LG 42LN57XX / 42LN570S / 42LN570V / 42LN5758 / 42LN575S / 42LN575V / 42LN5778 / 42LN577S / 42LN577V (CHASSIS:LD33B) 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.
C611
100pF
50V
100pF
50V
EU
R605
75
1%
75
1%
EU
C614
0.01uF
EU
SC_ID_SOC
C604
10pF
10pF
EU
R607
75
1%
75
1%
EU
R629
100K
100K
EU
SCART_Lout
R637
0
1/16W
EU
R626
30K
EU
C610
100pF
50V
100pF
50V
EU
C608
10uF
16V
10uF
16V
EU
R631
100K
100K
EU
C612
0.01uF
EU
R623
100
EU
C607
100pF
100pF
EU
R614
0
0
1/16W
5%
5%
EU
R610
51K
51K
1/16W
1%
1%
EU
SC_R_SOC
SC_CVBS_IN
R601
470K
OPT
SC_B_SOC
SC_FB
SC_R_IN
C603
330pF
50V
330pF
50V
OPT
C605
10pF
EU
R609
22
EU
SC_L_IN_SOC
R608
75
1%
75
1%
EU
R604
75
1%
75
1%
EU
C600
220pF
220pF
OPT
TP600
SC_FB_SOC
C615
0.01uF
EU
SCART_Rout
C601
10pF
10pF
OPT
C616
0.047uF
EU
R600
EU
0
C609
10uF
16V
10uF
16V
EU
SCART_Rout_SOC
R617
100
EU
C613
0.01uF
EU
SC_CVBS_IN_IF
R622
100
EU
SC_L_IN
SC_CVBS_IN_IF
SCART_Lout_SOC
R602
470K
470K
OPT
SC_CVBS_IN_SOC
SC_B
DTV/MNT_V_OUT
SC_G
SC_COM_SOC
L611
EU
120-ohm
R606
75
1%
75
1%
EU
R625
30K
EU
R613
10K
EU
C602
330pF
50V
330pF
50V
OPT
TU_CVBS
C606
10pF
EU
R624
0
0
1/16W
5%
5%
EU
DTV/MNT_V_OUT_SOC
R620
100
EU
SC_R_IN_SOC
SC_ID
R621
100
EU
SC_G_SOC
SC_R
R616
75
1%
1%
EU
R615
75
1%
1%
OPT
R618
15K EU
15K EU
R619
15K EU
15K EU
SCART_AMP_L_FB
SCART_AMP_R_FB
R635
10K
EU
R636
10K
EU
C619
330pF
50V
330pF
50V
EU
C618
330pF
50V
330pF
50V
EU
+3.3V_NORMAL
+3.3V_NORMAL
C620
1uF
EU
C621
1uF
EU
C617
100pF
100pF
EU
R628
68K
68K
EU
R630
68K
68K
EU
2011.12.30
11
MID_MAIN_SCART
Close to Main Chip
PLACE AT JACK SIDE
Close to SOC
PLACE AT MAIN SOC SIDE
READY FOR FILTER (EMI)
1608 size For EMI
Close to JACK
PLACE AT IC6000
1608 size For EMI
READY FOR FILTER (EMI)
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.
