Backlight Inverter - Sanyo DP19649 Service Manual

A B
8
7
FROM POWER
INV+B
P.CON+12V
6
INV_GND
W809
5 GND
4
R7001 R7003
LIGHT_CTL
2.7K 4.7K
R7004
INVERTER_H
1K
3
2
4A 125V
CAUTION
:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE 4A 125V(F7001)
1
ATTENTION
:POUR UNE PROTECTION CONTINUE LES RISQUES D'INCEIE
N'UTILISER QUE DES FUSIBLE DE MEME TYPE 4A 125V(F7001)
CAUTION
:F7001 IS MANUFACTURED BY SKYGATE CO.,LTD., TYPE 20N.
A B
G-25
C
BACKLIGHT INVERTER SCHEMATIC DIAGRAM
W836
12.0 8.3
INVERTER +B SW
Q7002
9.1
KTC3198
R7022
3.3K 1/4W
INVERTER CTL IC
IC7001 BD9893F
R7010 C7011
1.4 8.3
RT VCC
39K +-1% 1 B
R7013 R7024
1.4 5.0
SRT N1
68K 22 1/4W
1.2 0
FB PGND
R7023
1.2 5.0
IS N2
22 1/4W
R7018
0.5 2.5
VS STB
1.2K
C7009
0 2.7
INV GND SS
0.1
R7005 C7008
2.0 0
DUTY SCP
100 0.47
C7003
1.2 1.5
BCT COMP
0.068 B
R7014 R7032
15K 33K
R7011 R7027
100K 15K
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(POWER PCB)
4A 125V
F7001
20N_4000FS
DRIVE
4A 125V
Q7004 FW256-TL-E
0 S1 D1 12.4
2.6
G1 C7018 R7039
D1 12.4
500V 0.0022 B 33 1/4W
C7017 R7038
0 S2 D2 12.4
500V 0.0022 B 33 1/4W
2.6 G2
D2 12.4
B
B
COMP_FB
Q7001
KTC3875S_Y_RTK
1.5
R7021 R7047 D7012
0.3
270K 10K 1SS133
0
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D E
F G
T7001
8137001R
3.1
12.4
1 8
12.6 0
2 7
12.6 0
3 6
12.4 3.1
4 5
HIGH VOLTAGE
ATTENTION CAUTION
:LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
F G
H
8
7
CP7001
C3502WR0-2P-HK
NC
LV 2
HV 1
NC
VS_DET 6
IS_COMP
IS_DET2
CP7002
C3502WR0-2P-HK
NC
LV 2
HV 1
NC
5
4
3
2
PCB240
CEH434
:SINCE THESE PARTS MARKED BY ARE
CRITICAL FOR SAFETY,USE ONES 1
DESCRIBED IN PARTS LIST ONLY
H
G-26