Roche cobas b 221 system

Roche Diagnostics May 2009
Service Manual · Version 9.0 D-77
cobas b 221 system 7 Troubleshooting
Value flag s
Possible causes: o Sample feeding clogged
Remedy: o Call up "Wash".
o Call up "General fluidics test" and check that tubing paths are open and without
leaks. h [System] > [Diagnostics] > [General fluidics test].
o Replace cuvette.
e For the details, see Replacing the cuvette on page B-59.
o Call up "Polychromator calibration".
o Call up "COOX calibration".
Flag no. 2042 "Wavelength not OK"
Polychromator wavelength not ok.
Possible causes: A specific wavelength is outside the expected range.
Remedy: o Call up "Polychromator calibration".
o Replace polychromator.
e For instructions, see Replacing the Polychromator Bilirubin on page B-54.
o Replace lamp unit bilirubin.
e For instructions, see Replacing the lamp unit bilirubin on page B-51.
Flag no. 2043 "Hemolysis not OK (1)"
Hemolysis was not ok.
Possible causes: The hemolyzer is not ready for operation.
Remedy: o Visually inspect that hemolyzer tubing is dry.
o Perform vacuum system test.
e For the details, see Vacuum System on page D-101.
o Call up hemolyzer test and depending on the result replace hemolyzer unit or
HSIN board.
e For instructions, see Replacing the hemolyzer on page B-60.
Flag no. 2044 "Hemolysis not OK (2)"
Hemolysis was not ok.
Possible causes: The hemolyzer power is outside the expected range.
Remedy: o Visually inspect that hemolyzer tubing is dry.
o Perform vacuum system test.
e For the details, see Vacuum System on page D-101.
o Call up hemolyzer test and depending on the result replace hemolyzer unit or
HSIN board.
e For instructions, see Replacing the hemolyzer on page B-60.