LG 42GA6400-UD Service Manual page 26
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Also See for 42GA6400-UD:
- Owner's manual (56 pages) ,
- Owner's manual (56 pages) ,
- Owner's manual (44 pages)
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+3.5V_ST
R2305
RL_ON
10K
P2301
SMAW200-H24S2
POWER_18P
+3.5V_ST
L2303
PWR ON
INV ON
BLM18SG121TN1D
1
1
2
2
3.5V
PDIM#1
3
3
4
4
3.5V
PDIM#2
C2307
5
5
6
6
0.1uF
GND
GND
7
7
8
8
16V
24V
24V
9
9
10
10
GND
GND
11
11
12
12
12V
12V
13
13
14
14
+12V
12V
24V
15
15
16
16
GND
GND
17
17
18
18
CIS21J121
GND
GND
19
20
GND
L/DIMO_VS
C2306
L2302
21
22
19
L/DIM0_MOSI
L/DIM0_SCLK
0.1uF
23
24
50V
POWER_24P
25
SMAW200-H18S1
P2300
G3S
R2367
33
L/DIM0_MOSI
eMMC POWER
+3.3V_NORMAL
3.3V_EMMC
+1.8V_NORMAL
EMMC_VCCQ
L2319
L2306
BLM18PG121SN1D
BLM18PG121SN1D
C2376
C2371
C2372
22uF
0.1uF
0.1uF
10V
16V
16V
SAMSUNG_eMMC
1
+1.8V
IC2300
+3.5V_ST
AP7173-SPG-13 HF(DIODES)
[EP]
L2301
BLM18PG121SN1D
IN
OUT
1
8
PG
FB
1/16W
2
7
C2301
4.7uF
10V
VCC
SS
3
6
R2314
3K
R2300
1%
10K
EN
GND
4
5
C2308
R2315
POWER_ON/OFF1
1.5A
2200pF
100
1%
50V
Vout=0.8*(1+R1/R2)
2
+3.3V_NORMAL
+12V
L2304
L2300
IC2301
2uH
BD86106EFJ
BLM18PG121SN1D
[EP]
PGND
SW_2
1
8
C2312
C2314
Placed on SMD-TOP
10uF
10uF
VIN
SW_1
2
7
10V
10V
C2311
AGND
EN
0.0068uF
3
6
C2300
C2304
C2309
R2302
50V
10uF
10uF
0.1uF
6.8K
FB
6A
COMP
16V
16V
16V
4
5
OPT
R2303
POWER_ON/OFF2_1
10K
C2310
0.1uF
16V
Vout=0.8*(1+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.
Copyright ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
+12V
+3.3V_NORMAL
R2330
1K
R2312
INV_CTL
100
PWM_DIM
PWM_DIM2
+24V
L2305
CIS21J121
C2317
G3S
0.1uF
R2368
50V
33
L/DIM0_VS
L/DIM0_SCLK
G3S
R2369
33
1
+12V
L2310
BLM18PG121SN1D
C2322
10uF
16V
+3.3V_TU_IN
+3.3V_TU
L2314
BLM18PG121SN1D
Switching freq: 700K
3. soft start
293 mA
+1.8V_NORMAL
+3.3V_NORMAL
R1
1%
C2313
C2315
3.9K
0.1uF
10uF
+5V_NORMAL
R2321
16V
10V
R2
R2334
10K
POWER_ON/OFF2_2
DDR MAIN 1.5V
4
MAX
4.7 A
+3.5V_ST
+3.3V_NORMAL
L2308
C2316
C2323
C2351
10uF
10uF
47pF
10V
10V
50V
OPT
C2320
10uF
R1
10V
R2
Vout=0.827*(1+R1/R2)=1.521V
PANEL_POWER
L2311
CIS21J121
C2328
C2326
0.1uF
0.01uF
50V
50V
Q2305
AO3407A
C2332
C2335
10uF
0.1uF
G
16V
50V
OPT
C
B
Q2304
PANEL_CTL
MMBT3904(NXP)
R2341
10K
E
+5V_Normal
MAX 1A
R2301
