Lantronix MPS100 EPS Reference Manual - Page 112
Error Messages
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Troubleshooting Macintosh Printing AppleTalk Host Setup Table 10-1: Troubleshooting Macintosh Printing, cont. Problem Possible Cause Explanation/Remedy Unreadable error mes- The baud/parity setsage on the printer, or tings don't agree. serial errors on the Show Port Counters display. Many printers can be configured via PostScript as well as by switches on the printer itself. PostScript configuration takes precedence over the switches. If you are unsure of the current saved setup, check your printer manual for a way to force the printer to obey the switch settings. This typically involves switching the printer to LocalTalk mode for a minute and then back to serial mode. A readable error that says something like "Unknown command ." There may be a flow control problem. If the Server never sees the printer flow control, it may overrun the printer buffer resulting in corrupt data. Many printers can be configured via PostScript as well as by switches on the printer itself. If you are unsure of the current saved setup, check your printer manual for a way to force the printer to obey the switch settings. This typically involves switching the printer to LocalTalk mode for a minute and then back to serial mode. The first print job prints fine, but other print jobs are garbled or lost. The printer cannot distinguish between jobs. Make sure PostScript is enabled on the Server service- this ensures that the Server will not start a new job before the last job is finished. It will force a Ctrl-D to the printer before beginning a new job, and wait for an acknowledgment before continuing. Note: See your printer's documentation for more information on printer configuration and any printer-specific errors. 10.3.1.1 Error Messages Macintosh print spoolers (for example, PrintMonitor or LaserSpool) typically report errors, possibly via a "distressed printer" icon in the upper right part of the screen. If you see a similar indication on your screen, open the spooler window and check for an error message from the printer. If you can connect to the printer service on the Server via LAT or TCP/IP, try typing some keys to the printer and pressing Return. The printer will typically respond with a PostScript error message like that shown in the following figure. Figure 10-4: PostScript Error Message %% Unknown command . %% Flushing to end of job. If the message is legible, the printer is apparently receiving and sending data correctly. Press Ctrl-D to signal the end of job (and clear the error condition), and then disconnect from the service without typing any more data. Note: Be sure to check that any serial adapters conform to the pinouts shown in your Installation Guide. 10-4