Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
B-58 Service Manual · Version 9.0
4 Components cobas b 221 system
COOX module (cobas b 221<2/4/6> systems only)
Replacing the cuvette holder
1 Remove the top cover, the printer cover and the T&D cover of the instrument.
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 Remove the two light guides from the clamp.
e For details, see Figure B-36 on page B-54.
7 Disconnect the two tubes from the cuvette holder and open the cuvette holder.
8 Unscrew the two screws holding the cuvette holder and pull the cuvette holder out
to the front.
e For details, see Figure B-41 on page B-58.
9 Disconnect the two light guides and the flat cable from the cuvette holder and
slide it out to the back.
10 Disconnect the cuvette holder ground cable from the frame.
11 Remove the cuvette holder.
Use the reverse order for assembly.
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.
A Prism
B Two screws
C Two tubes
D Cuvette holder
E Cuvette
F Cuvette retainer
Figure B-41 Cuvette holder
D
A
FE
C
BB
C

Roche cobas b 221 system Specifications

General

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