Roche cobas b 221 system

Roche Diagnostics May 2009
Service Manual · Version 9.0 D-75
cobas b 221 system 7 Troubleshooting
Value flag s
o Check Baro settings.
e For instructions, see Baro sensor on page D-101, Baro settings on page B-5.
o Insert electrode simulator and act accordingly.
Flag no. 2029 "ADC >>>>>"
Sensor signal is above the measuring range.
Possible causes: o Reference system not filled
o Leaky/empty electrode
Remedy: o Call up "Fill reference electrode" for the relevant module.
h [System] > [Utilities] > [Fluid actions] > [Fill routines].
o Perform "Calibration for ready".
o Check electrode seating.
o Replace relevant electrode/cartridge.
o Insert electrode simulator and act accordingly.
Flag no. 2030 "ADC <<<<<"
Sensor signal is below the measuring range.
Possible causes: o Reference system not filled
o Leaky/empty electrode
Remedy: o Call up "Fill reference electrode" for the relevant module.
h [System] > [Utilities] > [Fluid actions] > [Fill routines].
o Perform "Calibration for ready".
o Check electrode seating.
o Replace relevant electrode/cartridge.
o Insert electrode simulator and act accordingly.
Flag no. 2031 "Conditioning not ok"
The Na electrode was not conditioned.
Possible causes: o S2 docking mechanism leaky
o T&D leaky when aspirating conditioner
Remedy: o Call up "Aspirate Na cond solution".
h [System] > [Utilities] > [Fluid actions] > [Fill routines].
o Call up "Conditioning".
h [System] > [Utilities] > [Fluid actions] > [Conditioning].
o Replace S2 Fluid Pack.
o Check S2 docking mechanism for contamination and if necessary clean it.