Summa S2 CLASS - 6.3 Cutter is unable to find the knife home position; 6.4 Up down encoder not working

S Class 2 cutter Service manual
Error codes 6-2
1. Remove the crashed media and restart the machine.
2. Lower the speed and/or the knife pressure.
3. Check whether the head moves smoothly (first turn the power off and position the
cam rollers on the outer edges of the media).
4. Check the y-axis motor and the encoder cables.
5. Replace the Y-motor.
6. Replace the PCB.
6.3 Cutter is unable to find the knife home position
Cause:
The machine doesn’t find the home position for the tangential knife.
Action:
1. Check whether the knife holder turns smoothly when the power is switched off. If
not, something is wrong with the T-head. Replace the head or check the
mechanical parts of the head.
2. Check the connection cable, which runs from the head to the PCB.
3. Check the machine with another head.
4. Replace the flat cable which runs from the head to the PCB.
5. Replace the main PCB.
6.4 Up down encoder not working
Cause:
The encoder which speeds up up/down movement does not function.
Action:
1. Check whether the knife holder goes up and down smoothly when the power is
switched off. If not, something is wrong with the head. Replace the head or check
the mechanical parts of the head.
2. Check the connection cable, which runs from the head to the PCB.
3. Up/down encoder is not working, replace encoder
4. Check the machine with another head.
5. Replace the flat cable which runs from the head to the PCB.
6. Replace the main PCB.