Kodak EKTAPRO 9020/CINE Service Manual page 46

Service Manual
b) Go to next slide position
Start
Slide LIFTER Up
Next Slide
Position
?
forwards
Tray Motor forward
More than
4 Step Signals
missed
?
No
No
requested
Position
reached
?
Yes
Set Tray Position
to next slide position
Slide LIFTER down
Slide projected
END
figure 3-8
03/98
reverse
Tray Motor reverse
Yes
Transport Failure
Power LED Blinking
No
Write failure
into Memory
Projector
inoperable
Projector Status: There is a slide in the gate and it is projected.
Start action: The forward or reverse BUTTON is actuated
or next slide is selected with RANDOM
ACCESS.
See Slide Change Sequence, page 3-7.
RANDOM ACCESS: The MICROCONTROLLER selects shortest
distance to the next slide.
The MICROCONTROLLER energizes the TRAY MOTOR for 47 steps
(80 tray) or 27 (140 tray) for each slide.
The MICROCONTROLLER checks feedback from tray MOTION
CONTROL CIRCUIT.
If more than 4 feedback pulses are missed, exit to the failure routine.
For RANDOM ACCESS: The TRAY MOTOR ON until the position is
reached.
For FORWARD/REVERSE BUTTONS:
- tray moves only for one slide
- slide is projected
- if transport button is still pressed,
a slide is lifted up and the tray moves until button is released but
stops at the ZERO POSITION.
The MICROCONTROLLER sets the next position into memory.
The SLIDE LIFTER Down procedure starts.
For details, see Slide Change Sequence.
3-10
SM 2547-1
Kodak AG, Stuttgart