FULL_NIM_BCD
R3710
200
1%
OPT
R3704
100
HALF_NIM
R3740
1.8K
TU_IIC_ATSC_1.8K
R3741
1.8K
TU_IIC_ATSC_1.8K
R3741-*2
1.2K
TU_IIC_ATSC_1.2K
R3740-*2
1.2K
TU_IIC_ATSC_1.2K
TU3700
TDSS-G201D
SI2156_DVB_1INPUT_H
5
+B1[3.3V]
11
DIF[N]
2
RESET
10
DIF[P]
4
SDA
1
NC_1
9
IF_AGC
8
NC_3
3
SCL
7
+B2[1.8V]
6
NC_2
12
SHIELD
R3780
390
ASIA
R3781
390
ASIA
R3741-*3
2.2K
TU_IIC_BR_2.2K
R3740-*3
2.2K
TU_IIC_BR_2.2K
R3735
TU_I2C_NON_FILTER
33
R3736
TU_I2C_NON_FILTER
33
C3711-*1
20pF
50V
TU_I2C_FILTER
C3713-*1
20pF
50V
TU_I2C_FILTER
R3735-*1
TU_I2C_FILTER
R3736-*1
TU_I2C_FILTER
R3711
0
TUNER_NON_EU
GP4L_S7LR2
2011.10.11
14
R1
should be guarded by ground
FE_BOOSTER_CTL
380mA
R2
close to the tuner pin, add,09029
Close to the CI Slot
FE_AGC_SPEED_CTL
Pull-up can’t be applied 
because of MODEL_OPT_2
60mA
close to TUNER
Close to the tuner
BCD Vo=0.6*(1+R1/R2)
Add,0929
TUNER MULTI-OPTION
1. should be guarded by ground
2. No via on both of them
3. Signal Width >= 12mils
   Signal to Signal Width = 12mils
   Ground Width >= 24mils
Size change,0929
close to TUNER
GLOBAL tuner block except EU and China
TJ  Vo=0.8*(1+R1/R2)
Vo=VREF*(1+R2/R1)
VREF = 1.25V
R1
R2
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.
2011/10/04
HEADPHONE
15
GP4L_S7LR2
R1500
3.3K
HEAD_PHONE_POP
C1500
10uF
16V
HEAD_PHONE
C1501
10uF
16V
HEAD_PHONE
JK1500
KJA-PH-0-0177
HEAD_PHONE
3
DETECT
4
L
5
GND
1
R
+3.3V_Normal
R1504
10K
HEAD_PHONE
C1503
1000pF
50V
OPT
HP_LOUT
R1503
1K
HEAD_PHONE
HP_DET
+3.5V_ST
HP_ROUT
SIDE_HP_MUTE
R1501
1K
HEAD_PHONE
C1502
1000pF
50V
OPT
R1502
1K
HEAD_PHONE
Q1502
MMBT3904(NXP)
HEAD_PHONE_POP
E
B
C
Q1503
MMBT3904(NXP)
HEAD_PHONE_POP
E
B
C
Q1505
MMBT3904(NXP)
HEAD_PHONE_POP
E
B
C
Q1504
MMBT3904(NXP)
HEAD_PHONE_POP
E
B
C
Q1501
MMBT3906(NXP) 
HEAD_PHONE_POP
E
B
C
Q1500
MMBT3904(NXP)
HEAD_PHONE_POP
E
B
C
JK1500-*1
PEJ031-01
HEAD_PHONE_32LS3500
3
DETECT
4
L
5
GND
1
R
Headphone  *Option : HEAD_PHONE
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.
