Sharp MZ-350C Service Manual page 78

M Z 3500
8-4. System SW1 (D!P SW) (User operative through the cabinet bottom)
No.
1
2
3
5
6
7
8
10
Signal name
SW1
SW2
SW3
SW5
SW6
FD1
(SW8)
P/M
(SW9)
"•
Function
Choice of decimal
formal
1
RS232C
assign
Key shift mode
setup
Choice of CG
for display
___
_— — . —
Position
ON
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
•
•
Polarity
L
H
L
L
H
L
H
L
H
L
H
L
H
L
H
L
H
:== =
Description
SW2 SW1
ON ON CE332P
OFF ON MZ1P02
ON OFF IO2824
OFF OFF
High resolution CRT (MZ1D02, MZ1D03)
Medium resolution CRT (MZ1D01, MZ1D06)
A period is Output for a decimal point.
A comma is outputted for a decimal point.
Low state or open ER Signal du ring data Output
will result in an error.
The signal ER becomes invalid.
CD is high äs long äs power is on to the main
unit.
CD goes high only du ring data Output. However,
it would not go high if the echo-back function is
on the host side.
An error is cause when the PO signal is high
during data Output.
Polarity is inverted for the above.
Normally in capital letter, but in small letter
when shifted.
Normally small leter and in capital letter when
shifted.
-3500 CG will be assigned when the 200-raster
CRT is in use.
-2000 CG will be assigned when the 200-raster
CRT is in use.
£48 pin of MMR
ToCTS.DSR
of the 8251.
To CTS of the
8251
#54 pin of MMR
(FDD
P/M signal
(To A3 CG)
N.C
Dip Switches (A) and (B) located on the PWB are used for
servicing the M FD or for other machine service and there-
fore the user is not supposed to use these switches. In
addition, these switch must be used when either the CE-
330M or331M is used äs the expansion MFD.
DIP SW (A)
No.
1
2
3
4
Signal name
SEC
(SW1A)
FD2
(SW2A)
FD3
(SW3A)
SRQ
(SW4A)
44 pinof MMR.
56 pin of MMR.
58 pin of MMR.
Bus request
to sub-CPU.
DIP SW (B)
No.
1
2
Signal name
SRES
(SW1B)
SW2B
SUBCPU
reset signal
SUB CPU BUS
Select signal
l
1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
2
OFF
OFF
ON
ON
OFF
OFF
ON
ON
3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
When SH in use.
When DH in use.
—
—
Use of the CE330M äs an expansion unit
Use of the CE331M äs an expansion unit
Check mode *1
Check mode "2
*1 : Test program is loaded and executed.
\
*2: Provided for the test of the MFD interface. The
read/write test is carried out for the expansion unit.
Used for an individual test of the CPU PWB. When these
three switches are turned off altogether, it makes the
sub-CPU operated independently. To be used in th ON
condition under a normal Situation.
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