Schematic Diagram; Main Board - Haier LT42M1CF Service Manual

42"LCD TV

10. Schematic Diagram

10.1 Main Board

EU OTS MT533X - 4 LAYERS
BRIGHT_ADJ:
Normal:Max:+3V3, Min:0V
DC POWER INPUT Stand_By:0V
INVERTER_ON_OFF:
Normal: High
Stand_By: Low
CONN
12 INVERTER_ON_OFF
11 BRIGHT_ADJ
10
9
8
7
6
5
4
3
2 STB_PWR5V
1
CN100
0.6 x (1+2.44K/1.2K) = 1.82V
15uH L101
DV18_DDR
D101
C112 +
SS2P4
330uF 16V
C131
NC/22N 16V
USE 330uF 16V GF
R137
R115
1%
NC/1K 1/10W 5%
R117
1.2KOHM +-1% 1/10W
1%
OPWRSB(+1V8):
Norm al: High
Stand_By: Low
OFF: Low
STB_PWR5V
FB100
1
FB101
1
STANDBY:
Normal: High
Stand_by: Low
DV33 DV33SB
+12V
R144 R129
1K 1/16W 5% NC/2K2 1/16W 5%
SMD/0402 SMD/0402 SMD/0402
R146 NC/100R 1/16W 5% CEC_PWRSB
+24V
SMD/0402 STANDBY
R113 100R 1/16W 5% STANDBY
SMD/0402 Q106 R126
R142 NC/100R 1/16W 5% OPWRSB BC847C
C124
100N 16V
SMD/0402
C108 C132
10U 16V 10U 16V
U104 U103
L5985 L5985
1 8 8 1
Vout Vcc Vcc Vout
2 7 7 2
SY NC GND GND SY NC
3 6 6 3
INH FSW FSW INH
4 5 5 4
COMP FB FB COMP
R104 C129
C102
33N 16V
Q108 Q109
R127 R128
OPWRSB OPWRSB
10K 1/10W 5% 10K 1/10W 5%
From +5V_SW to +1V8/+1V1 By OPWRSB
+5V_STB
220R/2000mA
2
220R/2000mA
2 + C106
C107
100N 16V
470uF/16V
OPWRSB(+5V_SW ON/OFF):
Norm al: High
Stand_By: Low
+5V_STB +5V_TunerB+
R149
IF 5V HAVE DIP
0R05 1/4W
+5V_SW +5V1_TUN
R105
IF 5V NO DIP OPWRSB
1K 1/10W 5%
NC/0R05 1/4W
R147
CEC_PWRSB
NC/10K 1/16W 5%
1K 1/16W 5% STAND_BY
SMD/0402
STAND_BY:(OPCTRL3) +5V_STB(+5V1) TO +5V_SW BY OPWRSB
Normal: Low
Stand_by: High
R143
+12V
NC/0R05 1/4W
R150
+5V_SW
0R05 1/4W
+
C110
220uF 16V
0.6 x (1+1.1K/1.2K) = 1.15V
+5V_TunerB+
L102 15uH
DV11
D100
+ C111
SS2P4
330uF 16V
C130
NC/22N 16V
C128
R106
USE 330uF 16V GF
R116
C104
NC/1K 1/10W 5%
33N 16V
1%
STANDBY
R122
1.2KOHM +-1% 1/10W
1% R100
22K 1/10W
STANDBY:
Normal: High
Stand_by: Low
+5V_STB TO +5V1_TUN
OPWRSB(+1V1):
FOR IF HAVE 5V DIP
Norm al: High
Stand_By: Low
OFF: Low
42
Haier LT42M1CFA&LT42M1CF
+5V_STB +5V_SW
3,8,11,13,14,15,16,17,18
Q104 SI5441DC
8 1
D D
7 2
D D
6 3
D D
5 4
S G
C105 +
100N 16V C101
100uF 16V
3,5,6,7,10,11,16,17,18
R130
5K1 1/10W
R107
2 Q101 C114
BC847C 4.7UF 10V
C135 C121
3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18
R145
SMD/0402 6,7,10,12,16,17,18
+3V3SB
+3.3V for 538X MCU
