Ricoh D391, Service Manual

Page: 457 / 490

S3 Paper Out Sensor: Tray A (S3 (INS))
S4 Paper Feed Sensor: Tray A (S4 (INS))
S5 Registration Sensor: Tray A (S5 (INS))
S6 Paper Set Sensor: Tray B (S6 (INS))
S8 Paper Out Sensor: Tray B (S8 (INS))
S10 Paper Feed Sensor: Tray B (S10 (INS))
S13 Registration Sensor: Tray B (S13 (INS))
S14 Inserter Transport Sensor (S4 (INS))
S19 Vertical Transport Sensor 1 (S19 (INS))
The three sensors S18 (INS), 19 (INS), and S20 (INS) are in the bookbinder but they are controlled by
the inserter control board.
Each sensor uses pulse counts to detect the leading and trailing edge of sheet of paper as it passes. If the
leading or trailing edge fails to appear or leave within the prescribed time (these time intervals are checked
against the prescribed time intervals stored in the CPU), this signals a paper jam.
• A jam alert shuts down operation of the inserter, the bookbinder, and the host copier.
• Once the jam is removed all covers of the inserter must be closed in order to resume operation.
• After all the covers are closed the inserter control board checks each sensor again for any remaining
paper.
Power Supply
The bookbinder supplies power to the inserter (DC +5V, +24V). The DC +24V power is supplied to the
clutches and motors. The DC +5V power goes to the sensors. Opening any cover of the inserter cuts the
power supply, closing the cover restores the power supply.
Inserter-C1 (D391)
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