CI_MDI[3]
CI_A_DATA[1]
CI_A_DATA[6]
CI_MDI[0]
CI_MDI[0]
MT5398_TS_OUT[5]
CI_MDI[1]
CI_A_ADDR[1]
CI_A_DATA[5]
CI_MDI[4]
CI_TS_DATA[7]
CI_TS_DATA[0]
MT5398_TS_IN[7]
CI_ADDR[14]
CI_DATA[7]
MT5398_TS_OUT[4]
CI_A_DATA[7]
CI_ADDR[7]
CI_TS_DATA[6]
CI_A_ADDR[13]
CI_A_ADDR[8]
CI_A_ADDR[11]
MT5398_TS_IN[3]
CI_DATA[2]
CI_A_ADDR[10]
CI_ADDR[6]
CI_DATA[4]
CI_A_ADDR[12]
CI_MDI[4]
CI_MDI[7]
CI_DATA[1]
CI_A_DATA[3]
CI_A_DATA[5]
CI_A_ADDR[4]
CI_TS_DATA[3]
CI_DATA[5]
CI_ADDR[4]
CI_A_DATA[2]
CI_A_DATA[6]
CI_ADDR[12]
CI_A_DATA[0]
CI_ADDR[13]
CI_MDI[7]
MT5398_TS_IN[6]
CI_MDI[6]
CI_MDI[2]
CI_A_ADDR[9]
CI_TS_DATA[4]
CI_A_DATA[3]
CI_A_DATA[7]
MT5398_TS_OUT[0]
CI_ADDR[9]
MT5398_TS_IN[2]
CI_ADDR[0]
CI_MDI[3]
CI_A_ADDR[3]
CI_A_ADDR[7]
CI_A_ADDR[14]
CI_DATA[3]
CI_A_DATA[4]
CI_MDI[6]
CI_MDI[1]
CI_TS_DATA[5]
CI_ADDR[10]
CI_MDI[2]
CI_A_DATA[4]
MT5398_TS_IN[0]
CI_A_ADDR[2]
CI_A_DATA[0]
CI_DATA[6]
CI_A_ADDR[5]
CI_DATA[0]
CI_A_ADDR[0]
CI_MDI[5]
CI_ADDR[8]
CI_A_ADDR[6]
CI_A_DATA[2]
MT5398_TS_OUT[7]
CI_ADDR[3]
MT5398_TS_IN[5]
CI_TS_DATA[2]
CI_MDI[5]
CI_ADDR[11]
MT5398_TS_OUT[6]
CI_ADDR[2]
MT5398_TS_IN[4]
MT5398_TS_IN[1]
MT5398_TS_OUT[2]
MT5398_TS_OUT[3]
MT5398_TS_OUT[1]
CI_A_DATA[1]
CI_TS_DATA[1]
CI_ADDR[1]
CI_ADDR[5]
/PCM_IORD
R924
10K
OPT
AR908
0
CI
/CI_CD2
PCM_RST
/PCM_IRQA
CI_IN_TS_VAL
AR905
0
CI
R939
22
CI
CI_IN_TS_VAL
/PCM_CE1
CI_A_ADDR[10]
R934
10K
OPT
OPT
CI_TS_CLK
/PCM_REG
R935
10K
CI
R937
10K
OPT
+5V_CI_ON
CI_TS_DATA[0-7]
/PCM_REG
PCM_INPACK
CI_A_DATA[0-7]
+5V_CI_ON
CI_A_ADDR[12]
R933
10K
10K
OPT
CI_A_ADDR[8]
CI_IN_TS_CLK
CI_A_ADDR[14]
R915
47
CI
+3.3V_NORMAL
R914
10K
10K
CI
R910
10K
CI
CI_TS_CLK
C904
0.1uF
CI
CI_A_ADDR[5]
R916
47
CI
R926
0
OPT
R931
22
OPT
/PCM_CE1
R907
47 CI
R940
22 CI
CI_VS1
C902
12pF
50V
12pF
50V
OPT
R922
22
CI
/PCM_CE2
R936
10K
CI
CI_DATA[0-7]
CI_VS1
CI_A_VS1
CI_VS1
CI_A_ADDR[13]
CI_IN_TS_SYNC
R918
47K
CI
R927
100
CI
CI_A_ADDR[3]
/PCM_OE
R900
10K
OPT
C900
12pF
50V
12pF
50V
OPT
C907
0.1uF
16V
CI
MT5398_TS_OUT[0-7]
CI_TS_DATA[2]
R911
22
/PCM_WAIT
R913
47K
CI
+5V_CI_ON
CI_A_ADDR[9]
R929
10K
CI
R917
47
CI
