If you are encountering issues with your printer, using the below debug command can help you discover what type of issues you are encountering:

1. Type debug at the MS-DOS prompt
2. At the - type in i379:

Anything less than eight for the second digit means printer error, first letter should be D, otherwise you will have some sort of error with the printer.

         1  -  0001        9  -  1001
         2  -  0010        A  -  1010
         3  -  0011        B  -  1011
         4  -  0100        C  -  1100
         5  -  0101        D  -  1101
         6  -  0110        E  -  1110
         7  -  0111        F  -  1111

Example:

d = 1101 = (1)Selected  (1)No paper error (0)Printer Acknowledged   (1)Not busy

Note: To get out of the debug mode, hit "q" to quit.