Kodak Ektapro Slide Projector 4020 - Manual (Page 42)

Switch On / Initialize Procedure
Projector Status: Mechanic position is not known
Projector is energized
The MICROCONTROLLER starts the initialization routine:
- load the look-up tables
- look at the accessory slot and projector address
- sets the ECONOMY LAMP RELAY to 82V
- completes a Hardware reset
SLIDE LIFT MOTOR rotates clockwise (max. of 805 steps = one SLIDE
LIFTER cycle).
If SENSOR SIGNAL changes from not actuated to actuated, the SLIDE
LIFTER is in up position.
Yes = Start tray MOTION.
No = Begin a failure routine, after it has advanced 805 steps without
sensor signal change.
slide tray moves forward about 3,5 slides (with software version above
4.2).
Details about tray motion can be obtain from page 3-9.
If the ZERO SENSOR is not actuated, the tray reverses
If the ZERO SENSOR is not actuated, the slide tray continues to
advance.
The SLIDE LIFT MOTOR moves clockwise.
When the CAM SENSOR changes from actuated to not actuated, the
LIFTER is in the down position.
If the SLIDE IN GATE SENSOR is actuated, the SHUTTER opens.
No
Yes
No
START
Microcontroller
is active
Slide LIFT MOTOR On.Move
LIFTER to Up Positon
CAM Sensor
Signal
0 - 1
Move Slide Tray
about 3 Slides forward
Zero
Sensor actuated
?
Reverse Slide Tray
Zero
Sensor actuated
?
Stop Tray Motor
Slide LIFT MOTOR On
Slide LIFTER to Down Positon
CAM Sensor
Signal
1 - 0
Slide in Gate
Sensor actuated
?
Open Shutter
Autofocus On
Projector Ready
for Operation
END
Stop LIFT MOTOR
Power LED Blinking
Write the Failure into
Memory
Projector does not
Operate
Stop LIFT MOTOR
No
Yes
No
Yes
Yes
No
Yes
No
Stop LIFT MOTOR
figure 3-4
Service Manual SM 2547-1
03/98 3-6 Kodak AG, Stuttgart