IBM 6500-V10 Maintenance Manual - Page 194

General Symptom List Table 5. General Symptom List Symptom Corrective Action Characters or dots are missing, smeared, too light, or too dark, or the output is missing entire dot rows (continued) 9. Remove the paper guide assembly or pedestal top cover. Make sure connectors P105 and P108 (and P115 and P122 on -v20 models) have good connections at the shuttle frame assembly. Make sure all cable connectors have good connections on the power supply board. 10. Print out the printer's configuration (refer to the User's Manual). Call support to confirm the correct microcode levels, especially the EC and DC levels. If the code levels are incorrect, download the correct microcode (page 231). 11. Power on the printer. If the problem still occurs, check the hammer bank logic cable and the hammer bank power cable for shorts (page 254). 12. Plug in the printer and power it on. If the problem still occurs, replace the shuttle frame assembly. 13. Plug in the printer and power it on. If the problem still occurs, the controller board or microcode is suspect. Do the following: 14. Save the printer configuration values. (Refer to the User's Manual.) 15. Clear NVRAM (page 237). 16. Download and install the latest code from IBM First (page 231). 17. Power on the printer in download mode and load flash memory (page 238). a. If you encounter loading problems, go to the appropriate error code for resolution. b. If you encounter the failure or message that brought you to this procedure, replace the controller board (page 319). After replacing the controller board, DO NOT make the printer READY, but proceed immediately to the next step. 18. Download and install the latest code from IBM First (page 231). 19. Power on the printer in download mode and load flash memory (page 238). 20. If you encounter the failure after replacing the controller board, reinstall the original controller board and contact your DDS and Second Level Support. 194