MX-7040N C1-01

[oeshuron]

C1-01 errors.

Replaced Process Frame (Drum Assy), Swapped Cleaner Drive Motors, New Main Charge Unit. Just threw C1-01 again. Any ideas?

[copiertec]

C1-01 errors.

Replaced Process Frame (Drum Assy), Swapped Cleaner Drive Motors, New Main Charge Unit. Just threw C1-01 again. Any ideas?

You say "Just thew C1-01again," is this the reason you replaced process frame because of the C1-01 code? Check out this link:
MX-6240, 7040 (Polaris) with error code C1-0X (various charger cleaner trouble)