Thermo Scientific SAM12, Manual

Page: 167 / 176

Issue: 1.0 Maintenance and Trouble Shooting
Thermo Fisher Scientific SAM12 User Manual 11-19
2. Check the continuity of the cable connecting the Start
switch to PL20 on the Controller board. Replace if
necessary.
3. Restart the instrument. If the fault persists replace the
Controller board as described in
Controller Board type
5670A - Removal and Replacement (page 11-6) .
If the SAM12 becomes stuck in a monitoring cycle with the
display showing “Count Time Remaining xx seconds” it is
likely that microprocessor has crashed. Power down and check
again. Continual crashing may indicate that the Controller
board needs replacing as described in
Controller Board type
5670A - Removal and Replacement (page 11-6) possible that
the hard disk may have suffered some damage in this area of
the program. If the problem persists even after changing the
Controller board a new disk should be considered.
If USB data output from the SAM12 to a serial printer, or
external computer, contains spurious characters, or is corrupted
in any way, check the following possible causes:
1. If no output whatsoever is received, check the data
cable connections (see
Displays (page 3-4) ).
2. If a USB printer is involved, perform a printer self-test,
to determine whether the printer itself is at fault.
Locked in Measurement
Mode
USB Output Data is
Corrupted