Hitachi TM3030 Plus Instruction Manual page 273

Code Error Message
1211 The electron gun is wrong.
Start up the main unit and
application again.
Contact service if the failure
occurs repeatedly.
1212 Beam current is too high.
Please check the filament
setting.
1213 Beam current is too low.
Please check the filament
setting.
Countermeasure
An emission current of 7 µA or more has been
detected at a filament current of 0.0 A.
Click the [OK] button to close the message.
Restart the system by the following procedure.
1. Turn off the PC power.
2. Turn off the main unit power.
3. Restart the PC.
4. Turn on the main unit power and start the
application.
If the same message appears repeatedly after
restart of the system, contact the nearest service
representative.
An emission current of 200 µA or more
(overcurrent) has been detected during a
gradual-increase process of a high voltage. Click
the [OK] button to close the message. Make
sure there are no particles on the filament tip
and the opening of the Wehnelt. Also confirm
that the specified spacer ring is properly
mounted.
For the details, refer to 5.1 Filament
Replacement.
An emission current higher than 10 µA or lower
than 20µA has been detected during a
gradual-increase process of a high voltage. Click
the [OK] button to close the message. The
filament may have burned out. Replace the
filament with a new one.
For the details, refer to 5.1 Filament
Replacement.
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