LG 43LF5400-UB Service Manual page 25

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