Roche cobas b 221 system

Roche Diagnostics May 2009
Service Manual · Version 9.0 B-15
cobas b 221 system 4 Components
Table of c o n t e nts
Components
This chapter provides general information about components of the cobas b 221
system.
Important notes ............................................................................................................. 19
Shutdown .......................................................................................................................19
The cobas b 221 system remains switched off for more than 24 hours ................19
Removing the rear panel ...............................................................................................20
Folding up the central measuring unit .........................................................................20
T&D system (Turn & Dock) ......................................................................................... 21
Replacing the T&D module ....................................................................................21
Replacing the fill port ..............................................................................................23
Replacing the fill port holder ..................................................................................23
Replacing the needle ................................................................................................23
Replacing the sample inlet path ..............................................................................24
Replacing the bypass nipple .................................................................................... 24
Replacing the optical sensor SS6 ............................................................................. 25
Replacing the T&D sensor cover ............................................................................26
Replacing the T&D disk ..........................................................................................26
Replacing the T&D tubing set .................................................................................27
Replacing the plug control ......................................................................................28
Replacing the T&D actuator board ........................................................................30
Replacing the stepper motor ...................................................................................30
Replacing the T&D linear actuators ....................................................................... 32
Fluid mixing system (FMS) ..........................................................................................33
Replacing the FMS ...................................................................................................33
Replacing the FMS control board ...........................................................................35
Replacing the FMS tubing set ................................................................................. 35
Sample distributor (SD) ...............................................................................................35
Replacing the sample distributor cartridge ............................................................35
In this chapter
Chapter
4