Technical data

11.1.3.2 How to Troubleshoot Printer Communications Problems
After determining which system controls the printer port, follow these steps.
Step 1: Check port characteristics
Compare the LAT port characteristics with those listed in the DECprint
Supervisor for OpenVMS Software Installation Guide. To view the port
characteristics, issue the SHOW PORT command at the Local> prompt or
the TSM> prompt.
Step 2: Use procedures in Section 11.1.1
Follow the steps in the appropriate section:
• For a new printer, Section 11.1.1
• For a printer that has stopped printing, Section 11.1.2
If you follow these procedures and the printer is not printing, go to step 3.
Step 3: Regain control of the LAT port
You may need to disconnect a symbiont process that controls the port connected
to the printer. For example, an unsupported version of the symbiont software
might not disconnect after it gains control of the port. Disconnect the symbiont
process with the following command:
Local> SET PRIVILEGED
Password>
Local> LOGOUT PORT port_number
You need privileged status on the LAT node to execute this command.
11.1.3.3 Common LAT Error Messages
The following list contains common error messages received in a network
environment. The error message prefix is DCPS$. The severity level is not
indicated. The messages are arranged alphabetically by ident-string. (Refer to
the DECprint Supervisor for OpenVMS User’s Guide for an explanation of the
error message format.)
DCPS$_CONAPPLICATION, Connection request is not to a LAT applications
port
Explanation: This message usually occurs when a LAT port is not
reserved as an applications port, and another device is connected to
the port that is requested by the printer. The LAT configuration file
LAT$SYSTARTUP.COM should contain a line similar to the following with
the /APPLICATION parameter.
SET PORT LTAnnn:/NODE=server-name/PORT=port-name/QUEUE/APPLICATION
To avoid this problem, specify a higher port number for the printer.
Troubleshooting Procedures 11–11