Bio-Rad Image Lab™ Software - Manual (Page 177)

User Guide | 177
B Troubleshooting
Follow these suggestions to troubleshoot your GS-900 densitometer.
Problem Possible Cause Solution
Instrument does not
scan and makes a
loud clicking noise
during attempted scan
or during startup
initialization. Upper or lower carriage
locking mechanisms are still
locked. Unlock carriage locking mechanisms.
Instrument fails to
perform a scan and
Image Lab reports
that debris is on the
imaging area. Water or foreign matter is on
the calibration area of the
instrument. Clean the calibration area and ensure
that water drops are wiped up when
transferring gels to the sample area
Streaks or other dark
or light regions appear
in the image (most
apparent when the
entire sample area is
scanned and the
resulting image is
transformed to
emphasize faint
signal.) Contamination or foreign
object is on calibration or
sample area. Flat field
calibration may need to be
reset. Reset Flat Field calibration using the
Instrument Setup window, found in
the Edit menu.
Note: Coomassie stain may build up
during normal use. It is
recommended that the calibration
and sample area be thoroughly
cleaned with 70% ethanol on a
regular basis.