DOWNLOAD LG 39LN549C (CHASSIS:LA3AA) Service Manual ↓ Size: 3.78 MB | Pages: 36 in PDF or view online for FREE

Model
39LN549C (CHASSIS:LA3AA)
Pages
36
Size
3.78 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
39ln549c-chassis-la3aa.pdf
Date
PREV: LG 39LN57XX / 39LN5758 / 39LN575S / 39LN575V / 39LN5778 / 39LN577S / 39LN577V / 39LN578V (CHASSIS:LD33B) Service Manual

LG 39LN549C (CHASSIS:LA3AA) 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.
/SPI_CS
R304
0
OPT
Q301
MMBT3904(NXP)
OPT
E
B
C
SPI_SCK
C301
0.1uF
S_FLASH_OS
SPI_SDI
/FLASH_WP
IC301
MX25L8006EM2I-12G
S_FLASH_OS_MACRONIX
3
WP#
2
SO/SIO1
4
GND
1
CS#
5
SI/SIO0
6
SCLK
7
HOLD#
8
VCC
SPI_SDO
R303
33
S_FLASH_OS
R302
4.7K
OPT
+3.5V_ST
+3.5V_ST
R301
10K
OPT
+3.5V_ST
IC301-*1
W25Q80BVSSIG
S_FLASH_OS_WINBOND
3
%WP[IO2]
2
DO[IO1]
4
GND
1
CS
5
DI[IO0]
6
CLK
7
HOLD[IO3]
8
VCC
3
Serial FLASH
Serial Flash for SPI boot_NON_OS and OS
LA2AW
2012.09.11
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.
C436
100pF
50V
+3.5V_ST
C431
10uF
25V
R426
10K
+3.5V_ST
+24V
C432
22uF
10V
C425
10uF
10V
R454
10K
IC404
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
C438
0.1uF
16V
IC405
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
POWER_DET
POWER_ON/OFF_1
R433
330K
1/16W
5%
PANEL_VCC
R429
10K
IC406
NCP803SN293
PD_+24V_PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
C426
0.1uF
16V
R462
100
PD_+24V
R438
27K
1/16W
1%
10uF
C418
10V
+1.10V_VDDC
L408
C443
0.1uF
16V
NON_CI_CAP
+3.5V_ST
+1.5V_DDR
+12V
C446
0.1uF
16V
+3.3V_Normal
C440
0.1uF
16V
R460
100K
PD_+24V
R435
33K
L410
BLM18PG121SN1D
C434
22uF
10V
PANEL_CTL
001:AL22
C416
10uF
10V
560pF
C433
50V
C417
0.1uF
16V
NON_CI_CAP
+3.5V_ST
+3.5V_ST
C419
0.1uF
16V
NON_CI_CAP
R430
10K
Q406
AO3407A
G
D
S
R437
4.7K
1/16W
1%
R432
15K
C442
0.1uF
16V
C444
4.7uF
16V
FET_AOS
IC402
TJ3940S-2.5V-3L
LDO_OLD
1
GND
2
VOUT
3
VIN
C430
0.1uF
16V
R452
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]
R457
100K
C421
0.1uF
16V
NON_CI_CAP
+3.3V_Normal
C445
0.1uF
R436
5.6K
+12V
+3.3V_Normal
R425
10K
R439
56K
1/16W
1%
R465
10K
RESET_IC_SOC_RESET
+2.5V_Normal
C441
0.1uF
16V
PD_+24V
+3.3V_Normal
R458
22K
R456
10K
R440
4.3K
1/16W
1%
C439
22uF
10V
L411
3.6uH
NR8040T3R6N
IC405-*1
APX803D29
PWR_DET_ON_DIODES
1
GND
3
VCC
2
RESET
IC406-*1
APX803D29
PD_+24V_PWR_DET_DIODES
1
GND
3
VCC
2
RESET
C423
0.01uF
50V
0.01uF
C429
3300pF
50V
C427
3300pF
R444
1.5K
1%
PD_+24V
R450
2.7K
1%
PD_+12V
R455
0
5%
PD_+3.5V
