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A6 SLOW SCAN
The A6 SLOW SCAN CONTROLLER BD is a microprocessor controlled circuit board that controls the operation of the SLOW SCAN
CONTROLLER (SSC BD)
MOTOR. The A6 is responsible for accurately controlling all vertical movement of the PLATE in a constant linear motion perpendicular
to the direction of the LASER sweep.
The A6 communicates with the A1 MSC via an RS-232 serial link. It connects to the COIL BOARD in the SLOW SCAN MOTOR to drive
the COILS and read the HALL EFFECT SENSORS. It also connects to the ENCODER at the bottom of the SLOW SCAN MOTOR
ASSEMBLY.
A7 COIL BD
The A7 COIL BD is an integral component of the SLOW SCAN MOTOR. Six identical triangular shaped coils of wire are located on
the surface of the A7 BD. The coils are arranged around the central shaft of the SLOW SCAN MOTOR. At the outer edge of the coils
are 3 Hall Effect Sensors.
A8 CAM SENSOR (CAM BD) The A8 CAM SENSOR BD reads the position of the DUPLEX CAM based on whether the CAM FLAGS are blocked or unblocked. It
then reports the position to the MSC which directs the next movement of the DUPLEX CAM based on the current status.
See "Cassette Handling / Plate Handling."
A9 LASER REFERENCE
The A9 is a small BD whose function is to sample a percentage of the laser signal as it leaves the LASER. For each pixel captured,
(REF BD)
there is both image data and corresponding laser reference data. The laser reference data is a measure of the laser power at the instant
the image data was read.
M1 CAM MOTOR
See "Cassette Handling / Plate Handling."
The M1 is a brush type DC motor. Its function is to drive the DUPLEX CAM . It responds to commands from the MCPU to index the DUPLEX CAM to
each of the 4 CAM positions, Home (1), Pinch (2), Clamp (3), Pinch/Latch (4).
M2 LEFT and M3 RIGHT CASSETTE DRIVE MOTORs
These 2 MOTORS are used to load and unload the CASSETTE from the Load Station, running in both Load (forward) and Unload (reverse) directions.
They are controlled by the MSC which receives commands from the MCPU to load and unload the CASSETTE.
6–26
See "A7 COIL BD Operation."
See "A7 COIL BD Operation."
for a description of the operation of the A7 COIL BD.
12/12/94 – 1234563
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