Emerson 20" Color Television 6420FE - Manual (Page 22)

6-1
BLOCK DIAGRAMS
System Control Block Diagram
L2401BLS
58 73 75
63 62 80
56
SCL AFT
-IN
AG
C
AFT
-IN
AG
C
INPUT0 INPUT1
PR
O
TECT
-2
PR
O
TECT
-1
PR
O
TECT
-3
P-ON-H
SD
A
REMO
TE
SENSOR KEY SWITCH
74 28 18 40
DG-ON-H +5V
-CTRL
+5V
-CTRL2
+8V
-CTRL
DG-ON-H +5V
-CTRL
+5V
-CTRL2
+8V
-CTRL
TO PO
WER SUPPL
Y
BLOCK TO CR
T/H.V
. BLOCK
PR
O
TECT
-2
PR
O
TECT
-1
PR
O
TECT
-3
P-ON-H
KEY
-IN2
KEY
-IN1
RCV
-IN
RCV101
IC151 (MEMOR
Y)
SCL
6
SD
A
5
V
OLUME
67 68 76 79 69 66 70
PR
O
TECT
-2
PR
O
TECT
-1
7
CS
72
I2C-OPEN IC111 TV MICON/VIDEO /A
UDIO/CHR
OMA
/DEFLECTION
TO IF/VIDEO BLOCK
INPUT0
TO IF/VIDEO BLOCK
TO A
UDIO BLOCK
V
OLUME
A-MUTE
MAIN CB
A
Q161
INPUT1 INPUT0
Q131
SCL SD
A
TO A
U
DIO BLOCK
57
A-MUTE