Symphonic ST413E, Руководство по обслуживанию

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6-1
BLOCK DIAGRAMS
IF/Video/System Control Block Diagram
L2200BLIF
58
73
75
16
63
56 32
SCL
CF31 CF32
VCO F/B
Q31
AFT
A
GC-IN
EXT
-H
PR
O
TECT
-2
PR
O
TECT
-1
PR
O
TECT
-3
P-ON-H
SD
A
TUNER LINE
TO CR
T/H.V
. BLOCK
WH301A
TO CR
T/H.V
. BLOCK
WH301B
BLUE
5 GREEN
4 RED
3
IC111 IC31
(IF SIGNAL PR
OCESS)
REMO
TE
SENSOR
KEY SWITCH
CHR
OMINANCE
PR
OCESS
CIRCUIT
LUMINANCE PR
OCESS
CIRCUIT
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 11
53 46 45 38 37
AC
L
H-DRIVE FBP V
-DRIVE
V
-RAMP-F/B
TO A
UDIO/PO
WER
CONTR
OL BLOCK
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
JK701 VIDEO-IN
24
X301 3.58MHz
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
FM DET
AF AMP
20
14
16
22
7
21
5
3 8
1
11
TU1
SF1
IF
AG
C
SD
A
SCL
EXT
.CLK
1
11
5 4 8
IC151 (MEMOR
Y)
SCL
6
SD
A
5
17 26
TU-A
UDIO
52 51 50
MAIN CB
A
VIDEO SIGNAL
RF/IF SIGNAL
A
UDIO SIGNAL
TV MICON/VIDEO /A
UDIO/CHR
OMA
/DEFLECTION
67 68 76 79 69 66 70
WF16
WF1
WF6
SCL
SD
A
TO A
UDIO/PO
WER
CONTR
OL BLOCK
WF2
PR
O
TECT
-2
PR
O
TECT
-1
SD
A
4
I2C-OPEN
2
SCL
5 CN301
(NO CONNECTION)
CN301 is used f
or
adjustment at f
actor
y
7
CS
72
I2C-OPEN