Pro 7900 and 9900 Field Repair Guide 10/6/10
Sensors, Motors, Solenoids, and Fans Printer Component, Software Item, LCD Display, Printer Button Page 437.
Encoders: Carriage Encoder (CR Encoder)(Carriage position and
dot timing)
Paper Feed Encoder (PF Encoder) (Paper advance
timing).
Pressure Pump Encoder (Detects the rotation of the
Pressure Pump Motors)
Platen Gap Encoder (Detects the rotation of the Platen
Gap Motor)
Pinch Roller Encoder (Detects the rotation of the Pinch
Roller Motor)
Rewind Motor Encoder (Detects the rotation of the
Rewind Motor)
Cutter Encoder (Detects the rotation of the Cutter
Motor)
Flushing Box Encoder (Detects the rotation of the
Flushing Box Motor)
Cap Motor Encoder (Detects the rotation of the Cap
Motor)
Paper Sensors: RearAD Detects the trailing edge of paper
EdgeAD(detects paper width and leading edge)
Paper Thickness Sensor (2 Sensors) (Detects paper
thickness and Paper Release Mecha-
nism open or closed)
Auto Alignment Sensors: Ink Mark Sensor (Reads bar code, Auto alignments)
Pressure Sensor Ink System Pressure Sensor (Ink Press) (Detects the
Ink System pressure)
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