IBM 6500-V5P Maintenance Manual - Page 148

Operator Panel Message B49 ERROR: SDRAM # LOGICAL BANKS* B50 ERROR: SDRAM LOGIC COMB BANKS* B51 STATUS: XX% LOADING Display Messages Table 3. Message List Explanation Corrective Action Printer boot initialization tests detect incorrect SDRAM. Printer boot initialization tests detect incorrect SDRAM. Status message: printer boot-up routines are loading printer system software into flash memory and SDRAM. Cycle power. If the message appears, replace the controller board (page 319). Record the message and return it with the defective board. 1. Cycle power. If the message appears, the controller board or microcode is suspect. Do the following: 2. Save the printer configuration values. (Refer to the User's Manual.) 3. Clear NVRAM (page 237). 4. Download and install the latest code from IBM First (page 231). 5. 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. 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). 8. If you encounter the failure after replacing the controller board, reinstall the original controller board and contact your DDS and Second Level Support. No action required. 148