AMP_SCL
D501
100V
1N4148W
OPT
R517
4.7K
0.1uF
C538
50V
+24V_AMP
C505
1000pF
50V
R520
10K
NON_LIPS
0.1uF
C519
50V
SPK_L-
SPK_L+
R502
10K
NON_LIPS
AMP_MUTE
0.1uF
C508
16V
C504
1000pF
50V
C526
22000pF
50V
0.1uF
C501
50V
C518
22000pF
50V
R506
100
NON_LIPS
R507
3.3
OPT
0.1uF
C537
50V
+3.5V_ST
L505
10.0uH
+24V
R519
4.7K
D503
100V
1N4148W
OPT
0.1uF
C513
16V
L502
BLM18PG121SN1D
AUD_LRCH
AUD_LRCK
C535
0.47uF
50V
0.1uF
C521
50V
C534
1uF
25V
AMP_RESET
C527
22000pF
50V
C517
22000pF
50V
D502
100V
1N4148W
OPT
L504
10.0uH
0.1uF
C514
16V
C509
33pF
50V
SPK_R+
R518
4.7K
C510
10uF
10V
OPT
C529
1uF
25V
R521
10K
0.1uF
C522
50V
P501
WAFER-ANGLE
1
2
3
4
R501
10K
NON_LIPS
AMP_SDA
SPK_R-
C532
390pF
50V
AUD_SCK
+24V_AMP
L506
10.0uH
D504
100V
1N4148W
OPT
0.1uF
C539
50V
SPK_R-
0.1uF
C540
50V
C531
390pF
50V
AUD_MASTER_CLK
0.1uF
C502
50V
R503
100
C515
10uF
10V
SPK_R+
C523
10uF
35V
C507
33pF
50V
C516
1000pF
50V
C503
100pF
50V
SPK_L-
R516
4.7K
+24V_AMP
C528
1uF
25V
C511
10uF
10V
OPT
R504
100
0.1uF
C520
50V
C512
0.1uF
16V
R505
3.3K
C536
0.47uF
50V
C533
390pF
50V
C530
390pF
50V
L503
10.0uH
+3.3V_Normal
C524
10uF
35V
SPK_L+
R522
0
LIPS_ONLY
POWER_DET
C506
4.7uF
16V
OPT
C525
0.01uF
50V
OPT
R508
12
R509
12
R510
12
R511
12
R512
12
R514
12
R513
12
R515
12
Q501
MMBT3904(NXP)
NON_LIPS
E
B
C
L501
CIS21J121
IC501
NTP-7500L
1
AGND_PLL
2
AVDD_PLL
3
DVDD_PLL
4
LF
5
DGND_PLL
6
GND_1
7
DGND
8
DVDD
9
SDATA
10
WCK
11
BCK
12
SDA
13
SCL
14
/FAULT
15
MONITOR0
16
MONITOR1
17
MONITOR2
18
BST2B
19
PGND2B
20
OUT2B_1
21
OUT2B_2
22
PVDD2_1
23
PVDD2_2
24
PVDD2_3
25
OUT2A_1
26
OUT2A_2
27
PGND2A
28
BST2A
29
VDR2
30
AGND
31
VCC_5
32
VDR1
33
BST1B
34
PGND1B
35
OUT1B_1
36
OUT1B_2
37
PVDD1_1
38
PVDD1_2
39
PVDD1_3
40
OUT1A_1
41
OUT1A_2
42
PGND1A
43
BST1A
44
/RESET
45
AD
46
GND_IO
47
CLK_I
48
VDD_IO
49
[EP]
NTP-7500
2011.10.04
16
GP4L_S7LR2
SPEAKER_L
SPEAKER_R
Audio amp(NTP-7500)
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.
R1613
10K
COMP2
R1630
12K
COMP2
R1614
1K
COMP2
SC1_G+/COMP1_Y+
COMP2_R_IN
+3.3V_Normal
R1607
470K
COMP2
JK1601
PPJ239-01
COMP2
5J
[GN2]O-SPRING
6J
[GN2]E-LUG
4J
[GN2]CONTACT
7K
[BL2]E-LUG-S
5K
[BL2]O-SPRING
7L
[RD2]E-LUG-S
5L
[RD2]O-SPRING_1
5M
[WH2]O-SPRING
4N
[RD2]CONTACT
5N
[RD2]O-SPRING_2
6N
[RD2]E-LUG
6D
[GN1]E-LUG
5D
[GN1]O-SPRING
4D
[GN1]CONTACT
7E
[BL1]E-LUG-S
5E
[BL1]O-SPRING
7F
[RD1]E-LUG-S
5F
[RD1]O-SPRING_1
4F
[RD1]CONTACT_1
5G
[WH1]O-SPRING
4H
[RD1]CONTACT_2
5H
[RD1]O-SPRING_2
