Tandy 1000 SL Technical Reference Manual page 384

straight in parallel.
ii) Hold the flat cable with fingers or with a pair of tweezers and
fit the core wires in line against the 57 receptacle.
iii) Push the cable into the receptacle securdjy not to be bended nor
folded.
iv) Depress the center area of the flat cable- against the frame.
v) Confirm visually that the core wires are not bent nor jut out.
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