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23366b GB/2019-07
1
electronic GmbH & Co. KG • Heinrichstraße 3-4 • 12207 Berlin • Deutschland • [email protected]
6.2
Error analysis
The ultrasonic generator is robustly constructed and designed for a high level of
reliability.
Nevertheless, the possibility of a malfunction due to a defective component can
never be fully discounted. If operating faults do occur, please observe the following
information.
Caution !
Repairs must only be performed by authorised, quali
fi
ed personnel!
Unauthorised interventions will void the warranty!
All generator functions are controlled by the program.
To initiate an error search, the HF switch and power switch/button should be turned off.
After approximately 6 seconds, the power switch/button should be turned on again.
• All the LEDs on all power modules must be monitored. All the LEDs on all power
modules should light up for approx. 4 seconds immediately after the switching on.
• If this is not the case for one or more modules, the internal communication of all
modules when operating with the PRO 3 module or SPS could be disturbed.
In order to ensure proper functioning of the remaining generator modules, the
defective modules should be removed from the generator.
Only during the testing - Slots must not permanently empty - No continuous
operation allowed!
The cause is most often a malfunction of a melting fuse or a power transistor on the
affected power module.
1. Dismount the affected M 1003 or M 1503 module
2. Inspect the fuses
3. Inspect the transistors:
to do so, place down the module with the PC-board facing upwards in such a
manner that the front plate is visible (the transistor labels T_A to T_D will be
readable).
Using a diode tester, measure all power transistors successively between the
middle and right connection.
In one direction, the measured voltage should fall between 300 mV and 450 mV.
In the other direction it will be much higher.
If the voltage measures close to zero, the power transistor is defective.
In addition, check that all fans are working properly.
If these controls are performed without a problem, the operating faults can be checked
using the table on the following page.
Preparation:
-
Turn on the HF switch (Start/Stop) on the control module.
-
Turn on ACTIVE on all modules. (LED should light up green.)
If the LED is not lit up, the affected module must be removed from the generator.
