Read LG 42LP860H (CHASSIS:LD33B) Service Manual online
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.
C2432
0.01uF
50V
Q2406
MMBT3904(NXP)
MMBT3904(NXP)
E
B
C
L2408
BLM18SG121TN1D
Q2407
AO3407A
G
D
S
C2440
1uF
25V
1uF
25V
OPT
C2433
0.1uF
50V
0.1uF
50V
PANEL_CTL
+12V
PANEL_VCC
C2443
0.1uF
50V
0.1uF
50V
R2437
10K
10K
C2435
4.7uF
4.7uF
50V
R2460
10K
R2451
2K
2K
1/8W
PANEL_DISCHARGE_REG
R2452
2K
2K
1/8W
PANEL_DISCHARGE_REG
R2442
33K
33K
R2441
5.6K
5.6K
POWER_ON/OFF2_2
JP2418
JP2421
POWER_ON/OFF1
POWER_ON/OFF2_4
JP2420
POWER_ON/OFF2_1
POWER_ON/OFF2_3
JP2419
R2459
33
33
L/DIM_OUT
R2465
4.7K
L/DIM_OUT
R2466
33
33
L/DIM_OUT
C2413
0.1uF
0.1uF
50V
+3.5V_ST
R2425
100
100
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
PWM_DIM1
L/DIM0_VS_PWR
L2402
CIS21J121
SS_OLD
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
+12V
L/DIM0_VS_PWR
INV_CTL
L/DIM0_SCLK
L2401
CIS21J121
SS_OLD
L/DIM0_SCLK_PWR
PWM_DIM2
R2426
10K
+24V
R2458
33
33
L/DIM_OUT
L/DIM0_VS
L/DIM0_SCLK_PWR
C2401
0.1uF
0.1uF
50V
C2406
0.1uF
16V
0.1uF
16V
L/DIM0_MOSI
L/DIM0_MOSI_PWR
L/DIM0_MOSI_PWR
L2403
CIS21J121
SS_OLD
R2420
1K
OPT
+3.3V_NORMAL
R2417
100K
100K
R2411
1.5K
1%
1.5K
1%
PD_24V
C2411
0.1uF
16V
0.1uF
16V
POWER_DET
C2410
0.1uF
16V
0.1uF
16V
OPT
+3.5V_ST
IC2402
NCP803SN293
Onsemi_OLD
1
GND
3
VCC
2
RESET
C2412
0.1uF
16V
0.1uF
16V
+3.5V_ST
R2421
10K
10K
OPT
R2409
1.2K
1%
1%
PD_12V
R2412
8.2K
1%
8.2K
1%
PD_24V
R2418
100
100
OPT
+24V
R2419
100
100
IC2401
NCP803SN293
OPT
1
GND
3
VCC
2
RESET
+12V
R2429
0
5%
0
5%
PD_3.5V
R2416
100K
100K
OPT
R2413
0
5%
0
5%
OPT
+3.5V_ST
R2410
2.7K
1%
2.7K
1%
PD_12V
R2439
10K
1%
C2430
22uF
10V
22uF
10V
+12V
C2416
100pF
50V
R2415
56K
1%
C2428
3300pF
50V
3300pF
50V
IC2404
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
L2407
BLM18PG121SN1D
C2417
1uF
10V
1uF
10V
+5V_NORMAL
C2429
0.1uF
16V
16V
R2435
10K
L2409
3.6uH
3.6uH
NR8040T3R6N
C2415
10uF
16V
10uF
16V
POWER_ON/OFF2_3
C24001
0.1uF
16V
0.1uF
16V
+1.2V_MTK_CORE
C2404
0.1uF
16V
C2402
10uF
16V
L2400
BLM18PG121SN1D
R2406
10K
1%
C2409
10uF
10V
R24000
OPT
C2407
10uF
10V
IC2400
AOZ1038PI
3
AGND
2
VIN
4
FB
1
PGND
