Ricoh PRIPORT VT 2000 Series Service Manual page 153

28 February '91
9.3 VACUUM UNIT DRIVE MECHANISM
[D]
[E]
[F]
The vacuum fan [A] holds the paper against the transport belts [B]. The
transport belts move the paper to the delivery table.
A fixed wing guide [C] at each end of the vacuum unit helps keep the back
side of the printing paper clean.
When the main motor [D] turns on, the gear [E] mounted on the main motor
shaft drives belt [F], gears [G] and [H], pulley [I], drive belt [J], pulley [K],
and drive shaft [L]. This drive shaft turns the transport belts [B].
NOTE: The VT2100/VT2130/VT2150 use a gear instead of a timing belt [F].
The first and second paper exit sensors [M] and [N] check for paper jams.
The paper exit jam check is done when printing pressure is applied and the
printing pressure sensor is interrupted.
When 2nd Drum
Position sensor is ON
When 1st Drum
Position Sensor is ON
[I]
[H]
[G]
1st Paper Exit Sensor [M] 2nd Paper Exit Sensor [N]
On : Correct
OFF:Paper Wrap
-----
-----
[M]
[L]
[J]
[K]
OFF:Correct
ON :Delivery Miss
ON :Correct
OFF:Paper Wrap
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[N]
[B]
[A]
[C]