Printer and Computer Not Communicating

Is there anyone in the 85363 zip code area that works on older Apple

equipment , in this case, a Personal LaserWriter? The computer recently

went through a diagnostic check and received some minor repairs,

which included a damaged printing command, but printer still doesn't

print. Ready Light comes on and all connections have been checked

and double-checked so the problem must be internal. Makes beautiful

copies when operating so I would like to repair it if possible.