R434
1
R443
8.2K
1%
PD_+24V
C420
0.015uF
50V
0.015uF
Q407
MMBT3904(NXP)
E
B
C
Q405
MMBT3904(NXP)
E
B
C
C422
0.33uF
16V
R451
1.2K
1%
PD_+12V
Q408
AO3407A
FET_AOS
G
D
S
C424
0.1uF
25V
C437
0.1uF
25V
NON_CI_CAP
C435
0.1uF
25V
OPT
C428
10uF
25V
OPT
R459
100
FET_AOS
R451-*1
5.1K
1%
PD_KR_42_LIPS
L409
CIS21J121
120
L412
BLM18SG700TN1D
R455-*1
100
1%
PD_KR_42_LIPS
R441-*1
4.7K
PANEL_DISCHARGE_RES_4.7K
R442-*1
4.7K
PANEL_DISCHARGE_RES_4.7K
Q408-*2
AO3435
FET_2.5V_AOS
G
D
S
Q408-*1
DMP2130L
FET_2.5V_DIODE
G
D
S
R459-*1
2.2K
FET_2.5V
C444-*1
2.2uF
10V
FET_2.5V
R441
5.6K
PANEL_DISCHARGE_RES_5.6K
R442
5.6K
PANEL_DISCHARGE_RES_5.6K
C448
22uF
10V
R441-*2
5.1K
5.1K_PANEL_DISCHARGE
R442-*2
5.1K
5.1K_PANEL_DISCHARGE
R413
10K
PWM_DIM
PWM1
L405
MLB-201209-0120P-N2
+24V
R418
10K
R420
100
T120
+3.5V_ST
P401
SMAW200-H18S1
14
12V
9
24V
4
PDIM#1
18
GND
13
12V
8
GND
3
3.5V
17
GND
12
GND
7
GND
2
DRV ON
16
N.C
11
GND
6
PDIM#2
1
PWR ON
15
12V
10
24V
5
3.5V
19
.
+3.5V_ST
R406
10K
OPT
R417
10K
R415
100
Q401
MMBT3904(NXP)
E
B
C
L413
MLB-201209-0120P-N2
L402
CIC21J501NE
Q403
MMBT3904(NXP)
E
B
C
R410
4.7K
R416
1K
L403
CIC21J501NE
+3.5V_ST
+12V
C403
0.1uF
16V
R409
10K
C407
0.1uF
16V
+3.3V_Normal
INV_CTL
C405
0.1uF
50V
RL_ON
+3.5V_ST
R414
33K
OPT
R419
3.9K
OPT
Q402
MMBT3906(NXP) 
1
2
3
R407
10K
C401
68uF
35V
OPT
C411
22uF
16V
C409
3300pF
50V
R404
33K
1%
+5V_Normal
R403
10K
C402
22uF
16V
OPT
+3.3V_Normal
+5V_Normal
R411
2K
R401
27K
1%
C408
100pF
50V
OPT
R405
100K
USB1_OCD
C413
0.1uF
16V
OPT
C406
4.7uF 10V
L404
3.6uH
+5V_USB_1
R402
11K 1%
L401
CIC21J501NE
+12V
C404
10uF
16V
R412
20K
C410
0.047uF
25V
R421
4.7K
OPT
C414-*1
10uF 10V
CAP_10uF_X7R
C412
330pF
50V
USB1_CTL
C414
10uF
10V
CAP_10uF_X5R
85C
IC401
TPS65281RGV 
3
ROSC
2
COMP
4
RLIM
1
SS
5
EN_SW
6
FAULT
7
AGND
8
SW_OUT
9
SW_IN
10
FB
11
LX
12
BST
13
PGND
14
VIN
15
V7V
16
EN
17
[EP]
R408
0
C415
22uF
10V
D404
5V
D401
5V OPT
D402
5V
OPT
D403
5V
OPT
D405
5V
OPT
POWER_DET_RESET
R461
300
RESET_IC_SOC_RESET
IC402-*1
TJ1118S-2.5
LDO_NEW
1
GND
2
OUT
3
IN
R461-*1
100
1/16W
5%
3.5V_SOC_RESET
R2
+1.5V_DDR
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
R1
R2
$ 0.165
S7LR core 1.2V volt
+3.5V_ST --> 3.375V --> 3.46V
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)
POWER
4
FROM LIPS & POWER B/D
LA2AW
2012.09.11
Vout=0.8*(1+R1/R2)
CHANGE TO
10UF/10V/X5R
R1
+5V_Normal
&
+5V_USB_1
CHANGE TO
16V/X5R
R2
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.
