Roche 91 Series - Service Functions; Test Electrodes; TEST LANGUAGE SWITCH (9180 and 9181 Only; Test Sample Sensor

Roche Diagnostics April 2007
Service manual · Version 2.0 B-65
91xx pH/Electrolyte Analyzers 10 Service functions
Service functions
Service functions
The Service Functions mode provides a menu of service test functions to assist in
failure diagnosis and identification. A logic flow chart is provided for reference of the
sequences included in the Service Functions mode.
TEST ELECTRODES
This mode allows for the measurement and display of electrode voltages.
Standard A, Standard B or an external sample can be measured to determine
electrode performance and provide measurement data useful in locating electrode
calibration faults. Each electrode parameter will be displayed and the electrode
voltage associated with the sample type selected can be observed.
Example displays
TEST SAMPLE SENSOR
In this mode, the sample sensor output is displayed which is useful for electrical
adjustment or for troubleshooting sample sensor faults. A dry sample sensor should
display a value of 100 with a range of 80 to 120. After verifying a dry sensor, aspiration
of a clear fluid (i.e., water) should increase the displayed value by at least 40 units.
Example displays
TEST SnapPak SENSOR (9180 and 9181 only)
In this test, the SnapPak Sensor detects whether the ISE SnapPak™ is in place. "I"
indicates that the ISE SnapPak™ is in place, "O" indicates that it is either not present
or not completely seated.
Example display
TEST LANGUAGE SWITCH (9180 and 9181 only)
This mode displays the language selected for display and printout. To change the
selection, set the language switch (located behind printer) to the desired language.
The display will indicate the language choice according to the switch setting. To
activate a new language, turn the analyzer off and back on with the switch set to the
desired language.
St.A: Na=1582
K=654 Cl=-904
St.B:
pH=-808
Ext: Na=1321
K=-598 Cl=-127
(9110 pH Analyzer)
DRY 80-120: 102
YES=Pump/NO=Exit
External: 153
Pump: NO=OFF
DRY 135-145: 141
YES=Pump/NO=Exit
(9110 pH Analyzer)
SnapPak: I
I=IN O=OUT