Roche cobas b 221 system

Roche Diagnostics May 2009
D-66 Service Manual · Version 9.0
7 Troubleshooting cobas b 221 system
Value flag s
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 (SS2). 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 sample sensor board.
e For instructions, see Replacing the sample sensor board on page B-91.
Flag no. 1023 "Sample distr. error (4)"
No solution was detected at SS4.
Possible causes: o Blockage or leakage
o Insufficient sample
Remedy: o Ensure that there is sufficient sample.
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 (SS4). 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.
Flag no. 1025 "No sample detected (2)"
ISE: No constant conductivity of the sample was detected.
Possible causes: o Fragmented sample in sample distributor
Remedy: o Ensure sample entry is free of air bubbles.
Flag no. 1026 "No sample detected (3)"
ISE: No constant conductivity of the sample was detected.
Possible causes: o Fragmented sample in sample distributor
Remedy: o Ensure sample entry is free of air bubbles.
Flag no. 1027 "No sample detected (4)"
No sample detected in COOX module.