Haier LT26K1, Service Manual

Page: 59 / 177

59
10. Schematic Diagram
10.1 Main Board
715G3462 1
1) Power-1
DV33
1%
+ C107
470uF 10V
+ C112
330UF 16V
TP
1
03
1
DV33
+24V 13
DV33 2,4,5,7,8,11,12,13,14
C114
NC/4.7UF 10V
C128
33
0P 5
0
V
FB100 220R/2000mA
1 2
+5V1_TUN
BRIGHT_ADJ
R130
-5% 1/10W
+5V1_TUN 2
R105
-5% 1/4W
C106
100N 16V
DV18_DDR stabilizer
m o d i f y b y J o h n n y C h e c k b y C H ( T P V )
BRIGHT_ADJ 14
C130 1uF/16V
R125
0R
05
1/
16
W
TP
1
00
1
D101
SS2P4
1
2
0.6 x (1+2.44K/1.2K) = 1.82V
R115
2K
2 1/
10
W
1
%
+5V1_TUN
C104
33N 16V
C105
100N 16V
+12V
+24V
STANDBY
DV18_DDR
GND 2,3,4,5,6,7,8,9,10,11,12,13,14
STANDBY
DV18_DDR
Q104 SI5441DC
1
2
3
4
5
6
7
8
D
D
D
G S
D
D
D
R122
1K2 1/10W 1%
STAND_BY:
Normal: Low
Stand_by:
High
DV18_DDR
U103
L5947
1
2
3
4 5
6
7
8
9
Vout
SYNC
INH
COMP FB
FSW
GND
Vcc
TH
1
INVERTER_ON_OFF 14
C102
33N 16V
m o d i f y b y B e n ( S A C )
m o d i f y b y M o r r i s ( T P V )
TP
1
06
1
m o d i f y b y S t e p h e n c h e c k b y C H ( T P V )
5V_SW ON/OFF):
Norm al: High
Stand_By: Low
+5V_STB
+5V_SW
OPWRSB 5
R131 1K 1/10W 1%
C108
10U 16V
INVERTER_ON_OFF:
Normal: High
Stand_By: Low
DV11
R117
1K2 1/10W 1%
DC POWER INPUT
DV33SB 2,4,5,7,10,12,13,14
STAND_BY
R154
N
C
/1
K
1/
10
W
5
%
+5V1) TO +5V_SW BY OPWRSB
SMD/0402
USE 330uF 16V GF
+5V_STB
OPWRSB
C121
100N 16V
m o d i f y b y E R I C ( T P V )
EU MT5362 - 4 LAYERS
SMD/0402
MEM_VREF 6
TP
1
02
1
C124
100N 16V
DV33SB
R132
1K 1/10W 1%
U104
L5945
1
2
3
4 5
6
7
8
9
Vout
SYNC
INH
COMP FB
FSW
GND
Vcc
TH
1
SMD/0402
C129
33
0P 5
0
V
SMD/0402
C119
1UF 6V3
R126
1K 1/16W 5%
+
C101
330uF 10V
1%
Q106
BC847C
+ C111
330UF 16V
1%
+5V_SW
STAND_BY 13
MEM_VREF
STB_PWR5V
+5V_SW 2,5,8,9,10,11,12,13,14
MEM_VREF
R107 -5% 1/10W
FB101 220R/2000mA
1 2
BRIGHT_ADJ
SM
D
/04
02
OPWRSB
R104
3.
9K
O
H
M
+
-5
%
1
/1
0
W
BRIGHT_ADJ:
Normal:Max:+3V3, Min:0V
Stand_By:0V
R120 0 OHM +-5% 1/8W
C120
100N 16V
DV11 4
GND
+5V_SW
R144
1K 1/16W 5%
L102 15uH
+5V_STB 2,5,13
TP
1
04
1
+24V
R123
1K
1 1/
10
W
1
%
SMD/0402
USE 330uF 16V GF
m o d i f y b y V i c t o r C h e c k b y C H ( T P V )
+5V_STB
STB_PWR5V
D100
SS3P4
1
2
C132
10U 16V
1%
INVERTER_ON_OFF
+
C110
100uF 10V
STANDBY:
Normal: High
Stand_by: Low
m o d i f y b y J A C K Y L i n ( T P V )
R124
300OHM1/10W
Q101
BC847C
3
2
1
TP
1
05
1
+12V
m o d i f y b y A l a n C h e c k b y C H ( T P V )
STAND_BY
INVERTER_ON_OFF
m o d i f y b y F Q C h e c k b y C H ( T P V )
R119
-5% 1/10W
+5V_SW
DV18_DDR 2,6
DV11
TP
1
01
1
CN100
CONN
1
2
3
4
5
6
7
8
9
10
11
12
R113 100R 1/16W 5%
R106
3.
9K
O
H
M
+
-5
%
1
/1
0
W
From +5V_SW to +1V8/+1V1
+12V 2,9,13
L101 15uH
0.6 x (1+1.1K/1.2K) = 1.15V