[Error content] Printer system error.
[Detail] Processed an invalid parameter.
[Solution] Restore power.
[Remarks]
The printer number in the error heading changes according to the
error.
[Cause] Printer system error.
[Response]
1. Restore power.
2. If it doesn't restore, replace P-909.
0704
Ishida WM-4000 Error Codes and Solutions (600-2099)