KaVo ORTHOPANTOMOGRAPH OP 3D Pro, Service Manual, Page: 134 / 192

7 Error codes and troubleshooting
126
7.4.7 Error 21 Calibration data receive
timeout
7.4.8 Error 22 Reading data from the 3D
sensor failed
CAUSE A
The main CPU did not receive calibration data from
the GUI PC in time.
SOLUTION A
• Timeout due to communication problems. See Er-
ror 100 for hints on how to trouble shoot cables and
Ethernet switch.
• Was the Cephalostat CPU recently replaced?
It may be loaded with invalid software for its pur-
pose and therefore interfering with other communi-
cation. Update the Cephalostat CPU with proper
software per instructions in pdf included in the em-
bedded software release package.
• Did the GUI PC start normally (or is the screen
dark and Error 21 reported in the s2terminal)?
If not, check that the GUI PC is powered properly.
Replace the GUI PC if needed. Note that the unit
then must be completely recalibrated. See 9 Cali-
bration and adjustment for further instructions.
CAUSE A
Bad contact in data cable connectors.
SOLUTION A
• Check the data cable (ribbon cable) is not dam-
aged and that it is properly connected both to the
3D sensor and to the R3220 main CPU board (con-
nector J3208). Reconnect or replace the cable if
needed.
• Clean the connectors with flux remover. Let dry
properly before reconnecting.
CAUSE B
Voltage level out of range or voltage missing.
SOLUTION B
Enable power for the 3D sensor using service com-
mand “panelpower conebeam 1”. Measure the dig-
ital voltage level from pin 1 and 2 on the sensor’s
power connector. The allowed range is 4.9…5.1 V.
If the voltage is missing, locate the point of failure
with the help of the schematic in 5.4.1 3D imaging
chain. Replace faulty parts.
CAUSE C
Faulty 3D sensor
SOLUTION C
Replace the 3D sensor and redo all 3D calibrations.