LG 32LV355C Service Manual page 25

RS232C
+3.5V_ST
C1101 0 . 3 3 u F
IC1101
C1106
MAX3232CDR
0 . 1 u F
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
( F o r E x t e r n a l p o w e r )
PSU_POWER_OUT
R52
100K
PSU_POWER_OUT 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 ]
C51
50V 0 . 1 u F
IC50
MP4460DQ-LF-Z EP_GND
MBRA340T3G
c l o s e t o p i n
SW_1 BST
1 10
PSU_POWER_OUT
SW_2 VIN_2
2 9
D50
EN VIN_1
3 8
PSU_POWER_OUT
PSU_POWER_OUT COMP FREQ
4 $0.21 7
C50
FB GND
150pF 5 6
50V
PSU_POWER_OUT
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 © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
IR_OUT
R35
0
IR_OUT
R1123
100
JP1121
R1124
100
JP1122
D1107 D1108
CDS3C30GTH CDS3C30GTH
30V 30V
OPT OPT
EXT_12V
EXT_5V
S7_NEC_RXD
S7_NEC_TXD
5V/12V EXT PowerOut
+12V/+15V
L51
CB3216PA501E
LIPS_POWER_OUT
+24V
PSU_POWER_OUT +12V
PSU_POWER_OUT
C54 C55
3 . 3 u F 0 . 1 u F
50V
50V C56
R53
0 . 4 7 u F
200K
25V
PSU_POWER_OUT
1/8W PSU_POWER_OUT
POWER_OUT
R56 R57
1%PSU_POWER_OUT
270K 10K
1/16W 1/16W
1% 1%
PSU_POWER_OUT
C52
C53
22uF
0 . 1 u F
25V
50V
10
5
9
4
8
3
7
2
6
1
SPG09-DB-009
JK1101
+12V
R58
100K
OPT
IC51
MP2305DS
POWER_OUT
C59
EXT12V_CTRL
0 . 1 u F
BS SS 50V
POWER_OUT
1 8
POWER_OUT
C57
POWER_OUT
0 . 0 1 u F R62
50V IN EN 1K
2 7
EXT5V_CTRL
C58 EXT_5V
R61
2700pF POWER_OUT
SW COMP 10K
3 6
50V L53
POWER_OUT
R60 CB3216PA501E
POWER_OUT
GND FB
56K
4 5
POWER_OUT
R59
C60
12.4K
22uF
POWER_OUT 16V
L52
POWER_OUT
22UH
POWER_OUT
EXT_PWR_DET
POWER_OUT
R65
43
IC52
MP5000DQ
POWER_OUT
GND SOURCE_5 EXT_12V
1 10
C61 POWER_OUT
470pF
DV/DT SOURCE_4
50V
2 9 POWER_OUT
L54
R63 CB3216PA501E
1K ENABLE/FAULT SOURCE_3
3 8
POWER_OUT
I-LIMIT SOURCE_2 C64 C65
4 7 0 . 1 u F
22uF
50V
16V
POWER_OUT POWER_OUT
NC SOURCE_1
5 6
11
VCC
+12V
POWER_OUT
C62 C63
D51
1uF 22uF
POWER_OUT
+3.5V_ST 16V 16V
POWER_OUT
+3.5V_ST
R64
R68
4.7K
10K
POWER_OUT R67
POWER_OUT
4.7K
C POWER_OUT
R66
1K
Q51 B
2SC3875S(ALY)
POWER_OUT
POWER_OUT Q50
E
2SC3875S(ALY)
POWER_OUT
RS232C_9PIN
GP2R 20101023
10
LGE Internal Use Only