R111
0 OHM +-5% 1/8W
Q105
6
CEC_PWR(DV33SB ON/OFF):
D
5
Norm al: Low
D
4
S
Stand_By: High
NC/SI3441BDV
C116
NC/100N 16V
R141
CEC_PWRSB
NC/5K1 1/10W
2 Q102
NC/MUN2211TIG
CEC_PWR
+3V3SB TO DV33SB BY CEC_PWR
+5V1_TUN
R120 NC/0R05 1/4W
VTT
6 1
D D
5 2
D D
4 3 C118
S G
100N 16V
Q103
SI3441BDV
R102 DV18_DDR
R131 NC/75R 1/10W 1%
5K1 1/10W
MEM_VREF
R132
R103 NC/75R 1/10W 1% C119 C120
100N 16V 10U 10V
22K 1/10W
R101
2 Q100 C127
BC847C 4.7UF 10V
22K 1/10W
C126 DV18_DDR stabilizer
100N 16V
The item of this page start from "100"
T P V ( Top Victory Electronics Co . , Ltd. )
T2913-1-Haier42
絬 隔 瓜 絪 腹
02. POWER-1
Key Component
Friday , April 11, 2008
Date
CN100 B1 C101 B9
C102 G2 C103 D10
C104 G5 C105 B8
C106 B5 C107 B5
C108 F3 C109 G4
C110 E6 C111 F6
C112 F1 C114 B8
C116 D9 C117 E10
C118 F9 C119 G9
C120 G9 C121 C8
C123 G10 C124 C4
+24V
C125 G3 C126 G8
3,7,17 +24V
+12V
3,17 +12V
C127 G8 C128 F5
+5V_STB
3,10,12 +5V_STB
+5V_SW
+5V_SW C129 F2 C130 F6
+5V1_TUN
3 +5V1_TUN
DV18_DDR C131 F1 C132 F4
6,9 DV18_DDR
DV11
6 DV11
OPWRSB C135 C8 D100 F5
7 OPWRSB
D101 F2 FB100 A4
STAND_BY
7 STAND_BY
BRIGHT_ADJ FB101 B4 L101 F2
18 BRIGHT_ADJ
INVERTER_ON_OFF
18 INVERTER_ON_OFF L102 F5 Q100 G8
DV33
Q101 B8 Q102 E9
DV33
Q103 F7 Q104 B8
+3V3SB
3,12 +3V3SB
Q105 D10 Q106 C4
CEC_PWR
12 CEC_PWR
Q107 E8 Q108 G3
Q109 G4 R100 G7
MEM_VREF
9 MEM_VREF
VTT
R101 G7 R102 F8
9 VTT
R103 G7 R104 F2
GND
GND
R105 B5 R106 F5
R107 B7 R111 D9
DV33SB
DV33SB R113 C2 R114 F10
R115 F1 R116 F6
R117 G1 R119 B8
R120 F7 R122 G5
R123 F5 R124 F1
R125 F5 R126 C4
R127 G3 R128 G4
R129 B4 R130 B8
R131 F9 R132 F9
R135 F4 R136 F3
R137 F1 R138 D9
W CEC W/O CEC
R139 E9 R140 D9
DV33SB R141 D9 R142 C2
R111 NC Yes
R143 E6 R144 B4
C103 NC Yes R145 C7 R146 C2
R147 C7 R149 B5
Q105 Yes NC
R150 E6 TP100 B1
1
D
TP101 B1 TP102 B1
2
D
3 R139 Yes NC
TP103 B1 TP104 B1
G
TP105 B1 TP106 B1
+ R138 Yes NC
U102 F10 U103 F4
C103
100uF 16V
SMD R140 Yes NC
R141 Yes NC
C116 Yes NC
C117
NC/10uF/10V C117 Yes NC
Q102 Yes NC
Q107 Yes NC
R145 Yes NC
R146 Yes NC
DV18_DDR
R114 4K7 1/10W
1 8
GND VTT
2 7
SD PVIN
3 6
VSENSE AVIN
4 5
VREF VDDQ
U102
LP2996MRX C123
100N 16V
OEM MODEL Haier 42" MAIN BOARD Size Custom
TPV MODEL E428M2NBW9H3N Rev 1
PCB NAME
715T2913-1
称爹 <称爹>
Sheet 2 of 19