Roche cobas b 221 system

Roche Diagnostics May 2009
D-84 Service Manual · Version 9.0
7 Troubleshooting cobas b 221 system
Value flag s
o Call up "Polychromator calibration".
o Replace cuvette.
e For instructions, see Replacing the cuvette on page B-59.
o Check/replace cuvette holder.
e For instructions, see Replacing the cuvette holder on page B-58.
o Check primary light guide for damage and if necessary replace it.
e For instructions, see Replacing the primary light guide on page B-56.
o Replace lamp unit bilirubin.
e For instructions, see Replacing the lamp unit bilirubin on page B-51.
o Replace polychromator bilirubin.
e For instructions, see Replacing the Polychromator Bilirubin on page B-54.
Flag no. 7034 "Solution exhausted"
The pH value of the O
2
zero point solution is < 5.
Possible causes: o Solution used up
o Contamination of S2 Fluid pack
Remedy: o Replace S2 Fluid Pack.
Flag no. 8036 "IfS not OK"
The ratio of BSA/Glu or BSA/Lac for CAL 3 is out of range.
Possible causes: o Interference correction not possible
Remedy: o Perform "Calibration for Ready".
o Replace MSS cassette.
o Replace S3 Fluid Pack A.
o Check tubing for solutions CAL 1 and CAL 3.
e For more information, see Chapter 2 Fluid actions.
Flag no. 8061 "Interferences (1)"
The calculated tHb value is invalid.
Possible causes: o Interferences
o Unsuitable sample type used
Remedy: o Check the sample material and, if necessary, reenter the sample.
o Perform "Polychromator calibration".
o Replace cuvette.
e For instructions, see Replacing the cuvette on page B-59.