Sherwood R-725/RDS Service Manual page 28

Audio/video pro-logic receiver
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Model No. : R-725/RDS - AV-725
IC 106, 806, 810 : MC14094BCP
IC 102, 103 : LC7821
IC 811 : LC7822
R1
R2
R3
R4
R5
RCOM1
R5
R6
R7
R8
UTE
mo
LEVEL Shift
<r
OES
|
Serial
Data
in
C1
Enable
2
Resistor
Stage 2
Resistor
Stage
3
[taten 2 Ha state suter 2 |
[tates 3 HY state uter |
[i state_butter« |
Resistor
Stage
§
| Latch § [15 State Buffer 5 |
Ptah © E16 state outer 6 |
[batch 7 FT state batter? |
fe ie
ee
peas
Stage 8
a
[] 3 State Buffer 8 |
State
Buffer g
Clock
Ciock
Strobe
Strobe
py
Clock
Dx)
Chock
Strobe
a
B
Resistor
Stage
4
ee)
E
if
DATA
CL
CE
Input Protection Diodes
Strobe
Strobe
IC 801-805 : KIA 4559P
B
B
B
V+ OUT
-IN
+IN
|
6
8
al
fe inp Leib
|
Ky
<8 alee
ae
&
[a
a
a
oe Sea aa
el
PIO DOOD OOOO SO OOOOV OOOO OOOQOOOOOOR
OUT
—IN +IN
34
35

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