Block Diagram - Durabrand DBTV1902 Service Manual

Color television receiver
Table of Contents

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CH. UP
VOL. UP
CH. DOWN
VOL. DOWN
POWER
OS101
1
J702
2
J703
2
T502
Q504
4
FEED BACK
8
Q502
BUFFER
13
6
Q501
SWITCHING
E-1
TU001
11
5
4
1
MICON IC
CF601
IC101 OEC7073A
SAW FILTER
1
AUDIO MUTE
7
KEY2
26
CVIN
34
6
KEY1
RED R
35
GREEN G
36
BLUE B
33
BLANK
9
REMOCON
38
H. SYNC
37
V. SYNC
30
SCL1
31
SDA1
27
RESET
6
5
MEMORY IC
SDA SCL
IC199
POWER
29
S-24C02BDP-1A
H-CTL
42
Q507
FEED BACK
SW
DEGAUSS COIL
L503
D501~D504
RECTIFIER
L501
1
3
5
2
F501
AC IN

BLOCK DIAGRAM

CHROMA IC
IC601 M61250FP
X602
3.579545MHz
X' TAL
34
AUDIO OUT
59
RF AGC OUT
63
VIF IN (1)
64
VIF IN (2)
8.7V REG OUT
31 Y SW OUT
23 R IN
22
G OUT
G IN
21 B IN
B OUT
24
FAST BLK
AT5.7V REG
19 INV FBP OUT
FBP IN
20
V PULSE OUT
POWER ON CONT
27
SCL
26
SDA
H OUT
P.CON 5.7V REG
30
MCU RESET
VREG VCC
V OUT
5
TV/Y IN
38 EXT Cin
53 EXT AUDIO IN
VIF VIDEO OUT
V-OUT IC
IC401 AN5522
PUMP UP
-
AMP
+
7
3
5
6
IC1001 AN7511
51
2
6
SOUND AMP
IC
4
8
Q606
REG.
47
Q801
R OUT
RED OUT
14
Q802
15
GREEN OUT
16
Q603
Q803
32
REG.
OUT
BLUE OUT
10
Q610
28
H-CTL
11
Q604, Q605
REG.
49
42
41
Q402
58
H. DRIVE
Q401
H. OUTPUT
FB401
9
1
F
2
S
10
HV
3
SP1001
UNREG + 12V
9
3
7
B
G
R
CRT
Heater
4
F
8
DY
TUNER VIDEO SIGNAL
R. SIGNAL
G. SIGNAL
B. SIGNAL
DEFLECTION SIGNAL
AUDIO SIGNAL
LUMINANCE SIGNAL
E-2

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