Philips 26MD257B/37 Service Manual page 123

Scaler Board Schematic Diagram-Power
1 2
DL MT5371 / MT5112 - 4 LAYERS
A
0R05 1/4W
DC POWER INPUT
BRIGHT_ADJ:
Normal:Max:+3V3, Min:0V
Stand_By:0V
CN100
63391 11P 2.0MM
B
1
+24V
2
3 INVERTER_ON_OFF:
+12V
4
Normal: High
BRIGHT_ADJ
5
6 INVERTER_ON_OFF Stand_By: Low
7
8
R172 1K 1/10W
9
10 STAND_BY
11 OPWRSB
R187 1K 1/10W
STAND_BY:
Normal: High
Stand_by: Low
+5V_STB
C
R171
10K 1/10W
STANDBY_12V
R170
OPWRSB
Q111
MUN2211TIG 100R 1/10W
U101
D
BST 4
BST
7
VFB1
10
VFB2
8
COMP1
C107
100N 25V
9
COMP2
TP119
TP120 R129
1
220R 1/10W
13
ROSC
TP121
Q106
R127 BC847C
OPWRSB 10K 1/10W
OPWRSB(+2V6):
Normal: Low
Stand_By: High
E
Q105
R132 BC847C R131
220R 1/10W 10K 1/10W OPWRSB
OPWRSB(+1V2):
Normal: Low
Stand_By: High
C106
100P 50V
F
G
H
1 2
3 4
+24V +12V
R175 R174 TP109 TP106
NC/0R05 1/4W
+5V_STB
TPS5430DDAR R101
5 4
ENA VSENSE
6 3
GND NC
7 2 R102 10K 1/10W 1%
VIN NC
8 1 2K7 1/10W 1%
PH BOOT
C131 C129
U100
470uF 35V 100N 50V
OPWRSB(+5V_SW
R100 R148
ON/OFF):
0R05 1/10W 220 1% 1/10W
Normal: Low
Stand_By: High
C120
10N 50V
R124 R149 22uH L100 C127
56R 1/8W 56R 1/8W 470uF/25V
OPWRSB
C134
330P 50V
+24V or +12V TO +5V4_STB
+5V4_STB TO +5V_SW BY OPWRSB
Q101A
SI4936ADY
2
C128 L101
R138 3N9 50V 10uH
4R7 1/10W
C116
R141 100N 25V
Q101B 10R 1/10W
SI4936ADY Q102A R147
2 SI4936ADY 6K8 1/10W
C118
4
C114 1N 50V
C110 R110 3N9 50V
4R7 1/10W C119 C126
1N 50V R142 3N9 50V
1U 25V
1K 1/10W 1%
Q102B
1 SI4936ADY
GATEH1
4
R140
2
GATEL1
2R2 1/10W R134
16
GATEH2
750R 1/10W 1%
R112
15
GATEL2 R117
2R2 1/10W
5 R136 6K8 1/10W
IS+1
6
IS-1
3K3 1/10W
C121
100N 25V R135
12
IS+2
11 R133 6K8 1/10W
IS-2
6K8 1/10W
R116
NCP5422AD 1K 1/10W R137
22K 1/10W
R114
3K3 1/10W
L102 PHD38N02LT
C103 C102 R118
10uH
DV12
C100
1N 50V 1N 50V 10R 1/10W
100N 25V
R119 C101
6K8 1/10W
3N9 50V
DV18_DM
240 1% 1/10W
R120
1K 1/10W 1% R123
100UF/25V
R121
1K 1/10W 1%
3K9 1/10W
R122
From +12V to +1V2/+1V8/+2V6 By OPWRSB
3 4
7.Circuit Diagrams and PWB Layouts
5 6 7
2,15 +24V
S-01
2,15,17 +12V
2,7 +5V_STB
2,12,13,14,15,16,17 +5V_SW
5,6,8 DV26_DDR
4 DV18_DM
5,6 DV12
TP107
2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17 GND
+5V_STB +5V_SW
2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17 AGND_PLL
Q100 SI5441DC
2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17 AGND_AFE