5
COMP
6
EN
7
NC_1
8
NC_2
9
[EP]LX
+12V
POWER_ON/OFF1
C2441
3300pF
50V
OPT
C2403
0.1uF
16V
OPT
C2400
10uF
16V
R2403
10K
R2402
3.3K
C2408
10uF
10V
L2404
2uH
R2404
5.6K
1%
C2405
4700pF
50V
C2414
10uF
10V
C2421
4700pF
50V
L2405
BLM18PG121SN1D
C2418
10uF
10V
10uF
10V
IC2403
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]
C2425
10uF
10uF
10V
C2427
0.1uF
16V
0.1uF
16V
R2432
330K
1/16W
5%
R2430
10K
+3.5V_ST
R2431
15K
15K
1/16W
5%
C2422
0.01uF
50V
C2447
10uF
10uF
10V
C2446
10uF
10uF
10V
C2424
10uF
10uF
10V
C2448
10uF
10V
10uF
10V
R2433
56K
56K
1/16W
1%
+1.5V_DDR
L2406
3.6uH
3.6uH
NR8040T3R6N
C2423
0.1uF
16V
C2426
100pF
50V
100pF
50V
POWER_ON/OFF2_1
R2434
47K
1%
C2420
0.1uF
16V
C2419
0.1uF
16V
0.1uF
16V
L2410
BLM18PG121SN1D
R2414
10K
C2442
22uF
10V
22uF
10V
C2439
3300pF
50V
C2431
10uF
16V
16V
R2428
10K
10K
1%
+12V
ZD2400
+3.3V_NORMAL
C2434
0.1uF
50V
0.1uF
50V
L2411
2uH
R2407
100K
C2444
22uF
10V
10V
R2427
33K
1%
C2445
22pF
50V
22pF
50V
C2437
0.1uF
0.1uF
C2438
1uF
10V
10V
POWER_ON/OFF2_2
IC2405
TPS54425PWPR
3
VREG5
2
VFB
4
SS
1
VO
6
PG
5
GND
7
EN
8
PGND1
9
PGND2
10
SW1
11
SW2
12
VBST
13
VIN1
14
VIN2
15
[EP]PGND
+3.3V_NORMAL
RL_ON
R2401
10K
R2461
10K
OPT
+3.5V_ST
R2408
10K
Q2401
MMBT3906(NXP)
1
2
3
R2453
10K
OPT
+3.5V_ST
Q2402
MMBT3904(NXP)
MMBT3904(NXP)
OPT
E
B
C
R2464
4.7K
OPT
L2401-*2
MLB-201209-0120P-N2
MAG_NEW
L2401-*1
UBW2012-121F
SHENCHEN_NEW
L2402-*2
MLB-201209-0120P-N2
MAG_NEW
L2402-*1
UBW2012-121F
SHENCHEN_NEW
L2403-*2
MLB-201209-0120P-N2
MAG_NEW
L2403-*1
UBW2012-121F
SHENCHEN_NEW
IC2401-*1
APX803D29
Diodes_NEW
1
GND
3
VCC
2
RESET
IC2402-*1
APX803D29
Diodes_NEW
1
GND
3
VCC
2
RESET
24
MID_POWER
2012.12.10
TYP 1450mA
PANEL_POWER
xxLP860H-ZA
POWER TP POINT
JIG POINT for GND
FROM LIPS & POWER B/D
LOCAL DIMMING
ST_3.5V-->3.5V
not to RESET at 8kV ESD
12V-->3.58V
Power_DET(12V)
24V-->3.48V
3A
R1
+5V_Normal
R2
MTK CORE 1.2V
R2
*NOTE 17
Placed on SMD-TOP
R1
Vout=0.8*(1+R1/R2)
$ 0.145
3A
3A
Vout=0.827*(1+R1/R2)=1.521V
R1
R2
DDR MAIN 1.5V
Vout=(0.763+0.0017*Vout.set)*(1+R1/R2)
R2
R1
MAX 3.4 A
+3.3V_NORMAL
4A
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