Sanyo CE14SP4R, Руководство по обслуживанию

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IC Block Diagrams
-6-
IC201 <IF System Block Diagram> LA76818J-A-E
11
12
BUS
Interface
SA
W
5
6
4
8 7
PIF In1 PIF In2
IF In
9V
30K
RF AGC
Out
120K
IF VCC
IF
GND
VIF AMP
VIF 1
VIF 2
VIF 3
IF AGC
Drive
RF
AGC
2ndIF AGC
RF AGC
Delay
6bit
IF AGC
Def 1bit
+
-
(6 Vcc)/7
To
BUS
3
0.022u
PIF
AGC
IF
AGC
Data
Clock
APC
Det
+π/4
-π/4
Snd
Det
Amp
52
SIF
.Out
Sound
T
rap
Vi
d
e
o
Det
Buzz
Canceller
50
APC
Filter
330
0.47u
+
PLL
Pull-in SW
To
BUS
Lock
Det
Vi
deo.Level
3bit
Amp
54
10p
SIF
.In
Sound
BPF
VCO.Coil
VCO
COIL1
VCO
COIL2
48
49
VIF
VCO
Chroma Counter
B/N INV
IF
Ident
OSC C/D
Amp
SIF
. Sys
2bit
pre-
scaller
SIF
VCO 500K
BPF
SIF
APC
Filter
1K
0.01u
1000p
53
LIM
AMP
FM
Det
FM.Level
5bit
Chroma
C/D
APC
Det
500K
Det
To
BUS
Chroma
VCO
VIF
Counter
Reset
Pulse
VCO Ident
VIF
.Sys
2bit
Phase
Detector
A.MUTE
1bit
VOLUME
D/A
VOLUME
Filter
A.SW
1bit
Input Select
VOLUME
(A
TT)
-
+
-
+
2.5V
Amp
FM Gain
1bit
Deem-TC
1bit
De- emph
FM Mute
1 bit
2 9
46
51
1
A.Fil.Def
1bit
VOLUME
7bit
47
VCO
Alignment
AFT
10
AFT
Vcc
100K 100K
0.1u
VCO Filter
+
0.47u Audio.out
+
Audio in
10u
Vi
d
eo
Out
FM Filter
+
1u
FM Out
0.01u
+
to BUS Line
+
SM_14-C4FVR(RU) 1/6/05 2:23 PM Page 6