Contex SD One+ - Stepper Motor Assembly Replacement

Service Guide SD One+ 28
Stepper Motor Assy
Prerequisites.
Switch power off.
Raise CIS Bridge Unit as shown on page 11.
Remove RHS cover, see page 20.
1. Disconnect motor cables.
Release belt tension:
2. Loosen locking screw (don’t remove).
3. Push tension wheel upwards.
4. And tighten locking screw again.