Troubleshooting; Fault Diagnosis And Corrective Actions; Data Acquisition - Shimadzu IonFocus Instruction Manual

4

Troubleshooting

4.1

Fault Diagnosis and Corrective Actions

Regarding problems related to the ionization unit, this chapter describes the causes of
the problems and the corrective actions to take when they occur. For more details on
the actions to take, see the reference pages cited in the tables below.
For information on problems with the LCMS main unit, refer to "Troubleshooting" of
"LCMS Instruction Manual".
If the problem is not resolved after taking the corrective action described here, or if the
fault is considered to be one not described here, contact your Shimadzu representative.

4.1.1 Data Acquisition

Problem
The ion intensity is
unstable or low.
Cause
Ionization unit
The capillary ASSY is blocked.
The tip of the capillary ASSY
is projecting too far beyond
the ESI probe, or is too
recessed.
The ESI probe is substantially
out of place.
The probe has not been
heated properly.
The interface temperature is
high.
The interface current and
focus current are large.
The high voltage is not being
supplied properly.
Corrective Action / See
"5.2.1 Replacing the Tubing"
P.39
"5.2.1 Replacing the Tubing"
P.39
"3.1.5 Mounting the Ionization Unit
" P.17
Check the analysis method
parameters and the tuning file.
Contact your Shimadzu
representative if the situation does
not improve.
Decrease the interface temperature.
Depending on the flow rate and
composition of the mobile phase, a
high interface temperature may
evaporate the mobile phase,
making the sensitivity unstable.
Decrease the interface voltage and
focus voltage.
The interface current and focus
current may become unstable as
the result of discharge.
Check the analysis method
parameters and the tuning file.
If there is no problem, a wire may
be broken.
Contact your Shimadzu
representative.
IonFocus
4
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Unit