19
AVR-550SD
KIA7805API (MAIN: IC407)
BA7626(VIDEO: IC601,603,607)
KIA7812API (MAIN: IC406)
MM74HC4053MX (VIDEO: IC611~613,705)
NJM2274 (VIDEO: IC610))
BLOCK DIAGRAM
7
8
16
15
14
13
12
11
10
9
Monitor OUT
GND
IN5
GND
IN4
CTL E
IN3
CTL D
IN1
CTL A
V OUT1
Vcc
IN2
CTL B
V OUT2
CTL C
6dB
6dB
LOGIC
LOGIC
Note 1:
* mark means that
feasible for either H or L.
Note 2:
Each input terminal is
provided with sink chip
clamp (BA7625).
Each input terminal takes
20kohm at the end (BA7626).
C
D
E
V OUT 2
L
L
*
IN 1
H
L
*
L
H
*
IN 3
H
H
L
IN 4
H
H
H
IN 5
C
D
E
V OUT 1
L
L
*
H
L
*
IN 2
L
H
*
IN 3
H
H
L
IN 4
H
H
H
IN 5
A
B
E
MONITOR OUT
L
L
*
IN 1
H
L
*
IN 2
L
H
*
IN 3
H
H
L
IN 4
H
H
H
IN 5
T
T
1
2
V
EE
3
4
5
6
7
8
9
10
11
16
15
14
13
12
Y1
Y0
Z1
Z
Z0
Enable
GND
Vcc
Y
X1
X
X0
C
A
B
X = Don’t Care
Truth Table
Control Inputs
Select
Enable C B
A
ONSwitches
L L
L
L
Z0 Y0 X0
L L
L
H
Z0 Y0 X1
L L
H
L
Z0 Y1 X0
L L
H
H
Z0 Y1 X1
L H
L
L
Z1 Y0 X0
L H
L
H
Z1 Y0 X1
L H
H
L
Z1 Y1 X0
L H
H
H
Z1 Y1 X1
H
X X X None
Clamp
Disc.
Vref.
750
Ω
1
8
6
7
2
4
3
Bias
Yin
Cin
C mute
GND
Vsag
Vout
Vcc
Power Save
5
Summary of Contents for AVR-550SD
Page 3: ...3 AVR 550SD LEVEL DIAGRAM...
Page 4: ...4 AVR 550SD...
Page 5: ...5 AVR 550SD BLOCK DIAGRAM...
Page 11: ...11 AVR 550SD Functions...
Page 18: ...18 AVR 550SD CXP7400P10 MAIN IC401 Block Diagram...
Page 20: ...20 AVR 550SD LC74781 VIDEO IC609...
Page 23: ...23 AVR 550SD 2 FL DISPLAY 15 ST 43GN PIN CONNECTION GRID ASSINMENT 46 45 90 1...
Page 24: ...24 AVR 550SD ANODE CONNECTION...
Page 25: ...25 AVR 550SD PRINTED WIRING BOARDS MAIN P W B UNIT COMPONENT SIDE...
Page 26: ...26 AVR 550SD FOIL SIDE...
Page 27: ...27 AVR 550SD VIDEO P W B UNIT COMPONENT SIDE...
Page 28: ...28 AVR 550SD FOIL SIDE...
Page 29: ...29 AVR 550SD FRONT P W B UNIT COMPONENT SIDE...
Page 30: ...30 AVR 550SD FRONT P W B UNIT FRONT P W B UNIT FRONT P W B UNIT FOIL SIDE FOIL SIDE...
Page 31: ...31 AVR 550SD SMPS P W B UNIT...
Page 60: ...60 AVR 550SD LEVEL DIAGRAM...
