Roche cobas b 221 system

Roche Diagnostics May 2009
Service Manual · Version 9.0 D-65
cobas b 221 system 7 Troubleshooting
Value flag s
Flag no. 1020 "Sample distr. error (1)"
No solution was detected at SS1 during positioning.
Possible causes: o Blockage or leakage during positioning
Remedy: o Call up "Wash".
o Check that bypass nipple is correctly seated.
e For the details, see Replacing the bypass nipple on page B-24.
o Call up "General fluidics test" and check that tubing paths are open and without
leaks. h [System] > [Diagnostics] > [General fluidics test].
o Perform sample sensor test (SS1). Press [Measure] and [Calibrate].
h [System] > [Component test] > [Control sensors] > [Sample sensors].
e For instructions, refer to the cobas b 221 system Reference Manual, section
"Component test".
o Replace the SD cartridge.
e For instructions, see Replacing the sample distributor cartridge on page B-35.
o Replace sample sensor board
e For instructions, see Replacing the sample sensor board on page B-91.
Flag no. 1021 "Sample distr. error (2)"
No solution detected at SS3 although SS2 detected a solution.
Possible causes: o Blockage or leakage
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 Perform sample sensor test (SS3). Press [Measure] and [Calibrate].
h [System] > [Component test] > [Control sensors] > [Sample sensors].
e For instructions, refer to the cobas b 221 system Reference Manual, section
"Component test".
o Replace the Hb cartridge.
e For instructions, see Replacing the Hb cartridge on page B-63.
o Replace cuvette.
e For instructions, see Replacing the cuvette on page B-59.
Flag no. 1022 "Sample distr. error (3)"
Sample excess could not be extracted via sample distributor.
Possible causes: o Blockage
Remedy: o Call up "Wash".
o Check that bypass nipple is correctly seated.
e For the details, see Replacing the bypass nipple on page B-24.