Pioneer CX-152A (CXK-700, CXM-114) Cassette Module repairing

Repairing Pioneer CX-152A (CXK-700, CXM-114) Cassette Module, found in:
Pioneer KP-A200, KP-A300, KP-4400, KP-4430, KP-4600, KP-4700
Pioneer KPH-4800, KPH-4830
Pioneer KEH-7700, KEH-7730
Very complex but a true engineering art, electronically controlled reverse.
What to check:
1. Belt square 1mm 180 / 185mm must not be loose
2. All the springs are present
3. All the screws are present
4. The black plastic holder at the front needs to be reattached with thread glue
5. Are the micro switches OK?
etc
Manual for this unit:
www.aatomike.e...