LG 27GL850 Service Manual page 30

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.
R714
33
C709
0.1uF
16V
R722
200
1%
C705
1uF
25V
Q700
AOD2922
G
D
S
C713
0.1uF
16V
C716
1uF
50V
R716
100K
C704
4700pF
50V
R708
220K
1%
+19V
C703
0.1uF
50V
C710
4.7uF
25V
R703
12K
1/8W
1%
34GL750
C702
0.1uF
16V
R705
15K
R720
75K
1%
R718
1K
C714
10uF
10V
R701
470K
1/16W
1%
R723
100
1%
C719
22uF
63V
R706
0
5V_ST_ON
+5V_STANDBY
R700
100
R726
100K
C715
4.7uF
25V
+19V
R713
0
NO_MOTION
R702
0
R725
100K
R719
0
MOTION
C700
1uF
16V
OPT
D700
100V
BR210
+19V
R717
1K
C712
4.7uF
25V
+19V
L702
33uH
IC700
MP3378E
MP3378E_OLD
3
ISET
2
OSC
4
ADIM
1
GND1
6
LED3
5
LED4
7
LED2
8
LED1
9
OVP
10
NC_1
11
NC_2
12
FB
13
EN2
14
VCC2
15
VIN2
16
SW
17
GND2_1
18
GND2_2
19
AGND
20
BST
21
SYNC
22
ISENSE
23
GATE
24
VIN1
25
VCC1
26
COMP
27
EN1
28
PWM
[EP]GND
WLED_ADIM
ZD700
5.6V
OPT
R711
100
WLED_ENABLE
R721
14K
1%
R710
22K
R724
0.1
1W
1%
WLED_PDIM
R715
10K
C717
1uF
50V
C701
1000pF
50V
R712
270
1%
C707
4.7uF
25V
C706
0.1uF
50V
C708
0.47uF
50V
C711
1uF
25V
L700
BLM18PG121SN1D
C718
10uF
10V
R704
100K
OPT
L701
10uH
C720
22uF
63V
OPT
R707
2.7K
1%
R748
1K
C735
10uF
10V
R731
470K
1/16W
1%
R753
100
1%
C740
22uF
63V
R736
0 R730
100
R756
100K
C736
4.7uF
25V
+19V
R743
0
NO_MOTION
R755
100K
R749
0
MOTION
C721
1uF
16V
OPT
C741
22uF
63V
OPT
R737
2.7K
1%
R739-*1
2.7K
1%
34GL750
D701
100V
BR210
+19V
R747
1K
C733
4.7uF
25V
+19V
L705
33uH
IC701
MP3378E
MP3378E_OLD
3
ISET
2
OSC
4
ADIM
1
GND1
6
LED3
5
LED4
7
LED2
8
LED1
9
OVP
10
NC_1
11
NC_2
12
FB
13
EN2
14
VCC2
15
VIN2
16
SW
17
GND2_1
18
GND2_2
19
AGND
20
BST
21
SYNC
22
ISENSE
23
GATE
24
VIN1
25
VCC1
26
COMP
27
EN1
28
PWM
[EP]GND
WLED_ADIM
ZD701
5.6V
R741
100
WLED_ENABLE
R751
5.6K
1%
R740
51K
R754
0.1
1W
1%
WLED_PDIM
R745
10K
C738
1uF
50V
C722
1000pF
50V
R742
270
1%
C728
4.7uF
25V
C727
0.1uF
50V
C729
0.47uF
50V
C732
1uF
25V
R744
33
L703
BLM18PG121SN1D
C730
0.1uF
16V
C739
10uF
10V
R752
200
1%
R734
470K
C726
1uF
25V
L704
10uH
Q701
AOD2922
G
D
S
C734
0.1uF
16V
C737
1uF
50V
R746
100K
C725
4700pF
50V
R738
220K
1%
+19V
C724
0.1uF
50V
C731
4.7uF
25V
R733
12K
1/8W
1%
C723
0.1uF
16V
R735
75K
R750
18K
1%
+3.3V_NORMAL
R759
0
OPT
R760
0
OPT
R762
0
OPT
R764
0
OPT
R768
0
OPT
R769
0
OPT
C742
10uF
10V
OPT
C743
10uF
10V
OPT
IC700-*1
MP3378E mask revison
MP3378E_NEW
3
ISET
2
OSC
4
ADIM
1
GND1
6
LED3
5
LED4
7
LED2
8
LED1
9
OVP
10
NC_1
11
NC_2
12
FB
13
EN2
14
VCC2
15
VIN2
16
SW
17
GND2_1
18
GND2_2
19
AGND
20
BST
21
SYNC
22
ISENSE
23
GATE
24
VIN1
25
VCC1
26
COMP
27
EN1
28
PWM
[EP]GND
IC701-*1
MP3378E mask revison
MP3378E_NEW
3
ISET
2
OSC
4
ADIM
1
GND1
6
LED3
5
LED4
7
LED2
8
LED1
9
OVP
10
NC_1
11
NC_2
12
FB
13
EN2
14
VCC2
15
VIN2
16
SW
17
GND2_1
18
GND2_2
19
AGND
20
BST
21
SYNC
22
ISENSE
23
GATE
24
VIN1
25
VCC1
26
COMP
27
EN1
28
PWM
[EP]GND
R709-*1
2.7K
1%
34GL740
R739
2.4K
1%
27GL850
R703-*1
10K
1/10W
1%
27GL850
R733-*1
10K
1/10W
1%
27GL850
R709
2.4K
1/16W
1%
27GL850
8
32GK850F
LED Driver IC
2017.04.13
7
High : 1.5V
Idc : 3.4A
Setting: 5.08V(=0.8(1+75K/14K)
LED Driver
Curent ==> X5R Type.
OCP = 3A
High : 1.5V
Idc : 3.4A
Setting: 3.37V(=0.8(1+18K/5.6K)
OCP = 3A
51k => 21k for Phase Margin. (11.10 by MPS Report)