Durabrand CB130DR8, Service Manual

Page: 25 / 55

7-1
BLOCK DIAGRAMS
System Control Block Diagram
P7100BLS
77
80
2
65
79
SCL
INPUT
-0
INPUT
-1
PR
O
TECT
-2
PR
O
TECT
-1
PR
O
TECT
-3
P-ON-H
SD
A
55
B
US-CONT
REMO
TE
SENSOR
KEY SWITCH
28 20 39
+5.7V
-CTRL
MCU+5.7V
-CTRL
RESET
DTV
-ON-H
+8.7V
-CTRL
+5.7V
-CTRL
MCU+5.7V
-CTRL
+8.7V
-CTRL
T
O
CR
T/H.V
.
BLOCK
DIA
GRAM
PR
O
TECT
-2
PR
O
TECT
-1
PR
O
TECT
-3
P-ON-H
KEY
-IN1
RCV
-IN
RCV101
IC901
(MEMOR
Y)
SCL
6
SD
A
V
OLUME
7 6 8
76
9 4
78
I2C-OPEN IC111
TV MICON/VIDEO /A
UDIO/CHR
OMA
/DEFLECTION
56 14
RESET
DTV
-ON-H
V
OLUME
A
U
DIO-MUTE
MAIN CB
A
INPUT
-1
INPUT
-0
SCL SD
A
75
A
UDIO-MUTE
DTV
-S-RESET
DTV
-S-SREQ
DTV
-S-SCLK
DTV
-S-SIN
DTV
-S-SOUT
13 54 57 58 59
Q161
SWITCHING
Q131
SWITCHING
SWITCHING
SWITCHING
Q912
Q911
5 7
CS
T
O
DTV MODULE
BLOCK DIA
GRAM
IC101 (DTV SIGNAL PR
OCESS)
DTV MODULE CB
A UNIT
38 155 154 153 204
DTV
-S-SREQ
DTV
-S-SCLK
DTV
-S-SIN
DTV
-S-SOUT
DTV
-S-RESET
CN901
CN101
12
12
10
10
9
9
8
8
7
7
DTV
-S-SREQ
DTV
-S-SCLK
DTV
-S-SIN
DTV
-S-SOUT
DTV
-S-RESET
T
O
A
UDIO
BLOCK DIA
GRAM
T
O
PO
WER SUPPL
Y
BLOCK DIA
GRAM