FrameMaker Ver.5.5E(PC) EP3000/EP3010 GENERAL, MECHANICAL/ELECTRICAL
98.06.10
M-27
1173SBM1202A
In the Auto Exposure Mode, the AE Sensor on AE Sensor Board 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 volt-
age is automatically increased or decreased so that copies of consistent quality are pro-
duced.
The output from the AE Sensor is applied to the Master Board which, in turn, varies the
duty ratio of the AVR Remote which varies the Exposure Lamp voltage accordingly.
12-2. 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 PJ5A-2
Pulse output
8-F
AVR Remote
Signal (LA1)
PWB-A PJ36A-4
L
H
8-C