LG 22LH4530, Service Manual

Page: 23 / 26

THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
C540
0.1uF
16V
JP500
R522
10K
1%
HD(12V Panel)
JK500
KJA-DC-1-0032
1
2
4
MULTI_ON
R540
4.7K
C534
4.7uF
10V
R531
10K
1%
C536
1uF
10V
OPT
C502
10uF
25V
OPT
C512
0.1uF
50V
HD(12V Panel)
C509
2.2uF
25V
C532
0.1uF
16V
R509
2K
OPT
C517
0.1uF
16V
HD(12V Panel)
+5V_PANEL_POWER
C511
0.1uF
50V
R520
43K
1%
HD(12V Panel)
JP501
R538
100K
R517
33K
HD(12V Panel)
R544
22K
R508
10K
HD(12V Panel)
+12V_PANEL_POWER
C516
0.1uF
50V
R542
100
R543
10K
+5V
+3.3V
+3.3V_ST
C506
0.1uF
50V
HD(12V Panel)
+5V
+19V
C500
47uF
25V
105C
+12V_Normal
POWER_ON/OFF1
R537
10K
C504
2.2uF
25V
HD(12V Panel)
C520
0.1uF
16V
C501
10uF
25V
OPT
R519
33K
R521
100K
1%
HD(12V Panel)
+3.3V_ST
C510
0.47uF
16V
OPT
PANEL_CTL
+12V_Normal
R549
10K
R559
1K
+1.8V_DDR
+3.3V
R551
0
FHD(5V Panel)
R550
0
HD(12V Panel)
R541
0
HD(12V Panel)
R539
0
FHD(5V Panel)
R567 0
FHD(5V Panel)
R588 1K
FHD(5V Panel)
IC504
AZ1117EH-ADJTRG1
ADJ/GND
OUT IN
R500
330
1/10W
1%
R516
150
1/16W
1%
C535
4.7uF
16V
MULTI_ON
IC500
MP2315GJ
HD(12V Panel)
3
SW
2
IN
4
GND
1
AAM
5
BST
6
EN/SYNC
7
VCC
8
FB
IC503
MP2315GJ
3
SW
2
IN
4
GND
1
AAM
5
BST
6
EN/SYNC
7
VCC
8
FB
R504
47K
R501
47K
OPT
R529
47K
1%
R514
100
R505
100
HD(12V Panel)
R546-*1
75K
HD(12V Panel)
Q503
SSM3J332R
S
G
D
Q502
SSM3J332R
S
G
D
Q500
2N3904S
E
B
C
Q501
2N3904S
E
B
C
Q504
2N3904S
FHD(5V Panel)
E
B
C
C524
10uF
16V
HD(12V Panel)
C522
10uF
16V
HD(12V Panel)
C528
0.1uF
16V
HD(12V Panel)
C527
10uF
6.3V C531
10uF
6.3V
10uF
C533
6.3V
10uF
C537
6.3V
R502
10K
IC501
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
C505
560pF
50V
ZD500
2.5V
OPT
C503
10uF
10V
C507
10uF
10V
+3.3V_ST
+1.15V_VDDC
R506
3K
1%
R503
6.8K
1%
C508
10uF
10V
OPT
C513
10uF
10V
OPT
ZD300
2.5V
OPT
L502
10uH HD(12V Panel)
L503
10uH
R546
15K
FHD(5V Panel)
R545
100K
R530
7.5K
1%
POWER 6 7
3A
PANEL POWER CONTROL
19V to 12V (For HD Panel)
3A
Check the Ripple
R2
1.3A
Vout=1.25*(1+R2/R1)+Iadj*R2
R1
68->100 150322 YJLee
To reduce SW spike voltage
68->100 150322 YJLee
To reduce SW spike voltage
Change X7R(3216)->X5R(2012) for CI
150625 YJLee
25V->16V for CI
150625 YJLee
10V->6.3V for CI
150625 YJLee
10V->6.3V for CI
150625 YJLee
10V->6.3V for CI
150625 YJLee
** 3.3V_ST -> 1.15V VDDC
X5R(EAE31360401) -> X7R(EAE52158501)
To improve CST Issue.
2013.11.27 by BJ.KIM
X5R(EAE31360401) -> X7R(EAE52158501)
To improve CST Issue.
2013.11.27 by BJ.KIM
V0 = 0.8*(1+(R1/R2))
R1
R2
2015-06-27
M1L_CI
R546:10k->15k
FHD/150918 HJChoi
R530:8.2k->7.5k
150918 HJChoi
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Only for training and service purposes
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