LG 55LM4600 (CHASSIS:LT21B) Service Manual ▷ View online
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.
POWER_LARGE
2011/11.22
4
GP4L_S7LR2
RL_ON
R462
10K
C439
100pF
50V
C416
0.1uF
0.1uF
16V
OPT
+3.5V_ST
R426
10K
10K
C443
10uF
10uF
25V
L407-*1
MLB-201209-0120P-N2
R430
10K
10K
+3.3V_Normal
+3.5V_ST
+24V
C453
22uF
22uF
10V
C437
22uF
16V
22uF
16V
ERROR_OUT
C403
10uF
10V
10uF
10V
R434
10K
IC407
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
C444
0.1uF
16V
0.1uF
16V
R429
47K
47K
OPT
R486
4.7K
4.7K
OPT
IC408
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
+3.5V_ST
POWER_DET
C408
0.1uF
16V
0.1uF
16V
OPT
POWER_ON/OFF_1
+3.5V_ST
R432
330K
1/16W
5%
PANEL_VCC
R428
10K
10K
IC409
NCP803SN293
PD_+12V_PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
OLP
C441
0.1uF
16V
+3.3V_Normal
L404-*1
MLB-201209-0120P-N2
R480
100
100
PD_+12V
R
4
4
2
2
7
K
1
/
1
6
W
1
%
10uF
C461
10V
L407
CIS21J121
+1.10V_VDDC
L413
C435
0.1uF
16V
NON_CI_CAP
+3.5V_ST
+12V/+15V
R461
10K
10K
OPT
+1.5V_DDR
L404
CIS21J121
+12V/+15V
+3.5V_ST
C425
0.1uF
16V
+3.3V_Normal
C407
0.1uF
16V
0.1uF
16V
OPT
C476
0.1uF
16V
R404
100K
PD_+12V
R439
33K
R419
1K
L420
BLM18PG121SN1D
C418
0.1uF
50V
C456
22uF
22uF
10V
PANEL_CTL
1:AK10
C430
10uF
10V
10uF
10V
R181
1K
1K
OPT
560pF
C467
50V
L402-*1
MLB-201209-0120P-N2
P403
FW20020-24S
NORMAL_EXPEPT_32
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
C431
0.1uF
16V
0.1uF
16V
NON_CI_CAP
R421
10K
10K
C406
0.1uF
16V
0.1uF
16V
R435
22K
22K
OPT
+3.3V_Normal
+3.5V_ST
+3.5V_ST
R406
4.7K
4.7K
L402
CIS21J121
C432
0.1uF
16V
0.1uF
16V
NON_CI_CAP
R433
10K
10K
R418
6.8K
OPT
Q409
AO3407A
G
D
S
R456
4.7K
1/16W
1%
1/16W
1%
R401
10K
R427
10K
OPT
R436
15K
15K
R431
22K
OPT
C411
0.1uF
16V
0.1uF
16V
C423
4.7uF
16V
4.7uF
16V
IC402
TJ3940S-2.5V-3L
1
GND
2
VOUT
3
VIN
C440
0.1uF
16V
0.1uF
16V
PWM_DIM
R490
10K
OPT
IC403
TPS54319TRE
1
VIN_1
3
GND_1
7
COMP
9
SS/TR
10
PH_1
11
PH_2
12
PH_3
13
BOOT
14
PWRGD
15
EN
16
VIN_3
5
AGND
8
RT/CLK
6
VSENSE
4
GND_2
2
VIN_2
17
EP[GND]
R488
100K
100K
C475
0.1uF
16V
NON_CI_CAP
R476
0
OPT
+3.3V_Normal
R475
0
0
OPT
C474
0.1uF
0.1uF
R440
5.6K
+12V/+15V
+3.5V_ST
C445
0.1uF
16V
0.1uF
16V
OPT
+24V
C404
0.1uF
16V
R412
0
OPT
+3.3V_Normal
100
R420
ERROR_OUT
INV_CTL
R180
10K
OPT
R489
10K
R446
10K
OPT
R
4
4
1
5
6
K
1
/
1
6
W
1
%
R463
10K
OPT
+2.5V_Normal
C412
0.1uF
16V
0.1uF
16V
PD_+12V
R402
100
100
R415
100
100
+3.3V_Normal
R438
22K
22K
R443
10K
10K
A_DIM
R457
4.3K
4.3K
1/16W
1%
1%
C472
22uF
10V
L415
3.6uH
NR8040T3R6N
IC408-*1
APX803D29
PWR_DET_ON_DIODES
1
GND
3
VCC
2
RESET
IC409-*1
APX803D29
PD_+12V_PWR_DET_DIODES
1
GND
3
VCC
2
RESET
C436
0.01uF
50V
0.01uF
C448
3300pF
50V
C488
3300pF
R403
1.5K
1%
POWER_+24V
R405
2.2K
2.2K
PANEL_DISCHARGE_RES_2.2K
R407
2.2K
2.2K
PANEL_DISCHARGE_RES_2.2K
R448
2.7K
1%
