HP LaserJet 4250 Service Manual - Page 116

Troubleshooting a firmware update The following table lists the causes and results of possible interruptions to the firmware update. Table 4-5 Troubleshooting a firmware update Cause The control panel cancelled a job. A break in the I/O stream occurred during a send. A power cycle occurred during RECEIVING UPGRADE . A power cycle occurred during UPGRADING PRINTER. A power cycle occurred during WAIT FOR PRINTER TO REINITIALIZE. Result No update occurred. No update occurred. No update occurred. No update occurred. Resend the update through a parallel port. The update is complete. NOTE Print jobs that are sent to the printer while an update is in process do not interrupt the update. The following table lists possible reasons for the failure of a remote firmware update and the corrective action required for each situation. Table 4-6 Troubleshooting a firmware update failure Cause Action The RFU file is corrupted. The printer recognizes that the file is corrupted and rejects the update. Download the file again and send the new file to the printer. Download the file from: http://www.hp.com/go/lj4200_firmware, http://www.hp.com/go/lj4250_firmware, http://www.hp.com/go/lj4300_firmware, or http://www.hp.com/go/lj4350_firmware. The RFU file contains the wrong printer model. The printer recognizes the model mismatch and rejects the update. Download the correct file and send it to the printer. Download the file from: http://www.hp.com/ go/lj4200_firmware, http://www.hp.com/go/lj4250_firmware, http://www.hp.com/go/ lj4300_firmware, or http://www.hp.com/go/lj4350_firmware. The upgrade is interrupted. See Troubleshooting a firmware update. A flash hardware failure occurred. The device might have a hardware failure. 102 4 Maintenance