Do not adjust the setting because the punch unit is adjusted in the factory. If replacing the parts of the punch unit is required, replace the whole unit.
- Do not disassemble the punch unit. This unit is precisely adjusted in the factory.
 - Do not drop or give a shock to the unit when you replace it. The unit could be damaged.
 
- Remove the following covers. Rear Upper Cover, Rear Lower Cover, Upper Cover
- Rear Upper Cover
 - Rear Lower Cover
 
 - Registration sensor bracket [A] (
x 2,
x 3,
x 2)
 - Stepper motor bracket [A] (
x 1,
x 2)
 - Remove punch unit control board [A] (
x1,
x2).
 - Pull out the punch unit [A] (
x 2,
x 2,
x 2)