Apple LaserWriter 12/640 PS - Manual (Page 147)

12 To test the connection, type the ping command from a workstation on the same
subnet as the printer:
ping printer_IP_name
If the ping command responds by telling you that the printer is alive on the
network, the address assignment was successful.
If the ping command does not respond, or tells you the printer was not
found, then the address assignment failed. Try the steps in this procedure
again, making sure you type the printer’s Ethernet address exactly as it
appears on the startup page. If it still doesn’t work, see the troubleshooting
suggestions in Chapter 13.
13 Test printing with the following command:
lp -d queue_name filename
If the test print doesn’t work
If the test document doesn’t print, check the configuration by following
these steps:
1 Check whether the rlp daemon is running. At the UNIX prompt, type
ps -e | grep rlp
If the process is running, you will see one or more lines of text; it it is not
running, you will see no response.
2 If rlp is running—that is, you saw one or more lines of text in step 1— kill the process
by typing
kill -15 process_number_ from_step_1
3 Make sure the following entry is in the /etc/inetd.conf file:
printer stream tcp nowait root /usr/lib/rlpdaemon
rlpdaemon -i
This line tells inetd to start the rlp daemon automatically when a print
request is made (if it’s not already running).
4 Make sure the following entry is in the /etc/services file:
printer 515/tcp spooler
122 Chapter 4