CI_TS_SYNC
PCM_INPACK
R925
0
/PCM_WE
R909
47 CI
MT5398_MISTRT
CI_IN_TS_CLK
/PCM_WE
CI_TS_DATA[5]
MT5398_TS_CLK
PCM_RST
/PCM_CE2
/CI_CD1
/PCM_IOWR
CI_ADDR[0-14]
AR900
47
CI
/PCM_IOWR
CI_TS_DATA[0]
/CI_CD1
R938
0
OPT
/PCM_IRQA
CI_A_ADDR[2]
AR909
0
CI
AR902
47
CI
R921
22
CI
CI_MDI[0-7]
R908
47 CI
CI_TS_DATA[6]
AR907
0
CI
/PCM_IORD
MT5398_TS_IN[0-7]
CI_IN_TS_SYNC
MT5398_MCLKI
CI_TS_VAL
CI_A_ADDR[1]
/PCM_A_REG
R930
47K
CI
AR901
47
CI
CI_MDI[0-7]
C905
10uF
10V
10uF
10V
CI
CI_TS_SYNC
CI_A_ADDR[11]
CI_A_DATA[0-7]
CI_A_ADDR[7]
R906
10K
OPT
R923
10K
10K
OPT
R941
22
CI_A_ADDR[0]
/CI_CD2
R920
22 OPT
CI_TS_VAL
AR904
0
CI
AR903
47
CI
CI_TS_DATA[7]
AR906
0
CI
R932
22
OPT
CI_A_ADDR[6]
MT5398_TS_SYNC
/PCM_OE
CI_TS_DATA[3]
R928
100
CI
+3.3V_NORMAL
MT5398_TS_VAL
/PCM_A_REG
/PCM_WAIT
CI_TS_DATA[1]
R919
47K
CI
CI_A_ADDR[4]
C906
0.1uF
CI
CI_TS_DATA[4]
CI_A_ADDR[0-14]
R912
22
MT5398_MIVAL_ERR
R942
22
JK900
10120698-015LF
G1
G2
57
21
52
16
10
47
41
5
36
59
23
45
54
18
49
43
13
7
38
2
25
56
20
51
15
9
46
40
4
35
58
22
53
17
11
48
42
12
6
37
1
24
55
19
50
44
14
8
39
3
26
60
27
61
28
62
29
63
30
64
31
32
33
34
65
66
67
68
69
13
2011.11.21
MID_MAIN_CI
Close to CI Slot
Close to MT5369
Close to MT5369
Close to MT5398
CI TS INPUT
CI DETECT
Close to CI Slot
CI TS OUTPUT
Close to CI Slot
THERMAL
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.
+5V_NORMAL
L2409
BLM18PG121SN1D
C2430
10uF
16V
C2413
0.1uF
0.1uF
50V
+12V
C2450
0.01uF
50V
POWER_ON/OFF2_3
C2406
0.1uF
16V
0.1uF
16V
+24V
C2418
10uF
10V
10uF
10V
R2403
10K
IC2401
NCP803SN293
P_DET_BOTH_12_3.5V
1
GND
3
VCC
2
RESET
+1.5V_DDR
+3.5V_ST
POWER_ON/OFF2_3
C2424
150pF
50V
150pF
50V
R2452
2K
1/8W
OPT
C2404
0.1uF
16V
C2453
0.1uF
16V
0.1uF
16V
C2420
0.1uF
16V
R2408
10K
POWER_ON/OFF2_1
POWER_ON/OFF2_2
R2419
100
100
R2455
47K
1%
Q2407
AO3407A
G
D
S
PANEL_VCC
C2454
10uF
10uF
10V
+3.5V_ST
+3.3V_NORMAL
C2411
0.1uF
16V
0.1uF
16V
L2402
CIS21J121
C2435
4.7uF
4.7uF
50V
PWM_DIM1
R2432
330K
1/16W
5%
+24V
R2410
2.7K
1%
2.7K
1%
P_DET_ONLY_12V
PWM_DIM2
C2447
10uF
10uF
10V
C2455
0.1uF
16V
