Sharp R-9320 Service Manual page 43

R-9320
%!50 R
I
Pin No. Signal
I/O 1
Description
7
D6
IN
To input a signal which communicates the door open/close information to LSI.
Door closed : "H" level signal (OV)
Door opened: "L" level signal (-32V)
8
D5
OUT 1
Digit selection signal.
The relation between digit signal and digit are as follows:
Digit Signal
Digit
DO.. . . . . . . . 1 st
Dl . . . . . . . . . .2nd
02 . . . . . . . . . .3rd
1 met.
03 . . . . . . . . . .4th
04 . . . . . . . . . .5th
D5
D5.. . . . . . . . , . 6th
Normally, one pulse is output in
~ _____ ---G::
every 13 period, and input the grid
of Fluorescent Display.
D4n
9
D4
10 D3
02
11
Dl
12
13 DO
DO a---- '1;"
1 msec.
L
14 FO IN
Terminal to change the functions according to the Models.
Signal in accordance with the Model in operation is applied to set up its function.
Signal Input level
FO . . . . . . . . , . . , . "H"
Fl . . . . . . . . . . . . . "L"
F2 , . . . . . . . . . . . . "L"
F3 . . . . . . . . . . . , . "L"
"H":
Connected to GND.
"L" : Connected to Vp (--32V) by pull-down resistor of internal LSI.
15
Fl IN
Signal similar to FO.
16
vss
IN Connected to GND.
17 F2 IN
18 F3 IN
+
I
Sianal similar to FO.
Signal similar to FO.
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