Roche Diagnostics May 2009
Service Manual · Version 9.0 D-39
cobas b 221 system 7 Troubleshooting
Module stops
o Use fluid actions to aspirate CAL A and CAL B again.
Evaluation ok:
O Replace FMS control board.
e
For instructions, see Replacing the FMS control board on page B-35.
O Replace the fluid mixing system.
e
For instructions, see Replacing the FMS on page B-33.
If these actions cannot correct the errors, see the next item.
Evaluation not ok:
O Check tubing paths for CAL A and CAL B for blockages and replace the
relevant component.
Error 20018 "Pack S2 empty"
S2 Fluid Pack is empty.
o Install a new S2 Fluid Pack.
o If the error persists, download service log file and send instrument for repair.
e
For instructions, see Service log file export on page B-12.
Error 20019 "Flap S2"
The docking mechanism S2 is open.
o Check docking mechanism S2 again. Open and close several times.
o Replace docking mechanism S2.
e
For instructions, see Replacing the docking mechanisms S2 and S3 (fluid packs) on
page B-70.
Error 20020 "No pack S2"
S2 Fluid Pack is missing.
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 a "Transponder Error" (Error 20022 "Transponder error S2" on page D-40, Error
20094 "Transponder error S3" on page D-47) occurs simultaneously with this
error, replace mainboard unit.
e
For instructions, see Replacing the Mainboard unit on page B-89.
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