7 Troubleshooting
Value flags
Flag no. 1010 "Sample pos. error (4)"
Possible causes:
Remedy:
Flag no. 1011 "Sample pos. error (5)"
Possible causes:
Remedy:
Roche Diagnostics
D-62
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.
The conductivity was too high.
o
Standby solution aspiration problems
o
MSS output pump tube is defective
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.
No constant conductivity was detected at the sensor input.
o
Blockage or leakage
o
MSS output pump tube is defective
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.
cobas b 221 system
May 2009
Service Manual · Version 9.0
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