Emerson 20" Color Television 6420FE - Manual (Page 23)

6-2 L2401BLIF
IF/Video Block Diagram
58
16
56 32 30
SCL
CF31 CF32
VCO F/B
Q31
AG
C
SD
A
CPN. CPS
.
CPS
.
CPN.
TUNER LINE S-SW
TO CR
T/H.V
. BLOCK
WH301A
TO CR
T/H.V
. BLOCK
WH301B
BLUE
5 GREEN
4 RED
3
IC31
(IF SIGNAL PR
OCESS)
CHR
OMINANCE
PR
OCESS
CIRCUIT LUMINANCE PR
OCESS
CIRCUIT CHR
OMA COMB
BASEBAND
TINT
H-SYNC PR
OCESS
CIRCUIT V
-SYNC
PR
OCESS
CIRCUIT
VCXO
OSD
RGB MA
TRIX
/COLOR CONT
OSD SW CONTRAST BRIGHTNESS
RGB DRIVE /CUT OFF /H.V
. BLK
LPF
14
29
11
61
53 46 45 38 37
AC
L
H-DRIVE FBP-IN RAMP-OUT V
-RAMP-F/B
SA
W
FIL
TER
VIF AMP
VIDEO DET VCO
4.5MHz FIL
TER LPF
IF A
GC DET
EQ AMP
RF AG
C
AMP
AFT
4.5MHz TRAP
SIF AMP
16
11
13 18 6
17
4
2 7
1 8
TU11
SF11
IF
AG
C
SD
A
SCL
EXT
.CLK
1 11 5 4 8
14
26
SIF
52 51 50
MAIN CB
A
VIDEO SIGNAL
RF/IF SIGNAL
A
UDIO SIGNAL
WF16
WF2
TO A
U
DIO BLOCK
IC111 TV MICON/VIDEO /A
UDIO/CHR
OMA
/DEFLECTION
JK721 S-VIDEO-IN
CY
INPUT0
X301 3.58MHz
TO SYSTEM CONTR
OL
BLOCK
JK701 VIDEO-IN (FR
ONT)
WF1
AFT
-IN
24