Roche cobas b 221 system

Roche Diagnostics May 2009
D-58 Service Manual · Version 9.0
7 Troubleshooting cobas b 221 system
Value flag s
Warning 30037 "Screen sharing active"
A service connection was established to the instrument. An indicator will be displayed
in the status line.
o This warning will be removed after screen sharing was finished.
e For more information, see Figure D-2 on page D-12 and
refer to the cobas bge link documentation.
Value flags
# ... check Hct result
The Hct measurement result is not plausible.
Possible causes: Since Hct is measured based on a conductivity measurement, the total ionic strength
(total concentration of ions) can influence the Hct result. Deviating ISE
concentrations could cause a deviation from the typical total ionic strength.
Remedy: Check sample material.
Flag no. 1000 "Sample pos. error (1)"
No constant conductivity over the distance MCI-MCO when positioning in the
measuring chamber.
Possible causes: o Blockage or leakage
o Leaky electrodes
o Solution is fragmented
o Solution is unhomogenous
o Separation of electrode membrane
Remedy: o If discoloration can be detected by sample material in the internal electrolyte of
the electrode, it must be replaced.
o Call up "General fluidics test" and check that tubing paths are open and without
leaks. h [System] > [Diagnostics] > [General fluidics test].
o Call up "Contact path test" and aspirate CAL B.
e For the details, see Contact path test on page D-95.
o Insert electrode simulator in the relevant module and act accordingly.
Flag no. 1001 "Sample pos. error (2)"
Conductivity over the distance MCI-MCO too low when positioning in the
measuring chamber.
Possible causes: o Blockage or leaks