POWER_ON/OFF1
R2438
51K
1%
R2411
1.5K
1%
1.5K
1%
P_DET_BOTH_24_3.5V
R2453
10K
C2410
0.1uF
50V
0.1uF
50V
P_DET_BOTH_12_3.5V
C2451
10uF
10uF
10V
C2429
0.1uF
16V
L2407
4.7uH
4.7uH
C2408
10uF
10V
C2433
0.1uF
50V
0.1uF
50V
C2443
0.1uF
50V
0.1uF
50V
C2407
10uF
10V
L2406
BLM18PG121SN1D
RL_ON
C2401
0.1uF
0.1uF
50V
C2403
0.1uF
16V
OPT
Q2401
MMBT3906(NXP)
1
2
3
C2412
0.1uF
16V
0.1uF
16V
L2408
BLM18SG121TN1D
R2416
100K
100K
P_DET_BOTH_12_3.5V
R2431
15K
15K
1/16W
5%
+3.5V_ST
C2440
1uF
25V
OPT
25V
OPT
+24V
C2442
10uF
10V
R2418
100
100
P_DET_BOTH_12_3.5V
R2451
2K
1/8W
OPT
C2438
10uF
10V
PANEL_CTL
+3.5V_ST
PANEL_VCC
R2406
10K
1%
C2448
10uF
10V
10uF
10V
R2409
1.2K
1%
1%
P_DET_ONLY_12V
R2417
100K
100K
L2400
BLM18PG121SN1D
R2421
10K
10K
OPT
+12V
L2405
BLM18PG121SN1D
C2431
10uF
16V
C2439
10uF
10V
Q2406
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
C2422
0.1uF
50V
C2441
47pF
50V
OPT
R2402
6.8K
POWER_ON/OFF2_2
C2436
0.1uF
16V
+12V
C2402
10uF
16V
+3.5V_ST
C2419
0.1uF
16V
0.1uF
16V
+1.2V_MTK_CORE
R2401
10K
L2404
2uH
C2400
10uF
16V
R2436
16K
1%
R2433
56K
56K
1/16W
1%
C2432
0.01uF
50V
C2434
0.1uF
16V
OPT
C2428
10uF
10V
10uF
10V
C2414
10uF
10V
R2430
10K
R2437
10K
10K
R2427
30K
1%
C2444
10uF
10V
C2456
10uF
10uF
10V
R2428
10K
1%
POWER_DET
R2412
8.2K
8.2K
P_DET_BOTH_24_3.5V
L2401
CIS21J121
C2409
10uF
10V
R2439
10K
R2454
0
0
1/16W
5%
5%
OPT
VDD3V3_HDMI
C2427
0.1uF
0.1uF
16V
+3.3V_NORMAL
POWER_ON/OFF2_4
D2401
40V
B540C
C2423
0.01uF
50V
0.01uF
50V
+12V
L2403
CIS21J121
C2421
4700pF
50V
IC2402
NCP803SN293
1
GND
3
VCC
2
RESET
R2414
10K
POWER_ON/OFF1
+12V
C2457
0.1uF
16V
0.1uF
16V
R2413
0
5%
0
5%
P_DET_BOTH_24_3.5V
C2452
100pF
50V
100pF
50V
POWER_ON/OFF2_1
R2404
5.1K
1%
R2400
0
0
P_DET_BOTH_12_3.5V
+3.5V_ST
P2401
SMAW200-H18S1
POWER_18P
14
12V
9
24V
4
PDIM#1
18
GND
13
12V
8
GND
3
3.5V
17
GND
12
GND
7
GND
2
INV ON
16
24V
11
GND
6
PDIM#2
1
PWR ON
15
12V
10
24V
5
3.5V
19
+3.3V_NORMAL
R2425
100
100
INV_CTL
R2426
1K
1K
L2411
2.2uH
2.2uH
NR5040T2R2N
IC2403
TPS54319TRE
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]
C2417
10uF
35V
