Kodak Ektapro 4020, Service Manual

Page: 43 / 136

Slide Change Sequence
Projector Status:
- SLIDE LIFTER down
- SHUTTER is open
- SLIDE is in GATE
- LAMP is energized
Start: “Forward”/"Reverse" BUTTON is pressed.
Signal from: P-Bus, Remote Control or Timer
The SHUTTER SOLENOID is deenergized.
The SLIDE LIFT MOTOR rotates clockwise to move the SLIDE LIFTER
up (max. 805 steps = one SLIDE LIFTER cycle).
The SLIDE LIFTER is in the up position when the CAM SENSOR
signal changes from not actuated to actuated.
If no: the failure routine begins after 805 steps a without signal change.
If yes: Starts the tray Motion. See page 3-10.
For details see page 3-10.
The SLIDE LIFT MOTOR moves clockwise to move SLIDE LIFTER
down. The MOTOR stops when signal changes from actuated to not
actuated.
When a TIMER is in use, a slide advance forward is done each time
after the selected interval is reached (Model´s 4020, 7020 external
timer, Model 5020, 9020 and 9020/CINE internal timer).
The slide is projected.
START
Close Shutter
Switch Autofocus Off
CAM
Sensor Signal
0 - 1
?
Yes
No
max. 805 Steps of
Slide Lift Motor
Start Tray Motion
Next slide position
Slide Lift Motor On
Slide
in Gate Sensor
actuated
?
Yes
No
Switch on Autofocus
Open Shutter
Timer
activated
?
Yes
No
End
Power LED blinking
Slide Lift Motor off
CAM
Sensor Signal
1 - 0
?
Yes
No
Slide Lift Motor off
Projector does not
operate
Write Failure into
Memory
figure 3-5
SM 2547-1 Service Manual
Kodak AG, Stuttgart 3-7 03/98