Metrohm 730 Sample Changer - Manuel (Page 170)

5.4 Diagnosis
730 Sample Changer, Appendix
167
5.4 Diagnosis
5.4.1 General Information
The 730 Sample Changer is a very precise and reliable control in-
strument. Thanks to its rugged construction, its functions are
rarely influenced by mechanical or electrical affects.
Although an occasional fault in the instrument can not be excluded
completely, it is certainly much more likely that malfunctions are
caused by wrong operation or handling or by improper connec-
tions and operation with non-Metrohm instruments.
In any case it is advisable to localize the error with the quick and
easy-to-use diagnostic functions. Metrohm Service only needs to
be contacted if an actual error is apparent in the instrument. Addi-
tionally, the service technician can be much more precisely in-
formed with the aid of the results of the specific built-in diagnostic
functions.
In inquiries always quote the manufacturing (instrument rear side,
see page 5) and program number (see configuration, page 82)
and specify possible error displays.
Procedure
The following test list shows all components for which there are
detailed instructions (diagnostic steps) to check their functionality.
If there is a possible malfunction we recommend following the in-
structions of the corresponding diagnosis step or running all the
diagnosis steps as a routine check of the instrument.
The sample changers reaction to the instructions should be com-
pared with the description in the diagnosis step. If the instrument
exhibits an unexpected reaction ("no" situation), the diagnosis step
should be re-run to rule out operating error. Several false reac-
tions however, indicate a high probability of a disorder.
Components see Chapter
Operating Memory (RAM) Chap. 5.4.3
Display Chap. 5.4.4
Keyboard Chap. 5.4.5
Remote Chap. 5.4.6
RS232 Chap. 5.4.7
External Bus Chap. 5.4.8
Beeper Chap. 5.4.9
Rack code Chap. 5.4.10