PD_+12V
R450
0
5%
PD_+3.5V
R473
1
R482
8.2K
1%
POWER_+24V
R405-*1
3K
PANEL_DISCHARGE_RES_3K
R407-*1
3K
PANEL_DISCHARGE_RES_3K
PWM1
R408
100
FOR 200HZ PWM_DIM2
R184
33
FOR LPB MODEL
P407
12507WR-08L
FOR LPB MODEL
1
2
3
4
5
6
7
8
9
R183
33
FOR LPB MODEL
I2C_SDA
I2C_SCL
C409
0.015uF
50V
0.015uF
50V
0.015uF
Q400
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
Q401
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
Q405
MMBT3904(NXP)
E
B
C
Q406
MMBT3904(NXP)
MMBT3904(NXP)
OPT
E
B
C
Q407
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
C447
0.33uF
16V
+12V/+15V
R608
12K
12K
R410
10K
L401
L425
BLM18PG121SN1D
+5V_Normal
C4072
100pF
100pF
OPT
C420
22uF
16V
22uF
16V
C405
10uF
25V
10uF
25V
OPT
C492
22uF
16V
22uF
16V
OPT
L406
3.6uH
IC401
AOZ1051PI
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
SS
8
NC
9
[EP]LX
R609
11K
11K
1%
R416
56K
56K
1%
+5V_USB
R423
12K
1%
C4073
0.1uF
16V
0.1uF
16V
OPT
C4074
0.1uF
16V
0.1uF
16V
OPT
C4075
10uF
25V
10uF
25V
R447
1.2K
1/16W
1%
PD_+12V
Q402
MMBT3906(NXP)
1
2
3
R610
33K
OPT
Q403
AO3407A
G
D
S
C494
2200pF
50V
2200pF
50V
C493
0.01uF
50V
0.01uF
50V
C438
0.1uF
25V
0.1uF
25V
C455
0.1uF
25V
0.1uF
25V
NON_CI_CAP
C451
0.1uF
25V
OPT
C442
10uF
25V
25V
OPT
R611
0
0
NON_PSU_T120_LGD
R606
3.9K
PWM_PULL-DOWN_3.9K
R606-*1
1K
PWM_PULL-DOWN_1K
R445
100
R447-*1
5.1K
1/16W
1%
PD_KR_42_LIPS
L412
CIS21J121
120
L403
BLM18SG700TN1D
L/DIM_SCLK
L/DIM_MOSI
R612
33
33
FOR LPB MODEL_L/DIM
R613
33
33
FOR LPB MODEL_L/DIM
R614
33
33
FOR LPB MODEL_L/DIM
R615
10K
OPT
R616
10K
OPT
R617
4.7K
FOR LPB MODEL_L/DIM
L/DIM_VS
+3.3V_Normal
R450-*1
100
1%
PD_KR_42_LIPS
R405-*2
4.7K
PANEL_DISCHARGE_RES_4.7K
R407-*2
4.7K
PANEL_DISCHARGE_RES_4.7K
P401
SMAW200-H24S2
SLIM_32~52
19
12V
14
GND
9
3.5V
4
24V
18
INV ON
13
GND
8
GND
3
24V
17
12V
12
3.5V
7
GND
2
24V
16
GND/V-sync
11
3.5V
6
GND
1
PWR ON
20
A.DIM
15
GND
10
3.5V
5
GND
21
12V
22
P.DIM1
23
GND/P.DIM2
24
Err OUT
25
P404
FM20020-24
NORMAL_32
19
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
15
10
5
21
22
23
24
25
FROM LIPS & POWER B/D
R2
+1.5V_DDR
’ERROR_OUT’ is used for
lamp(CCFL/EEFL) models.
In other words,
LED models need not use.
lamp(CCFL/EEFL) models.
In other words,
LED models need not use.
New item
Power_DET
24V-->3.78V --> 3.92V (3.79V)
12V -->3.58V --> 3.82V (3.68V)
Vd=550mV
+2.5V/+1.8V
R1
+3.3V_Normal
Vout=0.8*(1+R1/R2)=1.5319
Vout=0.827*(1+R1/R2)=1.225V
Not used :
only for small(ready)
only for small(ready)
R1
R2
$ 0.165
S7LR core 1.2V volt
ST_3.5V--> 3.375V --> 3.46V
+3.5V_ST -> 3.375V
780 mA
Max 1000mA
18.5V-->3.5V --> 3.75V (3.59V)
300 mA
1.5A
PANEL_POWER
3A
20V-->3.51V --> 3.76V (3.59V)
[To LED DRIVER]
FOR LPB Download
+5V_USB
R2
3A
R1
2000 mA
Vout=0.8*(1+R1/R2)
LOCAL DIMMING
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.