POWER_ON/OFF1
10K
IC2304
TPS54327DDAR
[EP]GND
POWER_ON/OFF2_1
OPT
R2348
10K
EN
VIN
1
8
R1
1%
VFB
VBST
C2345
2
7
R2308
0.1uF
L2313
16V
6.8uH
56K
VREG5
SW
3
6
C2334
100pF
NR8040T4R7N
50V
SS
GND
3A
4
5
R2311
R2
10K
C2336
C2342
1uF
2200pF
1%
10V
50V
Vout=0.765*(1+R1/R2)
+2.5V
IC2303
AP7173-SPG-13 HF(DIODES)
700 mA
[EP]
IN
OUT
1
8
PG
FB
2
7
R2347
R1
4.3K
VCC
SS
3
6
1%
1.5A
C2324
10uF
EN
GND
C2331
10V
4
5
R2346
2200pF
2K
1%
50V
R2
Vout=0.8*(1+R1/R2)
1074 mA
POWER_ON/OFF2_3
C2325
0.1uF
C2327
16V
+1.5V_DDR
0.1uF
16V
L2312
3.6uH
VIN_1
PH_3
1
12
THERMAL
NR8040T3R6N
VIN_2
PH_2
2
17
11
C2333
C2337
GND_1
PH_1
3
IC2302
10
22uF
22uF
TPS54319TRE
C2329
10V
10V
GND_2
SS/TR
4
3A
9
0.01uF
C2338
50V
100pF
R1
50V
R2342
1/16W
330K
5%
C2330
R2340
4700pF
15K
1/16W 5%
50V
R2
R2350
56K
1/16W
3A
1%
$ 0.145
Power_DET
+12V
TYP 1450mA
PD_+12V
R2362
PANEL_VCC
2.7K
1%
PD_+12V
R2363
1.2K
1%
C2346
0.1uF
50V
+5V_NORMAL
4
+12V
L2307
IC2306
BLM18PG121SN1D
BD86106EFJ
PGND
1
Placed on SMD-TOP
VIN
2
AGND
3
C2303
C2305
C2318
10uF
10uF
0.1uF
16V
16V
16V
FB
6A
4
OPT
C2343
22uF
10V
Vout=0.8*(1+R1/R2)
+2.5V_NORMAL
4
C2340
C2344
10uF
0.1uF
10V
16V
+12V
R2377
RT/CLK
100K
1/16W
L2315
5%
GND_1
GND_2
+0.9V_VDD
PVIN_1
C2347
10uF
PVIN_2
16V
C2375
180pF
50V
R1
FRC3
VSENSE
C2302
R2
C2341
4.7uF
0.1uF
16V
16V
FRC3
URSA5
URSA5
Vout=0.6*(1+R1/R2)
+3.5V_ST
R2373
+3.5V_ST
100K
PD_+3.5V
R2376
R2366
IC2307
0
10K
5%
NCP803SN293
OPT
POWER_DET
VCC
RESET
3
2
1
C2359
0.1uF
GND
16V
C2365
0.1uF
16V
PD_24V
+24V
R2372
100K
not to RESET at 8kV ESD
PD_24V
IC2308
PD_24V
R2364
NCP803SN293
8.2K
1%
VCC
RESET
3
2
1
24V-->3.48V
PD_24V
C2360
R2365
GND
0.1uF
12V-->3.58V
1.5K
16V
ST_3.5V-->3.5V
1%
PD_24V
+1.0V_VDD
LG1152 Max: 1728 mA
LG1132 Max: 2000 mA
+1.0V_VDD
L2309
2uH
[EP]
SW_2
8
C2352
C2353
C2354
C2355
C2356
SW_1
10uF
10uF
10uF
10uF
47pF
7
10V
10V
10V
10V
50V
OPT
C2321
EN
6
0.0068uF
R2309
50V
6.8K
COMP
5
R2310
C2319
10K
POWER_ON/OFF2_3
0.1uF
16V
IC2305
EAN62348501
[EP]GND
Max 5926 mA
PWRGD
1
14
+0.9V_VDD
C2349
BOOT
2
13
0.1uF
L2317
16V
PH_2
3
12
1uH
OPT
PH_1
C2350
C2363
C2370
4
11
22uF
22uF
10uF
10V
10V
10V
EN
5
10
VIN
SS/TR
6
9
COMP
R2357
1K
7
8
POWER_ON/OFF2_3
Switching freq: 400 ~ 580 Khz
LG1152
POWER
LGE Internal Use Only
R1
R2
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