Roche cobas b 221 system User Manual

Roche Diagnostics May 2009
Service Manual · Version 9.0 D-133
cobas b 221 system 7 Troubleshooting
Important test routines
The condition of each parameter is represented over a value flag which is listed in the
column below the parameter name. The following informations are possible:
A calibration is represented by one or more lines in the service report.
Successfully during an aspiration cycle calibrated parameters get indicated with
condition "0" or "1".
If further cycles are necessary, the reason for repetition can be read from the value
flag. For details, see
Troubleshooting on page D-3.
Standby BG
The standby section shows the sensor status during the standby phase and begins with
the heading "Standby BG" as well as date and time at the beginning of the standby
phase. This standby phase is not the standby mode of the instrument but the time in
"Ready" mode while that is not being measured and not being calibrated. Every
10 minutes a new entry is print out.
e For details, see Sensor limits (Sensor report) on page D-135.
Status
If a drift alarm arises during the standby phase, the heading "Status" as well as date
and time with the value flags for the measurement chamber concerned are print out.
e For details, see Troubleshooting on page D-3.
The status is followed by the entry "Mix1".
Cycle Description Measurement chamber
LFB
conductivity CAL B BG, ISE
LFC
conductivity CAL A BG, ISE
1P
Mix1 BG, ISE
2P
Mix2 BG, ISE
AIR
O
2
air calibration BG
NULL
O
2
zero point calibration BG
D
calibration with MSS standby solution MSS
C1
CAL 1 calibration MSS
C2
CAL 2 calibration MSS
C3
CAL 3 calibration MSS
C4
CAL 4 calibration MSS
Ta bl e D -27 Considered aspiration cycles for service report
Condition Description
–
parameter not relevant at this aspiration cycle
0
calibration OK
1
calibration OK (measurement value with extended specifications)
[number]
number of the value flag, which indicated the status after the aspiration
cycle
e For details, see Troubleshooting on page D-3.
Ta bl e D -2 8 Considered aspiration cycles for service report

Roche cobas b 221 system Specifications

General

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