Tray Motion
The STEPPER MOTOR is responsible for the slide tray movement. To move the tray one slide forward or reverse
47 steps are necessary in case a tray for 80 slides is used and 27 steps in case a tray for 140 slides is used.
The tray movement is controlled by the TRAY MOTION CONTROL PCB. This PCB contains two optical sensors,
one for the code wheel and one for the Zero Position Gear.
This PCB is sending following feedback signals to the MICROCONTROLLER:
-
Tray motion direction (forward or reverse)
-
One pulse for each step of the STEPPER MOTOR
-
Tray zero-position signal in case the tray is in the zero position
If the STEPPER MOTOR moves one step, a pulse will be send back from the TRY MOTION PCB to the
MICROCONTROLLER after the step is done
.
If these pulses are missing, the MICROCONTROLLER assumes that the tray is not able move. The transport
stops immediately. A failure code is written into memory, the projector do not operate, the power LED is blinking
The projector must be deenergized. The jam must be cleared. As soon as the problem is solved, the projector
should operate after switching on again.
The DIR STEP SENSOR is a special optical device which generates two independent output signals:
-
step pulses
(count signal for the MICROCONTROLLER to calculate the tray position)
-
direction signal
(low signal for forward steps and high signal for reverse steps)
Tray Control PCB
Direction
+ Step
Sensor
Zero-Pos.
Sensor
Tray Zero
Direction
Tray Step
Slide
Tray
figure 3-6
Service Manual
SM 2547-1
03/98
3-8
Kodak AG, Stuttgart
Содержание Ektapro 4020
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Страница 88: ...CAM figure 4 36 GLIDING SURFACE LENS MOUNT figure 4 37 Service Manual SM2547 1 03 98 4 30 Kodak AG Stuttgart...
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Страница 97: ...Switch on Procedure Problems SM 2547 1 Service Manual Kodak AG Stuttgart 5 9 03 98...
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Страница 100: ...Lamp Problems 4020 5020 7020 9020 and 9020 CINE Service Manual SM 2547 1 03 98 5 12 Kodak AG Stuttgart...
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Страница 106: ...Switch On Procedure Service Manual SM 2547 1 03 98 5 18 Kodak AG Stuttgart...
Страница 107: ...Switch On Procedure complete No Keyboard Function SM 2547 1 Service Manual Kodak AG Stuttgart 5 19 03 98...
Страница 108: ...No function with REMOTE CONTROL IR Remote Control Service Manual SM 2547 1 03 98 5 20 Kodak AG Stuttgart...
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Страница 111: ...Cable Remote SM 2547 1 Service Manual Kodak AG Stuttgart 5 23 03 98...
Страница 112: ...No Slide Transport forward reverse and other projection problems Service Manual SM 2547 1 03 98 5 24 Kodak AG Stuttgart...
Страница 113: ...Shutter Problems SM 2547 1 Service Manual Kodak AG Stuttgart 5 25 03 98...
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Страница 115: ...Fan Problems SM 2547 1 Service Manual Kodak AG Stuttgart 5 27 03 98...
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Страница 118: ...Wrong Transport Step by 80 140 SLIDE TRAY Service Manual SM 2547 1 03 98 5 30 Kodak AG Stuttgart...
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Страница 120: ...No Focus Actuation Service Manual SM 2547 1 03 98 5 32 Kodak AG Stuttgart...
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Страница 122: ...No Standby Function Service Manual SM 2547 1 03 98 5 34 Kodak AG Stuttgart...
Страница 123: ...Communication Trouble 4020 5020 7020 9020 and 9020 CINE SM 2547 1 Service Manual Kodak AG Stuttgart 5 35 03 98...
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Страница 126: ...AUTO FOCUS 5020 9020 and 9020 CINE No AUTO FOCUS Function Service Manual SM 2547 1 03 98 5 38 Kodak AG Stuttgart...
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Страница 134: ...LENS MOUNT GLIDING SURFACE figure 7 4 Service Manual SM2547 1 03 98 7 4 Kodak AG Stuttgart...
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Страница 136: ...CUSTOMER EQUIPMENT SERVICES KODAK AG STUTTGART GERMANY Kodak...