Roche cobas b 221 system

Roche Diagnostics May 2009
Service Manual · Version 9.0 D-59
cobas b 221 system 7 Troubleshooting
Value flag s
o Difficult aspiration of CAL B due to FMS problems
Remedy: o Call up "General fluidics test" and check that tubing paths are open and without
leaks. h [System] > [Diagnostics] > [General fluidics test].
o Replace S2 Fluid Pack.
o Check/replace S2 docking mechanism.
e For instructions, see Replacing the docking mechanisms S2 and S3 (fluid packs) on
page B-70.
o Replace the FMS unit.
e For instructions, see Replacing the FMS on page B-33.
o Replace the FMS control board.
e For instructions, see Replacing the FMS control board on page B-35.
Flag no. 1002 "Sample sep. error (1)"
No air packet was detected between calibration solution and sample.
Possible causes: o Deposits or blockage in the measuring chamber
Remedy: 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. 1003 "Ref. sol. asp. error"
No reference solution was detected.
Possible causes: o Blockage or leaks in the reference system
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. 1004 "Ref. sol. pos. error"
The conductivity level could not be maintained.
Possible causes: o Separation of electrode membrane
o Leaky electrodes