KaVo ORTHOPANTOMOGRAPH OP 3D Pro, Service Manual, Page: 158 / 192

7 Error codes and troubleshooting
150
SOLUTION E
Use service program “readadc” to determine
whether the temperature is measured correctly.
- ADC value 111 corresponds to the maxi-
mum allowed temperature (75 deg Celsi-
us). Lower ADC values indicate a
incorrectly calibrated measurement. Ad-
just trimmer R66 in the EG200 XRAY IF
board until approximately 200 is read as
ADC value at room temperature.
- ADC value 255 indicates the temperature
sensor (connected to EG200/JG217) be-
ing loose or broken. Check connection and
replace the sensor if broken. The resist-
ance in the sensor should be roughly 4.7
kOhm.
Generator temperature
sensor
is broken
CAUSE A
The generator temperature sensor is broken or
loose.
SOLUTION A
Check that the generator temperature sensor is
properly connected. The sensor is connected to
JG217 in the EG200 X-RAY IF board and should
have a resistance of about 4.7 kOhm at room tem-
perature.
Service period has expired and unit need maintenance
CAUSE A
The service reminder timer has expired (by default
one year after last service).
SOLUTION A
Carry out annual service as lined out in section 9
Maintenance Procedure. Mark service as done us-
ing the “indicator” s2terminal service command.
End user quality assurance is needed to retain image quality
CAUSE A
The quality assurance timer has expired (by default
180 days after last 3D QA).