Operation Diagrams - Loewe INDIVIDUAL SOUND PROJECTOR Service Manual

70

OPERATION DIAGRAMS

IC1: M66003-0101FP
FL display driver
/CEFL
IC801: NJM2068MD-TE2
CKFL
Dual operational amplifier DTFL
OUT 1 8 +V
1 CC
–IN 2 7 OUT
1 2
+ – + –
XIN
+IN 3 6 –IN
1 2
XOUT
–V 4 5 +IN
CC 2
/RESET
VDD
Vcc2
Vss
Vp
Display code
CGROM
RAM
(35 bit x 166)
(8-bit x 60)
Segment
Code
output
write
circuit
CGROM
Serial dot data
2
data (35 bit x 16)
write
receive
3
Code/
circuit
4
command
control
circuit
code
Segment
select
digit
select/
7
Clock
output
timing Display
generator circuit
clock controller scan pulse
6
Digit
output
1
circuit
8
18
5
64
44 P35
19 P10
17 P9
P1
9
45 P36
G12
52
51 G13
G14
50
49
48
P38
47
46 P37
63 G1
53 G11