LG 22LD310 Service Manual page 20

Power
P701
FM20020-24
READY
R702 NC Power ON
1 2
0
GND GND
3 4
GND GND
5 6
5.2V 5.2V
P_5V 7 8
5.2V 5.2V
9 10
GND GND
11
12
12V 12V
13
P_12V_SMALL_15V 14
GND GND
15
16
24V 24V
17
P_24V_SMALL_15V 18
NC Inverter ON
19
20
A.Dim Error Out
21
22
NC PWM Dim
23
24
25
26_32inch
Non Sharp32
R722 R704
0
READY
R725
R706
I_DIM
0
10K
C706
2.2uF
16V
DC_DIM
R709-*1
NON_CMO32
1K R705
OPC_DISABLE PWM_DIM
R715 R709
E_DIM
1K 100
OPC_DISABLE
READY
R716
C701
6.2K
2.2uF
16V
OPC_ENABLE
R714
OPC_OUT
1K
OPC_ENABLE
R717
6.2K
L703
P_5V
120-ohm
C705 C709 C711
10uF 0.01uF 0.01uF
16V 50V 50V
AP2121N-3.3TRE1
IC701
R718
VIN VOUT
ST_5V 3 2
MAX 300mA
0
READY
1 C710 C713
C714
10uF 0.01uF
GND 1uF
10V 25V
25V
Power indicator
ST_5V
5V_M
R701 R703
10K 1.2K
SAM2333
LD701
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 © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
P_5V
ST_3.3V
26_32inch
R719
2.2K
26_32inch
R758
26_32inch
2SC3875S 10K
26_32inch
3 Q702
R763
RL_ON
2
1 47K
READY
R762
10K
P_5V
P_12V_SMALL_15V
19_22inch
R723
0
P_24V_SMALL_15V
5V_M
3.3V_M
R712
3K
R707
R755
10K 2SC3875S
0
Q701
R713 3
DISP_EN
2
1
10K
Sharp32
R721
0
0
0
Non Sharp32
CMO32
R708 R711 R724
0 4.7K 0
19_22inch/Sharp32 Non Sharp32
R710 C702
0 0.47uF
25V
L702
ST_5V P_24V_SMALL_15V
500
C703 C707 C712
68uF 0.01uF
0.1uF
35V 50V 50V
L701
ST_3.3V P_12V_SMALL_15V
120-ohm
C704 C708
47uF 0.01uF
25V
50V
L710 26_32inch
120-ohm
READY
C754
10uF
16V
19_22inch
AS7812ADTR-E1
IC707
19_22inch
R760
INPUT 3 OUTPUT
1
0
2 19_22inch
C752
GND 1uF
25V
STAND_BY VOLTAGE
5V_M -> 1.2V_VDDC_M8, 3.3V_M, 1.8V_M
19_22inch
P703
R726
5V_M
SMAW200-11 0
C715
10uF
10V
15V
1
15V
2
GND
3
GND
4
R738
0
5V
5
5V
6
NC
7
NC
8
MULTI VOLTAGE
Inverter_ON
**Switch 12V:P12V, P5V -> 5V_12V_LCD
9
PWM_Dim
10 26_32inch
L706
P_12V_SMALL_15V
120-ohm
A.Dim
11
19_22inch/Sharp32
L705
P_5V
120-ohm
ST_3.3V
R756
10K
R729
PANEL_ON
10K
READY
R727
10K
P_5V
PANEL_STATUS
POWER_SW
TUNER VOLTAGE
**DC-DC CONVERTER
12V->5V_TUNER
24V_15V_NTP
12V_AUDIO
VIF_12V
19_22inch CIC21J501NE
R761 L704
0
P_12V_SMALL_15V
500
19_22inch
C751
0.1uF
50V
BD9130EFJ-E2
IC702
ADJ EN R740
1 8
10K
VCC PVCC
2 7
C716
10uF
L707
ITH SW 10V
3 6
2.2uH R2
READY READY
C726 C727 C728 R744
C747
R730 R739 2K
GND PGND 0.1uF 10uF 10uF
1uF
12K 3.3
4 5 16V 10V 10V
25V
READY
MAX 2A
R745
C717 C725
3.3K
560pF 2200pF
50V 50V R1
V0 = 0.8*(1+(R2/R1))
R753
0
IC704
AZ1085S-3.3TR/E1
OUT:3.3V
INPUT 2 OUTPUT
3 MAX 3A
1
C723 C729 C733
0.1uF 100uF 10uF
ADJ/GND
10V
50V 16V
**Switch 5V:P5V -> 5V_M
Q705
SI4925BDY
EBK32753101
19_22inch
R733-*1
10K MLB-201209-0120P-N2
S1 8 D1_2
1
C721
120-ohm
READY R732 1uF C731
C718 33K 25V G1 7 D1_1 0.1uF
2
68uF 50V
35V
26_32inch
R733 S2 D2_2
3 6
33K
R765
C RT1C3904-T112 C719
10K 1uF
Q703
R764 G2 D2_1
B 25V
4 5
C 10K
E
B
Q706
E RT1C3904-T112
R734
22K
R735
1.6K
C
RT1C3904-T112
Q704
R728
B
10K
E
V0 = 0.8*(1+(R1/R2))
26_32inch
R741
10K
READY
MP2212DN
C753
R736 IC703
100pF R1
43K
50V
26_32inch
FB 1 8 EN/SYNC R743
READY
C724 2K
R737 MAX 3A
R2
560pF 5.6K
19_22inch 50V
2 7 SW_2
D701 50V GND
26_32inch
R731
3 6 SW_1
IN
0
C720 C722
10uF
10uF 4 5 VCC
BS
25V 25V
C730
1uF
C739
25V
0.47uF
50V
R742
0
1.2V_VDDC_M8
OUT:1.27V
3.3V_M
AP1117EG-13
IC705
NTP,AUDIO DSP
IN OUT OUT:1.85V
3 2
1.8V_M
MAX 1A
READY
C735 1 C742 C744
C746
0.1uF R1 R750 10uF 0.1uF
ADJ/GND 1uF
50V 120 10V 50V
25V
R751
R2
56
V0 = 1.25*(1+(R2/R1))
L708
5V_12V_LCD
C745 C748
PANEL
R747 R749 R752
100uF 0.01uF
4.7K 4.7K 4.7K
16V 50V
5V_M
C734 C737
10uF 0.01uF
10V 50V
IC706
AP1117EG-13
IN 3 2 OUT
READY
C740 C741 C743 1
R759 C749
10uF 10uF 0.1uF
ADJ/GND 110
0.1uF
16V 16V 16V
16V
OUT:6.8V
R757
330
C732
100uF
16V
5V_M
19_22inch
R748
10
19_22inch
C738
0.1uF
50V
5V_M
L709
3.6uH
R746
10
C736
0.1uF
50V
EAX61462901
2009/08/20
POWER 7 7
LGE Internal Use Only
5V_TUNER