IR/CONTROL
2011/11/16
6
GP4L_S7LR2
LED_R/BUZZ
C2410
0.1uF
16V
OPT
S/T_SCL
R2402
100
100
+3.5V_ST
L2403
BLM18PG121SN1D
R2409
0
IR_OUT_US
SENSOR_SCL
R2431
47K
IR_OUT
KEY2
R2414
1.5K
OPT
C2409
18pF
50V
18pF
50V
OPT
R2410
22
IR_OUT
R2411
100
R2404
10K
1%
+3.5V_ST
IR
R2430
10K
IR_OUT_EU
C2406
1000pF
50V
11_SUB
R2416
10K
OPT
R2413
1.5K
OPT
C906
18pF
50V
18pF
50V
OPT
R2412
100
L2402
BLM18PG121SN1D
R2401
100
100
JP2411
+3.5V_ST
C2408
18pF
50V
18pF
50V
OPT
C2407
100pF
100pF
50V
C2401
0.1uF
L2404
BLM18PG121SN1D
11_SUB
L2401
BLM18PG121SN1D
SENSOR_SDA
P2402
12507WR-15L
11_SUB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
+3.5V_ST
C2402
0.1uF
S/T_SDA
C2404
1000pF
50V
R2405
10K
1%
JP2407
P2401
12507WR-10L
12_SUB
1
2
3
4
5
6
7
8
9
10
11
JP2409
LED_B/LG_LOGO
JP2408
C907
18pF
50V
18pF
50V
OPT
+3.3V_Normal
C2403
0.1uF
16V
IR_OUT
C2405
0.1uF
16V
11_SUB
KEY1
JP2410
+3.5V_ST
R2426
3.3K
Q2405
MMBT3904(NXP)
IR_OUT
E
B
C
Q2406
MMBT3904(NXP)
IR_OUT_EU
E
B
C
R2429
3.3K
IR_OUT
R2425
1K
IR_OUT_EU
LED_R/BUZZ
R2432
1.5K
1.5K
12_SUB
D2402
5.6V
AMOTECH CO., LTD.
OPT
D2401
5.6V
AMOTECH CO., LTD.
OPT
D902
5.5V
ADUC 5S 02 0R5L
OPT
D903
5.5V
ADUC 5S 02 0R5L
OPT
D2403
5.48VTO5.76V
OPT
D2404
5.48VTO5.76V
OPT
D2405
5.48VTO5.76V
OPT
P2403
12507WR-12L
OPT
1
2
3
4
5
6
7
8
9
10
11
12
13
IR/LED and control for normal models.
U
S
B
D
O
W
N
S
T
R
E
A
M
U
S
B
D
O
W
N
S
T
R
E
A
M
USB DOWN STREAM
USB DOWN STREAM
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.
10/08/13
USB_OCP_DIODE
7
GP4_S7LR2
SIDE_USB2_DM
C1452
10uF
10V
10uF
10V
C1454
10uF
10V
10uF
10V
USB_2
R1451
47
SIDE_USB2_DP
+5V_USB
R1455
4.7K
OPT
4.7K
OPT
+3.3V_Normal
JK1450
3
A
U
0
4
S
-
3
0
5
-
Z
C
-
(
L
G
)
USB_1_NORMAL
1
2
3
4
5
IC1450
AP2191DSG
EAN61849601
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
USB1_OCD
R1457
4.7K
4.7K
OPT
D1451
RCLAMP0502BA
OPT
C1450
22uF
16V
USB_2
USB2_OCD
R1453
47
USB_2
JK1451
3
A
U
0
4
S
-
3
0
5
-
Z
C
-
(
L
G
)
USB_2_NORMAL
1
2
3
4
5
IC1451
AP2191DSG
EAN61849601
USB_2
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
+5V_USB
SIDE_USB1_DM
USB1_CTL
SIDE_USB1_DP
C1455
0.1uF
0.1uF
USB_2
L1451
CIS21J121
JK1450-*1
3AU04S-345-ZC-H-LG
USB_1_32LS3500
1
2
3
4
5
R1456
10K
10K
USB_2
L1451-*1
MLB-201209-0120P-N2
120-ohm
JK1451-*1
3AU04S-345-ZC-H-LG
USB_2_32LS3500
1
2
3
4
5
USB2_CTL
+3.3V_Normal
L1450-*1
MLB-201209-0120P-N2
120-ohm
USB_2_BEAD_MAG
D1450
RCLAMP0502BA
OPT
R1454
10K
10K
C1453
0.1uF
L1450
CIS21J121
USB_2_BEAD_SS
C1451
22uF
16V
R1459
2K
1/8W
5%
OPT
R1452
2K
1/8W
5%
OPT
R1450
2K
1/8W
5%
OPT
R1458
2K
1/8W
5%
OPT
USB (SIDE)
$0.077
$0.077
USB2_DIODES
USB1_DIODES
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.