8 1
D D
7 2
D D
6 3
D D 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17 AGND_HDMI
5 4
S G
R103 C132 C130
2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17 AGND_LVDS
22K 1/10W 100N 25V
47U/25V
R104
100R 1/10W
2,7 +5V_STB
MUN2211TIG Q103
2
2,12,13,14,15,16,17 +5V_SW
Q108 BC847C C133
C117 100N 25V
TP112 2,5 OPWRSB
100N 25V R106
5 STAND_BY
10K 1/10W
16 BRIGHT_ADJ
16 INVERTER_ON_OFF
D102
BAS316 C113
R107
C112
68R 1/10W 1 2
A K
D101
1 2
DV26_DDR R109
A K
R108
BAS316 68R 1/10W 220R 1/10W Q104
BC817-25
D103
BZX384-C18
C125
470uF/25V
BST
C111
100N 25V
+12V
R143
1K5 1/10W
R144
2K2 1/10W
Q107
1
BZX384-C5V6
D104 U102 TS431AIL
1 2 3 5
A K Cathode Anode
C123
1 2
NC NC*
1N 50V
R146
C124 220 1% 1/10W R145
560 1% 1/10W
5 6 7
8 9
+24V
+12V
+5V_STB
+5V_SW
DV26_DDR
DV18_DM
DV12
GND
AGND_PLL
AGND_AFE
AGND_HDMI
AGND_LVDS
+5V_STB
+5V_SW
OPWRSB
STAND_BY
BRIGHT_ADJ
INVERTER_ON_OFF
R168 NC/0R05 1/8W
Q109
1 6
D D
2 5
D D
3 4
G S
+12V
SI3441BDV
R158
22K 1/10W
R167
10K 1/10W
R169
Q110 STANDBY_12V
BC847C
4K7 1/10W
R152
22K 1/10W
8 9
21
TPM1.0U LA
10 11
A
CN100 B1 C100 G5
C101 G6 C102 G5
C103 G4 C104 G2
C105 H2 C106 H2
C107 F3 C108 G6
C109 F5 C110 E4
C111 E9 C112 D10
C113 D11 C114 E6
C116 D7 C117 C8
C118 E7 C119 E7
C120 B6 C121 F5
C122 G2 C123 G8
C124 G8 C125 E8
C126 E7 C127 C6
C128 D5 C129 B4
C130 B9 C131 B4
C132 B9 C133 C9
C134 C5 D101 D9
D102 D10 D103 E10
D104 G8 L100 C6
L101 D7 L102 G6 B
Q100 B9 Q101A D5
Q101B E5 Q102A E6
Q102B E6 Q103 C9
Q104 D10 Q105 G3
Q106 F3 Q107 G8
Q108 C8 Q109 D12
Q110 E11 Q111 D2
R100 B6 R101 B6
R102 B6 R103 B9
R104 C8 R105 B9
R106 C9 R107 D9
R108 D10 R109 D9
R110 E5 R111 E5
R112 E5 R113 F3
R114 F5 R115 F5
R116 F5 R117 F6
R118 G5 R119 G5
R120 G5 R121 H5
R122 H6 R123 G6
R124 C5 R125 F7
R126 F7 R127 F3 C
R128 F3 R129 F3
R130 G3 R131 G3
R132 F2 R133 F5
R134 E7 R135 F6
R136 F6 R137 F6
R138 D5 R139 E5
R140 E5 R141 D7
R142 E7 R143 F8
R144 G8 R145 G9
R146 G8 R147 E7
R148 B6 R149 C5
R152 E12 R158 D12
R167 D11 R168 D12
R169 E12 R170 D2
R171 D2 R172 C2
R174 B4 R175 B4
R187 C2 TP100 B1
TP101 B1 TP102 B1
TP103 B1 TP104 B1
TP105 B1 TP106 B6
TP107 B9 TP108 B5
D
TP109 B6 TP111 C7
TP112 C9 TP113 D8
TP114 G8 TP115 G7
TP116 E3 TP117 E3
TP118 E3 TP119 F3
TP120 F2 TP121 F3
TP122 D6 TP123 E6
TP124 B2 TP125 B2
U100 B5 U101 E4
U102 G8 ZD100 C6
E
F
G
H
10 11