Panasonic Facsimile UF-590, Service Manual

Page: 187 / 298

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Transmit Mechanism Sensors
The ADF Sensor (PC1), activated by Actuator A (224), detects the presence of documents on the ADF
Tray and multiple pages.
The
RP (Read Point) Sensor (PC3), activated by Actuator B (225), detects the lead and trail edges of
the document, controlling the reading position. The CPU determines that a document is jammed if
Actuator B is not tripped within a specified time after the ADF Roller starts feeding, and disengages the
ADF Roller by reversing the Transmit Motor direction.
The
ADF Door Sensor (PC2), activated by ADF Door Actuator (226), halts all scanning operations
when the Control Panel Unit is opened.
Verification Stamp Unit
The Verification Stamp Unit stamps an “X” mark on the front of the document after the document is
successfully transmitted or stored. It consists of the
Stamp Head (325), Stamp Holder (326) and Stamp
Solenoid (327).
Scanner Block (321)
The Scanner Block consists of three mirrors, a Lens , and a CCD PC Board (1014).
• The mirrors, Mirror 1 (334), Mirror 2 (335) and Mirror 3 (336) reflect image information, in the form of
light, through the Lens.
• The Lens focuses the image information and passes it to the CCD.
• The CCD , mounted on the CCD PC Board, converts the image information into an electronic signal.