Harvard H-10 Wiring
The Harvard H-10 circuit board will require removing should you need to change the drive belt. Here is a photo of the wiring, which might help when soldering the wires back on.
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Harvard H-10Inside Look
PCB and Chipset
Cassette Compartment
Audio Head
Volume Controls
Drive Belts
Pushbutton Mechanism
Wiring
Battery Compartment
Carry Case
Headphones
Unboxing
User Manual