IBM 4247-003 Maintenance Manual - Page 555

Detail Note B If the power to the printer is interrupted during this phase, the computer screen message will change to: Printer doesn't respond: check connection! This indicates that the CRC checking was not completed. To prevent any printer problems during operation, you should repeat the download process from the beginning of the procedure. Detail Note C During the downloading, an error message can appear: FOUND ERROR xx Table 111. Error Codes xx Meaning 1 Illegal command detected 2 Error found in boot sector checksum 3 Error found in CRC 4 Error found during erase and write of flash memory If an error message appears, power-off the printer. Corrective actions include: v Reseat or replace the parallel cable v Retry copying code from the diskette or the database. Retry the download procedure from Step 2. If the Error message repeats, you will need to replace the logic board and try again. 7. When the download is completed, power-off the printer and remove the parallel cable. Install the LAN card if needed. Appendix C. Flashing the Memory of the Model 003 555