Harvard H-10 Drive Belts
The Harvard H-10 tape transport mechanism requires two drive belts, where the smaller belt has approximately 86 mm circumference, and the larger main belt has 146 mm circumference. As you can see, in order to replace the belts, one has to first remove the PCB out of the way by desoldering some of the wires.
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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