IBM 6587 User Guide - Page 70
Parallel Port, Problems, Action, Serial Port Problems, Printer Problems
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Parallel Port Problems The number of parallel ports displayed is less than the number of parallel ports installed. Action Verify that: 1. Each port is assigned a unique address. 2. The parallel-port adapter, if you installed one, is seated properly. If the items above are correct, have the computer serviced. Serial Port Problems The number of serial ports displayed is less than the number of serial ports installed. Action Verify that: 1. Each port is assigned a unique address. 2. The serial-port adapter, if you installed one, is seated properly. If the items above are correct, have the computer serviced. Printer Problems The printer does not work. Action Verify that: 1. The printer is turned on and is online. 2. The printer signal cable is connected to the correct serial or parallel port on the system. (For the location of the serial or parallel port, see Setting Up Your Personal Computer.) Note: Non-IBM printer cables might cause unpredictable problems. 3. You have assigned the printer port correctly in your operating system or application program. 4. You have assigned the printer port correctly using the Configuration/Setup Utility program. If the items above are correct and the printer still does not work, run the tests described in the manual that comes with your printer. If the tests show the printer is OK, have the computer serviced. 60 Using Your Personal Computer