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● Check to make sure the printer is plugged in, is turned on, and is online.
● Check the status of network components in the print path. This includes whether
components are in-service and powered up.
● Check the configuration of network components in the print path. This includes IP
addresses and other settings. components include the PSA, the default gateway of
the PSA, the printer, and network infrastructure (routers, switches, cables, and so
forth.).
Cannot connect to printer-- connection refused by the printer (304)
Level: Critical Error
Category: Networking
Description: The printer was able to communicate with the PSA, but the printer refused
to allow the PSA to connect to the LPD port (port 515). HP networked printers only allow
8 simultaneous LPD connections and refuse connection number 9. HP printers with many
separate sources for LPD print jobs may generate this error.
Action: Verify that the IP address for the printer is for a printer (not some other device)
(in the web interface under Print Services-->Print Shares-->Properties). Some older HP
Jetdirect print server firmware (the network interface card for HP Printers) only allows
one connection; you should upgrade the Jetdirect firmware card to the latest available
version of firmware for the card. (Access the latest firmware at
http://www.hp.com.)
Detected printer problem (305)
Level: Critical Error
Category: Administrative
Description: The PSA was able to communicate with the printer, but the print job was not
printed due to one of the following reasons:
● no paper
● no toner
● printer door open