Service Manual

b)Go to next slide position

Start

Slide LIFTER Up

Next Slide

SM 2547-1

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.

Position

?

reverse

RANDOM ACCESS: The MICROCONTROLLER selects shortest distance to the next slide.

forwards

Tray Motor forward

Tray Motor reverse

More than

Yes

4 Step Signals

 

 

 

 

missed

 

 

 

 

?

No

 

 

 

 

 

 

 

Transport Failure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power LED Blinking

 

 

 

 

 

 

 

 

 

 

 

 

No requested

 

No

Position

 

 

 

 

 

reached

 

 

 

 

?

 

 

 

 

 

 

Yes

 

 

 

 

Set Tray Position

 

 

Write failure

to next slide position

 

into Memory

 

 

 

 

 

 

 

 

 

Slide LIFTER down

 

 

Projector

Slide projected

 

 

inoperable

END

figure 3-8

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.

03/98

3-10

Kodak AG, Stuttgart

Page 46
Image 46
Kodak 9020/CINE service manual Go to next slide position Start, Access