Gymna Pulson 330, Service Manual

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18. Repairing PC boards.
18.1 Which tools are necessary ?
Be sure that you’ ve read the whole service manual, and thus that
you know how all
circuits function and which points are important.
The following test equipment is required:
Ultrasound test bath.
Two beam oscilloscope
Multimeter
safety tester.
Professional soldering and desoldering equipment.
A complete set of precision engineering tools.
Make sure that all measuring equipment is calibrated.
The unit has an Eeprom ( U 10 ) which contains the calibration data
of the output
stage.
Changing the output amplifiers or any Coils in the output circuit
can not be
done without the recalibration of the output stage.
This calibration data has to be stored in the Eeprom, which can only
be done by
Gymna.
The same goes for changing the Eeprom.
Please send the US board together with the Eeprom to GYMNA.
18.2 Which procedure has to be followed?
After repairing always follow the test procedure described in
chapter.
Always perform a safety test according to IEC 601-1
See Chapter 3 technical data for limit values.
Fill out the data registration document ( page 5 ).
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