LG 43LF5400-UB Service Manual page 25
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Also See for 43LF5400-UB:
- Safety and reference (45 pages) ,
- Owner's manual (31 pages) ,
- Service manual (29 pages)
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L15 NA POWER BLOCK
FROM LIPS or POWER B/D
TR_NXP
+3.3V_ST
MMBT3906(NXP)
Q201
1
3
OPT
OPT
R215
R201
33K
2
10K
R205
10K
RL_ON
R202
10K
OPT
R207
0
To make high at RL_ON
when AC On
OPT
VR200
ICVS0518150FR_
+3.3V_NORMAL
+3.3V_ST
R206
R209
1K
100
R200
C
R203
10K
TR_NXP
10K
B
INV_CTL
Q200
MMBT3904(NXP)
C
L208
E
TR_KEC
B
Q200-*1
2N3904S
MLB-201209-0120P-N2
OPT
L201
E
MLB-201209-0120P-N2
M13.2V
C203
C205
10uF
0.1uF
25V
25V
+1.8V_DDR
+3.3V_NORMAL
+1.8V_DDR
IC200
AZ1117EH-ADJTRG1
IN
OUT
R1
R214
C201
ADJ/GND
1%
0
10uF
6.3V
R212
3.9K
C208
10uF
6.3V
R2
1%
R213
1.6K
Check ESR!!
Vout=1.25*(1+R2/R1)+I(ADJ)XR2
+3.3V_STANDBY
M13.2V
L200
BLM18PG121SN1D
OPT
C200
C202
10uF
0.1uF
25V
25V
R210
100K
R248
EN
33K
R204
R208
R1
6.2K
68K
FB
1/16W
1/16W
1%
1%
VREG
C204
100pF
50V
SS
R2
C206
C207
1uF
2200pF
10V
50V
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.
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
PANEL_Vcc
TR_KEC
Q201-*1
2N3906S-RTK
C
E
B
P200
SMAW200-H12S5K(BK)(LTR)
PWR_ON
PDIM#2
1
2
PWM_DIM2
GND
D13.2V
3
4
D13.2V
D13.2V
5
6
A13.2V
A13.2V
7
8
GND
GND
9
10
DRV_ON
PDIM#1
11
12
PWM_DIM
13
+3.3V_Normal
A13.2V
C241
0.1uF
25V
OPT
ZD200
ZD205
2.5V
5.1v
+3.3V_ST
IC201
BD9D321EFJ
[EP]
OPT
ZD201
5V
VIN
SD05
1
8
16V
0.1uF
C209
BOOT
2
7
L202
2uH
SW
3
6
GND
3A
4
5
C210
C211
22uF
22uF
10V
10V
3216
3216
125C
125C
CST Check!!
Vout=0.765*(1+R1/R2)
M13.2V
L203
Q205
UBW2012-121F
SSM3J332R
S
D
Panel_Cgs_0.22uF
OPT
C213
R219
10%
C212
33K
0.22uF
1608
0.1uF
G
25V
25V
Panel_Cgs_0.1uF
R220
C213-*1
120K
10%
0.1uF
1608
50V
C
C
TR_NXP
TR_KEC
B
Q202
B
Q202-*1
PANEL_CTL
MMBT3904(NXP)
2N3904S
E
E
SUB_FET_3.3V_AOS
+3.3V_ST
FET_3.3V_TOSHIBA
Q204
SSM3J332R
PZ1608U121-2R0TF
C215
C214
0.1uF
R221
4.7uF
16V
12K
10V
OPT
R216
10K
R222
1.8K
C
C
R218
TR_NXP
TR_KEC
POWER_ON/OFF
10K
B
Q203
B
Q203-*1
MMBT3904(NXP)
2N3904S
OPT
E
E
R217
10K
+5V_Normal & +1.15V_VDDC
+3.3V_NORMAL
R223
10K
OPT
OPT
C216
R249
4700pF
300K
50V
USB_CTL
USB_OCD
Power_DET
PANEL_VCC
PANEL_VCC
R232
OPT
14K
R224
R225
1%
3.3K
3.3K
R233
C224
5.6K
0.1uF
1%
16V
+3.3V_NORMAL
L204
OPT
C218
ZD202
10uF
5V
6.3V
M13.2V
L205
CB2012PK501T
C219
C220
10uF
10uF
0
25V
25V
R230
+3.3V_ST
OPT
C221
2200pF
50V
R226
SS2
COMP1
OPT
50V
1
18
10K
C222
THERMAL
2200pF
EN1
FB1
25
2
17
EN2
AGND
3
IC202
16
R229
OPT
OPT
91K
ROSC/SYNC
SN1406035RGER
RSET
C217
R250
+3.3V_NORMAL
4
15
4700pF
300K
SW_EN
FB2
50V
5
14
R227
NFAULT
COMP2
6
13
4.7K
OPT
+3.3V_NORMAL
R247
3.3K
R231
0
+5V_NORMAL
+5V_USB
C227
1uF
16V
+13.2V --> 3.56V
+3.3V_ST
+3.3V_ST
R241
100K
OPT
Reset_IC_KEC
R246
R236
IC203
4.7K
0
KIC7529M2
R245
POWER_DET
300
VCC
OUT
3
2
OPT
1
R237
C238
GND
0
0.1uF
POWER_DET_RESET
RESET_IC_DIODES
IC203-*1
APX803E29
VCC
RESET
3
2
1
GND
Vout=0.6(R1/R2)+0.6
+1.15V_VDDC
L206
4.7uH
R1
OPT
OPT
OPT
OPT
C231
C234
R238
C237
C240
ZD204
4.7K
82pF
10uF
ZD203
22uF
22uF
5.1v
50V
6.3V
1%
2.5V
6.3V
6.3V
R2
R239
5.1K
1%
C233
22pF
50V
C232
R240
3300pF
10K
50V
R242
200
1%
R2
R243
5.1K
1%
C230
22pF
50V
R244
39K
C235
47pF
C229
1%
R235
3300pF
50V
20K
50V
+5V_NORMAL
R1
C228
L207
0.047uF
4.7uH
25V
C236
C239
22uF
22uF
16V
16V
3216
3216
85C
85C
Vout=0.6(R1/R2)+0.6
L15_M1L
141020
POWER
2
5
LGE Internal Use Only
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