Roche cobas b 221 system

Roche Diagnostics May 2009
D-60 Service Manual · Version 9.0
7 Troubleshooting cobas b 221 system
Value flag s
Remedy: o Call up "Fill reference electrode" for the relevant module.
h [System] > [Utilities] > [Fluid actions] > [Fill routines].
o Replace S2/S3 fluid pack.
o Check plug connector of the reference tube.
o Call up "General fluidics test" and check that tubing paths are open and without
leaks. h [System] > [Diagnostics] > [General fluidics test].
o Replace reference electrode.
Flag no. 1005 "End of sample detected"
SS1 detects the end of the sample, but the measuring chamber is not yet filled.
Possible causes: o Irregular sample
o Insufficient sample
o Improper sample
Remedy: o Repeat measurement/calibration, ensure sufficient and homogenous sample
input.
o Call up "General fluidics test" and check that tubing paths are open and without
leaks. h [System] > [Diagnostics] > [General fluidics test].
o Te s t /re pl a c e V 4.
e For instructions, see Replacing the air valve V4 on page B-88.
o Check/replace air tube at V4.
Flag no. 1006 "Irregular sample (1)"
The measuring chamber is not homogeneously filled.
Possible causes: o Irregular sample
o Leakage in measuring channel
Remedy: o Repeat measurement/calibration, ensure sufficient and homogenous sample
input.
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. 1007 "Cuvette not empty"
Sample detection in the cuvette was not possible.
Possible causes: o Deposits in the cuvette