Kendro HERAcell 150, Operating Instructions Manual

Page: 129 / 251

Name/Name Datum/Date Benennung/Designation
Erstellt/Prepared
D.Dornseiff 01/15/98
Index Änderung Name/Name Datum/Date
Service Handbuch HERAcell 150
Service Manual HERAcell 150
C 202613 D.Dornseiff 06/26/03
Dokumentnr./Document No. Seite/Page
Datei/File
50051109_04_EN_C.doc 50051109 / C 23/ 9
Weitergabe sowie Vervielfältigung dieser Unterlage, Verwertung oder Mitteilung ihres Inhalts nicht gestattet, soweit nicht ausdrücklich zugestanden. Zuwiderhandlungen ver-
pflichten zu Schadensersatz. Alle Rechte für den Fall der Patenterteilung oder Gebrauchsmustereintragung vorbehalten. © Kendro Laboratory Products GmbH, Germany
4.7 ERROR EXAMINATION AND REGULATING CIRCUIT SCHEMATICS
4.7.1 GENERAL ERRORS:
General errors are those that cannot be assigned to a specific regulating circuit.
Error
code
Test equip-
ment / Test at
the unit Inspections and tests Possible corrective actions
Multimeter Check the power supply
to the O2 board and
flask rotating equipment. 
Replace the mains power
supply unit.

Bus cable and
display PCB
both in working
order. Switch the unit off.
Disconnect the bus ca-
ble to the display PCB at
the main board.
Attach the test set (ca-
ble/display PCB).
Switch the unit on.
Perform the functional
test.
Test set operational:

Repeat the functional test of
the individual installed com-
ponents. Replace the cable
or display PCB.
Test set not operational:

Replace the main board.
44 Switch unit off then on.
Check if error reoccurs. Replace the measuring cell.
42 Replace the main board.
43 Switch the unit off, then
on. Check if the error re-
occurs. Replace the main board.
54 Check the error list. If the error reoccurs, inform
the factory (Q).