After Connection To The Computer, The Plotter Operates Abnormally - GRAPHTEC MP303-04 User Manual

5.4 After Connection to the Computer, the Plotter Operates Abnormally

Possible cause
Is the connecting cable between the computer and
plotter defective?
Are the interface conditions correctly set at both the
computer and the plotter?
Are the computer, operating system, and
programming language all operating properly?
Is the paper properly loaded?
Is the plotter in Setup mode?
Is the PAUSE lamp lit?
Has an Off Scale error occurred?
Different cable connectors may be shaped identically
but be wired differently according to the computer
model. Cables for connecting various computer mod-
els are separately available so check with your ven-
dor before connecting your plotter.
Each end of the cable is specifically designed for con-
nection to the plotter or the computer.
As it is physically possible to connect certain cables
in reverse, make sure the cable is properly oriented.
Certain commercial software programs require
specific interface conditions. Be sure to check the
manual provided with your program.
If the problem only occurs when the plotter responds
to a READ command sent from the computer, check
your settings for the parity and data length.
Use the Character Dump Mode (to be discussed later
in this section) to check if the printed "dump" data
matches the data sent from the computer.
If they match, check the computer's program.
If they do not match, check the interface conditions.
Check that the operating system, programming
language, and application program are compatible
with the computer you are actually using.
Press the
CHART HOLD
Press the key to cancel Setup mode.
MO D E
Press the key to cancel Pause mode. (The
PAUSE
plotter cannot be controlled by the computer during
Pause mode.)
During plotting, if the pen carriage stops at the edge
of the effective plotting area but the PROMPT lamp
does not blink to indicate an error status, an off scale
error has occurred. This is not a malfunction of the
plotter. Plotting is resumed when the plotter receives
data that positions the pen carriage within the effec-
tive plotting area.
5-3
Solution
key to secure the paper.