KaVo ORTHOPANTOMOGRAPH OP 3D Pro, Service Manual, Page: 174 / 192

7 Error codes and troubleshooting
166
 If the LED now comes on, replace the
connector to JG206 and remove JA206
from EA200 and short circuit pins 1 and
2.
  If the LED does not come on, re-
place cable JA206

JG206
  If the LED comes on, replace
connector to JA206, remove
JA207 from EA200 and short cir-
cuit pins 1 and 2.
 If the LED does not come
on, replace cable be-
tween EA200.
 If the LED comes on, re-
place connector to JA207
and short circuit pins from
J1003 (back of column)

If the LED does not come
on, replace cable JA207-
J1003.

If the LED comes on, re-
place external exposure
switch.
If D5 does not come on when the exposure
switch is pressed, connect JG206 and shortcut
pins 1 and 2 with a jumper.
If LED D5 comes on, set the unit to imaging
mode (CT or Pan), disable movements and then
check status the of the PREH_ENA LED (D6).
 If the LED D6 does not come on when ex-
posure switch is pressed, check system-
status, using the s2terminal, that the
exposure switch is detected when it is
pressed.
  If not, check the condition of the
exposure switch, EA200, EA300
and the cabling between them.
 If the components are
OK, replace R3400.