C531
390pF
50V
0.1uF
C519
50V
R502
10K
NON_LIPS
AUD_MASTER_CLK
C524
10uF
35V
R511
12
0.1uF
C540
50V
AMP_SCL
0.1uF
C520
50V
C511
10uF
10V
OPT
R504
100
R508
12
L505
10.0uH
AUD_LRCH
L501
CIS21J121
L503
10.0uH
0.1uF
C539
50V
L504
10.0uH
R509
12
SPK_R-
+24V_AMP
0.1uF
C522
50V
SPK_R+
C503
100pF
50V
AUD_LRCK
C527
22000pF
50V
R507
3.3
OPT
C526
22000pF
50V
R522
0
LIPS_ONLY
D504
100V
1N4148W
OPT
D501
100V
1N4148W
OPT
SPK_L-
C507
33pF
50V
R519
4.7K
AMP_RESET
+24V_AMP
C504
1000pF
50V
P501
WAFER-ANGLE
1
2
3
4
AUD_SCK
IC501
NTP-7500L
1
AGND_PLL
2
AVDD_PLL
3
DVDD_PLL
4
LF
5
DGND_PLL
6
GND_1
7
DGND
8
DVDD
9
SDATA
10
WCK
11
BCK
12
SDA
13
SCL
14
/FAULT
15
MONITOR0
16
MONITOR1
17
MONITOR2
18
BST2B
19
PGND2B
20
OUT2B_1
21
OUT2B_2
22
PVDD2_1
23
PVDD2_2
24
PVDD2_3
25
OUT2A_1
26
OUT2A_2
27
PGND2A
28
BST2A
29
VDR2
30
AGND
31
VCC_5
32
VDR1
33
BST1B
34
PGND1B
35
OUT1B_1
36
OUT1B_2
37
PVDD1_1
38
PVDD1_2
39
PVDD1_3
40
OUT1A_1
41
OUT1A_2
42
PGND1A
43
BST1A
44
/RESET
45
AD
46
GND_IO
47
CLK_I
48
VDD_IO
49
[EP]
0.1uF
C514
16V
R514
12
C509
33pF
50V
Q501
MMBT3904(NXP)
NON_LIPS
E
B
C
R521
10K
C510
10uF
10V
R518
4.7K
+24V_AMP
SPK_L+
R515
12
0.1uF
C501
50V
C529
1uF
25V
C523
10uF
35V
C516
1000pF
50V
L502
BLM18PG121SN1D
C515
10uF
10V
SPK_L-
C533
390pF
50V
C532
390pF
50V
L506
10.0uH
R503
100
POWER_DET
AMP_SDA
0.1uF
C521
50V
C528
1uF
25V
R512
12
R501
10K
NON_LIPS
SPK_R+
C534
1uF
25V
+3.5V_ST
C506
10uF
10V
AMP_MUTE
C518
22000pF
50V
0.1uF
C502
50V
C512
0.1uF
16V
0.1uF
C508
16V
+24V
SPK_L+
+3.3V_Normal
C505
1000pF
50V
D502
100V
1N4148W
OPT
R516
4.7K
R506
100
NON_LIPS
R517
4.7K
C530
390pF
50V
SPK_R-
0.1uF
C513
16V
C517
22000pF
50V
D503
100V
1N4148W
OPT
C535
0.47uF
50V
C536
0.47uF
50V
0.1uF
C538
50V
0.1uF
C537
50V
R505
3.3K
R520
10K
NON_LIPS
R510
12
R513
12
C525
0.01uF
50V
OPT
SPEAKER_L
SPEAKER_R
NTP-7500
Audio amp(NTP-7500)
5
LA2AW
2012.09.11
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.
IR/CONTROL
6
C608
0.1uF
16V
OPT
R603
100
+3.5V_ST
L601
BLM18PG121SN1D
R604
0
IR_OUT_US
R610
47K
IR_OUT
KEY2
R601
22
IR_OUT
R606
10K
1%
+3.5V_ST
IR
R607
10K
IR_OUT_EU
L603
BLM18PG121SN1D
R602
100
+3.5V_ST
C607
100pF
50V
C604
0.1uF
L602
BLM18PG121SN1D
+3.5V_ST
C603
0.1uF
C602
1000pF
50V
R608
10K
1%
C601
0.1uF
16V
IR_OUT
KEY1
+3.5V_ST
R611
3.3K
R605
1K
IR_OUT_EU
LED_R
R615
1.5K
VA602
5.6V
AMOTECH CO., LTD.
OPT
VA601
5.6V
AMOTECH CO., LTD.
OPT
ZD603
5.48VTO5.76V 
OPT
Q601
2SC3052
IR_OUT_EU
E
B
C
Q602
2SC3052
IR_OUT
E
B
C
R609
1K
IR_OUT
P601
12507WR-08L
1
2
3
4
5
6
7
8
9
IR/LED and control for normal models.
LA2AW
2012.09.11
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