Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL
97.04.01
M-26
1156SBM1102A
11-2. AE Sensor
In the Auto Exposure Mode, the AE Sensor on AE Sensor Board PWB-H measures the
intensity of the light reflected off the original, by sampling the black/white ratio of a
210-mm-wide area of the original being measured. According to this measurement, the
Exposure Lamp voltage is automatically increased or decreased so that copies of
consistent quality are produced.
The output from the AE Sensor is applied to PWB-A which, in turn, varies the duty ratio
of the AVR Remote which varies the LA1 voltage accordingly.
Original Density (B/W Ratio)
High
Low
Intensity of Reflected Light
Low
High
PWB-H Output
High
Low
AVR Duty
Increased
Decreased
LA1 Voltage
Increased
Decreased
Control Signal
ON
OFF
WIRING DIAGRAM
PWB-H
(AE Sensor)
PWB-A PJ3A-2
Pulse output
12-B
AVR Remote
Signal (PWB-J)
PWB-A PJ8A-13
L
H
45-H
