FrameMaker Ver.5.5(PC) EP1054/EP1085/EP2030 GENERAL, MECHANICAL/ELECTRICAL
98.04.24
M-22
1174SBM0902A
In the Auto Exposure Mode, the AE Sensor on the AE Sensor Board measures the intensity
of the light reflected off the original, which results in the black/white ratio of a 210-mm-wide
area from the reference position of the original being measured. According to this measure-
ment, 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 the Master Board which, in turn, varies the
duty ratio of the AVR Remote from it to vary accordingly the Exposure Lamp voltage.
9-2. AE Sensor
Original Density (B/W Ratio) High Low
Intensity of Reflected Light Low High
AE Sensor Board Output High Low
AVR Duty Increased Decreased
Exposure Lamp Voltage Increased Decreased
Control Signal ON OFF WIRING DIAGRAM
PWB-H
(AE Sensor)
PWB-A PJ9A-3 L H 4-F
AVR Remote
Signal (LA1)
PWB-A PJ14A-3 L H 6-D
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