LG 32LB560B Service Manual page 25

L14 K-TASK POWER BLOCK
FROM LIPS or POWER B/D
RL_ON_Buffer
+3.5V_ST
MMBT3906(NXP)
Q200
1 3
OPT
R207
R200
33K
RL_ON_Buffer 2
10K
R202
RL_ON 10K
R201
10K
RL_ON_Direct
RL_ON_Direct
R203
0
+3.5V_ST
C200 C202
1uF
10uF
PWR ON
10V L201
10V
CB2012PK501T
3.5V
3.5V
GND
L202
SEMTECH_3.3V_TVS
MLB-201209-0120P-N2 24V
+24V
GND
OPT
C206
C205
12V
0.1uF
4.7uF
50V 12V
50V
GND
L200
MLB-201209-0120P-N2
+12V
OPT
C203 C204
4.7uF 0.1uF
16V 16V
+1.8V_DDR
+3.3V_NORMAL
+1.8V_DDR
IC200
AZ1117EH-ADJTRG1
IN
OUT
R1
C201 R206
ADJ/GND 1%
10uF
1
6.3V R204
2.7K
C207
10uF
6.3V
R2
1%
R205
1.2K
Vout=1.25*(1+R2/R1)
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 ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
PANEL_Vcc
+3.3V_NORMAL
+3.5V_ST
R209
R208
1K
100
P200
C R211
R210
SMAW200-H18S5 10K
INV_CTL
B 10K
E Q201
DRV ON
1 2 MMBT3904(NXP)
PDIM#1
3 4
3.5V
5 6
PDMI#2 PWM_DIM
7 8
24V
9 10
+3.3V_Normal
PWM_DIM2
GND
11 12
12V
13 14
NC
15 16
GND
17 18
19
ZD201
2.5V
+12V
FET_12V_DIODES
L203
Q205
UBW2012-121F
DMP2130L
OPT C210
R215
10uF
C208
10K
16V G
0.1uF
25V
Vgs=8.15V
R214
4.7K
C
B Q203
PANEL_CTL
MMBT3904(NXP)
E
+3.5V_ST
FET_3.3V_DIODES
Q204
DMP2130L
PZ1608U121-2R0TF
C211
C209
0.1uF
R217
4.7uF 16V
12K
10V
Vgs=3.04V
R213
10K
R216
1.8K
C
R212
POWER_ON/OFF 10K
B Q202
MMBT3904(NXP)
E
+5V_USB & MHL W/ OCP
+3.3V_NORMAL
OPT
R218
4.7K
MHL_5V_EN
USB1_CTL
Power_DET
PANEL_VCC
R230
OPT
2.7K
R219 R223
3.3K 3.3K
R229
C222
1.2K
0.1uF
16V
+3.3V_NORMAL
L204
OPT
+1.15V_VDDC
C214 ZD202
10uF 5V
6.3V
+3.5V_ST
OPT OPT
C221 C226
0.1uF 10uF
16V 6.3V
+1.15V_VDDC
OPT
OPT
C220 C224 C225
ZD203 22uF 22uF
0.1uF
2.5V 6.3V 6.3V
16V
+12V
C215 C216
10uF 10uF
16V
16V
Vout=0.8*(1+R1/R2)
R222
100K
OPT
C212
100pF
50V
C218 L205
0.047uF
4.7uH
25V
EN BST
C213
R220 4700pF 1 18
THERMAL
4.7K 50V R1
COMP LX_2
25
2 17
C223
R228
SS LX_1 82pF
OPT 18K
3 16
R221 1% 50V
0
ROSC FB
IC201
4 15
R2
TPS65282REGR
EN_SW2 SW_IN_2
5 14
4A R227
EN_SW1 SW_IN_1 3.3K
6 13 1%
C219
+3.3V_NORMAL
10uF
+5V_USB 16V
R224 AVDD_5V_MHL
5V_HDMI
15K
R226
D200
MBR230LSFT1G 10
30V
OPT
C217
R225
10uF
100K
10V
16K(1.6A)->14K(1.8A)
+3.5V_ST --> 3.375V --> 3.46V
+12V --> 3.58V --> 3.82V (3.68V)
SOC_RESET_+3.5V
R235-*1
+12V +3.5V_ST 100
+3.5V_ST
R234
100K
OPT
R236
RESET_IC_DIODES
R233
4.7K
0
IC204
1%
APX803D29 SOC_RESET_PD_IC
R235
POWER_DET
VCC RESET 300
3 2
1
C232
GND
0.1uF
1%
POWER_DET_RESET
CI_RESET_IC_ROHM
IC204-*1
BD48K28G
VDD VOUT
3 2
1
GND
IC203 TPS5432DDAR
L206 [EP]GND
CB2012PK501T
C234
0.01uF
BOOT SS
C229 C230 50V R238
1 8
10uF 0.1uF 10K
10V 16V
C237
VIN EN
2 7
1000pF
C231
L207
50V
0.1uF
3.6uH
PH COMP
16V
3 6
3A C236
0.33uF
R237
16V
GND VSENSE 2.7K
4 5
1%
C233 C235
R232
0.039uF 390pF
C228 20K
R1 50V 50V
270pF 1%
50V
R231 R2
47K
1%
Vout=0.808*(1+R1/R2)
CI_GateIC_Toshiba
IC202-*1
TC7SZ08FU_TOSHIBA
IN_B VCC
1 5
IN_A
2
GND OUT_Y
3 4
+5V_NORMAL
C227
+3.3V_NORMAL
22uF GateIC_STC
16V
IC202
74LVC1G08GW
B VCC
1 5
MHL_CD_SENSE
A
2
MHL_OCP_EN
GND Y
3 4
MHL_5V_EN
L14_NON_OS 13/08/13
POWER 2 of 6
LGE Internal Use Only