Ricoh FT8680 Service Manual page 143

31 July 1995 ARDF
16.9 TRANSPORT UNIT LIFT MECHANISM
[B]
[C]
[A]
[D]
[E]
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To make opening the transport unit easier, there are six balance springs [A].
Three springs are on the right and three on the left.
There is a lift sensor [B] to detect if the transport unit opens. When the
transport unit is opened, the feeler [C] actuates the lift sensor.
To keep the transport belt unit parallel to the exposure glass, lift springs [D]
and lift-up springs [E] are installed to the transport unit base and the transport
drive unit at the point where the two units join.
The lift springs reduce transport unit weight load, to enable everything to
remain parallel.
The lift-up springs prevent flutter damage when the transport unit is open.
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