Sharp MZ-3500 - Manual (Page 91)

MZ3500
( Check No. 4 )
( Check No. 5 )
/<.y ^ Jf -y > K W
"H" in red
“H” in green
“H” in white
( Check No. 6 ) ( Check No. 7 ) ( Check No. 8 )
Backroung in red
Back ground in green
Back ground in black
' in blue
I" in red
I* "H" ir
}....
}
}....
H*‘ in green
in white
4) Speaker test
Performance of the speaker and the volume control are
tested. Listen carefully to detect any abnormal sound or
mulfunction. Adjust the volume control to a suitable listen­
ing level.
5) Printer interface test
Performance of the printer interface signal lines and action
of the 8255 are tested.
[Dispaly]
(1) Normal test ending
PR OK
(2) Abnormal test ending
PR ER .
6) Light pen interface test
Performance of light pen interface signal lines and the
action of the GDC are tested.
[Display]
On the upper left corner of the screen is displayed character
and line.
(1) Normal test ending
LP OK
(2) Abnormal test ending
LP ER
7) RS232C interface test
Performance of RS232C interface signal lines and the
action of the 8251 are tested.
[Display]
(1) Normal test ending
RS OK
(2) Abnormal test ending
RS ER
It will need wiring connection as illustrated in the figure
in order to test the RS232C interface. Pins of the RS232C
interface edge connector must be wired in the following
manner:
Front side
,---------------- — -V
7 5 3 1
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