Roche cobas b 221 system

Roche Diagnostics May 2009
Service Manual · Version 9.0 D-129
cobas b 221 system 7 Troubleshooting
Important test routines
Remedy: o Check cable plug from mainboard to sample distributor.
o Replace sample distributor.
Error message: Peltier fan SD 37°C at BG input nOk –
Peltier fan SD 37°C at ISE input nOk –
Peltier fan SD 37°C at MSS input nOk –
Peltier fan SD 37°C above MSS input nOk –
Remedy: o Check SD fan for mechanical blockage.
o Check cable plug from mainboard to sample distributor.
o Replace sample distributor.
Valves on valve bus
Valve + No.
Error message: Valve + No. - nOk –
Remedy: o Check plug and cable of relevant valve.
o Replace valve.
o Replace valve board.
Turn & Dock
Stepper motor turn
Error message: T&D stepper motor turn nOk –
Remedy: o Check plug and cable of stepper motor.
o Replace stepper motor.
Stepper motor fillport
Error message: T&D stepper motor fillport nOk –
Remedy: o Check plug and cable of stepper motor.
o Replace stepper motor.
Stepper motor dock
Error message: T&D stepper motor dock nOk –
Remedy: o Check plug and cable of stepper motor.
o Replace stepper motor.
FMS
V19
Error message: Valve 19 nOk –