CRANEX
®
Novus e 3. Circuit Boards - CCD Sensor / Filter
Service manual 59
3 Yellow +15V, +3V and –9.4V LED
CCD gate voltages
LIMITS:
+15V between +13.5V to +16.5V
+3V between +2.4V and +3.6V
-9V between -9.92V and -9.17V
Another required voltage is μC +3.3V. It is used to
power the microcontroller, +3.3VD_CCD.
CCD TxD and CCD RxD
Yellow Serial communication.
In normal operation they fl ash intermittently.
They indicate communication activity.
If CCD RxD is off (passive CCD sensor), CCD TxD
will also be off.
NOTE:
If CCD TxD is off, CCD RxD is on and
the CCD status LED fl ashes during and after image
capture it indicates that the CCD sensor tried to
receive the image, but the transmit communication
routine failed.
CCD Status 3-color It indicates that the CCD is connected, all the software
has been downloaded and it is ready to take an image.
Green Stand-by mode.
Yellow Image capture mode (power on).
Red In position but not yet ready, SW is being loaded.
Red fl ashing
Fatal SW error / communication routine failure after
an image has been taken.
If this happens, switch the unit off for 10 seconds and
then switch the unit on again.
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