LG 50PX950, Руководство по обслуживанию

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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.
SMPS POWER
08/10/xx
EAX63347201
C506
0.1uF
16V
1.2V_1.8V_EN
R512 0
+5V_ST
R536 6.2K
1%
C559
0.1uF
16V
RL_ON
AC_DET
C544
10uF
25V
C502
10uF
6.3V
C522
10uF
6.3V
READY RL_ON
5V_ON
P_+5V
P_17V
C553
0.1uF
C518
0.1uF
50V
+3.3V_ST
L501
CB4532UK121E
EAM38058401
IC505
MP8706EN-C247-LF-Z
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
L506
MLB-201209-0120P-N2
0LCML00003B
C515
0.1uF
16V
R501
10K
READY
+5V_TU
C505
10uF
6.3V
READY
R514
100
L502
CB3216PA501E
EAM44020101
C507
0.1uF
16V
C523
100uF
16V
L515
10uH
NR8040T100M
R533
10K
C521
0.1uF
16V
C501
100uF
16V
C513
10uF
6.3V
C500
10uF
6.3V
READY ERROR_DET
C503
0.1uF
16V
+5V_ST
C509
0.1uF
16V
IC506
AP2121N-3.3TRE1
EAN58801701
1
GND
2 VOUT 3
VIN
L516
MLB-201209-0120P-N2
0LCML00003B
R502
100
C508
10uF
6.3V
C557
10uF
6.3V
L507
+5V_ST
C519
33uF
25V
D3.3V
R506
100
R500
10K
READY
C558
10uF
6.3V
C520
0.1uF
16V
R513
10K
READY
C552
1uF
50V
D1.8V
P_17V
L511
+3.3V_NEC_ST
L504
MLB-201209-0120P-N2
0LCML00003B
A2.5V
R504 910
1%
R505 66.5
1%
R509
1K
1%
IC502
AZ1085S-ADJTR/E1
0IPMG78346A
1
ADJ/GND
2
OUTPUT
3
INPUT
L505
MLB-201209-0120P-N2
0LCML00003B
P500
SMAW200-H18S1
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
15
10
5
19
R515
100K
C538
22uF
16V
R522
0
C536
22uF
16V
C535
0.1uF
1.2V_1.8V_EN
L509
2uH
C530
22uF
16V
R523
0
C529
0.1uF
R520
0
C531
0.1uF
C533
22uF
C537
22uF
16V
L510
BLM18PG121SN1D
10
R516
A1.2V
C543
0.1uF
16V
C528
0.1uF
D1.2V
C532
1uF
10V
C517
100uF
16V
C525
100uF
16V
C516
100uF
16V
READY
C556
100uF
16V
R531
100K
READY
A3.3V
C542
0.1uF
16V
R529 1.2K
1%
R519
47
L514
UBW2012-121F
R530
13K
1/8W
1%
R528 39K
1%
R527
0
C540
1uF
C526
47uF
16V
+3.3V_EN
001:H5
C541
22uF
10V
C549
22uF
10V
C534
0.1uF
C548
100uF
16V
D3.3V
IC504
MP8706EN-C247-LF-Z
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
L508
3.6uH
C527
22uF
10V
C550
0.1uF
16V
C551
100uF
16V
READY
R521
470K
1%
R525
820K
1%
R510
10K
1/10W
1%
C561
0.01uF
25V
R503
6.8K
C512
22uF
10V
L503
3.6uH
NR8040T3R6N
C510 0.01uF 25V
C504
22uF
10V
C562
100pF
50V
READY
R508
10K
C511
0.01uF
25V
0.1uF
C564
L500
CIC21J501NE
R511
10.5K
1%
R532
47
1/10W
5%
IC501
MP2108DQ
3
LX
2
VIN
4
PGND
1
BST
5
SGND
6
SS
7
FB
8
COMP
9
VREF
10
RUN
IC503
MP2208DL-LF-Z
3
PGND_1
2
SS
4
SW_1
1
AGND
6
NC
5
IN_1
7
BS
8
VCC
9
POK
10
IN_2
11
SW_2
12
PGND_2
13
EN/SYNC
14
FB
15
EP
C514
3300pF
50V
P_+5V
P_+5V
+5V_ST
+5V_ST
R539
0
1/10W
5%
R535 15K
1%
R540 18K
1%
R537
0
1/10W
5%
R538
300K
1/10W
5%
5 13
Vout=(1+R1/R2)*0.8
TUNER 5V
CURRENT: MAX 3A
Multi Power(5V -->3.3V)
R1
BCM3556 core 2.5V
CURRENT: MAX 6A
POWER Wafer 24P
3A
Multi Power(5V -->2.5V)
POWER B/D
Stand-by (5VST --> +3.3V)
R2
MUST BE CHANGE ADJ LDO
AFTER THEN CHECK CST
V0 = 1.25(1+R2/R1)
R1
R2
CURRENT: MAX 3A
R1
Vout=0.8*(1+R1/R2)
R2
130mA
3A
Vout=0.8*(1+R1/R2)
R1
R2
R1
300 mA
R2
Placed on SMD-TOP
Vout=0.9*(1+R2/R1)=1.845
Placed on SMD-TOP
C IN
3A
Replaced Part
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Only for training and service purposes
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