10uF
35V
IC2404
RT8289GSP
3
NC_2
2
NC_1
4
FB
1
BOOT
5
EN
6
GND
7
VIN
8
SW
9
[EP]GND
IC2400
BD86106EFJ
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
SW_1
8
SW_2
9
[EP]
C2405
0.0068uF
50V
ZD2400
5V
OPT
JP2408
JP2409
JP2410
JP2411
L2410
2uH
NR8040T2R0N
IC2405
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
C2445
100pF
50V
OPT
C2415
1uF
10V
1uF
10V
C2416
3300pF
50V
3300pF
50V
C2437
0.1uF
16V
C2425
22uF
10V
22uF
10V
125C
C2426
22uF
10V
22uF
10V
125C
P2400
SMAW200-H24S2
SMAW200-H24S2
POWER_24P
19
GND
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
20
GND
15
10
5
21
GND
22
L/DIMO_VS
23
L/DIM0_MOSI
24
L/DIM0_SCLK
25
L/DIM0_VS_PWR
L/DIM0_SCLK_PWR
L/DIM0_MOSI_PWR
L/DIM0_VS
L/DIM0_SCLK
L/DIM0_MOSI
R2456
33
33
L/DIM_OUT
R2457
4.7K
L/DIM_OUT
R2458
33
33
L/DIM_OUT
R2459
33
33
L/DIM_OUT
L/DIM0_MOSI_PWR
L/DIM0_VS_PWR
L/DIM0_SCLK_PWR
ZD2401
5V
OPT
ZD2402
5V
OPT
R2410-*1
2.7K
1%
2.7K
1%
P_DET_BOTH_12_3.5V
R2409-*1
1.2K
1%
1%
P_DET_BOTH_12_3.5V
IC2401-*1
NCP803SN293
P_DET_BOTH_24_3.5V
1
GND
3
VCC
2
RESET
R2416-*1
100K
100K
P_DET_BOTH_24_3.5V
R2418-*1
100
100
P_DET_BOTH_24_3.5V
R2410-*2
2.7K
1%
2.7K
1%
P_DET_BOTH_12_24V
R2409-*2
1.2K
1%
1%
P_DET_BOTH_12_24V
R2412-*1
8.2K
8.2K
P_DET_BOTH_12_24V
R2411-*1
1.5K
1%
1.5K
1%
P_DET_BOTH_12_24V
R2416-*2
100K
100K
P_DET_BOTH_12_24V
IC2401-*2
NCP803SN293
P_DET_BOTH_12_24V
1
GND
3
VCC
2
RESET
R2418-*2
100
100
P_DET_BOTH_12_24V
C2410-*1
0.1uF
50V
0.1uF
50V
P_DET_BOTH_24_3.5V
C2410-*2
0.1uF
50V
0.1uF
50V
P_DET_BOTH_12_24V
R2442
33K
R2441
5.6K
R2440
3.3K
1/16W
1%
Q2408
NTR4501NT1G
G
D
S
24
MID_POWER
2011.11.25
HDMI LEAKAGE Workaround in MTK A2(A0) (Default= with HDMI_LEAKAGE)
R1
R1
3A
DDR MAIN 1.5V
12V-->3.58V
R2
Vout=1.222*(1+R1/R2)
R2
Vout=0.8*(1+R1/R2)
+5V_Normal
ST_3.5V-->3.5V
DDR MAIN 1.5V
Vout=0.827*(1+R1/R2)=1.521V
5A
R1
R2
R1
6A
PANEL_POWER
TYP 1450mA
FROM LPB & PSU
Placed on SMD-TOP
24V-->3.48V
MAX 3.4 A
not to RESET at 8kV ESD
Power_DET
R2
+3.3V_NORMAL
3A
Vout=0.765*(1+R1/R2)
Placed on SMD-TOP
On-semi
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