LG 42LN5700 Service Manual

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.
+5V_NORMAL
L2409
BLM18PG121SN1D
C2430
10uF
16V
C2413
0.1uF
50V
+12V
C2450
0.01uF
50V
POWER_ON/OFF2_3
C2406
0.1uF
16V
+24V
C2418
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
R2452
2K
1/8W
PANEL DISCHARGE RESISTOR
C2404
0.1uF
16V
C2453
0.1uF
16V
C2420
0.1uF
16V
R2408
10K
POWER_ON/OFF2_1
POWER_ON/OFF2_2
R2419
100
R2455
47K 1%
Q2407
AO3407A
G
D S
PANEL_VCC
C2454
10uF
10V
+3.5V_ST
+3.3V_NORMAL
C2411
0.1uF
16V
L2402
CIS21J121
C2435
4.7uF
50V
PWM_DIM1
R2432
330K1/16W 5%
+24V
R2410
2.7K
1%
P_DET_ONLY_12V
PWM_DIM2
C2447
10uF
10V
C2455
0.1uF
16V
POWER_ON/OFF1
R2438
51K
1%
R2411
1.5K
1%
P_DET_BOTH_24_3.5V
R2453
10K
C2410
0.1uF
50V
P_DET_BOTH_12_3.5V
C2451
10uF
10V
C2429
0.1uF
16V
L2407
4.7uH
C2408
10uF
10V
C2433
0.1uF
50V
C2443
0.1uF
50V
C2407
10uF
10V
L2406
BLM18PG121SN1D
RL_ON
C2401
0.1uF
50V
C2403
0.1uF
16V
OPT
Q2401
MMBT3906(NXP)
1
2
3
C2412
0.1uF
16V
L2408
BLM18SG121TN1D
R2416
100K
P_DET_BOTH_12_3.5V
R2431
15K
1/16W 5%
+3.5V_ST
C2440
1uF
25V
OPT
+24V
C2442
10uF
10V
R2418
100
P_DET_BOTH_12_3.5V
R2451
2K
1/8W
PANEL DISCHARGE RESISTOR
C2438
10uF
10V
PANEL_CTL
+3.5V_ST
PANEL_VCC
R2406 10K
1%
C2448
10uF
10V
R2409
1.2K
1%
P_DET_ONLY_12V
R2417
100K
L2400
BLM18PG121SN1D
R2421
10K
OPT
+12V
L2405
BLM18PG121SN1D
C2431
10uF
16V
C2439
10uF
10V
Q2406
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
+1.2V_MTK_CORE
R2401
10K
L2404
2uH
C2400
10uF
16V
R2436 16K
1%
R2433
56K
1/16W
1%
C2432
0.01uF
50V
C2434
0.1uF
16V
OPT
C2428
10uF
10V
C2414
10uF
10V
R2430
10K
R2437
10K
R2427 30K
1%
C2444
10uF
10V
C2456
10uF
10V
R2428 10K
1%
POWER_DET
R2412
8.2K
P_DET_BOTH_24_3.5V
L2401
CIS21J121
C2409
10uF
10V
R2439
10K
R2454
0
1/16W
5%
OPT
VDD3V3_HDMI
C2427
0.1uF
16V
+3.3V_NORMAL
POWER_ON/OFF2_4
D2401 40V B540C
C2423
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
R2413
0
5%
P_DET_BOTH_24_3.5V
C2452
100pF
50V
POWER_ON/OFF2_1
R2404 5.1K
1%
R2400
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
INV_CTL
R2426
1K
L2411
2.2uH
NR5040T2R2N
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]
C2417
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
C2416
3300pF
50V
C2437
0.1uF
16V
C2425
22uF
10V
125C
C2426
22uF
10V
125C
P2400
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
L/DIM_OUT
R2457 4.7K
L/DIM_OUT
R2458
33
L/DIM_OUT
R2459
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%
P_DET_BOTH_12_3.5V
R2409-*1
1.2K
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
P_DET_BOTH_24_3.5V
R2418-*1
100
P_DET_BOTH_24_3.5V
R2410-*2
2.7K
1%
P_DET_BOTH_12_24V
R2409-*2
1.2K
1%
P_DET_BOTH_12_24V
R2412-*1
8.2K
P_DET_BOTH_12_24V
R2411-*1
1.5K
1%
P_DET_BOTH_12_24V
R2416-*2
100K
P_DET_BOTH_12_24V
IC2401-*2
NCP803SN293
P_DET_BOTH_12_24V
1
GND
3
VCC
2
RESET
R2418-*2
100
P_DET_BOTH_12_24V
C2410-*1
0.1uF
50V
P_DET_BOTH_24_3.5V
C2410-*2
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
Copyright ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

LG 42LN5700 Specifications

General

Display diagonal	42 \
Native aspect ratio	16:9
Native refresh rate	60 Hz
LED backlighting type	-
Supported video modes	1080i, 1080p, 720p
Screen format adjustments	4:3
Supported graphics resolutions	1920 x 1080 (HD 1080)
Motion interpolation technology	TruMotion 120 Hz
3D	No
Photo effects	Cinema, Vivid
Playback modes	Zoom
Volume control	Digital
Audio decoders	Dolby Digital, Dolby Digital DTS
RMS rated power	20 W
Number of speakers	2
HDMI ports quantity	3
DVI-D ports quantity	0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Component video (YPbPr/YCbCr) in	1
Consumer Electronics Control (CEC)	SimpLink
Smart modes	Cinema, Game
Lifestyle apps	Skype
Audio formats supported	AAC, AC3, MP3, PCM
Video formats supported	DIVX, DIVX HD, MPEG
Control type	Buttons
Product color	Black
Panel mounting interface	200 x 200 mm
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.3 W
Power consumption (typical)	41.4 W
Sustainability certificates	ENERGY STAR
Package depth	175 mm
Package width	1150 mm
Package height	659.8 mm
Package weight	14197 g

Weight and Dimensions

Depth (with stand)	234.9 mm
Height (with stand)	627.8 mm
Weight (with stand)	10704 g
Depth (without stand)	78.9 mm
Width (without stand)	967.9 mm
Height (without stand)	565.9 mm
Weight (without stand)	9616 g