5V_HDMI_2
DDC_SDA_2
DDC_SCL_1
DDC_SDA_4
D0+_HDMI2
DDC_SDA_1
+5V_Normal
5V_DET_HDMI_2
D0-_HDMI2
5V_DET_HDMI_4
R888
2.7K
5V_HDMI_1
R806
10K
D1-_HDMI4
CEC_REMOTE_S7
5V_HDMI_4
D1-_HDMI2
R804
1.8K
R830
10K
D2+_HDMI2
R855
100
100
CK+_HDMI2
R889
2.7K
HDMI_2
R807
10K
HDMI_2
D2-_HDMI4
CK-_HDMI2
C802
0.1uF
16V
0.1uF
16V
NON_CI_CAP
DDC_SDA_4
HDMI_CEC
R895
1K
HDMI_2
D2-_HDMI2
D2-_HDMI1
HPD2
C801
0.1uF
16V
0.1uF
16V
NON_CI_CAP_HDMI_2
5V_HDMI_2
CK-_HDMI1
DDC_SDA_1
+5V_Normal
HDMI_CEC
R896
1K
DDC_SCL_4
D1-_HDMI1
CK+_HDMI4
R808
10K
HDMI_SIDE
R862
10K
HDMI_SIDE
R837
1.8K
HDMI_SIDE
DDC_SCL_2
JK801
EAG59023302
HDMI_2_Normal
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
D0-_HDMI4
HPD4
D2+_HDMI1
D1+_HDMI2
R803
1.8K
HDMI_2
R802
3.3K
+5V_Normal
DDC_SDA_2
HDMI_CEC
HPD1
JK802
EAG59023302
HDMI_1_Normal
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
HDMI_CEC
D0-_HDMI1
5V_DET_HDMI_1
D0+_HDMI1
D0+_HDMI4
CK-_HDMI4
R884
2.7K
JK803
EAG62611201
HDMI_SIDE
14
13
5
D1_GND
20
BODY_SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
DDC_SCL_1
5V_HDMI_4
DDC_SCL_2
R828
10K
HDMI_2
R885
2.7K
HDMI_2
R835
3.3K
HDMI_SIDE
D1+_HDMI1
DDC_SCL_4
C803
0.1uF
16V
0.1uF
16V
NON_CI_CAP_HDMI_SIDE
5V_HDMI_1
D1+_HDMI4
CK+_HDMI1
R897
1K
HDMI_SIDE
D2+_HDMI4
R801
3.3K
HDMI_2
R887
2.7K
HDMI_SIDE
R891
2.7K
HDMI_SIDE
Q802
MMBT3904(NXP)
E
B
C
Q801
MMBT3904(NXP)
HDMI_2
E
B
C
Q803
MMBT3904(NXP)
HDMI_SIDE
E
B
C
D821
MMBD6100
A
2
C
A
1
D822
MMBD6100
HDMI_2
A
2
C
A
1
D824
MMBD6100
HDMI_SIDE
A
2
C
A
1
D811
OPT
D801
OPT
D802
OPT
JK803-*1
51U019S-312HFN-E-R-E-LG
SIDE_HDMI_32LS3500
14
RESERVED
13
CEC
5
TMDS_DATA1_SHIELD
20
BODY_SHIELD
12
TMDS_CLK-
11
TMDS_CLK_SHIELD
2
TMDS_DATA2_SHIELD
19
HOT_PLUG_DETECT
18
VDD[+5V]
10
TMDS_CLK+
4
TMDS_DATA1+
1
TMDS_DATA2+
17
DDC/CEC_GND
9
TMDS_DATA0-
8
TMDS_DATA0_SHIELD
3
TMDS_DATA2-
16
SDA
7
TMDS_DATA0+
6
TMDS_DATA1-
15
SCL
R805
0
HDMI1_ARC
HDMI_ARC
JK801-*1
YKF45-7054V
HDMI_2_BDP_Model
14
NC
13
CEC
5
DATA1_SHIELD
20
SHIELD
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
JK802-*1
YKF45-7054V
HDMI_1_BDP_Model
14
NC
13
CEC
5
DATA1_SHIELD
20
SHIELD
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
2011.10.04
GP4L_S7LR2
HDMI
8
HDMI_2
For CEC
SIDE_HDMI
HDMI
HDMI_1
For BDP In-Packing Model
- EMI Gasket Touch Jack
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