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Troubleshooting
(continued)
Fault
During calibration the LED on the
readhead is double flashing Blue even
after moving it past the reference mark
several times
No reference mark output
Reference mark is not repeatable
LED on the readhead is flashing Red
over the reference mark
ATOM DX
rotary installation guide
Cause
Possible solutions
The readhead is not seeing a
Check the disc/readhead orientation
u
reference mark
Check the disc/readhead alignment
u
Check the readhead optical window and disc are clean and free from contamination
u
Check that the readhead variant is the correct type for the chosen disc
u
(see the ATOM DX data sheet (L-9517- 9736) for details of readhead configuration)
Ensure you are not over-speeding the readhead during calibration mode (maximum speed <100 mm/sec)
u
Calibrate the system
u
The reference mark is not
The readhead bracket must be stable and not allow any mechanical movement of the readhead
u
calibrated
Clean the disc and readhead optical window and check for damage then recalibrate the system
u
The reference mark is not phased
Clean the disc and readhead optical window and check for scratches then recalibrate the system
u
(see page 12)
– If the system completes calibration mode then it has successfully seen and calibrated the reference mark
If you still don't see a reference mark then check the system wiring
– If the system does not calibrate the reference mark (readhead set-up LED remains double flashing Blue)
see above for possible solutions
(see page
12).
(see page
12).
14
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