Roche cobas b 221 system

Roche Diagnostics May 2009
Service Manual · Version 9.0 D-51
cobas b 221 system 7 Troubleshooting
System warnings
Error 20142 "AQC temperature nOk"
The temperature of the AQC module is outside the specified range.
o Turn the instrument off, wait at least 3 minutes, and turn it back on.
o Call up component test and check the AQC temperature.
h [System] > [Component test] > [Control sensors] > [Temperature control] >
[Temperature AQC].
AQC temperature not ok –
O Replace temperature sensor.
e For instructions, see Replacing the AQC temperature sensor on page B-134.
o Replace the AQC board.
e For instructions, see Replacing the AQC board on page B-124.
System warnings
Warning 30005 "Cl electrode is contaminated (defective)"
The Cl electrode is contaminated or defective.
o Call up "Start internal cleaning" for the ISE measuring chamber.
o Call up "Start external cleaning" for the ISE measuring chamber.
o Shorten the ISE cleaning interval.
h [Setup] > [Times & intervals] > [Maintenance timing] > [ISE cleaning].
o Clean the electrode using the "Cleaning Kit for Cl
–
Electrode".
e For instructions, refer to the "Cleaning Kit for Cl– Electrode" package insert.
o Replace Cl
–
electrode.
This troubleshooting has also to be performed before deactivating this parameter and
replacing it with a dummy electrode.
Warning 30008 "Pack S2 level is low"
S2 Fluid Pack will be empty in the next 12 to 24 hours.
o If necessary, insert a new S2 Fluid Pack.
e For instructions, refer to the cobas b 221 system Instructions for Use, Chapter
"Maintenance", section "Exchange of solutions and packs".
Warning 30009 "Pack S3 level is low"
S3 Fluid Pack A will be empty in the next 12 to 24 hours.
o If necessary, insert a new S3 Fluid Pack A.
e For instructions, refer to the cobas b 221 system Instructions for Use, Chapter
"Maintenance", section "Exchange of solutions and packs".