6H
[RD1]E-LUG
SC1_B+/COMP1_Pb+
R1626
470K
R1621
75
C1646
0.1uF
16V
R1604
75
COMP2
COMP2_Y+/AV_CVBS_IN
R1666
1K
R1619
75
COMP2_Pr+
COMP2_Pb+
R1608
75
COMP2
SC1/COMP1_R_IN
+3.3V_Normal
COMP2_DET
R1660
10K
SC1_R+/COMP1_Pr+
C1617
1000pF
50V
OPT
SC1/COMP1_DET
+3.3V_Normal
R1617
10K
COMP2
C1616
1000pF
50V
OPT
R1632
10K
C1611
1000pF
50V
OPT
AV_CVBS_DET
R1618
10K
COMP2
R1620
75
R1606
470K
COMP2
R1612
10K
R1625
470K
R1633
10K
R1605
75
COMP2
SC1/COMP1_L_IN
R1615
1K
R1636
12K
R1634
12K
C1612
1000pF
50V
OPT
COMP2_L_IN
R1631
12K
COMP2
JK1602
PPJ234-02
COMP1
5A
[GN]O-SPRING
6A
[GN]E-LUG
4A
[GN]CONTACT
7B
[BL]E-LUG-S
5B
[BL]O-SPRING
7C
[RD]E-LUG-S
5C
[RD]O-SPRING_1
4C
[RD]CONTACT_1
5D
[WH]O-SPRING
4E
[RD]CONTACT_2
5E
[RD]O-SPRING_2
6E
[RD]E-LUG
C1624
47pF
50V
COMP1_ADC_FILTER
C1628
47pF
50V
COMP2_ADC_FILTER
C1620
47pF
50V
COMP1_ADC_FILTER
C1622
47pF
50V
COMP1_ADC_FILTER
C1629
47pF
50V
COMP2_ADC_FILTER
C1627
47pF
50V
COMP2_ADC_FILTER
C1625
47pF
50V
COMP1_ADC_FILTER
C1631
47pF
50V
COMP2_ADC_FILTER
C1623
47pF
50V
COMP1_ADC_FILTER
C1621
47pF
50V
COMP1_ADC_FILTER
C1630
47pF
50V
COMP2_ADC_FILTER
L1601
CM2012FR10KT 
COMP1_ADC_FILTER_L
L1602
CM2012FR10KT 
COMP1_ADC_FILTER_L
L1603
CM2012FR10KT 
COMP1_ADC_FILTER_L
L1604
CM2012FR10KT 
COMP2_ADC_FILTER_L
L1605
CM2012FR10KT 
COMP2_ADC_FILTER_L
L1606
CM2012FR10KT 
COMP2_ADC_FILTER_L
C1626
47pF
50V
COMP2_ADC_FILTER
L1601-*1
0
COMP1_NON_ADC_FILTER
L1602-*1
0
COMP1_NON_ADC_FILTER
L1603-*1
0
COMP1_NON_ADC_FILTER
L1604-*1
0
COMP2_NON_ADC_FILTER
L1605-*1
0
COMP2_NON_ADC_FILTER
L1606-*1
0
COMP2_NON_ADC_FILTER
D1604
20V
OPT
D1605
20V
OPT
D1606
20V
OPT
D1612
20V
OPT
D1614
20V
OPT
D1615
20V
OPT
D1607
5.6V
OPT
D1609
5.6V
OPT
D1611
5.6V
OPT
D1613
5.6V
OPT
D1616
5.6V
OPT
D1617
5.6V
OPT
D1624
5.6V
OPT
REAR_NON_EU_L
2011.11.02
17
GP4L_S7LR2
COMPONENT1
&
AV
COMPONENT2
COMPONENT1 & AV(COMMON), COMPONENT2
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.
ETHERNET
2011/06/14
21
GP4L_S7LR2
JK2100
XRJV-01V-0-D12-080
ETHERNET_XMULTIPLE
1
2
3
4
5
6
7
8
9
9
EPHY_RP
JK2100-*1
BS-R430051
ETHERNET_UDE
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
EPHY_RN
+2.5V_Normal
EPHY_TN
EPHY_TP
L3707
BLM18PG121SN1D
ETHERNET
C2104
0.01uF
50V
ETHERNET
D2103
5.5V
ADLC 5S 02 015 
OPT
D2104
5.5V
ADLC 5S 02 015 
OPT
D2105
5.5V
ADLC 5S 02 015 
OPT
D2101
5.5V
ADLC 5S 02 015 
OPT
ETHERNET
* H/W option : ETHERNET

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