Roche cobas b 221 system

Roche Diagnostics May 2009
D-40 Service Manual · Version 9.0
7 Troubleshooting cobas b 221 system
Module stops
Error 20021 "ADC error cond BG/ISE"
A hardware error occurred during mixture calibration
o Turn the instrument off, wait at least 3 minutes, and turn it back on.
o Replace the mainboard unit.
e For instructions, see Replacing the Mainboard unit on page B-89.
Error 20022 "Transponder error S2"
The transponder data of S2 Fluid Pack could not be read.
o Remove and replace S2 Fluid Pack.
o Check plug connectors of the transponder antenna cable.
o Replace transponder control S2.
e For instructions, see Replacing the Transponder Control (waste, S1, S2, S3) on
page B-72.
o If multiple "Transponder Errors" (Error 20022 "Transponder error S2" on
page D-40, Error 20094 "Transponder error S3" on page D-47) occur
simultaneously, replace mainboard unit.
e For instructions, see Replacing the Mainboard unit on page B-89.
Error 20023 "S2 on board time expired"
On-board time of S2 Fluid Pack expired.
o Insert new S2 Fluid Pack.
Error 20024 "HW test error FMS"
A hardware error occurred during testing the FMS.
o Call up General hardware test and replace damaged parts.
h [System] > [Diagnostics] > [General hardware test].
Errors 20032...20034 "BG temperature nOk"
The temperature of the BG measuring chamber falls 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 BG temperatures.
h [System] > [Component test] > [Control sensors] > [Temperature control] >
[Temperatures BG].
BG temperatures not ok –
O Replace BG measuring chamber.
e For instructions, see Replacing the BG measuring chamber on page B-40.