"FILE REEL SERVO" is printed in white on the component side of this printed circuit card. There is a single white sticker with "1/37" handwritten on it. At the extraction end there are two round holes in the substrate. Surrounding those holes on the solder side there are several inspection stamps.
Manufacturer
Scientific Data Systems (SDS)
Identifying Numbers
Model number
HT18
Printed in white at extraction end of module on component side
Other number
129849
Assembly number printed at extraction end on component side
Other number
129878
Printed on edge of component side
Other number
SDS-68
Copyright number printed toward insertion end on component side
