Philips 26MD257B/37 Service Manual page 57

Inverter Schematic Diagram(for 15MF227B)
Board
1 2
IN
A
VDD
C811
1uF
B
VDD
R815
30K
R804
10K
1
2
R801
3
10K_1/4W_NC
BRIGHT_CTL
2 1 4
C
5
R806
C826
6
100K_NC
0.01uF/NC
7
8
R816
20K
C831
C846
0.33uF
1uF
D
R861
BRIGHT_CTL Isen
2 1
150K_1%_1/4W
E
F901 2.5A/250V
+16V
CN952
1
2
F903 3A/NC
3
4
5 BRIGHT_CTL
6 INVER_ON/OFF
F 7
8
9
9-pin connector
R871
INVER_ON/OFF
2 1
10K_1/4W
G R872
100K
H
1 2
3 4 5
+16V
C820 C821
470uF/25V 1uF R822
27R
C822
1.5nF
R811
R813
30K_1%
3M3
Q821
1 8
S1 D1
2 7
U811 G1 D1
3 6
S2 D2
16 4 5
DRV1 PGND G2 D2
AM9945N
15
VDDA DRV2
14
TIMER GNDA
C813
13
DIM CT
560pF_NPO
12
ISEN SSTCMP
11
+16V
VSEN LCT
C847
10
OVPT ENA 0.022uF/25V
C840 C841
C812 470uF/25V 1uF
9
NC1 NC2 R812
0.1uF R842
OZ9938GN 27R
620K 1/10W
C832
0.1uF
VDD
R807
C842
2 1
1.5nF
10K 1/10W
Q841
1 8
S1 D1
2 7
G1 D1
3 6
S2 D2
C819
4 5
R819
G2 D2
0.01uF/25V
1M
AM9945N
R863
2 1
30K_1%_1/6W
VDD
Isen
R880
10K_1/4W
Q880
2N7002
1
C880
0.1uF/25V
Q881
2N7002
1
Q883
2N7002 1
+16V
Q885
Q873 2N7002
2 1
PDTA144EU
Q871 Q886
2N7002 R874 2N7002
1 1
R873 330 1/10W
2.7K
C871
0.1uF_NC
1 Q874
2N3904
ZD874
VDD
RLZ5.6B
C874
1uF
3 4 5
7.Circuit Diagrams and PWB Layouts
6 7
PT801
1
R834
2 7
C802 6.2M 1/2W_NC
3pF/3KV
3
C801
4 R835
10pF/3KV
1
5 8
10K_1%
R821 C823 R824
6
27R 1.5nF C838
80TL15T900 DN 7.5K_1%_NC
1000pF_NPO
R820
R823
R837 C860
27R 27R
8.2K_1% 330pF
R829
0 1/10W
R839
C804
6.2M 1/2W
3pF/3KV_NC
C824
5PF/NC
C825
5PF/NC
PT802
1
2 7 R854
C806
C807
10pF/3KV
3 6.2M_NC 3pF/3KV
4 R855
5 8
10K_1%
6
R841
R857
80TL15T900 DN
27R R843 C861
R844
7.5K_NC
1000pF_NPO
27R
27R
R825
C858
8.2K_1%
270pF
R849
C843 1
1.5nF
0 1/10W
C844
C809 R859
5PF/NC
3pF/3KV_NC 6.2M 1/2W
C845
5PF/NC
D881
R882
OP1
2 1
1K 1/10W
IN4148
R881
C881
0.01uF 100K 1/10W
D883
R884
2 1 OP2
1K 1/10W
R883
IN4148
C883
0.01uF 100K 1/10W
D885
R886
OP3
2 1
1K 1/10W
IN4148
R885
C885
100K 1/10W
0.01uF
D887
R888
OP4
2 1
1K 1/10W
IN4148
R887
C887
100K 1/10W
0.01uF
6 7
8 9 10
1
CN821
2
CONN_NC
1
CN831
OP1
2
CONN
R831
2
1K
R836
10K_1%
D833 D831
BAV70/SOT23B
BAV99
2
3
1 CN823
1 2
CONN_NC
R833
R830
1.2K
10K_1%_NC
OP2
2
CN833
1
CONN
1 CN851
2
CONN
D853 OP3
BAV70/SOT23B
1 CN824
1 2
CONN_NC
R851
1K
3
R856
2
10K_1%
D851
BAV99
2
1 CN825
R850 R853 2
CONN_NC
10K_1%_NC 1.2K
OP4
2
CN853
1
CONN
R865 R866
C865
226_1% 100K/NC
33nF
CP NR. CL6xxxx
Title
15MF227B INVERTER BOARD
Size Document Number
C
E157C2NKA2PMNS (715T2266-1)
Date: Nov 22, 2006
8 9 10
TPM1.0U LA 55
11
A
CN821 A10 CN823 B10
CN824 C10 CN825 D10
CN831 A10 CN833 C10
CN851 C10 CN853 D10
CN952 F1 C801 B7
C802 B7 C804 C7
C806 C7 C807 C7
C809 D7 C811 B3
C812 C4 C813 C4
C819 D3 C820 B5
C821 B5 C822 B5
C823 B6 C824 C5
C825 C5 C826 C2
C831 D2 C832 D3
C838 B7 C840 C5
C841 C5 C842 D5
B
C843 D6 C844 D5
C845 D5 C846 D2
C847 C4 C858 D7
C860 B7 C861 C7
C865 E9 C871 G3
C874 G4 C880 E5
C881 F5 C883 F5
C885 G5 C887 G5
D831 B9 D833 B8
D851 D9 D853 C8
D881 F7 D883 F7
D885 F7 D887 G7
F901 E2 F903 F2
PT801 A6 PT802 C6
Q821 B5 Q841 D5
C
Q871 G3 Q873 F3
Q874 G4 Q880 E4
Q881 F5 Q883 F5
Q885 F5 Q886 G5
R801 C1 R804 C2
R806 C2 R807 D3
R811 B4 R812 C4
R813 B4 R815 B2
R816 C2 R819 D3
R820 B6 R821 B5
R822 B5 R823 B6
R824 B7 R825 D7
R829 B8 R830 B8
R831 B9 R833 B9
R834 A7 R835 B8
R836 B8 R837 B7
D
R839 B7 R841 C5
R842 C5 R843 C6
R844 C6 R849 D8
R850 D8 R851 C9
R853 D9 R854 C7
R855 C8 R856 C8
R857 C7 R859 D7
R861 E2 R863 E4
R865 E9 R866 E9
R871 G2 R872 G3
R873 G3 R874 G4
R880 E5 R881 F6
R882 F6 R883 F6
R884 F6 R885 F6
R886 F6 R887 G6
R888 G6 U811 C3
E
F
G
DS 15" TV 4-lamp inverter
H
Rev
1
Sheet 1 of 1
11