LG 32LT670H-UA Service Manual page 31

RS232C
C1101 0 . 3 3 u F
IC1101
MAX3232CDR
C1+ VCC
1 16
C1102
0 . 1 u F
V+ GND
2 15
C1103
0 . 1 u F
C1- DOUT1
3 14
C2+ RIN1
4 13
C1104
0 . 1 u F
C2- ROUT1
5 12
V- DIN1
6 11
C1105
0 . 1 u F
DOUT2 DIN2
7 10
RIN2 ROUT2
8 9
EAN41348201
DC DC CONVERTER +12V_ONLY PSU
( F o r E x t e r n a l p o w e r )
PSU_POWER_OUT
PSU_POWER_OUT
C51
MP4460DQ-LF-Z
MBRA340T3G
c l o s e t o p i n
SW_1
1
PSU_POWER_OUT
SW_2
2
D50
EN
3
PSU_POWER_OUT
COMP
PSU_POWER_OUT
4
C50
FB
150pF 5
50V
L50
22UH
PSU_POWER_OUT
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.
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
IR_OUT
R1123
100
R1124
+3.5V_ST 100
D1107 D1108
CDS3C30GTH CDS3C30GTH
30V 30V
OPT OPT
EXT_12V
C1106
0 . 1 u F
+3.5V_ST
R52
100K
S w i t c h i n g n o i s e r e d u c i n g [ M P S r e c o m m e n d ]
50V 0 . 1 u F
+24V
IC50
EP_GND
BST
10
PSU_POWER_OUT +12V
VIN_2
9
PSU_POWER_OUT
C54 C55
VIN_1
3 . 3 u F 0 . 1 u F
8
50V 50V
R53
FREQ 200K
$0.21
7
PSU_POWER_OUT
PSU_POWER_OUT
1/8W
R56 R57
GND 1%PSU_POWER_OUT
6 270K 10K
1/16W 1/16W
1% 1%
PSU_POWER_OUT
PSU_POWER_OUT
C52
C53
22uF
0 . 1 u F
25V
50V
10
5
9
4
8
JP1121
3
7
JP1122
2
6
1
SPG09-DB-009
JK1101
D1100
R1100
BAP70-02
1K
50V
PM_RXD
PM_TXD
12V EXT PowerOut
POWER_OUT
R65
43
IC52
MP5000DQ
POWER_OUT GND SOURCE_5
1 10
C61 POWER_OUT
470pF
DV/DT SOURCE_4
50V
2 9
R63
ENABLE/FAULT SOURCE_3
1K
3 8
EXT12V_CTRL
POWER_OUT
I-LIMIT SOURCE_2
4 7
NC SOURCE_1
5 6
11
+12V
VCC
CB3216PA501E
LIPS_POWER_OUT
POWER_OUT
C62 C63
1uF 22uF
+3.5V_ST 16V 16V
POWER_OUT
R64
4.7K
POWER_OUT
EXT_PWR_DET
C
R66
1K
Q51 B
2SC3875S(ALY)
POWER_OUT
POWER_OUT
E
EXT_12V
POWER_OUT
L54
CB3216PA501E
C64 C65
0 . 1 u F
22uF
50V
16V
POWER_OUT POWER_OUT
+12V/+15V
L51
+3.5V_ST
R68
10K
R67
POWER_OUT
4.7K
POWER_OUT
Q50
2SC3875S(ALY)
POWER_OUT
GP3_S7LR 20110324
RS232C_9PIN 10
LGE Internal Use Only