IBM 6500-V15 Maintenance Manual - Page 200
Printer Operation
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Symptom Downloads consistently fail General Symptom List Table 5. General Symptom List Corrective Action Printer Operation NOTE: Most download problems are detected by software during the dowload procedure and communicated by LCD messages. If downloads fail consistently with no messages or with erratic messages, suspect a hardware failure. 1. Power off and unplug the printer. Remove the paper guide assembly or pedestal top cover. Check the I/O cable connections from the host to the printer. Check the parallel cable connection at J112 on the controller board. Inspect all cables for damaged, bent, broken, or burnt pins. Replace any damaged cables. Reconnect all I/O cables; make sure all connections are clean and tight. 2. Remove the flash SIMMs. Inspect the flash SIMM sockets on the controller board. If any socket pins are bent or damaged, replace the controller board. After replacing the controller board, DO NOT make the printer READY, but go to the next step immediately after replacing the controller board. 3. Download the latest code from IBM First (page 231). Plug in the printer and power it on in download mode and load flash memory (page 238). 4. Check that customer has the right size SIMMs for the emulation. Install SIMMs that support the emulation software. 5. Power on the printer in download mode and load flash memory (page 238). If the download fails, activate the Boot Diagnostics Menu (page 221) and run MISC UTILITIES / RUN MEMORY TESTS. If memory tests OK, replace the flash memory with blank flash containing boot code and load flash memory again. 6. If memory does not test OK or if the download fails again, replace the controller board (page 319). After replacing the controller board, DO NOT make the printer READY, but proceed immediately to the next step. 7. Download and install the latest code from IBM First (page 231). 8. Power on the printer in download mode and load flash memory (page 238). 9. If you encounter the failure after replacing the controller board, reinstall the original controller board and contact your DDS and Second Level Support. 200