Ke-Fong Lin,
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please take a closer look, if some components are not installed in the newer one. (Should be according to newer manual.) The F&I BD is on the left side. I've added a screenshot schematic 10 for B040000-up:
/g/TekScopes2/album?id=280676
The newer manual only states 50cm/s stored writing speed. Old version was 250!
The newer manual can be obtained from Artek Media.
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Stefan