Error codes for Ricoh

if you have copier, printer or any Ricoh MFP product and you are learning with small group in classroom how to identify issues with your printer.
you will need this application to know what's each SC "service code" means.
we listed a lot of ricoh models and codes for offline users for FREE FAIR USE.
for sure we made some searches from internet to collect this information and share it with learners and students.