Printer debug test
If you are encountering issues with your printer, using the below debug command can help you discover what issues you are encountering.
Note: With modern USB printers this debug routine no longer works and should only be used when troubleshooting older computer printers. See our printer troubleshooting steps for help with troubleshooting new printers.
- Type debug at the MS-DOS prompt
- At the - (hyphen) type in i379:
Anything less than eight for the second digit means printer error, first letter should be D, otherwise you will get an 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
d = 1101 = (1)Selected (1)No paper error (0)Printer Acknowledged (1)Not busy
Tip: To get out of the debug mode, hit "q" to quit.