Power - LG 22LK230 Service Manual

Power

5V_M
ST_3.3V 3.3V_M
READY
R754 R755
10K 10K 2SC3875S
Q701
R713
INV_ON
2
10K
READY
R725
R706
A_DIM
0
10K
C706
2.2uF
16V
DC_DIM
R709-*1
1K
PWM_DIM
R715 R709
P_DIM
1K 100
READY
R716
C701
6.2K
2.2uF
16V
L703
P_5V
120-ohm
C705 C709 C711
10uF 0.01uF 0.01uF
16V 50V 50V
AP2121N-3.3TRE1
IC701
VIN VOUT
3 2
ST_5V
MAX 300mA
R745 READY
1
1 C714
GND 1uF
25V
C710 C713
10uF 0.01uF
10V 25V
Power indicator
ST_5V
5V_M
FOR DEBUG FOR DEBUG
R701 R703
10K 1.2K
FOR DEBUG
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 © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
P703
SMAW200-12
16.5V
1
16.5V
P_16.5V
2
GND
3
GND
4
5V
5
P_5V
5V
6
R712
3K
GND
7
3
OLP OLP
1 8
Inverter_ON
9
PWM_Dim
10
A.Dim
11
NC
12
R711
PANEL_STATUS
4.7K
C702
0.47uF
25V
L702
ST_5V P_16.5V
500
C703 C707 C712
68uF 0.01uF 0.1uF
35V 50V
50V
L701
ST_3.3V P_16.5V
120-ohm
C704 C708
47uF 0.01uF
25V 50V
STAND_BY VOLTAGE
5V_M -> 1.2V_VDDC_M8, 3.3V_M
5V_M
C771
10uF
10V
MULTI VOLTAGE
**Switch 12V:P12V, P5V -> 5V_12V_LCD
L705
P_5V
120-ohm
ST_3.3V
R756
10K
R729 B
PANEL_ON
10K
READY
R727
10K
P_5V
POWER_SW
TUNER VOLTAGE
**DC-DC CONVERTER
16.5V->5V_TUNER
16.5V_SAMP
16.5V_AOUT
P_16.5V
10K
C773
R780
0.1uF C774
0.1uF
16V
16V
L711
3.6uH
VIN_1 PH_3
1 12
THERMAL LQH88PN3R6N38K
VIN_2 PH_2
2 17 11
C772
C777 C778
0.1uF GND_1 PH_1
3 IC702 10 22uF 22uF
16V
SN1007054RTER C775 10V 10V
GND_2 SS
4 9
0.01uF
50V
50V
100pF
R1 C779
R781
1/10W 330K 5%
C776
R782
3300pF
7.5K
1/16W 5%
50V
R2
3A
R785
Vout=0.8*(1+R1/R2)
75K
1/8W
1%
IC704
AZ1085S-3.3TR/E1
OUT:3.3V
INPUT 3 2 OUTPUT
MAX 3A
1
C723 C729 1
0.1uF ADJ/GND 100uF R743
50V 16V
C733
10uF
10V
**Switch 5V:P5V -> 5V_M
Q705
AO4813
EBK60706901
MLB-201209-0120P-N2
S2 D2_2
L708
1 8
C721
120-ohm
READY R732 1uF C731
G2 7 D2_1
C718 33K 25V 0.1uF
2
47uF 50V
16V
R733 S1 6 D1_2
10K 3
R765 C719
C MMBT3904(NXP)
10K 1uF
Q703
R764 B G1 5 D1_1
25V
4
10K
C
E
Q706
E MMBT3904(NXP)
R734
C734
22K
10uF
10V
R735
1.6K
C
MMBT3904(NXP)
Q704
R728 B
10K
E
16.5V TO 5V DCDC CONVERTER
16V
L709
0.1uF IC703
C763 6.8uH
5V_M TPS54331D
R736 BOOT PH C764 C765 C766
1 8
4.7K 22uF 0.1uF
47uF
16V 10V 50V
VIN GND
2 7
C760
C761
10uF EN COMP
0.1uF
3 6
25V 50V
C767 C768
SS/TR VSENSE
4 5 47pF 4700pF
50V 50V
C762 R742
27K
0.022uF
16V
EAX64207701
1.2V_VDDC_M8
OUT:1.27V
C780
0.1uF
16V
3.3V_M
5V_LCD
C745 C748
PANEL
R747 R749 R752
100uF 0.01uF
4.7K 4.7K 4.7K
16V 50V
5V_M
C737
0.01uF
50V
READY
IC706
AP1117EG-13
IN 2 OUT
3
5V_TUNER
READY READY
READY READY READY
C740 C741 1
R759
C743 C750
10uF 10uF READY
ADJ/GND 110
0.1uF 47uF
16V 16V R740
16V
16V 1
READY
READY
R757
C749
330
0.1uF
16V
DCDC_5V_TUNER
L706
120-ohm
READY
C769
0.1uF
50V
PARK
2011/5/6
POWER
7 7
LGE Internal Use Only