Roche cobas b 221 system

Roche Diagnostics May 2009
D-22 Service Manual · Version 9.0
7 Troubleshooting cobas b 221 system
System stops
O Replace corresponding sample sensor.
e For instructions, see Replacing the SS1, SS2, SS3 and SS4 optical sensors on
page B-39.
O Replace sample sensor board.
e For instructions, see Replacing the sample sensor board on page B-91.
Error 10051 "Error SS4"
The optical sample sensor at the input of the MSS module could not be calibrated.
o Call up "Wash" to calibrate the sample sensor.
o Check the corresponding sample sensor in the sensor test: press [Calibrate] to
perform dry calibration. Then press [Inject bypass] / [Inject sample
distributor] and inject water through the input unit. Press [Measure]. The
measured value with liquid shoud be significantly lower than dry.
o Visually inspect the corresponding sample sensor for liquid residue.
Fluid present:
O Test corresponding valves and if necessary replace them.
e For instructions, see Replacing the valves from sample distributor cartridge and Hb
cartridge on page B-83.
O Check tubing system for blockages and replace the relevant components.
No fluid present:
O Replace corresponding sample sensor.
e For instructions, see Replacing the SS1, SS2, SS3 and SS4 optical sensors on
page B-39.
O Replace sample sensor board.
e For instructions, see Replacing the sample sensor board on page B-91.
Error 10052 "Error SS6"
The optical sample sensor in the middle of the sample inlet path could not be
calibrated.
o Check installation of sample inlet path.
o Call up "Wash" to calibrate the sample sensor.
o Check the corresponding sample sensor in the sensor test: press [Calibrate] to
perform dry calibration. Then press [Inject bypass] / [Inject sample
distributor] and inject water through the input unit. Press [Measure]. The
measured value with liquid shoud be significantly lower than dry.
o Visually inspect the sample sensor for liquid residue.
Fluid present:
O Check tubing system for blockages and if necessary replace T&D tubing set.
e For instructions, see Replacing the T&D tubing set on page B-27.
No fluid present:
O Replace sample sensor.
e For instructions, see Replacing the optical sensor SS6 on page B-25.