Let's me explain this matter. HTH has been changed a model of printer from MP1600L to be MP2051, 430DN for more year. Every branch still use the old driver(MP1600L)
Ricoh MP2001 can use a driver of MP1600L. You just create a name of printer for CRTT site to be PGXCxx then fixed an IP address with 192.168.148.70 , use a same driver MP1600L