CRANEX
®
Novus e
4. Troubleshooting
Service
manual
77
4.5 Problems after exposure
Error E4 (Tubehead too hot)
CAUSE A
The tube head has overheated (> 55°).
SOLUTION A
Wait for the tubehead to cool down.
When the tubehead reaches the right temperature the
error message will automatically disappear. Note that
this could take over 45 minutes.
Note that you will not be able to clear the error mes-
sage until the tube head has cooled to the correct tem-
perature. If the error message appears even if the unit
has not been used a lot, switch the unit off and then on
again.
CAUSE B
The tube heat signal is missing.
SOLUTION B
If the error message never clears check the path of the
tube heat signal. The tubehead and/or the generator
board may be faulty and must be replaced.
Vertical white stripes on the image
Probably due to tube arcing.
Refer to the trouble shooting information given in error
code E0.
Horizontal white stripes on the image
Recalibrate the CCD.
Refer to the section
Calibrating the CCD sensor
in the
installation manual.
Summary of Contents for Cranex Novus e
Page 1: ...Service Manual for the CRANEX Novus e Dental X ray Unit 208710 rev 1 2013 01...
Page 2: ......
Page 23: ...14 Service Manual 2 Unit Description CRANEX Novus e 2 3 Unit dimensions...
Page 34: ...CRANEX Novus e 2 Unit Description Service manual 25 2 7 Block diagram...
Page 35: ...26 Service manual 2 Unit Description CRANEX Novus e 2 8 Fuse diagram...
Page 40: ...CRANEX Novus e 3 Circuit Boards L1200 CPU Board Service manual 31 L1200 Block Diagram...
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Page 51: ...42 Service manual 3 Circuit Boards L1700 Connector Board CRANEX Novus e L1700 Block Diagram...
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Page 58: ...CRANEX Novus e 3 Circuit Boards P1910 PFC Board Service manual 49 P1910 Block diagram...