Roche Diagnostics May 2009
Service Manual · Version 9.0 D-41
cobas b 221 system 7 Troubleshooting
Module stops
o Check cable press fit of the BG connector cable on the mainboard for damage.
e
For details, see Figure Mainboard connectors on page B-90.
o Replace the mainboard unit.
e
For instructions, see Replacing the Mainboard unit on page B-89.
Error 20035 "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 the BG sensor contact (SCon).
O Replace BG measuring chamber.
e
For instructions, see Replacing the BG measuring chamber on page B-40.
O Replace the mainboard unit.
e
For instructions, see Replacing the Mainboard unit on page B-89.
o Check cable press fit of the BG connector cable on the mainboard for damage.
e
For details, see Figure Mainboard connectors on page B-90.
o Call up general hardware test to check function of fan unit and if necessary replace
h [System] > [Diagnostics] > [General hardware test].
e
For instructions, see Replacing the main fan unit on page B-110.
Error 20037 "ADC error BG"
Signal acquisition could not be performed due to a hardware error.
o Turn the instrument off, wait at least 3 minutes, and turn it back on.
o Check cable press fit of the BG connector cable on the mainboard for damage.
o Replace the BG measuring chamber.
e
For instructions, see Replacing the BG measuring chamber on page B-40.
o Replace the mainboard unit.
e
For instructions, see Replacing the Mainboard unit on page B-89.
Error 20038 "HW test error BG"
A hardware error occurred during testing the BG measuring chamber.
o Call up General hardware test and replace damaged parts.
h [System] > [Diagnostics] > [General hardware test].
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