If the error is displayed, contact Technical Service.
9.2.7.8
E757: Brown out alarm /
E766: Generator board reset due to a brown-out /
E767: Generator board reset due to a low voltage detection /
E768: Generator board reset due to a watchdog timeout /
E769: Generator board reset due to a stack overflow
These messages are displayed when the Generator board microcontroller is reset
due to the displayed issue.
If the error is displayed, contact Technical Service.
9.2.7.9
E758: Alarm “No X-ray” /
E761: Alarm “No X-ray emission”
These errors are displayed when the anodic current has been interrupted during
or at the beginning of the emission and may indicate that the Generator board is
in a safety status (eg. Due to a discharge inside the tubehead, a broken tube or any
other tubehead damage).
Error E761 may be displayed / associated with other errors (i.e. E362 and E760) that
can explain the main cause of the X-ray interruption occurred during the previous
exposure (refers also to the associated error paragraph).
In order to reset these errors:
1.
Switch OFF the unit and wait at least 4 minutes.
a.
Switch ON the unit, perform an exposure and verify if the error is still
present.
b.
Switch OFF the unit, wait at least 4 minutes and switch it ON again: verify
that the pre-heating parameters stored in the MCU EEPROM memory
matches the ones listed in the equipment parameters table (supplied as
paper copy with the unit documentation – see paragraph 14.1) (see
paragraph 8.4); correct them and verify if the error is still present.
2.
With the unit switched OFF (at least for 4 minutes), verify the proper connection
of the connectors X56 and X57; fix them, switch ON the unit and verify if the
error is still present.
3.
With the unit switched OFF (at least for 4 minutes), perform the following tests:
a.
Verify the primary winding continuity (max Ohmic value ≤ 0.5Ω) on the pins
X56-1 and X56-2
b.
Verify the filament continuity (max Ohmic value ≤ 0.5Ω) on the pins X57-5
and X57-6
c.
Verify the mA feedback Ohmic resistance on the pins X57-1 and X57-4, it
should be between 326Ω ÷ 334Ω.
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