IBM 6500-V10 Maintenance Manual - Page 161

Operator Panel Message HAMMER COIL BAD etc. Display Messages Table 3. Message List Explanation Corrective Action Hammer coil(s) number #, #, etc. failed the current test at power-up. Check that the hammer bank cables are connected. 1. Check the shuttle for electrical shorts (page 252). 2. Cycle power. If the message appears, replace the shuttle frame assembly. Record the message and return it with the defective assembly. 3. Power on the printer. If the message appears, the controller board or microcode is suspect. Do the following: 4. Save the printer configuration values. (Refer to the User's Manual.) 5. Clear NVRAM (page 237). 6. Download and install the latest code from IBM First (page 231). 7. 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. 8. Download and install the latest code from IBM First (page 231). 9. Power on the printer in download mode and load flash memory (page 238). 10. If you encounter the failure after replacing the controller board, reinstall the original controller board and contact your DDS and Second Level Support. 161