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Page: 94

Service Guide ML390/391

Chapter 4 Failure & Repair Analysis

4.7 HEXADECIMAL DUMP

4.7.01 General Information

Hexadecimal dump mode allows you to check the data sent from the computer to the printer. All data sent

to the printer, including test and printer commands, will print in both hexadecimal and ASCII format. In the

ASCII format, all non-printable codes will be represented by a period.

4.7.02 Procedure

To place the printer in hexadecimal dump mode, follow this procedure.

· Power OFF the printer.

· Press and hold SEL while powering ON the printer.

· The printer will remain in hexadecimal dump mode until it is powered OFF.

4.7.03 Sample

Here is a line of BASIC code.

LPRINT CHR$(27) ;"0";CHR$(30) ;"This is an example of a hexadecimal dump."

In hexadecimal dump mode, the BASIC code line would print as follows.

This is an example of a hexadecimal dump.

1B 30 1E 54 68 69 73 20 69 73 20 61 6E 20 65 78 .0.

61 6D 70 6C 65 20 6F 66 20 61 20 68 65 78 61 64

65 63 69 6D 61 6C 20 64 75 6D 70 2E 0D 0A . .

Appendix C of the Reference Guide contains tables of hexadecimal codes and ASCII characters.

Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)

Oki ML390 User Manual

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