Troubleshooting Graphics Problems
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| Problem | Recommendation |
Strange dot patterns | Many computers have problems sending | ||
appear in graphics | one or more of the codes between 0 and | ||
printouts |
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| 13. Try to avoid these characters. |
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| Be sure that no other commands or |
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| carriage returns come between the |
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| graphics command and its data. |
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Printer freezes when | If the printer freezes in graphics mode, | ||
printing | graphics | you have probably not sent enough data. | |
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Text appears as random | If you interrupt the computer while it is | ||
graphics |
| characters | printing in graphics mode, for example |
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| during a screen dump, it may not reset |
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| the printer to text mode. If not, the next |
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| text printed will be interpreted by the |
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| printer as graphics data. Turn off the |
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| printer and turn it back on again to reset. |
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Data Dump Mode
The
Enter this mode by turning on the printer while holding down the FORM FEED and LINE FEED buttons at the same time. Then, when you run a program, either an application program or one you have written in any programming language, the
If the characters are printable, they appear in the column on the right as their true ASCII characters, as shown below.
Problem Solving and Maintenance |