iv
6.2 Initial Checklist ................................................................ 188
6.3 Troubleshooting the Centronics (Parallel) Interface ....... 188
6.4 Troubleshooting the RS232C (Serial) Interface .............. 190
6.5 Error Signals M8400RV and M84S Series Printers
(Some procedures are not NA for M-8459S) .................. 191
6.6 Error Signals CL408/412 ................................................ 192
6.7 Error Signals CL608/612 (VA) ........................................ 193
6.8 Error Signals XL400/410 ................................................. 194
7. Custom Protocol Command Codes ........................................... 197
7.1 Description ...................................................................... 197
7.2 Download Command Structure ....................................... 198
7.3 Download Procedure ...................................................... 199
8. Custom Characters And Graphics ............................................. 201
8.1 Custom-designed Character Example ............................ 201
8.2 PCX Graphics Example .................................................. 211