DOWNLOAD LG 50PT250B-SG (CHASSIS:PB12K) Service Manual ↓ Size: 7.31 MB | Pages: 63 in PDF or view online for FREE

Model
50PT250B-SG (CHASSIS:PB12K)
Pages
63
Size
7.31 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pt250b-sg-chassis-pb12k.pdf
Date
PREV: LG 50PT250B-SA (CHASSIS:PB11K) Service Manual

LG 50PT250B-SG (CHASSIS:PB12K) Service Manual ▷ View online

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.
7V
P_17V
C648
10uF
25V
C613
10uF
16V
C603
0.1uF
16V
C650
1uF
6.3V
READY
RL_ON
R603
59K
1%
L601
120-ohm
+2.5V_AVDD
+3.3V_ST
C611
10uF
6.3V
C634
0.1uF
16V
ERROR_DET
R600
10K
+5V
IC605
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
+3.3V_TU
AC_DET
L611
C620
1uF
6.3V
L602
120-ohm
C625
22uF
6.3V
C641
0.1uF
50V
R605
150
1%
+1.2V_DE
+3.3V_AVDD
+3.3V_TU
C600
10uF
25V
L604
120-ohm
2A
L603
NR5040T2R2N 
2.2uH
C629
0.1uF
50V
C610
10uF
25V
+3.3V_TU
C647
10uF
16V
R615
1.2K
C631
10uF
6.3V
5V_ON
C623
10uF
6.3V
+5V_TU
+5V
P600
SMAW200-H18S1
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
15
10
5
19
IC608
AP2121N-3.3TRE1 
READY
1
GND
2
VOUT
3
VIN
C628
10uF
25V
IC601
TJ3940S-2.5V-3L
1
GND
2
VOUT
3
VIN
R604
17.4K
1%
R613
100K
1%
IC607
AZ1117BH-ADJTRE1
2
OUTPUT
3
INPUT
1
ADJ/GND
R619
1
C612
0.1uF
16V
C605
0.1uF
16V
FB_CORE
IC600
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
C626
10uF
16V
+3.3V_DE
C617
10uF
25V
C615
10uF
10V
IC604
AP1117EG-13 
1
ADJ/GND
2
OUT
3
IN
C646
10uF
25V
+3.3V_ST
C635
0.1uF
50V
R606
75
1%
R616
10
C644
10uF
10V
READY
IC606
AZ1117BH-ADJTRE1
2
OUTPUT
3
INPUT
1
ADJ/GND
IC603
TPS54327DDAR
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
R623
0
READY
+3.3V
R609
330
R621
22K
1%
+3.3V
R601
10K
+3.3V_DE
C609
10uF
10V
+5V_ST
R608
1
L608
READY
C642
10uF
16V
C637
0.1uF
16V
C602
0.1uF
16V
C651
0.1uF
16V
P_17V
+1.5V_DDR_IN
+5V_ST
C630
100pF
50V
C601
0.1uF
50V
C621
1uF
10V
C638
22pF
50V
R620
180K
1%
R618
10K
R610
110
C639
1uF
10V
C627
0.1uF
16V
+5V
C643
0.1uF
16V
R614
1
C645
0.1uF
16V
READY
C640
3300pF
50V
C633
3300pF
50V
C608
0.1uF
16V
C616
0.1uF
16V
L610
READY
R602
1
R611
100
1%
C618
0.1uF
50V
+3.3V
C604
0.1uF
16V
L605
NR5040T3R3N
3.3uH
L600
120-ohm
Power Main
R617
10K
C606
10uF
6.3V
+1.10V_VDDC
C649
10uF
16V
C632
1uF
10V
C619
22pF
50V
R612
62K
1%
C622
3300pF
50V
IC602
AP2121N-3.3TRE1 
1
GND
2
VOUT
3
VIN
C624
0.1uF
50V
L606
NR5040T3R3N
3.3uH
C607
0.1uF
16V
L609
READY
C636
10uF
16V
R607
1K
1%
POWER
GP4 LM1
20110531
5
7
R1
Power Wafer
R2
Vout=0.765*(1+R1/R2)
Vout=0.765*(1+R1/R2)
3.3V_AVDD / 2.5AVDD
+3.3V Multi
1.24V Core
R1
3.3Vst
1.53V DDR
R2
R2
Vout=0.765*(1+R1/R2)
R1
R1
R2
1.26V Tuner
Vout=1.25*(1+R2/R1)
Vout=1.25*(1+R2/R1)
R1
R2
Vout=1.25*(1+R2/R1)
R1
R2
7V
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.
R2032
12K
+3.3V
R2019
75
COMP2_Y+
R2028
10K
R2025
75
R2024
75
R2004
10K
C2011
10pF
50V
READY
COMP1_Pr+
C2009
1000pF
50V
AV_CVBS2_DET
COMP2_DET
R2022
470K
JK2001
PPJ239-01
5J
[GN2]O-SPRING
6J
[GN2]E-LUG
4J
[GN2]CONTACT
7K
[BL2]E-LUG-S
5K
[BL2]O-SPRING
7L
[RD2]E-LUG-S
5L
[RD2]O-SPRING_1
5M
[WH2]O-SPRING
4N
[RD2]CONTACT
5N
[RD2]O-SPRING_2
6N
[RD2]E-LUG
6D
[GN1]E-LUG
5D
[GN1]O-SPRING
4D
[GN1]CONTACT
7E
[BL1]E-LUG-S
5E
[BL1]O-SPRING
7F
[RD1]E-LUG-S
5F
[RD1]O-SPRING_1
4F
[RD1]CONTACT_1
5G
[WH1]O-SPRING
4H
[RD1]CONTACT_2
5H
[RD1]O-SPRING_2
6H
[RD1]E-LUG
+3.3V
COMP1_DET
R2027
10K
R2016
75
COMP2_Pr+
C2005
10pF
50V
READY
R2007
1K
R2029
10K
R2003
1K
R2021
470K
R2020
470K
AV_RIN_COM1
C2004
10pF
50V
READY
AV_LIN_COM1
AV_RIN_COM2
C2003
1000pF
50V
R2006
10K
COMP1_Y+
R2018
75
R2001
10K
R2023
75
C2008
10pF
50V
READY
R2033
12K
COMP1_Pb+
R2026
10K
C2007
1000pF
50V
AV_LIN_COM2
+3.3V
C2010
1000pF
50V
R2005
1K
R2017
470K
R2035
12K
COMP2_Pb+
C2006
10pF
50V
READY
C2012
10pF
50V
READY
R2034
12K
USB / LVDS 
GP4 LM1
20110303
6
7
HIGH
RESULT
HIGH
AV_CVBS_DET
AV_CVBS
COMP2_DET
LOW
HIGH
LOW
LOW
LOW
COMP2_DET
HIGH
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