LG 55LM8600 Service Manual page 26
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Also See for 55LM8600:
- User manual (189 pages) ,
- Service manual (113 pages) ,
- Specifications (2 pages)
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+3.5V_ST
R2305
RL_ON
10K
OPT
P2301
FW20020-24S
PWR ON
24V
1
1
2
2
24V
24V
3
3
4
4
GND
GND
5
5
6
6
L2303
+3.5V_ST
GND
GND
7
7
8
8
BLM18SG121TN1D
3.5V
3.5V
9
9
10
10
3.5V
3.5V
C2307
11
11
12
12
0.1uF
GND
GND
13
13
14
14
+12V
16V
GND
GND/V-sync
15
15
16
16
12V
INV ON
17
17
18
18
CIS21J121
12V
A.DIM
19
19
20
20
12V
P.DIM1
C2306
L2302
21
21
22
22
GND/P.DIM2
Err OUT
0.1uF
23
23
24
24
50V
25
SMAW200-H24S2
P2300
eMMC POWER
Tuner 1.25V REG Input
+3.3V_NORMAL
3.3V_EMMC
+1.8V_NORMAL
EMMC_VCCQ
L2319
L2306
BLM18PG121SN1D
BLM18PG121SN1D
C2371
C2372
0.1uF
0.1uF
16V
16V
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
3.9K
10V
R2321
VCC
SS
3
6
R2314
3K
R2300
1%
10K
EN
GND
4
5
R2
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
BLM18PG121SN1D
AOZ1038PI
[EP]LX
*NOTE 17
PGND
NC_2
1
8
OPT
C2312
C2314
Placed on SMD-TOP
R23160
VIN
NC_1
10uF
10uF
2
7
10V
10V
C2311
AGND
EN
3
6
2200pF
C2300
C2304
C2309
R2317
10uF
10uF
0.1uF
50V
20K
16V
16V
16V
FB
COMP
4
5
6A
OPT
R2318
POWER_ON/OFF2_1
C2310
10K
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 © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
+12V
L2311
CIS21J121
+24V
L2305
CIS21J121
C2317
0.1uF
+3.3V_NORMAL
50V
R2330
LPB
1K
R2302
100
R2312
L/DIM0_VS
INV_CTL
100
A_DIM
PWM_DIM
1
+12V
L2310
ERROR_OUT
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
0.1uF
10uF
+5V_NORMAL
16V
10V
R2334
10K
POWER_ON/OFF2_2
DDR MAIN 1.5V
4
MAX
4.7 A
+3.3V_NORMAL
+3.5V_ST
L2308
C2320
C2316
C2352
C2353
10uF
R1
10uF
10uF
3300pF
10V
10V
50V
10V
OPT
R2
Vout=0.827*(1+R1/R2)=1.521V
PANEL_POWER
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%
C2340
1.5A
C2324
10uF
10uF
EN
GND
10V
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
C2341
C2333
C2337
GND_1
PH_1
0.1uF
3
IC2302
10
22uF
22uF
16V
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
+24V
+5V_NORMAL
4
+12V
L2309
BLM18PG121SN1D
C2354
10uF
16V
C2343
C2303
22uF
0.1uF
10V
50V
+2.5V_NORMAL
Vout=0.765*(1+R1/R2)
4
C2344
0.1uF
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
VIN
50V
R1
FRC3
VSENSE
C2302
R2
4.7uF
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
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
IC2306
URSA5
[EP]PGND
TPS54425PWPR
R2322-*1
24K
1%
VIN2
VO
14
1
R2
R2322
VIN1
VFB
22K
13
2
1%
FRC3
VBST
VREG5
12
3
C2318
4A
1uF
SW2
SS
10V
11
4
OPT
R1
C2321
SW1
GND
R2313
22pF
10
5
9.1K
C2319
1%
50V
R2309
100K
3300pF
PGND2
PG
50V
9
6
+1.0VDC
PGND1
EN
R2310
10K
8
7
C2305
POWER_ON/OFF2_3
0.1uF
OPT
L2316
2uH
C2368
C2369
22uF
22uF
10V
10V
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
SS/TR
6
9
COMP
R2357
1K
7
8
POWER_ON/OFF2_3
Switching freq: 400 ~ 580 Khz
LG1152
POWER
LGE Internal Use Only
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