Troubleshooting
10-1
IM CA150E
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App
10. Troubleshooting
10.1 Troubleshooting Checklist
If the instrument will still not operate normally after checking the following
items or if you notice a problem not listed, contact the dealer from whom
you purchased the instrument.
Problem
Nothing appears on the LCD even
when the power is turned on.
Measurement values are not
displayed. (Source values and other
indications are displayed normally.)
Source remains off even if
SOURCE ON (output) is operated.
Source cannot be turned on with
SOURCE ON (output) or nothing is
generated even if source is turned
on.
Source and measurement values
are abnormal.
The instrument cannot be controlled
by communication via the RS232
interface.
The hold function for measurement
does not work.
Err 79 or Err 80 appears at power
on.
Corrective Action
When Running On Batteries
• Are the batteries attached properly?
• Have the batteries run out of power?
• Is the plug of the AC adapter inserted in the instrument but
the AC adapter is not connected to an AC power supply (outlet)?
When Using an AC Adapter
• Is the AC adapter being reliably supplied with power?
Is MEASURE ON/OFF indicated as being in the OFF state?
• When the instrument is in voltage (DCV) generation, is the load
current exceeding the specified value?
• When the instrument is in current (DCA) generation, is the load
resistance too large?
• If an abnormal voltage (current) is applied to the output terminals,
the built-in protection fuse may blow. If it does, the instrument
needs to be repaired.
(This fuse is different from the one described in "3.2.4 Fuse.")
• Are they affected by noise?
• When the instrument is in resistance (V, RTD) generation,
is the capacitor in the input of the device under test large
(0.01 µF or larger)?
• Are the communication settings configured properly?
• Is "Print" set for communication in setting mode?
(The communication output state is indicated by
the flashing of REMOTE.)
• The instrument needs to be repaired.