Sequential Explanation - Minolta EP1080 Service Manual

4

SEQUENTIAL EXPLANATION

*Numbers given in rectangles
in msec.
A The power cord is plugged into the outlet.
Power cord is plugged in.
ON
DC24V for Drum heating (PU2)
ON
Drum Dehumidifying
Heater H2
ON
Paper Dehumidifying
Heater H3
B Power Switch S1 is turned ON.
S1 ON
ON
H2, H3
ON
DC24V (PU2)
ON
DC5V (PWB-C)
ON
Control panel
ON
The Cooling Fan turns at full speed.
Approx. 500
Approx. 500
ON
Scanner Reference Position Sensor PC81
If the Scanner is not at the home position, Scanner Motor M5
*
is energized to move the Scanner to the home position.
ON
Lens Reference Position Sensor PC90
If the Lens is not at the home position, Lens Motor M6 is
*
energized to move the Lens to the home position.
ON
Mirror Reference Position Sensor PC86
If the 4th Mirror is not at the home position, Mirror
*
Motor M7 is energized to move the Mirror to the home
position.
ON
Approx. 1,000
Starter setup and ATDC Sensor automatic adjustment
Only when the Imaging Unit is new. I/U Fuse F4 blows when the
*
starter setup sequence is completed normally.
in the following flowchart are timer values
Only when Paper
Dehumidifying Switch S3 is ON
ON
The Cooling Fan turns at half speed.
ON
Fusing Heater Lamp H1
Prescan by M5
M-5