Roland Advanced Jet AJ-1000 Service Notes page 211

ENCODER MODULE
It detects the scanning coordinate.
HEAD UP/DOWN SENSOR
It detects the origin of the Head Height direction
COVER SENSOR (TAKE-UP UNIT)
It detects whether the Cover is opened or closed.
FRONT DANCER ROLLER SENSOR
It detects the limit position of the Rear Dancer
Roller.
THERMISTOR (HEAD BOARD)
It measures the temperature around the
Head Board.
PAPER SIDE SENSOR
It detects the left and right edges of
.
the media.
COVER SENSOR (FEED UNIT)
It detects whether the Cover is opened or closed.
REAR DANCER ROLLER SENSOR
It detects the limit position of the Rear Dancer
Roller.
5-4