The Maintenance Self-Test; Connecting Your Computer - Citizen 120D+ User Manual

Dot matrix printer
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SET UP
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When you are satisfied that everything is working as it
should, turn the power switch off to stop the test.
The maintenance self-test
The 120D+ printer has another self-test that is called a
maintenance self-test. The maintenance self-test is run by
turning the power on with both the LF and On-line buttons
held down.
The print-out is headed 'Configuration Print' and consists of
three parts. The first part identifies the version of the
control program and character generators in your 120D +
printer. Then the print-out describes the setting of the
dipswitch controlling the configuration of the printer and
finally changes to rows and rows of H's which are used in
the factory to check the printing alignment.
To suspend printing in self test operate the ON LINE button
and when you wish to leave this mode turn off the power
switch.
CONNECTING YOUR COMPUTER
Your computer and printer communicate by means of a
cable, which is usually sold separately. Each computer uses
a slightly different cable so you will need one made
specifically for your computer. The cable you need is called
a
Centronics parallel printer cable
or a
parallel printer
interface cable.
NOTE:
An optional serial interface is available for the
120D+ printer if your computer does not have a parallel
output connection.
WARNING:
Before making any connections, be sure that
the power is off to both the computer and the printer.
Connecting the cable to the 120D + printer is very simple.
Figure 1-15 shows the cable connector on the right side of
the 120D+ printer. The connector is tapered so that you
can only connect the cable one way. Move the small wire
clamps out of the way and fit the cable connector onto the
connector on the 120D + printer. The two should fit
together with just a slight push. (If they do not, turn the
cable connector over and try again.) With the cable
connected, press the wire clamps into the notches.
13

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