Roche cobas b 221 system

Roche Diagnostics May 2009
Service Manual · Version 9.0 B-131
cobas b 221 system 5 AutoQC module
Replacing the X motor
7 Disconnect the AQC sample tube (long) from the angle unit and remove it.
Use the reverse order for assembly.
Replacing the X motor
1 Switch off the cobas b 221 system.
2 Disassemble the AutoQC module.
e For instructions, see Replacing the AutoQC module on page B-120.
3 Unscrew the two screws holding the AutoQC control board cover and remove it.
e For details, see Figure B-95 on page B-124.
4 Disconnect the X motor cable on the control board.
e For details, see Figure B-96 on page B-125.
5 Unscrew the two screws holding the X motor retainer (see below) and remove the
retainer.
6 Unscrew the two X motor fixing screws and remove the motor.
7 Remove the gear wheel from the motor and attach it to the new motor.
Use the reverse order for the further assembly.
Activate the function program h [System] > [Component test] > [Aggregates] > [AQC motors]
> [AQC motors] > [Service Position] to bring the motors to the service position.
A Fixing screws of the X motor retainer
Figure B-100 X motor retainer
A