Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
Service Manual · Version 9.0 B-61
cobas b 221 system 4 Components
COOX module (cobas b 221<2/4/6> systems only)
Use the reverse order for assembly.
Replacing the Hemolyzer tube
1 Remove the cobas b 221 system top cover.
2 Disconnect the tube on the hemolyzer (out) and at the cuvette input and remove
it.
Use the reverse order for assembly.
Replacing the HSIN board
1 Remove the top cover, the printer cover and the T&D cover of the cobas b 221
system.
2 Rotate the T&D lock on the T&D module 90 degrees to the right.
e For details, see Figure B-4 on page B-22.
3 Carefully pull the sample inlet path out to the right and remove it.
4 Unscrew the three screws holding the central measuring unit.
e For details, see Figure B-2 on page B-20.
5 Raise the central measuring unit forward until it clicks audibly into place.
6 Disconnect the wide plug and the hemolyzer plug from the HSIN board.
7 Disconnect the flat cable from the HSIN board.
When installing the hemolyzer head tighten the two screws alternately to prevent distortion!
Do not reverse the two tubes on the hemolyzer when reconnecting them!
Electrostatically sensitive components!
Do not remove the fastening screws completely, because they are secured against loss.
The sample inlet path must be removed at this time, otherwise it will be destroyed by folding the
central measuring unit out.

Roche cobas b 221 system Specifications

General

Brand	Roche
Model	cobas b 221 system
Category	Medical Equipment
Language	English