You can have error E350, E-350 or E350-001 on these copiers: Canon IR105, IR6020i, IR6000, IR5020, IR2200, etc...
E350 means there are faults on serial number (SN) PCB. A check is made at power-on
- Turn off the machine's main power switch.
- Replace the serial number PCB with a new one.
- Assemble the parts.
- Turn on the main power switch.
- One again, turn off and on the main power switch.
- Verify that the readings of the soft counters have been continued