Roche Diagnostics May 2009
D-62 Service Manual · Version 9.0
7 Troubleshooting cobas b 221 system
Value flag s
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. 1010 "Sample pos. error (4)"
The conductivity was too high.
Possible causes: o Standby solution aspiration problems
o MSS output pump tube is defective
Remedy: o Replace MSS output pump tube.
e
For the details, see Replacing the pump tube on page B-67.
o Call up fill routines "Aspirate standby solution" and "Fill ref. electrode MSS"
(reference electrode only for instruments with urea installed).
h [System] > [Utilities] > [Fluid actions] > [Fill routines].
o Call up "Contact path test" and aspirate standby solution.
e
For the details, see Contact path test on page D-95.
o Replace S3 Fluid Pack A.
Flag no. 1011 "Sample pos. error (5)"
No constant conductivity was detected at the sensor input.
Possible causes: o Blockage or leakage
o MSS output pump tube is defective
Remedy: o Replace MSS output pump tube.
e
For the details, see Replacing the pump tube on page B-67.
o Call up fill routines "Aspirate standby solution" and "Fill ref. electrode MSS"
(reference electrode only for instruments with urea installed).
h [System] > [Utilities] > [Fluid actions] > [Fill routines].
o Perform "Calibration for Ready".
h [System] > [Calibrations] > [Calibration for Ready].
o Perform "MSS polarization".
o Perform a wetting routine for MSS.
h [System] > [Utilities] > [Fluid actions] > [Wetting routines].
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" for MSS and aspirate standby solution.
e
For the details, see Contact path test on page D-95.
o Insert electrode simulator in the relevant module and act accordingly.
o Replace MSS cassette.
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